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Performance Tests
Performance Test
III. Attenuation Repeatability Test
Use the same equipment, test setup and instrument settings as used
for the Attenuation Accuracy test (see the appropriate Total
Insertion Loss Test Setup 2).
1. Set the Agilent 8156A attenuation to 1 dB and press D
ISP→REF
on the power meter.
2. Set the Agilent 8156A attenuation to any other value (e.g.
0.00 dB), wait until it settles at this value (The time taken to
change depends on the size of the attenuation factor change, and
is in the range 20 to 400ms (typical value is 200ms)). Then
change the attenuation back to the previous value. Note the
deviation (dB) in the Test Record and check that it is within
±0.01 dB.
3. Repeat steps 1 and 2 for the following attenuation settings:
0.00dB REFERENCE
1 dB 2 dB 3 dB 4 dB
5 dB 6 dB 7 dB 8 dB
9 dB 10 dB 11 dB 12 dB
13 dB 14 dB 24 dB 34 dB
44 dB 54 dB 60 dB
Specifications Agilent 8156A
Repeatability after any parameter has been changed and reset <
±0.01 dB.
5 dB 12 dB 24 dB 36 dB
48 dB 53 dB 60 dB
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