Frequency-Converting Measurements - Rohde & Schwarz EMI Test ReceiverESCI Operating Manual

R&S ESCI

Frequency-converting Measurements

For frequency-converting measurements (e.g. on converters) the external generator is able to set a
constant frequency offset between the output frequency of the generator and the receive frequency of
the analyzer and, in addition, the generator frequency as a multiple of the analyzer.
Fig. 4-41 Test setup for frequency-converting measurements
NETWORK Menu
FREQUENCY
OFFSET
1166.6004.12
External Generator Control - Configuration
GEN
OUTPUT
The FREQUENCY OFFSET softkey activates the input of the frequency
offset between the output signal of the generator and the input frequency of
the analyzer. The value range depends on the selected generator.
The default setting is 0 Hz. Offsets <> 0 Hz are marked with the
enhancement label FRQ.
If a positive frequency offset is entered, the tracking generator generates
an output signal above the receive frequency of the "analyzer. In case of a
negative frequency offset it generates a signal below the receive frequency
of the analyzer. The output frequency of the generator is calculated as
follows:
Generator frequency = receive frequency + frequency offset
IEC/IEEE-bus command:
4.298
. . .
TEST RECEIVER 9kHz . . . 3GHz ESPI
FREQ
PRESET
MKR
7
CAL
4
SETUP
1
HCOPY
0
ESC
CANCEL
TRACE
LINES
DISP
FILE
PREV NEXT
DUT
SOUR:EXT:FREQ:OFFS 1GHZ
1142.8007.03
AMPT
SPAN BW SWEEP
MKR
MKR MEAS TRIG
FCTN
GHz
s
8 9
-dBm V
m
MHz
5 6 s
mV
dBm
kHz µ
2 3 s µ
dB
V
n
Hz
. - s
n V
dB. .
ENTER BACK
AF OUTPUT PROBEPOWER KEYBOARD
Ω Ω Ω Ω Ω Ω Ω Ω
GEN OUTPUT 50 EXT MIXER RF INPUT 50
MA
MAX 0V DC +30 dBm / 50V DC
X
MADE IN GERMANY
RF
INPUT
E-1