Comtech EF Data CIM-300L - Manual (Page 145)

CiM-300L IP Enabled Satellite Modem Rev. 1
System Checkout/Fault Isolation CD/CIM300L.IOM
119
7.1.6.1 F
AULTS
T
REE
Refer to Figure 7-3 for faults monitored by the modem, and the action taken at each
occurrence of that fault.
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1
TEST NOTE 1 2 3 4 5
MODULATOR FAULTS
IF SYNTHESIZER X X X
DATA CLOCK SYN X X X
I CHANNEL X X X
Q CHANNEL X X X
AGC X X X
MODEM REF ACT X X
MODULE X X X
CONFIGURATION X X X
MODEM REF PLL X X X
DEMODULATOR FAULTS
CARRIER DETECT X X
IF SYNTHESIZER X X
I CHANNEL X X
Q CHANNEL X X
BER THRESHOLD X X
MODULE X X
CONFIGURATION X X
LNB CURRENT X X
OUTDOOR UNIT (BUC)
CURRENT
VOLTAGE
TEMPERATURE
PLL LOCK x x
CHECKSUM
COMMON EQUIP FAULTS
BATTERY/CLOCK X
-12V POWER SUPPLY X X
+12V POWER SUPPLY X X
+5V SUPPLY X X
CONTROLLER X X
TEST NOTE Fault/Alarm Relay Test Points Connector/Pins
1 TX FAULT Pin 4 (NO), 5 (COM), 6 (NC) ****
2 RX FAULT Pin 7 (NO), 8 (COM), 9 (NC) ****
3 COM EQ FAULT Pin 1 (NO), 2 (COM), 3 (NC) ****
4 TX ALARM #2 Pin 4 (NO), 5 (COM), 6 (NC) +
5 RX ALARM #3 Pin 7 (NO), 8 (COM), 9 (NC) +
6 PRIMARY ALARM Pin 43 (NO), 10 (COM), 27 (NC) +
7 SECONDARY ALARM Pin 44 (NO), 11 (COM), 28 (NC) +
8 DEF MAINT ALARM Pin 17 *****
**** A connection between the common and N.C. contacts indicate fault.
***** Signal is open collector high impedance if faulted.
+ A connection between the common and N.O. contacts indicate alarm.
Figure 7-3 . SDM-300L F AULT T REE