Avid Technology Pro Tools SYNC HD - Page 84

Pro Tools | SYNC HD Guide78
Bi-phase/Tach/GPI/Pilot Port (Accessory Port) Connector Pin Assignments
Pin # Name Description
1
GPOUT0 GPI TTL-level output 0
2
GPOUT1 GPI TTL-level output 1
3
GPOUT0_A GPI Relay 0, contact A
4
GPOUT0_B GPI Relay 0, contact B
5
GPOUT1_A GPI Relay 1, contact A
6
GPOUT1_B GPI Relay 1, contact B
7
GPOUT2_A GPI Relay 2, contact A
8
GPOUT2_B GPI Relay 2, contact B
9
GPOUT3_A GPI Relay 3, contact A
10
GPOUT3_B GPI Relay 3, contact B
11
OPTRETURN Return from Bi-phase/Tach opto-isolators
12
BIPHB_I Input to Bi-phase/Tach opto-isolator B
13
BIPHA_I Input to Bi-phase/Tach opto-isolator A
14
GND Chassis ground
15
PILOT_IN– Pilot tone input, negative
16
PILOT_IN+ Pilot tone input, positive
17
RET0 Return from GPI opto-isolator “0”
18
GPIN0 Input to GPI opto-isolator “0”
19
RET1 Return from GPI opto-isolator “1”
20
GPIN1 Input to GPI opto-isolator “1”
21
RET2 Return from GPI opto-isolator “2”
22
GPIN2 Input to GPI opto-isolator “2”
23
RET3 Return from GPI opto-isolator “3”
24
GPIN3 Input to GPI opto-isolator “3”
25
VDD +12V DC
Shell
GND Connected to chassis ground