© 2017 Thorlabs GmbH
7 Appendix
55
7 Appendix
7.1 Sensor Connector Pinning
The PM400 is capable to support custom made detectors. Please read carefully the following
instruction prior to connecting a self made sensor.
Pin-out of the 9pin DSUB
sensor connector (female)
Pin Connection
3 AGND (analog ground): photodiode ground (anode), thermal and pyro sensor
ground
4 photodiode cathode
5 pyroelectric sensor +
8 thermal sensor +
7 PRESENT: Connect this pin via a 1kΩ – 10kΩ resistor to pin 3 (AGND) to ena-
ble a custom sensor
1 +5V (max. current 100 mA from this pin)
6 DGND (digital ground)
9 n.c.
Warning
Pin 2 is uniquely used for the EEPROM Digital I/O (memory in Thorlabs sensor heads) and
MUST NOT be used. Connecting this pin may cause malfunction of the PM400.
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