C----------------------------------------------------------------------- FLAG TIME This option allows you to flag (delete) the Pdif AND Psum for a specific time. Move the cursor to the time you wish to flag. The vertical line will follow it while the time and value of the displayed parameter (Pdif, Psum, Pdif/-1, Psum/ ANTENNA flags (shown at the bottom left of the display). Note that, if the display is so crowded that more than one time is plotted at the indicated cursor position (in the horizontal direction only), then a range of times is actually flagged. This option is available in expert mode with abbreviation Time and code letter T (or t). Use REPLOT to recompute and display altered Pdif/ -1 and Psum/ -1 values. C----------------------------------------------------------------------- FLAG TIME RANGE This option allows you to flag (delete) Pdif AND Psum from a range of times. Move the cursor to the start or end time of the range you wish to flag. The vertical line will follow while the time of the point under the cursor will be displayed in the top left corner of the TV. Hit button A to switch to setting the other end of the time range. Move the cursor to the end point of the desired time range; the second line will follow. Hit button A to switch between the begin and end times; hit button B to flag the Pdifs and Psums in the specified range and loop to set another time range; hit button C to flag the Pdifs and Psums and return to the menu; or hit button D to return to the menu with no further flagging. Psums and Pdifs for other polarizations, IFs, and antennas may also be flagged depending on the setting of the ALL vs ONE POLARIZ, ALL vs ONE IF, and ALL vs ONE ANTENNA flags (shown at the bottom left of the display). This option is available in expert mode with abbreviation Rang and code letter R (or r). Use REPLOT to recompute and display altered Pdif/ -1 and Psum/ -1 values. C----------------------------------------------------------------------- FLAG BELOW This option allows you to flag (delete) the times in which the displayed parameter (Pdif, Psum, Pdif/ -1, Psum/ -1) has value below a cutoff level. Move the cursor to the lowest level you believe in your data. The horizontal line will follow while the value of the point under the cursor will be displayed in the top left corner of the TV. Hit button A or B to flag all Pdifs and Psums for times having the displayed parameter below the chosen level and loop to do it again, hit button C to flag all Pdifs and Psums for times having the displayed parameter below the chosen level and return to the menu; or hit button D to return to the menu with no further flagging. Pdifs and Psums for other polarizations, IFs, and antennas may also be flagged depending on the setting of the ALL vs ONE POLARIZ, ALL vs ONE IF, and ALL vs ONE ANTENNA flags (shown at the bottom left of the display). Note that the flagging is done on the basis of the values of the displayed parameter of each polarization, IF, and baseline individually. This option is available in expert mode with abbreviation Belo and code letter B (or b). Use REPLOT to recompute and display altered Pdif/ -1 and Psum/ -1 values. C----------------------------------------------------------------------- FLAG ABOVE This option allows you to flag (delete) the times in which the displayed parameter (Pdif, Psum, Pdif/ -1, Psum/ -1) has value above a cutoff level. Move the cursor to the highest level you believe in your data. The horizontal line will follow while the value of the point under the cursor will be displayed in the top left corner of the TV. Hit button A or B to flag all Pdifs and Psums for times having the displayed parameter above the chosen level and loop to do it again, hit button C to flag all Pdifs and Psums for times having the displayed parameter above the chosen level and return to the menu; or hit button D to return to the menu with no further flagging. Pdifs and Psums for other polarizations, IFs, and antennas may also be flagged depending on the setting of the ALL vs ONE POLARIZ, ALL vs ONE IF, and ALL vs ONE ANTENNA flags (shown at the bottom left of the display). Note that the flagging is done on the basis of the values of the displayed parameter of each polarization, IF, and baseline individually. This option is available in expert mode with abbreviation Abov and code letter A (or a). Use REPLOT to recompute and display altered Pdif/ -1 and Psum/ -1 values. C----------------------------------------------------------------------- FLAG AREA This option allows you to flag (delete) the Pdifs AND Psums from a range of times and a range of displayed parameter (Pdif, Psum, Pdif/ -1, Psum/ -1) values. Move the cursor to one corner of the area you wish to flag. The box outline will follow while the time of the data sample nearest the cursor within the box time range and the value corresponding to the cursor vertical position will be displayed in the top left corner of the TV. Hit button A to switch to setting the opposite corner of the area. Hit button A to switch between the opposite corners; hit button B to flag the data in the specified area and loop to set another area; hit button C to flag the data and return to the menu; or hit button D to return to the menu with no further flagging. Pdifs and Psums for other polarizations, IFs, and antennas may also be flagged depending on the setting of the ALL vs ONE POLARIZ, ALL vs ONE IF, and ALL vs ONE ANTENNA flags (shown at the bottom left of the display). Note