Green Indications; Yellow Indications; Red Indications - Lab.gruppen PLM Series Operation Manual

Output Clip
All output channels are monitored by a suite of
protection circuits that include a Current Peak
Limiter (CPL) and an Inter-Sample Voltage Peak
Limiter (ISVPL). See section 7.3 Amplifier and Load
Protection Systems for further information. If the CPL
protection device is active, or a voltage clip occurs,
then the appropriate Channel Output LED will flash
red. In addition, a corresponding text warning will
also be displayed on the screen.
Figure 9-9: CPL Active
Figure 9-10: Voltage Clip
Warning or Fault Indications
If certain parameters within the PLM approach or
exceed preset limits, a warning condition or fault
condition may arise. One or more LEDs will then
provide an appropriate visual indication. A textual
on-screen description of the condition will also be
displayed adjacent to the LED(s).
The LEDs can show three colors, each conveying a
different status.

9.10.2.1 Green indications

A green indication of LEDs 2, 3 and 5-8 confirm
that inputs or outputs are unmuted and operating
normally.

9.10.2.2 Yellow indications

Yellow LED indications are reserved for PLM
warnings. See Table 9-2.
An 'Event Log' file logs these warnings (with date
and time stamps) within the PLM. See Chapter 5.3
of the DLC User Manual PLM Edition Addendum
for further information on accessing the Event Log.
A detailed description of each warning can be found
in Table 12-1.

9.10.2.3 Red indications

Red LED indications are reserved for PLM faults.
See Table 9-3.
FRONT PANEL INTERFACE 9
An 'Event Log' file records these faults (with date
and time stamp) within the PLM. See Chapter 5.3 of
the DLC User Manual PLM Edition Addendum for
further information on accessing the Event Log.
A detailed description of each warning can be found
in table 12-1.
PLM Series Operation Manual 33