Models 2051 & 2053
Operation • 7
Using the Photoreceiver
1. Mount the photoreceiver.
Use the 8-32 thread
(M4 for metric versions) on the bottom of the cas-
ing to mount the photoreceiver to a post or pedes-
tal.
2. Supply power.
Power the Model 205X using
either two 9-volt alkaline batteries or a
±
15-V low-
noise linear power supply (such as the New Focus
Model 0901).
3. Connect the receiver output.
Connect your
voltmeter, oscilloscope, or other instrument to the
Output
SMA connector on the receiver.
If you wish to connect to a BNC cable, you can purchase a
BNC-to-SMA adapter such as the New Focus Model
1225.
4. Turn on the photoreceiver power.
For external
power, use
±15 VDC ON
; for battery, use
Batt Mode
ON
.
5. Align the optical beam onto the detector.
The photodiode is not very large, so take care
when aligning the beam.
6. Adjust the gain.
Use the knob and rocker switch
on the receiver to set the gain. The bandwidths
vary with the gain setting (see table on page 10).
7. Adjust the filters.
Select low-pass and high-pass
corner frequencies using the knobs on the receiver.
8. Turn off the photoreceiver power.
When you
are finished with the receiver, place the power
switch in the
±15 VDC ON
position and switch off
or unplug the external power supply.
Checking the Batteries
The Model 205X can be powered by two standard 9-
volt alkaline batteries. Under normal operating
Note:
Note:
205x 10MHz Adj Rcvr revA.fm Page 7 Monday, January 10, 2005 9:29 AM
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