that the flagging is based solely on the displayed parameter values in the polarization, IF, and baseline displayed in the edit area. When other polarizations, IFs, and baselines are also flagged it is simply the same times as those selected within the box in the edit area. This option is available in expert mode with abbreviation arEa and code letter E (or e). Use REPLOT to recompute and display the altered Pdif values. C----------------------------------------------------------------------- FLAG POINT This option allows you to flag (delete) Pdifs AND Psums one at a time by moving the cursor to the displayed parameter (Pdif, Psum, Pdif/ -1, Psum/ -1) and hitting buttons A or B. If you hit button C, the current point is deleted and the program returns to the menu. Button D returns to the menu with no further deletion. Pdifs and Psums for other polarizations, IFs, and antennas may also be flagged depending on the setting of the ALL vs ONE POLARIZ, ALL vs ONE IF, and ALL vs ONE ANTENNA flags (shown at the bottom left of the display). When other polarizations, IFs, and baselines are also flagged it is simply the same time as that selected by the cursor in the edit area. The cursor needs to be within 5 screen pixels of the displayed parameter and will take the nearest sample if there is more than one within this radius. This mode is useful for isolated outliers in a crowded display, but is more accurate in complex areas when used within a smaller frame. This option is available in expert mode with abbreviation pOin and code letter O (or o). This command flags only the selected point even if multiple polarizations and/or IFs are displayed. Use REPLOT to recompute and display altered Pdif/ -1 and Psum/ -1 values. C----------------------------------------------------------------------- FLAG QUICKLY This option allows you to flag (delete) Pdifs AND Psums one at a time by moving the cursor to the sample (carefully keeping the left mouse button untouched, i.e. up) and then clicking the left mouse button. If you hit buttons A, B, or C, the current point is deleted and the program returns to the menu. Button D returns to the menu with no further deletion. Pdifs and Psums for other polarizations, IFs, and antennas may also be flagged depending on the setting of the ALL vs ONE POLARIZ, ALL vs ONE IF, and ALL vs ONE ANTENNA flags (shown at the bottom left of the display). When other polarizations, IFs, and baselines are also flagged it is simply the same time as that selected by the cursor in the edit area. The cursor needs to be within 5 screen pixels of the displayed parameter and will take the nearest sample if there is more than one within this radius. This mode is useful for isolated outliers in a crowded display, but is more accurate in complex areas when used within a smaller frame. This mode is very quick, but requires you to be very careful in your use of the mouse and left mouse button. This option is available in expert mode with abbreviation Quik and code letter Q (or q). This command flags only the selected point even if multiple polarizations and/or IFs are displayed. Use REPLOT to recompute and display altered Pdif/ -1 and Psum/ -1 values. C----------------------------------------------------------------------- RESTORE TIME This option allows you to un-flag (restore) the data for a specific time. Move the cursor to the time you wish to restore. The vertical line will follow while the time of the point nearest the cursor will be displayed in the top left corner of the TV. Hit button A or B to restore the Pdif and Psum at that time and loop for more; hit button C to restore the time and return to the menu; or hit button D to return to the menu with no further restoration. Pdifs and Psums for other polarizations, IFs, and antennas may also be restored depending on the setting of the ALL vs ONE POLARIZ, ALL vs ONE IF, and ALL vs ONE ANTENNA flags (shown at the bottom left of the display). Note that, if the display is so crowded that more than one time is plotted at the indicated cursor position (in the horizontal direction only), then the a range of times is actually restored. Use REPLOT to recompute and display altered Pdif/ -1 and Psum/ -1 values. C----------------------------------------------------------------------- RESTORE AREA This option allows you to un-flag (restore) the Pdifs and Psums from a range of times and a range of displayed parameter (Pdif, Psum, Pdif/ -1, Psum/ -1) values. Move the cursor to one corner of the area you wish to restore. The box outline will follow while the time of the data sample nearest the cursor within the box time range and the value corresponding to the cursor vertical position will be displayed in the top left corner of the TV. Hit button A to switch to setting the opposite corner of the area. Hit button A to switch between the opposite corners; hit button B to restore the data in the specified area and loop to set another area; hit button C to restore the data and return to the menu; or hit button D to return to the menu with no further restoration. Pdifs and Psums for other polarizations, IFs, and antennas may also be restored depending on the setting of the ALL vs ONE POLARIZ, ALL vs ONE IF, and ALL vs ONE ANTENNA flags (shown at the bottom left of the display). Note that the restoration is based solely on the data values in the polarization, IF, and baseline displayed in the edit area. When other polarizations, IFs, and baselines are also restored it is simply