AIPS HELP file for TVON in 31DEC20
As of Mon Aug 10 2:42:07 2020
TVON: Verb which turns on TV channel(s).
COLORS 0.0 3.0 TV colors to enable
TVCHAN 1.0 16.0 TV channels to turn on
The desired channels may be given instead as an
immediate argument to TVON. In that case, the
channel specification is a BINARY mask of the desired
channels. Example: TVON(13) will turn on TV channels
1, 3, and 4 (values 1, 4, 8).
Use: Turn on (enable) one or all colors on one or more gray-scale
image channels on TV. Does not affect status (on or off) of
colors or channels not specified.
Note that, if TVON is used in a FOR or WHILE loop or in an
IF-THEN-ELSE construct, then the immediate argument is required.
Otherwise, some item necessary to the loop/construct will be
taken as the immediate argument.
Adverbs: TVON takes an immediate argument specifying in BINARY code
which channels to turn on. E.g. TVON(43) enables channels 1,
2, 4, and 6 (values 1 + 2 + 8 + 32 = 43).
COLORS.....Specifies which colors to enable. 0 = all, 1 = red,
2 = green, and 3 = blue.
TVCHAN,,...TV channel to turn on. Only used if immediate argument
is omitted and specifies a single value. 0 -> 1.