
Appendix C
Module Parameter Descriptions
260 4025561
Rev
[1] This alarm threshold value is relative to the nominal alarm value.
[2] This value depends on the pre-amplifier type. See Pre-Amplifier Nominal
Alarm Values (on page
259) for possible types and values.
[3] This value is set in manufacturing based on the characteristics of the laser
diode, and may vary from module to module.
Pre-Amplifier Module Alarm Data Parameters
Module alarms are set at the factory and may not be adjusted by the user. The
module alarm data for this module is shown below.
Alarm Function
Major
Low
Threshold
Minor
Low
Threshold
Minor
High
Threshold
Major
High
Threshold
Hys-
teresis
Typical
Range/
Nom.
Value
LasTemp
(not
adjustable)
Laser
temperature
[1]
-20.0 -15.0 15.0 20.0 1.0 25.0°C
Enable Module ON
or OFF [2]
na na na na na OK or
Fault [3]
IntPs Internal
power
supplies
fault [2]
na na na na na OK or
Fault
PsOk Bus input
voltage [2]
na na na na na OK or
Fault
Service Service
mode
na na na na na OK or
Fault [4]
Note:
[1] This alarm threshold value is relative to the nominal alarm value.
[2] This alarm sets the unit to the safe state wherein the lasers are turned off,
disabling the optical output.
[3] The factory default is Fault, where the alarm values OK and Fault correspond
to control values ON and OFF, respectively. The module must be user-enabled
following installation.
[4] The alarm values OK and Fault correspond to the control values OFF and
ON, respectively.
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