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R&S SMU200A
Test Procedures
1007.9845.82
1.49
E-12
Baseband Input (Option R&S B17)
Input Impedance (VSWR)
Test equipment
See section "
Test Assembly for Output Impedance (VSWR)"
, page
Test setup
Connect the test port to the I or Q input instead of the RF output.
Measurement
Settings on DUT:
Frequency
any
Level
any
I/Q Settings
menu:
Source
Internal Baseband
State
On
BB In Settings
menu:
State
On
Mode
analog input
Settings on signal generator:
- Level 10 dBm
- Carrier frequency 1 MHz
Screw the VSWR bridge off and measure the level as reference level.
Connect the VSWR bridge to the I input and measure the level again.
The voltage ratio of test level to reference level is the output
reflection coefficient r of the DUT.
From this, the voltage standing wave ratio (VSWR) can be calculated
as follows:
VSWR = (1+r) / (1-r)
Repeat the measurement with carrier frequencies of 5, 10, 15, 20, 25
and 30 MHz
Repeat the measurement for the Q input.
Summary of Contents for R&S SMU200A
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