Avid Technology Digidesign USD User Manual page 90

Connector Pin Assignments
PC Serial Port
Pin #
1
2
3
4
5
6
7
8-25
Shell
Bi-phase/Tach/GPI/Pilot Port (Accessory Port)
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
86 Universal Slave Driver
Name Description
GND Connected to chassis ground
TX_IN Received data (input to USD)
RX_OUT Transmitted data (output from USD)
RTS_IN Request To Send (input to USD)
CTS_OUT Clear To Send (output from USD)
NC No Connection
GND Connected to chassis ground
NC No Connection
GND Connected to chassis ground
Name Description
GPOUT0 GPI TTL-level output 0
GPOUT1 GPI TTL-level output 1
GPOUT0_A GPI Relay 0, contact A
GPOUT0_B GPI Relay 0, contact B
GPOUT1_A GPI Relay 1, contact A
GPOUT1_B GPI Relay 1, contact B
GPOUT2_A GPI Relay 2, contact A
GPOUT2_B GPI Relay 2, contact B
GPOUT3_A GPI Relay 3, contact A
GPOUT3_B GPI Relay 3, contact B
OPTRETURN Return from Bi-phase/Tach opto-isolators
BIPHB_I Input to Bi-phase/Tach opto-isolator B
BIPHA_I Input to Bi-phase/Tach opto-isolator A
GND Chassis ground