Frequency-Converting Measurements - R&S ESU Series Operating Manual

R&S ESU
4.11.5

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 gener-
ator and the receive frequency of the R&S ESU and, in addition, the generator fre-
quency as a multiple of the R&S ESU.
Fig. 4.36 Test setup for frequency-converting measurements
FREQUENCY
The FREQUENCY OFFSET softkey activates the input of the frequency offset
OFFSET between the output signal of the generator and the input frequency of the R&S ESU.
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:
Remote command:
Operating Manual 1302.6163.12 - 03
Generator frequency = receive frequency + frequency offset
External Generator Control – Option R&S FSP-B10
SOUR:EXT:FREQ:OFFS 1GHZ
Instrument Functions
4.343