Test Procedures R&S SMU200A
1007.9845.82 1.76
E-12
Fader and Fader Extension (R&S B14 / B15)
The equipment layout for fading includes the options R&S B13 (Baseband Main Module), R&S B10
(Baseband Generator) and R&S B14/B15. A first test is performed by internal means.
Internal Test 1, Self Test of B14 and B15:
Test equipment Not needed
Test setup -
Test method All connections, data pathes and memory inside R&S SMU and
R&S SMU are tested with PRBS data; This test requires approx. 10s per
board (20s for both R&S B14 and R&S B15).
Measurement Run remote command TEST1:FADER? . Result: OK
Internal Test 2, Connectiontest of Baseband:
Test equipment -
Test setup -
Test method The digital data path for I and Q inside the base band is tested with a
PRBS signal and a bit error rate measurement is performed.
Measurement Run remote command TEST1:BB:CONNection? . Result: OK .
External Test:
Test equipment Signal analyzer R&S FSQ including option R&S K70 (Vector Signal
Analysis) (table 1-1, pos. 24)
Test setup
Connect signal analyzer to RF output of DUT.
Test method A digital modulated Signal is generated and its error vector magnitude
and EVM is measured as a reference. Then the signal is faded with pure
doppler shift. Using frequency shift of the same amount in the opposite
direction, center frequency is put back to the displayed value. Than the
signal is measured again and compared to the reference. No
degradations may occur.
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