3.8 Status reporting
ITC500 / page 95
3.8.8 Device error condition register (DEC)
The bits of this register show the errors, that occur during operation (device errors).
The bits are active high.
If the error disappears, the bits are reset to low.
For an ITC5xx bits 0 ... 6, 8 are used:
(0) Over temperature Internal temperature too high. Wait until the ITC5xx has
cooled down. Maintain proper air flow.
(1) Open circuit Cable to the laser diode has opened.
Compliance voltage not high enough
(2) Interlock open Interlock line is open.
(3) Current limit The current limit is reached and the protection circuit is
active now. Noise and drift specs are not valid any more.
(4) Temperature window The temperature module detected a temperature window
violation.
(5) Open circuit The TEC element to has a too high resistance or is not
present.
(6) No sensor A wrong temperature sensor is connected to the output
jack, or the contact is bad.
(8) Power supply error Internal power supply error.
The DEC can be read but not set. Reading does not clear the DEC.
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