THORLABS SPDMA, Operation Manual

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Rev: 1.0, 08-Dec-2021 © 2021 Thorlabs Page 3
SPDMA 3 Operating Instructions
3 Operating Instructions
3.1 Operating Elements
3.2 Mounting
Mounting SPDMA on an Optical Table
Mount the SPDMA on an optical post by using either of the three tapped mounting holes on the
left and right side, and bottom of the device. The combi-thread tapped holes accept both 8-32
and M4 threads, such that using either imperial or metric TR posts is possible.
Mounting External Optics
The customer system can be attached and aligned using either the external SM1 thread or the
4-40 mounting holes for a
30 mm Cage System . The positions are indicated in the Operating
Elements section. The external SM1 thread accommodates Thorlabs’ SM1-threaded (1.035"-
40) adapters that are compatible with any number of Thorlabs 1'' threaded accessories, like ex-
ternal optics, filters, apertures, fiber adapters, or lens tubes. The SPDMA is shipped with an
SM1T1 SM1 coupler that adapts the external thread to an SM1 internal thread. A retaining ring
in the coupler holds the protective cover cap. Please unscrew the coupler if needed.
For accessories, please visit our website or contact Thorlabs .
3.3 Setup
After mounting the SPDMA, set up the detector as follows:
1. Power up the SPDMA using the included power supply.
2. Switch on the SPDMA, using the toggle button on the side of the instrument.
3. Push the cover from the status LED to see the status:
a. Red : The LED will initially be red upon connection to the power supply to indicate this
connection and the need to wait until the detector has reached the operating temperature.
Within a few seconds, the diode is cooled down and the status LED will turn to green. The