the same times as those selected within the box in the edit area. Use REPLOT to recompute and display altered Pdif/ -1 and Psum/ -1 values. C----------------------------------------------------------------------- SMOOTH TIME RNG This option allows you to smooth (time average) the Pdifs, Psums, AND Pgains, from a range of times. The Tsys values are recomputed after the smoothing. Move the cursor to one end of the time range you wish to smooth. The vertical line will follow while the time of the point under the cursor will be displayed in the top left corner of the TV. Hit button A to switch to setting the other end of the time range. Move the cursor to the end point of the desired time range; the second line will follow. Hit button A to switch between the begin and end times; hit button B to smooth the Pdif' and Psums in the specified range and loop to set another time range; hit button C to smooth the Pdifs and Psums and return to the menu; or hit button D to return to the menu with no further smoothing. Pdifs and Psums for other polarizations, IFs, and antennas may also be smoothed depending on the setting of the All POL ARIZ, ALL IF, and ALL ANTENNA flags (shown at the bottom left of the display). Flagged Pdifs and Psums may receive "good" values in this process. Pdif and Psum are smoothed even if the Pdif/ -1 or Psum/ -1 are displayed in the edit area. Furthermore, this operation may only be undone by the REREAD TIME RNG option. See ENTER SMOOTH PS for a description of the smoothing functions available. The basic 2-point smoothing is used solely to replace flagged data. Use REPLOT to recompute and display altered Pdif/ -1 and Psum/ -1 values. C----------------------------------------------------------------------- REREAD TIME RNG This option allows you to re-read from the output file the Pdifs and Psums from a range of times. Move the cursor to one end of the time range you wish to re-read The vertical line will follow while the time of the point under the cursor will be displayed in the top left corner of the TV. Hit button A to switch to setting the other end of the time range. Move the cursor to the end point of the desired time range; the second line will follow. Hit button A to switch between the begin and end times; hit button B to re-read the Pdifs and Psums in the specified range and loop to set another time range; hit button C to re-read the Pdifs and Psums and return to the menu; or hit button D to return to the menu with no further re-reading. Pdifs and Psums for other polarizations, IFs, and antennas may also be re-read depending on the setting of the ALL vs ONE POLARIZ, ALL vs ONE IF, and ALL vs ONE ANTENNA flags (shown at the bottom left of the display). The Pdifs and Psums are read from the output table. Therefore, if only one IF is in memory at a time, these re-read Pdifs and Psums may not be the same as in the input table. The display is updated as the Pdifs and Psums are read. Use REPLOT to recompute and display altered Pdif/ -1 and Psum/ -1 values. C----------------------------------------------------------------------- ENTER SMOOTH PS This option allows you to type on the terminal (main AIPS window) the type and parameter(s) of the smoothing function. The current type and parameter(s) are displayed at the lower left of the screen. The process of smoothing is based on two windows on the time axis. The cursor is used to set a time-range (t1-t2) to be smoothed. Data from t1-W to t2+W, where W is the smoothing function window, are passed into a smoothing routine and the results used to replace the samples in the t1 through t2 range. Where "data" is Pdif or Psum The functions are: (1) 2PT Replace data at time t, if flagged, with the linearly interpolated value of the nearest sample above t and below t but within W/2 of t. (2) 2PTH Replace data at time t with the average of the data itself and the linearly interpolated value of the nearest sample above t and below t, but within W/2 of t. (3) BOX Replace data at time t with the average of all data within W/2 of t. (4) MWF Replace data at time t with the median of all data within W/2 of t. (5) GAUS Replace data at time t with the weighted average of all data samples within W/2 of t, using a Gaussian function of abs(time-t) of FWHM of W2. (6) EXP Replace data at time t with the weighted average of all data samples within W/2 of t, using a Exponential function of abs(time-t) of FWHM of W2. (7) LINE Replace data at time t with the weighted average of all data samples within W/2 of t, using a linear function of abs(time-t) of FWHM of W2. The ENTER SMOOTH PS asks you 2 or 3 questions: the first to set the type which is case-insensitive but must be left justified, the second to set W in integer seconds, and the third, if needed, to set the full-width at half maximum for the Gaussian and linear weighting functions. The smoothing is done without regard for source. C----------------------------------------------------------------------- ENTER PDIF RNG This option allows you to type on the terminal (main AIPS window) the range of Power Differences (Pon-Poff) that will be plotted. It asks you for two numbers, the lower limit and the upper. If the upper limit is > the lower limit, every plot of Pdif will cover this range, leaving out any points outside the range (so be careful). If you type 0 x, where x < 0, then the minimum of each plot will be 0 and the maximum will be self-scaling. Note that (erroneous) negative values of Pdif will not appear on the plots