R&S 1129.7246.03, Руководство по эксплуатации

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Operating Manual 1302.6163.12 - 03 4.345
R&S ESU Instrument Functions
External Generator Control – Option R&S FSP-B10
EXT SRC ON /
OFF
The EXT SRC ON / OFF softkey switches the external generator on or off.
It can only be switched on successfully if the generator has been selected by means
of
SELECT GENERATOR and configured correctly by means of FREQUENCY
SWEEP . If one of these conditions is not fulfilled, an error message will be output.
Remote command:
SOUR:EXT ON
SELECT
GENERATOR
The SELECT GENERATOR softkey opens a table for selection of the generator and
definition of GPIB address and control interface.
The table permits configuration of two generators so that switching between two dif-
ferent configurations is easily possible.
The individual fields contain the following settings:
• SRC
Index of generator selected
• TYPE
The field opens the list with the available generators:
After completion of the selection, the remaining fields of the table are filled with
the generator characteristics.
A list of generator types supported by the R&S ESU is to be found in section “List
of Generator Types Supported by the R&S ESU” on page 4.347 .
When switching on the external generator by means of EXT SRC ON , the
R&S ESU switches off the internal tracking generator and starts programming the
generator settings via the GPIB interface IEC2.
Programming requires takeover of the remote control at this interface by the
R&S ESU. To avoid any access conflicts, ensure that no other controller is con-
nected to the IEC2 interface or the external generator when selecting
EXT SRC
ON .
The maximum stop frequency is limited to the maximum generator frequency. This
upper limit is automatically reduced by the set frequency offset of the generator
and a set multiplication factor.
With the external generator switched on, the FFT filters ( FILTER TYPE FFT in the
menu BW ) are not available.
If an error occurs on the GPIB when programming the external generator, the gen-
erator will automatically be switched off and the following error message will be
output:
When the external generator is switched off using EXT SRC OFF , the GPIB control
is handed over again at the IEC2 interface, i.e. a different controller will then take
over the control of the signal generator.