Rohde & Schwarz SMU200A - Page 66

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
:
f
or 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:
s
ee chapter "
Test Methodes"
 Vary the signal generator frequency and measure the modulation
dept
h.
 The modulation frequency response is the difference between the
greatest and the smallest modulation depth.
 Repeat the measurement with the internal modulation generator wi
th
t
he setting Source Internal.
Recommended settings
 LF in logarithmic steps,
4 steps per decade (1, 1.8, 3.2, 5.6).
 CF sw
eep
10
MHz, 250 MHz, 500 MHz, 812 MHz, 940 MHz
,
1067 M
Hz, 1194 MHz, 1321 MHz, 1484 MHz, 2200 MHz
,
4000 M
Hz, 6000 MHz.