THORLABS ITC502 Operation Manual page 97

[1315, "Attempt to switch on laser while temperature is
out of window"]
Category:
Possible reason:
[1317, "Limit of temperature/resistance reached"]
Category:
Possible reason:
[1318, "No bias change during laser on"]
Category:
Possible reason:
[1319, "No PD polarity change during bias on"]
Category:
Possible reason:
Execution Error
The actual temperature of the laser diode is outside the
temperature window.
Execution Error
The set value of the temperature/resistance reached the
temperature limit.
Execution Error
The bias voltage may not be switched on or off during laser on.
Execution Error
The polarity of the monitor diode may not be changed with the
bias voltage on.
3.7 Error messages of the ITC5xx
ITC500 / page 89