LDTC-LAB datasheet(26/31 Pages) WAVELENGTH

26 / 31 page

ERROR

POTENTIAL CAUSES

SOLUTION

Laser disabled due to TEC output state.

LD output is linked to TEC output state or

TC current is not enabled

Unlink the Laser output from the TC (See

LASer:ENABle:OUTOFF) or enable TC

current.

Laser disabled due to shorted TEC.

TEC load connection is either open or

shorted.

Unlink the Laser output from TC (see

LASer:ENABle:OUTOFF) or see TEC load

short/open solution above.

Laser disabled due to open TEC.

Laser disabled because temperature is not

stable.

Poor thermal contact or operating outside

ideal range of sensor.

Unlink the Laser output from TC (see

LASer:ENABle:OUTOFF)

see

troubleshooting section above.

Laser disabled due to shorted temperature

sensor.

Temperature sensor connections are

shorted together.

Unlink the Laser output from TC (see

LASer:ENABle:OUTOFF) or check sensor

wiring.

Laser disabled due to open temperature

sensor.

No temperature sensor is present.

Unlink the Laser output from TC (see

LASer:ENABle:OUTOFF) or check sensor

wiring.

Laser disabled because temperature is

above max limit.

Thermal runaway. The TEC cannot pump

heat to the heatsink fast enough.

Unlink the Laser output from TC (see

LASer:ENABle:OUTOFF) or use larger

TEC or larger heatsink or increase the limit

if safe.

Laser disabled because temperature is

below min limit.

Minimum limit is too high.

Unlink the Laser output from TC (see

LASer:ENABle:OUTOFF) or if safe,

increase the minimum limit.

To reach initial temperature, system may

overshoot.

Run IntelliTune in System Response mode

or reduce current limit.

Laser load open.

No laser is present.

Ensure the laser is properly wired.

Laser load short.

Laser connections are shorted together.

Ensure the laser is properly wired.

Non-uniform TEI step.

Non-uniform TE I step was measured.

Restart IntelliTune.

IntelliTune response timeout.

System response is very slow.

Put sensor closer to TEC. See Technical

Note TN-TC01 Optimizing Thermoelectric

Temperature Control Systems.

Error calculating PID terms.

IntelliTune data is corrupt.

Re-run IntelliTune.

Not allowed while TEC output is on.

Changing certain settings require the TEC

output to be disabled.

Disable TEC output before step.

THE FOLLOWING ERRORS REQUIRE WAVELENGTH TECHNICAL SUPPORT

• +5V power failure. Please contact the factory.

• Laser load power supply failure. Please contact the factory.

• Laser control power supply failure. Please contact the factory.

• TEC load power supply failure. Please contact the factory.

• TEC control power supply failure. Please contact the factory.

• Hardware error. Please contact the factory.

• Power failure. Please contact the factory.

LDTC-LAB Datenblatt(PDF) 26 Page - Wavelength Electronics, Inc.

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