in this case. If you enter one or no numbers or if the second number is <= the first (but not the 0 x, x < 0), each Pdif lot will be self-scaling. The new power difference range, if selected, is displayed immediately on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- ENTER PSUM RNG This option allows you to type on the terminal (main AIPS window) the range of Power Sums (Pon+Poff) that will be plotted. It asks you for two numbers, the lower limit and the upper. If the upper limit is > the lower limit, every plot of Psum will cover this range, leaving out any points outside the range (so be careful). If you enter only one or no values of if the second is <= the first, all Psum plots will be self-scaling. The new power sum range, if selected, is displayed immediately on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- ENTER PGAIN RNG This option allows you to type on the terminal (main AIPS window) the range of Post-detector gains that will be plotted. It asks you for two numbers, the lower limit and the upper. If the upper limit is > the lower limit, every plot of Pgain will cover this range, leaving out any points outside the range (so be careful). If you enter only one or no values or if the second is <= the first, each Pgain plot will be self-scaling. The new post-detector gain range, if selected, is displayed immediately on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- ENTER TSYS RNG This option allows you to type on the terminal (main AIPS window) the range of Tsys (=Psum/Pdif/2*Tcal) that will be plotted. It asks you for two numbers, the lower limit and the upper. If the upper limit is > the lower limit, every plot of Tsys will cover this range, leaving out any points outside the range (so be careful). If you enter only one or no values or if the second is <= the first, each Tsys plot will be self-scaling. The new system temperature range, if selected, is displayed immediately on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- ENTER PD/P RNG This option allows you to type on the terminal (main AIPS window) the range of Pdif differences from the running mean that will be plotted. It asks you for two numbers, the lower limit and the upper. If the upper limit is > the lower limit, every plot of Pdif/ -1 will cover this range, leaving out any points outside the range (so be careful). Otherwise, each Pdif/ -1 plot will be self-scaling. The new Pdif difference range, if selected, is displayed immediately on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. If you enter one or no numbers, Pdif/ -1 plots will be self-scaling. C----------------------------------------------------------------------- ENTER PS/P RNG This option allows you to type on the terminal (main AIPS window) the range of Psum differences from the running mean that will be plotted. It asks you for two numbers, the lower limit and the upper. If the upper limit is > the lower limit, every plot of Psum/ -1 will cover this range, leaving out any points outside the range (so be careful). Otherwise, each Psum/ -1 plot will be self-scaling. The new Psum difference range, if selected, is displayed immediately on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. If you enter one or no numbers, Psum/ -1 plots will be self-scaling. C----------------------------------------------------------------------- ENTER PG/P RNG This option allows you to type on the terminal (main AIPS window) the range of Pgain differences from the running mean that will be plotted. It asks you for two numbers, the lower limit and the upper. If the upper limit is > the lower limit, every plot of Pgain/ -1 will cover this range, leaving out any points outside the range (so be careful). Otherwise, each Pgain/ -1 plot will be self-scaling. The new Pgain difference range, if selected, is displayed immediately on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. If you enter one or no numbers, Pgain/ -1 plots will be self-scaling. C----------------------------------------------------------------------- ENTER TS/T RNG This option allows you to type on the terminal (main AIPS window) the range of Tsys (= Psum/Pdif/2*Tcal) differences from the running mean that will be plotted. It asks you for two numbers, the lower limit and the upper. If the upper limit is > the lower limit, every plot of Tsys/ -1 will cover this range, leaving out any points outside the range (so be careful). Otherwise, each Tsys/ -1 plot will be self-scaling. The new Tsys difference range, if selected, is displayed immediately on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. If you enter one or no numbers, Tsys/ -1 plots will be self-scaling. C----------------------------------------------------------------------- SET SCAN LENGTH This option allows you to change the length in seconds of a "scan" which is the time interval over which the running mean is determined for the Pdif/ -1 and Psum/ -1 plots and editing. The new Pdif/ -1 and Psum/ -1 data, if selected, are displayed immediately on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- USE EXPERT MODE This option allows you to disable the menu as a form of command input and change to entering one-letter commands from the main AIPS window. The commands must be left-justified and followed by a carriage return and may be in either case. Prompt line(s) appear in the window showing 4-letter abbreviations of the available commands with the one-character code shown in upper case. Enter H or h for a display of the codes and their