Operating Instruction; Operating Elements; Mounting - THORLABS PDA8A2 Abbreviated Operation Manual

3 Operating Instruction

3.1 Operating Elements

The PDA8A2 comes with a SM1T1 SM1 coupler which holds a SM1RR retaining ring and a
protective plastic cover cap.

3.2 Mounting

Prior to mounting the PDA8A2, please follow the instructions given in the chapter
tion .
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Housing
The PDA8A2 is housed in a rugged, shielded, 70.9 mm x 49.9 mm x 22.5 mm aluminum en-
closure. The electrical connectors and the ON/OFF slider are located on the side walls of the
housing for easy access and to minimize the thickness of the PDA8A2 so it can fit into tight
spaces.
Mounting PDA8A2 on an optical table
Mount the PDA8A2 on an optical post by using either of the two tapped mounting holes on the
side and bottom. 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 PDA8A2 housing allows to mount external optics, filters, apertures or fiber adapters.
The PDA8A2 comes 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.
The PDA8A2 housing accommodates Thorlabs' SM05-threaded (0.535"-40) series and SM1-
threaded (1.035"-40) series adapters that are compatible with any number of Thorlabs 1" and
½" threaded accessories. This also allows convenient mounting of lens tubes or cage systems.
For accessories, please visit our website or contact
© 2022 Thorlabs GmbH
Thorlabs .
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3 Operating Instruction
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