8
For the Newport Model 0901 power supply, use
the 0923 M8B-to-M8B cable. For other power
supplies, use the 0924 M8B-to-banana plug
power cable.
When using the M8B-to-banana plug cable, take care
to hook up the banana plugs as follows to avoid
damaging the photoreceiver: Red = +15 V, Black =
-15 V, Green = Ground.
2. Mount the photoreceiver to your optical table.
3. Connect the optical source to both optical inputs.
The FC adapter for both types of 18X7
photoreceiver will accommodate either multi-mode
or single-mode fiber.
To prevent saturation of the amplifier, keep the
difference between the input powers less than the
saturation power shown in Specifications.
The optical power must remain below the absolute
maximum power listed in Specifications. Exceeding the
maximum power may damage the photodiode and the
amplifier.
4. Individually block each photodiode input to check
and adjust the optical inputs so that the output
voltages are in the desired –2.5 to +2.5 V range
(with 50 Ω load).
Illuminate both diodes simultaneously and use the
output to fine-tune the optical power balance
between the two diodes while observing voltage
on a digital voltmeter or other low-frequency
measurement device.