translation into menu items. Enter X or x to exit the expert mode and return to input via the menu. Note that only some menu items are available in this expert mode and the full help information (such as you are now reading) is not available. C----------------------------------------------------------------------- DO TV LOAD This option will cause the TV display to be updated completely. It is only displayed if you have previously selected the HOLD TV LOAD option. The reason to do this is to delay the screen update while you change more than one of its parameters, i.e., the edit parameter type, display range, antenna to edit, and/or secondary antennas. The status code LOAD PENDING is shown as soon as you have made a change which has not been displayed. When you select the DO TVLOAD option, it is replaced with the HOLD TV LOAD option. C----------------------------------------------------------------------- HOLD TV LOAD This option will cause the TV display to remain unchanged until the DO TV LOAD option is selected. The DO TV LOAD option is displayed if you have previously selected the HOLD TV LOAD option. The reason to do this is to delay the screen update while you change more than one of its parameters, i.e., the edit parameter type, display range, antenna to edit, and/or secondary antennas. When you select this option, it is replaced with the DO TV LOAD option. C----------------------------------------------------------------------- REPLOT This option will redo the full TV plot. It may be of use if the plot has not updated as expected. It is required to get a new computation Pdif/ -1 and Psum/ -1 after editing, smoothing, or restoration operations. C----------------------------------------------------------------------- CHAR MULT This option appears only when the task starts with characters that are currently, or by default, larger than the minimum (7x9 pixels). It allows you to set the scaling factor to an integer between 1 and 5. If you enter a value outside this range, the character size is not changed. The task tries to defend itself from menus that become too large for the screen. C----------------------------------------------------------------------- EXIT This option is used to exit the program. If you have done any flagging or smoothing, the Pdifs and Psums will be written back to the output SY table. The output table will remain cataloged as the previous highest version number plus one. C----------------------------------------------------------------------- ABORT This option is used to exit the program. The output SY table will be destroyed. Use this option if you have made no changes to the table, or if you distrust the changes you may have made. C----------------------------------------------------------------------- NEXT POL/IF If there are enough polarizations and IFs in the SY table, this option lets you switch to the "next" correlator. It selects the other polarization (if there are 2) and also selects the next IF if the initial polarization was the highest available. Thus if there are R and L polarizations, it goes from R/1 to L/1 to R/2 to L/2 to ..., eventually circling back to R/1. If CROWDED was true, this option changes the display to a single correlator even if > 1 IF or polarization was plotted when it was selected. The new data are displayed immediately on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. This option is available in expert mode with abbreviation Quik and code letter C (or c). C----------------------------------------------------------------------- SWITCH POLARIZ If there are two polarizations in the SY table, this option lets you switch between them to select the Pdifs and Psums to be displayed and used in editing. If CROWDED was true, then the display of both polarizations at once is also selected by this SWITCH. The Pdifs and Psums for the new polarization are displayed immediately on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new Pdifs and Psums. C----------------------------------------------------------------------- SWITCH ALL POL This option lets you toggle between having the following flag, smooth, and re-read commands apply to both polarizations and having them apply only to the current polarization. The status lines on the bottom left of the TV screen reflect the current value of this option. C----------------------------------------------------------------------- ENTER IF If you included more than one IF with adverbs BIF and EIF, this option lets you select which one will be displayed and used in editing. If there are more than two IFs or CROWDED was true, you will be prompted to type the number of the desired IF. If CROWDED was true, you may enter 0 to have all IFs displayed at the same time. If there are just two IFs (and CROWDED was false), the program simply switches to the other one. If flags are to be applied to a single IF, they are applied to the IF selected with this option. If all IFs were not read into memory at the start of the job (due to lack of space), then the Pdifs and Psums for the current IF are written to the output file (if any flagging or smoothing might have been done) as the Pdifs and Psums for the new IF are read in. The Pdifs and Psums are displayed immediately on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new Pdifs and Psums. C----------------------------------------------------------------------- SWITCH ALL IF This option lets you toggle between having the following flag, smooth, and re-read commands apply