PROTO (Protocol) is the type of control protocol used by your VCR or camcorder.
Check your VCR/camcorder manual to determine the correct choice. Choices are:
LANC Sony Control-L
PANA Panasonic Control-M
232 RS-232 (Baud Rate and Character Format choices
display)
422 RS-422
IR Infrared; Record VCR only. (CMD choices display)
NONE Not used, or a noncontrollable video source is
attached to the corresponding port on a mixer/switcher.
• VCR is the VCR Table number to use. See Appendix A for a full list of choices.
• PREROLL is the number of seconds the VCR/camcorder should preroll before a scene
is played. Typically this value is 05–five seconds. It may need to be increased to 12 for
play VCRs/camcorders if insert editing is used and a VCR with PANA protocol is the
Record VCR.
For Record VCRs, only VCRs that require a preroll are prerolled. For the most part, this is
VCRs with RS-422 protocol. Leave the value at 05.
• TCSRC (Time Code Source) and TC (Time Code Type). TCSRC specifies whether
time code is sent through the Edit Control Cable (INT) or through an audio/video cable
attached to the Time Code IN port (EXT). TC specifies the type of time code being used.
- If Time Code is not used, select TCSRC=INT and TC=NONE.
- For most RS-232 and RS-422 VCRs, select TCSRC=INT and TC=NONE, VITC,
LTC or RCTC, depending on which time codes are available and selected on the
VCR.
- For LANC VCRs and camcorders with RCTC, select TCSRC=INT and
TC=RCTC.
- For LANC and PANA play VCRs with VITC or LTC striped on the play tape,
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