TANDBERG SM6610, Справочное руководство

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Preventive Maintenance and Fault-finding
Page 8-12 Reference Guide: SM6610, SM6615, SM6620 and SM6625 Satellite Modulators
ST.RE.E10152.2
8.9.7 IF Card (Slot 1) Alarms
The alarms sourced by the IF card are listed in Table 8.8 and Table 8.9.
Table 8.8: IF Card Alarms – IF Output Models SM6610 and SM6620
Terminal Alarm Message Front Panel Alarm Message Severity Level
IF Carrier Frequency Unlocked IF Carrier Frequency Unlocked Critical
IF Power Level Error IF Power Level Error Major
IF Output Muted IF Output Muted Critical
Table 8.9: IF Card Alarms – L-Band Output Models SM6615 and SM6625
Terminal Alarm Message Front Panel Alarm Message Severity Level
IF Carrier Frequency Unlocked IF Carrier Frequency Unlocked Critical
IF Output Muted IF Output Muted Critical
Up-converter Power Shutdown UpConv Power Shutdown Major
8.9.8 Front Panel Alarm LED
The red front panel Alarm LED is lit when any unmasked alarm condition
exists.
NOTE…
The front panel display indicates the alarm severity level by using a numeric index. These are
described under Alarm Severity Levels on page 8-9.
8.9.9 Alarm and Fail Relays
The alarm and fail relay contacts (described under Signal Connections in
Chapter 2, Installing the Equipment) are driven by the equipment’s alarms
and warnings. Table 8.10 shows the effect of masking on the relays and
the Alarm LED.
Table 8.10: Effect of Masking the Alarm and Fail Conditions
Mask Relay Alarm LED
Off None -
Alarm Alarm
✔
Fail Alarm
+
Fail
✔