Sierra Video Ponderosa 3G Series Routing Switcher Family with MediaNav - Manual (Page 27)

PONDEROSA
21
GPI
The 25 pin D connector on the rear of the Master CPU frame provides relay contacts
under software control that can be used to indicate a failure of router frame power
supplies and fans.
The female 25 pin D connector on the rear of the CPU frame provides access to 5 relay
contact sets (GPI-out 0-4). These contact sets are used to indicate failures in the router
frames.
The female 25 pin D connector also provides for “GPI inputs” where an external contact
closure can cause an “event”. GPI inputs need to be grounded to initiate event.
The GPOs are defined to behave as follows:
Name Function
GPO-0 Open when power supply 1 is on; closed otherwise
GPO-1 Open when power supply 2 is on; closed otherwise
GPO-2 Open when the fans for power supply 1 are functioning; closed otherwise
GPO-3 Open when the fans for power supply 2 are functioning; closed otherwise
GPO-4 Open when Error LED is on; closed otherwise (See Note in Section 5.1)
GPI/O settings are described in the chart below;
* Contact the SVS Factory for “Future Use” updates.
Pin # Connection Alarm Description
1 GPI-4 out N/O
* Future Use
2 GPI-4 out Common
3 N/C Not Used
4 GPI-2 out N/O
Failure- Fan Power Supply # 1
5 GPI-2 out Common
6 N/C Not Used
7 GPI-0 out N/O
Failure- Power Supply # 1
8 GPI-0 out Common
9 GPI-4 in * Future Use
10 GPI-3 in * Future Use
11 GPI-2 in * Future Use
12 GPI-1 in * Future Use
13 GPI-0 in Close All GPI- out Contacts
14 N/C Not Used
15 GPI-3 out N/O
Failure- Fan Power Supply # 2
16 GPI-3 out Common
17 N/C Not Used
18 GPI-1 out N/O
Failure- Power Supply # 2
19 GPI-1 out Common
20 N/C Not Used
21 GND Ground Connection for GPI in
22 GND Ground Connection for GPI in
23 GND Ground Connection for GPI in
24 GND Ground Connection for GPI in
25 GND Ground Connection for GPI in