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Performance Test Procedure
Agilent 81570A, 71A, 76A, 77A & 78A Variable Optical Attenuators, Eigth Edition
Wavelength Flatness Test
(Not applicable to 81578A)
Use the same test setup as used in
Agilent 81654A Fabry Perot Laser Source with the Agilent 81689A Tunable
laser Source.
Turn the instruments on and allow the devices to warm up (20..30 min).
10
Make sure that all your connectors are clean and undamaged.
11
Connect the equipment as shown in
12
Make sure that the power meter and tunable laser source are hosted by
13
the same mainframe.
Start the PACT application by pressing the [APPL] button on the
14
mainframe and selecting PACT.
Select the modules and the sweep parameters as follows:
15
l Start = 1524.0 nm
l Stop = 1576.0 nm
Step = 0.1 nm
P
= 0.000 dBm
max
Press [Reference] and in the next screen [New Ref] and start the
16
reference measurement.
Return to the setup menu by pressing [Menu] and selecting [Setup].
17
Connect the equipment as shown in
18
Set the attenuation to 15 dB.
19
Press [Measure] to start the DUT measurement.
20
After completion press [Graph] to enter the Trace Display.
21
Use the markers C and D to mark the maximum and minimum Insertion
22
Loss peak and note the power difference D in the Test Record.
Return Loss Test
(Not applicable to 81578A)
Carry out the following Return Loss Test at 1550 nm with single mode
fibers using the equipment listed in Table 4, "Equipment Required," on
page 48. To adapt for the straight or angled contact versions of the
attenuator, use patchcords with appropriate connectors and suitable
connector interfaces.
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
Figure 10
on page 53 but replace the
Figure 10
on page 53.
Figure 9
on page 52.
Performance Tests
55
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