to all IFs, having them apply only to the current IF, and having them apply to a range of IFs. The status lines on the bottom left of the TV screenreflect the current value of this option. C----------------------------------------------------------------------- SWITCH ALL TIME This option lets you toggle between having the following FLAG ABOVE and FLAG BELOW commands apply to all times and having them apply only to the times displayed in the current edit window (the time range of the frame). C----------------------------------------------------------------------- SWITCH ALL SOURC This option lets you toggle between having the following flag commands apply to all sources and having them apply only to the selected sources. C----------------------------------------------------------------------- SWITCH ALL ANT This option lets you toggle between having the following flag, smooth, and re-read commands apply to all antennas and having them apply only to the current antenna. The status lines on the bottom left of the TV screen reflect the current value of this option. C----------------------------------------------------------------------- ENTER ANTENNA This option allows you to type on the terminal (main AIPS window) the number of the antenna to be used for the main display and for editing. The Pdifs and Psums for the new antenna are immediately displayed on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new Tsys's. The selected parameter (Pdif, Psum, Pdif/ -1, Psum/ -1) for this primary antenna are displayed over the current time frame in the editing area and the selected secondary parameter (if any) is displayed in the secondary area. C----------------------------------------------------------------------- ENTER OTHER ANT This option allows you to type on the terminal (main AIPS window) the numbers of up to ten other antennas to be displayed above the display of the main editing and secondary windows. These comparison displays use the same time frame and parameter type as the editing window. To display fewer than ten other antennas, simply hit Enter after listing those that you do want. You may have no comparison windows if you want to see the largest possible display of the main editing window (hit Enter with no non-zero values for this option). The data for the new The selected parameter (Pdif, Psum, Pdif/ -1, Psum/ -1) for the new secondary antennas are immediately displayed on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- NEXT ANTENNA This option lets you change to the next antenna in SNEDT's internal list for your primary antenna. The list of other antennas is not changed unless the new antenna occurs there. In that case, the new antenna is removed from the list and a new higher numbered antenna is added at the end of the list. The edit and secondary viewing areas will now contain data from the new primary antenna. The data for the new antennas are immediately displayed on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. This option is available in expert mode with abbreviation Nant and code letter N (or n). C----------------------------------------------------------------------- PLOT ALL TIMES This option allows you to select the full time range of the data as the range to be displayed in all windows. The selected parameter(s) for the new time range are immediately displayed on the TV unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- SELECT FRAME This option allows you to select the time range in the selected parameter(s) (Pdif, Psum, Pdif/ -1, Psum/ -1) to be displayed in the editing and secondary window using the TV cursor. The selected parameter(s) are first re-displayed using the full time range (unless the full time range was already displayed). Move the cursor to one end of the desired time range. Hit button A or B to switch to setting the other time limit. Note that you are allowed to make the time range as large or small as you want. Displays that have more than one time plotted in a single horizontal TV pixel are harder to edit accurately but will be quicker than having to do multiple frames when accuracy is less essential. Hit buttons A or B to switch to the other limit, hit buttons C or D to select the frame and return to the menu. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. This option is available in expert mode with abbreviation Fram and code letter F (or f). C----------------------------------------------------------------------- NEXT FRAME This option causes the current frame to change to the next higher time range. The "frame" is that time range in the data available for editing in the edit window. The width of the frame is not changed. The boundaries of the new current frame are shown in the top plot. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the DO TV LOAD option is displayed and must be selected to see the new data (Pdif, Psum, etc). C----------------------------------------------------------------------- PREVIOUS FRAME This option causes the current frame to change to the next lower time range. The "frame" is that time range in the data available for editing in the edit window. The width of the frame is not changed. The boundaries of the new current frame are shown in the top plot. