Paradise P300 specifications Backward Alarms, Menu Opt

Backward Alarms

Pin Number

1

2

18

3

19

4

20

5

21

22

23

24

25

7

6

Description

BA 1-4 Common

BA1 N/O

BA1 N/C

BA2 N/O

BA2 N/C

BA3 N/O

BA3 N/C

BA4 N/O

BA4 N/C

BA1 Input

BA2 Input

BA3 Input

BA4 Input

Rx Summary fault output (link to BA in)

Ground

N/O indicates normal open in the normal, non-alarm state & N/C normally closed in the non-alarm state. Unlike the modem fault relays, the backward alarms are not normally energised, and fall back to the `Normal` state when modem power is removed. The modem deferred alarm acts as a summary backward alarm and activates when any backward alarm is received (this does fall back to the `Fail` state when power is removed).

Backward alarm inputs float to the `Good` state (high =+5V) and indicate `Fail` when connected to 0V. The Rx summary fault is an open collector output, 0V = Fail, open collector=OK. From the front panel the backward alarm inputs (BA x)can be set as follows (E=Ext, A=Auto-Rx fail, O=OK):

	Menu Opt	BA 1	BA 2	BA 3	BA 4
Mode 1	EEEE	Ext patch	Ext patch	Ext patch	Ext patch
Mode 2	AEEE	Rx Fail	Ext patch	Ext patch	Ext patch
Mode 3	AOOO	Rx Fail	Good	Good	Good
Mode 4	AAAA	Rx Fail	Rx Fail	Rx Fail	Rx Fail

If external patching is required, connect the Rx summary fault to the required BA input and any other modem fail outputs to the appropriate other BA inputs. Leave unused inputs floating.

In IDR modes these are used for the 4 standard IDR backward alarms.

In IBS modes BA 1 indicates the normal single IBS backward alarm status (mirrored by the unit deferred alarm). For multidestinational IBS carriers it is possible to operate the P300 in IBS mode, but use 4 separate backward alarms as per IDR. From the front panel select Service as `Other`, based on `IBS`, and follow the screen prompts.

P300H P300 Series Modem Installation and Operating Handbook Page 188