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Performance Tests
54
Repeatability Test
Use the same equipment and test set up as used in
Turn the instruments on and allow the devices to warm up (20..30 min).
1
Make sure that all your connectors are clean and undamaged.
2
Set the attenuator and the power meter to the actual wavelength of the
3
laser source.
Disable the laser source, zero the power meter and select Autorange.
4
Display [dB].
Enable the laser source and open the shutter.
5
Set the attenuation [a] to 1 dB, wait until it settles and set Display to
6
Reference on the power meter.
Set the attenuation [a] to any other value (e.g. 21 dB) and wait until it
7
settles at this value.
Change the attenuation [a] back to the previous value and note the
8
deviation in the Test Record.
Repeat step 3 to step 5 for the following attenuation settings:
9
7 dB
40 dB
Power Setting Repeatability Test
Use te same equipment and test setup as used in
without the Agilent 81634B Power Meter. The performance test can be
performed at other wavelengths than 1550 nm.
Turn the instruments on and allow the devices to warm up (20..30 min).
1
Make sure that all your connectors are clean and undamaged.
2
Set the attenuator to the actual wavelength of the laser source and set
3
the averaging time to 1 sec.
Zero the attenuator power meter, disable the power control and Display
4
[dBm].
Enable the laser source and open the shutter.
5
Set [P
] to 0 dBm and wait for it to stabalize. Note the reading of
6
SET
[P
] in the Test Record.
ACT
Set [P
] to any other value and wait for it to settle.
7
SET
Change [P
] back to the previous value and note the deviation of
8
SET
[P
] in the Test Record.
ACT
Repeat step 6 to step 8 for [P
9
Agilent 81570A, 71A, 76A, 77A & 78A Variable Optical Attenuators, Eigth Edition
15 dB
24 dB
48 dB
54 dB
] = -25 dBm and [P
SET
Performance Test Procedure
Figure
10.
32 dB
60 dB
Figure 10
on page 53
] = -50 dBm.
SET
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