Rohde & Schwarz R&S SMU200A, Service Manual

Page: 38 / 294

R&S SMU200A Test Procedures
1007.9845.82 1.11
E-12
Measurements in List mode Connect pulse generator as trigger source to the INSTR TRIG
connector of DUT, analyzer and oscilloscope. External triggering at
1.4 V, positive edge.
Settings on DUT:
- In the List mode, generate a list containing the two test
frequencies F1 and F2 with a level of 0 dBm each.
- Set operating mode to External Step .
Settings on spectrum analyzer:
– Set DEMOD BW to 200 kHz
– Set MEAS TIME to 1 ms
Settings on pulse generator:
- single shot
With each pulse from the pulse generator, frequency toggles from F1
to F2 and reverse.
The settling curve is displayed on the screen of the externally
triggered analyzer. Using the cursor, the time for reaching the
specified deviation can be determined.
Measurements in Fast hopp
mode Connect pulse generator as trigger source to the INSTR TRIG
connector of DUT, analyzer and oscilloscope. External triggering at
1.4 V, positive edge.
Connect FHOP generator to FHOP_CLK / DATA / STRB
connectors of DUT.
Settings on DUT:
- In the List mode, generate a list containing the two test
frequencies F1 and F2 with a level of 0 dBm each.
- Set operating mode to Fast Hopp Bus .
Settings on spectrum analyzer:
– Set DEMOD BW to 200 kHz
– Set MEAS TIME to 1 ms
Settings on pulse generator:
- single shot
Adress list elements 0 and 1 alternately with the FHOP bus. Mode
Fast Hop (FHOP_IMM_N = 1; default) must be selected, then
release a trigger pulse.
With each pulse, the frequency hops from F1 to F2 and back.
The settling curve is displayed on the screen of the externally
triggered analyzer. Using the cursor, the time for reaching the
specified deviation can be determined.
Measure the following steps in both directions, when triggering from
EOI with ALC set to ON and to OFF, S & H:
F1/MHz F2/MHz
199 201
749 751
1499 1501 without, 1540 with option -B22
2999 3001
3779 3781
4399 4401
4759 6000