TANDBERG TT1260 Reference Manual page 71

5.1 Introduction
There are two Front Panel LEDs that indicate the status of the TT1260.
There is also one summary alarm relay and six additional alarm relays
(optional). These are used to indicate abnormal performance of the unit.
5.2 Location of the Alarm and Lock LEDs
The red ALARM LED is used to indicate an equipment fault condition, for
example a missing or faulty input signal. It should be off during correct
operation, although it may be lit briefly during power-up.
The green LOCK LED is used to indicate that the equipment is locked to a
transport stream when lit, and indicates correct conditions and correct
system functioning.
Figure 5.1: Front Panel LEDs
5.3 ALARM LED and Summary Relay
The TT1260 supports a summary alarm signal that is active when one or
more of the individual monitored alarm conditions are active. It allows
masking of unwanted alarm conditions so that they do not contribute to
the summary alarm. Configuration of alarms is via the Front Panel and
remote control interfaces. The state of the summary alarm is reflected by
the ALARM LED on the front panel where red represents an alarm, and off
represents no alarm. The summary alarm relay is active when the alarm
LED is active.
These indicators provide a high-level indication of an alarm within the unit.
The alarm list depends on the unit model. The unit continuously monitors
for the following alarm conditions during normal operation: (if not masked,
see Menu #5, Annex C, Menus):
·
No transport stream
·
Video not running
·
Audio 1 not running
·
Audio 2 not running
Reference Guide: TT1260 Contribution Receiver
ST.RE.E10100.1
Alarm LED
Lock LED
Alarms
Page 5-3