Rev: 1.1, 22-Jun-2023 © 2023 Thorlabs
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PM103x Optical Power Meter Interfaces Chapter 4 Operating Instructions
Note
For detailed instructions on controlling the PM103x through the OPM software, please download the
OPM manual.
4.1.1.1 Connecting a Power Sensor
The PM103x supports all Thorlabs C-Series photodiode and pyroelectric sensors, that can be identified
by the red connector-housing of the DE-9 connector, compared to older versions of Thorlabs power
sensors. Sensor type and calibration data are saved in the non-volatile memory of the DE-9 connector.
Upon connection, this information is automatically sent to the PM103x and to the controlling device (PC
or else) and software. The software will automatically recognize the sensor.
To plug-in or remove a sensor, slightly press on the two bolts in the connector housing, that fix it by
tension.
Sensors can be hot-swapped to the power meter interface. After recognizing a new valid sensor, the
type and calibration data will be downloaded to the power meter interface in approximately 2 seconds
and the unit is ready to operate with the new sensor.
Note
Older Thorlabs Sensors without a DE-9 connector
The PM103x will NOT automatically recognize sensors lacking a DE-9 connector, as for the case of the 'A'
and 'B' series. Please contact Thorlabs for an upgrade of old sensors with DE-9 connectors.
Note
Custom Sensors
To use sensors without a DE-9 connector, manufactured by Thorlabs or else, the user may provide an
appropriate adapter. To build the adapter, refer to the Pin-out of the DE-9 connector shown in the
Specifications . The adapter will per default automatically be recognized by the application Optical
Power Monitor as "Photodiode adapter" or "Pyro adapter". The sensor type can then be adjusted in the
software.
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