General Information; Safety; Parts List - THORLABS PDA20C Operation Manual

1 General Information

The PDA20C is a wideband amplified, large area InGaAs detector designed for detection of
light signals from DC to 5 MHz. A buffered output drives up to 3.5 volts into 50 W loads.
The PDA20C housing includes a removable threaded coupler that is compatible with any num-
ber of Thorlabs 1" and ½" threaded accessories. This allows convenient mounting of external
optics, light filters and apertures, as well as providing an easy mounting mechanism using the
Thorlabs cage assembly accessories. The PDA20C has three 8-32 (M4 for /M-version) tapped
mounting hole with a 0.25" mounting depth and includes a power supply.

1.1 Safety

Attention
All statements regarding safety of operation and technical data in this instruction manual will
only apply when the unit is operated correctly as it was designed for.
The PDA20C must not be operated in explosion endangered environments!
Do not open the cabinet, there are no parts serviceable by the operator inside!
Refer servicing to qualified personnel!
Only with written consent from Thorlabs GmbH may changes to single components be made or
components not supplied by Thorlabs GmbH be used.
This precision device is only serviceable if properly packed into the complete original pack-
aging. If necessary, ask for a replacement package prior to return.

1.2 Parts List

Inspect the shipping container for damage.
If the shipping container seems to be damaged, keep it until you have inspected the contents
and you have inspected the PDA20C mechanically and electrically.
Verify that you have received the following items within the package:
1. PDA20C / PDA20C/M Amplified Photodetector
2. Metal cover cap
3. LDS12B power supply (±12V, 250 mA), 100 V, 120 V or 230 V line voltage
4. Operation manual
Thorlabs offers a DC power supply cable to PDA20C, the PDA-C-72. This cable has a con-
nector on one end and open wires at the other. The pin-out of the PDA20C DC power jack is
shown in the appendix
© 2018 Thorlabs GmbH
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