Grass Valley 7600REF - Manual (Page 21)

7600 SD/HD/MHD-REF — Instruction Manual 21
Installation
These outputs also offer a combination of the following LTC (Longitudinal
Timecode) features with LTC capability (7600 MHD-REF model):
• Digital VITC (SMPTE S266) for standard definition signals only, and
• ATC (SMPTE RP188) for standard definition or high definition SD sig-
nals.
Analog Audio/Remotes
The 25 pin Sub-D connector labeled ANALOG AUDIO/REMOTES pro-
vides a serial communication port, the analog audio output tones, power
fail output status, fan failure status, and the GPI connections.
Pinouts for the ANALOG AUDIO/REMOTES connector are given in
Table 1 . Each of the connector function is described in detail in this section.
Fan Failure Output
This open collector output senses the current drawn by the cooling fans
fitted to the enclosure. The detector indicates a failure if a fan is stuck
and/or an open circuit is detected.
Table 1. ANALOG AUDIO/REMOTES Connector Pinouts
ANALOG AUDIO/REMOTES Pin Function Pin Function
1 Fan OK -1 (Pair with pin 16. Closed if OK) 14 Power OK 1
2 RS422 CTS – (minus) 15 Power OK 2
3 RS422 RXD + (plus) 16 Fan OK - 2
4 RS422 TSD + (plus) 17 GPIO - Output 1
5 RS422 RTS – (minus) 18 GPIO - Input 2
6 RS422 TXD – (minus) 19 GPIO - Input 1
7 GND 20 RS422 CTS + (plus)
8 RS422 RXD – (minus) 21 GPIO - Output 2
9 GND 22 RS422 RTS + (plus)
10 + 12V DC / 0.3A 23 Analog Audio Out 1 – (minus)
11 Analog Audio Out 1 + (plus) 24 Analog Audio Out 2 – (minus)
12 Analog audio Out 2 + (plus) 25 GND
13 GND
Pin 1
Pin 13
Pin 14
Pin 25
D-25 Female