Chapter 2 395
Performance Verification Tests
54. Comms Frequency Response (Option BAC or BAH)
Cable, Type-N, 183-cm (72-in)
Cable, APC 3.5
Termination, 50 Ω, BNC (m)
Procedure
Part 1: Source/Splitter Characterization
NOTE On analyzers equipped with the optional preamplifier, Option 1DS, this
characterization will be performed twice. The first characterization,
which will be performed on all analyzers, will be performed without the
20 dB fixed attenuator connected. The second characterization, which
will be performed only on analyzers with Option 1DS, will be performed
with the 20 dB fixed attenuator connected.
1. Connect the Agilent 8482A to Channel A of the power meter. This
will be the “reference” sensor. Connect the other Agilent 8482A to
Channel B of the power meter. This will be the “buried” sensor. Refer
to Figure 2-74.
Figure 2-74 Source/Splitter Characterization Setup
2. Zero and calibrate both power sensors.
3. On the power meter, set the Channel A calibration factor to the
calibration factor of the reference sensor for 50 MHz.
4. On the power meter, set the Channel B calibration factor to 100%.
Do not change this calibration factor during this test.
5. Connect the equipment as shown in Figure 2-74. Do not use the 20
dB fixed attenuator unless frequency response with the Preamp On