Converter (Db-9 Female) For Video Deck Control; Table A-14 Rs-422 Converter (Db-9 Female): Workstation End; Table A-15 Rs-422 Converter (Db-9 Female): Video Deck End - Silicon Graphics O2+ Hardware Reference Manual

RS-422 Converter (DB-9 Female) for Video Deck Control
007-4486-001
The Silicon Graphics RS-422 converter converts the O2+ workstation's RS-232 Transmit
Data and Receive Data signals to SMPTE 207M-compatible RS-422 for video deck control.
Table A-14 shows the pinouts for the O2+ workstation end.
RS-422 Converter (DB-9 Female): Workstation End
Table A-14
Workstation Signal
Description Pin Number
DCD 1
RXD 2
TXD 3
DTR 4
SG 5
DSR 6
RTS 7
CTS 8
RD 9
Table A-15 shows the pinouts for the video deck end.
Table A-15 RS-422 Converter (DB-9 Female): Video Deck End
Video Deck End Signal
Description
Frame GND
Spare (Priority In)
Controller Rcv A&B
Controller Xmit A&B
Signal GND
Frame GND
Voltage With Regard to Ground Received From or
Supplied to Workstation
Passed through from RS-422 spare
Supplies -5V typical low, +5V typical high (RS-423)
0V maximum low, 1.6V minimum high
Requires -12V maximum low, +12 V minimum high
0
Not connected
Requires +12V to power the converter
Not connected
Not connected
Voltage
Pin Number (Across Pair)
1 Not connected
5 Passed through to workstation DCD
2(-) and 7 Requires 0V maximum low, 1.6V minimum high
8(-) and 3 Supplies 0V typical low, +5V typical high
4, 6 0
9 Not connected
Serial Cables and Converters
205