Rohde & Schwarz R&S SMU200A, Руководство по обслуживанию

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Test Procedures R&S SMU200A
1007.9845.82 1.40
E-12
PhiM Frequency Response
Test method
Spectrum measurement (see chapter "
Test Methodes
").
Measurement
Settings on DUT:
RF On
Level 0 dBm
Frequency Modulation menu:
Source External
PhiM deviation 1 rad.
Setting on the signal generator:
for frequencies up to 300 kHz the internal LF generator of the signal
generator is used, >300 kHz the RF output. It is recommended to
use an AC voltmeter (Item 19 of table 1-1) to control the correct
input voltage.
- LFGen Voltage 0.707 V
- State ON
- RF level 10 dBm (equivalent to 1 V peak voltage).
Settings on R&S FSQ:
see chapter "
Test Methodes
"
Vary the signal generator frequency and measure the modulation
depth.
The modulation frequency response is the difference between the
greatest and the smallest modulation depth.
Repeat the measurement with the internal modulation generator with
the setting
Source Internal.
Recommended settings
LF in logarithmic steps,
4 steps per decade (1, 1.8, 3.2, 5.6).
CF sweep
10 MHz, 250 MHz, 500 MHz, 812 MHz, 940 MHz,
1067 MHz, 1194 MHz, 1321 MHz, 1484 MHz, 2200 MHz,
4000 MHz, 6000 MHz.