InGaAs Biased Detector
Chapter 4: Operation
Page 8
15830-D02
4.11. Battery Replacement
Thorlabs delivers each DET with an A23 12 V battery
installed. This battery is readily available at most retail
stores, as well as through Thorlabs. The battery supplied
will deliver about 40 hours with a 1 mA load, roughly
equivalent to a continuous 1.5 mW light source at peak
wavelength. When not light is applied, the supply current
turns out to be very small and the battery hardly
degrades.
Locate the battery cap directly above the output BNC.
Unthread the cap and remove the battery. Install the new
battery into the cap, negative side in, and thread back
into the DET. Be careful not to cross thread the cap into
the housing.
CAUTION:
The DET does not include a protection diode
to prevent damage if the installation of the battery is
backwards. The battery direction is located on the
housing.
Detector
Body
A23 Battery
Positive
Negative
Cap