Rohde & Schwarz SMU200A - Page 76

Test Procedures R&S SMU200A
1007.9845.82 1.50
E-12
Aliasing Filter Bandwidth
Test equipment - Power meter (Table 1-2, item 8)
- Signal generator (Table 1-1, item 5)
Test setup
 Connect the I output of the DUT to the power meter,
and connect RF-output of the signal generator to the I input of
the
DU
T
.
Measurement
 Settings on DUT
:
RF
O
ff
I
/Q Settings menu:
Source Internal Bas
eband
S
tate On
BB In Settings menu:
State On
Mode analog input
Crest Factor 3 dB
Peak Level 0 dBfs
 Setting on signal generator
:
L
evel 4 dBm (corresponding to 0.5 V
p-p
)
Frequency 100 kHz
I/Q Settings menu:
State O
ff
 S
ettings on RF power meter:
high resolution.
 Make a reference measurement by connecting the RF output of
the
s
ignal generator directly to the input of the power meter
.
 R
econnect the output of the signal generator to the I- input of
the
D
UT and the I-output of the DUT to the input of the power meter
.
 R
epeat the procedure for 1.1 MHz, 5.1 MHz, 10.1 MHz, 15.1 MHz,
20.1 MHz, 25.1 MHz and 30.1 MHz. The difference of the tw
o
m
easured levels at each frequency gives the frequency response of
the DUT baseband section on the I-Channel. The frequency respons
e
s
hould be within the specified roll-off.
 Repeat the measurement for the Q- inputs and outputs of the signal
generator