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data (Pdif, Psum, etc). C----------------------------------------------------------------------- TV ZOOM This option allows you to set the zoom factor and center to blow up the data plot for more accurate cursor positioning. The display is actually shown in zoom only during flagging, un-flagging and re-reading operations (where zoom may help you point more accurately) and during the setting of the zoom. The cursor position controls the zoom center, buttons A and B increment the zoom, button C decrements the zoom, and button D ends the zoom setting and returns to the menu. Instructions appear on the terminal. Note that selecting a small frame is more accurate than simply blowing up a crowded display. C----------------------------------------------------------------------- OFF ZOOM This option resets any zoom factors and zoom center. The display is actually shown in zoom only during flagging, un-flagging and re-reading operations (where zoom may help you point more accurately) and during the setting of the zoom. C----------------------------------------------------------------------- SHOW PDIF This option specifies that Power differences (Pon-Poff) are to be displayed on the TV and used in the editing. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- SHOW PSUM This option specifies that Power sums (Pon+Poff) are to be displayed on the TV and used in the editing. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- SHOW PGAIN This option specifies that Post=detector gains are to be displayed on the TV and used in the editing. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- SHOW TSYS This option specifies that scaled system temperatures (Tsys = Tcal * Psum/Pdif/2) are to be displayed on the TV and used in the editing. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- SHOW PDIF/ -1 This option specifies that the differences between Power difference and its running mean (scaled by the running mean to keep all antennas on a similar scale) are to be displayed on the TV and used in the editing. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- SHOW PSUM/
-1 This option specifies that the differences between Power sum and its running mean (scaled by the running mean to keep all antennas on a similar scale) are to be displayed on the TV and used in the editing. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- SHOW PGAIN/
-1 This option specifies that the differences between Post-detector gain and its running mean (scaled by the running mean to keep all antennas on a similar scale) are to be displayed on the TV and used in the editing. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- SHOW TSYS/
-1 This option specifies that the differences between Tsys and its running mean (scaled by the running mean to keep all antennas on a similar scale) are to be displayed on the TV and used in the editing. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new data. C----------------------------------------------------------------------- SHOW ALSO PDIF This option specifies that Power differences for the primary antenna are to be displayed on the TV in the secondary display area. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new solutions. C----------------------------------------------------------------------- SHOW ALSO PSUM This option specifies that Power sums for the primary antenna are to be displayed on the TV in the secondary display area. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new solutions. C----------------------------------------------------------------------- SHOW ALSO PGAIN This option specifies that post-detector gains for the primary antenna are to be displayed on the TV in the secondary display area. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new solutions. C----------------------------------------------------------------------- SHOW ALSO TSYS This option specifies that scaled system temperatures (Tsys = Tcal * Psum/Pdif/2) for the primary antenna are to be displayed on the TV in the secondary display area. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new solutions. C----------------------------------------------------------------------- SHOW ALSO DPDIF This option specifies that the differences between the power difference and its running mean, scaled by that mean, for the primary antenna are to be displayed on the TV in the secondary display area. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new solutions. C----------------------------------------------------------------------- SHOW ALSO DPSUM This option specifies that the differences between the power sum and its running mean, scaled by that mean, for the primary antenna are to be displayed on the TV in the secondary display area. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new solutions. C----------------------------------------------------------------------- SHOW ALSO DPGAIN This option specifies that the differences between the post-detector gain and its running mean, scaled by that mean, for the primary antenna are to be displayed on the TV in the secondary display area. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new solutions. C----------------------------------------------------------------------- SHOW ALSO DTSYS This option specifies that the differences between Tsys and its running mean, scaled by that mean, for the primary antenna are to be displayed on the TV in the secondary display area. The screen is updated immediately, unless the HOLD TV LOAD option was selected. In that case, the status code LOAD PENDING is shown and the DO TV LOAD option is displayed and must be selected to see the new solutions. C-----------------------------------------------------------------------