Keysight Technologies M9403A, User'S And Service Manual

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M9403A and M9404A M9403A and M9404A Operational Check Procedure
M9403A and M9404A Operational Check Procedure
The operational check measures the signal paths from the RF Input of the M9403A module to
the RF Output of the M9404A module. The following procedure verifies that the connectors and
circuitry are operating correctly.
CAUTION Do not exceed the damage power level. Refer to Table 2 on page 4 .
Equipment Required
To demonstrate that the module works properly requires external equipment with operating
frequency range of 10 MHz to 26.5 or 50 GHz. This includes a network analyzer, or optionally, a
signal source and power meter or spectrum analyzer. 
Equipment Test Configuration Option I (Network Analyzer)
1. Adjust the Network Analyzer Stimulus Power for the M9403A-H02 to -30 dBm, or -10 dBm
for the M9403A-H01.
2. Set the Frequency Sweep from 10 MHz to 26.5 or 50 GHz depending on Options F26 or F50.
3. Perform a 2-Port Network Analyzer calibration (normalization response is adequate).
4. Connect the Stimulus Source (Network Analyzer Port 1) to the M9403A Access Port.
5. Connect Port 2 of the Network Analyzer to the M9404A Access Port.
NOTE Depending on your instrument’s power handling capability it may be necessary to
use a 20 dB attenuator to protect the instrument.
6. Connect optical ports between M9403A and M9404A with an optical cable.
7. Measure the Return Loss (S11 and S22) and Link loss (S21). Compare it to the typical
performance in Table 2 on page 4 .
NOTE On the M9403A or M9404A Option H02 you should expect to see a 30 dB
improvement over the Link Loss. Return Loss may be different as well.
Table 5 Hardware Test Configuration
Hard ware Description
Option I Network Analyzer
Option II Signal Source and Power Meter
Option III Signal Source and Spectrum Analyzer