Visual Circuits Firefly User Manual page 285

Examples:
0DS
Turns on the graphic overlay for all channels of the Firefly. If the graphic overlay
was already enabled on a channel at the time this command was received, no
change is made to that channel.
1@0DS
Turns off the graphic overlay for channel 1. If the graphic overlay was already off
for that channel no change is made.
Frame Number Request (?F)
Command:
Requests the file position in the current MPEG file in frame number format.
Format:
?F<CR>
Response:
<framenumber><CR>
Explanation:
This command can be global or channel specific. If received as a global
command, the Firefly will respond with the file position for all 4 channels in order
(1, 2, 3 and 4). If a channel is specified, only that channel's frame position is
returned:
Examples:
Command
1@?F <CR>
?F <CR>
Time Code Request (?T)
Command:
Requests the file position in the current MPEG file in time code format.
External Control Commands
Response
02045 <CR>
01202 <CR>
00101 <CR>
08114 <CR>
10141 <CR>
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