Simulating A Custom Alarm; Testing Input Dry Loops; Testing Alarm Relays - Sagem -LINK F Installation And Operation Manual

SAGEM-LINK F
Installation and Operation Manual
Decrease slowly remote transmit power in order to have a receive level below –60 dBm. Take care to
avoid to break the link, because in this case, it will not be possible to establish again communication
from the local terminal.
Once the test has been done, do not forget to restore previous settings.

2.7.5 - Simulating a Custom Alarm

To simulate a Custom alarm, configure " Local Aux1 Alarm" on the "Custom relay" (use the menu
Alarms / Config / Local, and select the IDU tab).
Then short circuit pins 2 and 20 of the DB37 connector (LOOP INPUT #1 – A and LOOP INPUT #1 –
B).
The alarm is displayed in the screen Alarm/View/Local - ALL tab. Verify that the alarm is cleared
when the loop is in open position.

2.7.6 - Testing Input Dry Loops

Affect " Local Aux1 Alarm", " Local Aux2 Alarm", " Local Aux3 Alarm" and " Local Aux4 Alarm" on the
Custom relay, and verify the alarm changes by short-circuiting or opening the loops.

2.7.7 - Testing Alarm Relays

For this test, it is necessary to use a multimeter to check continuity between contacts.
The three contacts of each relay are available in the DB 37 connector (see Figure 2.1) :
When the IDU is not powered, the NC is connected to the Common, while the NO is in open position.
When the IDU is powered and when there is no alarm :
•
NO is connected to Common
•
NC is not connected to Common
When there is an alarm on the relay under test (use the above procedure to simulate alarms) :
• NC is connected to Common
•
NO is not connected to Common
Simulate various alarms, and test the corresponding relays upon this procedure.
Reproduction and communication prohibited without the written permission of Sagem Communication
Normally Open (NO)
Normally Closed (NC)
Common
Figure 2.1 : Relay Contacts
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Issue 04 : July 2005