R&S FSMR, Operating Manual

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Configuration/Setup R&S FSMR
1166.3363.12 4.19-2 E-2
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The TRANSDUCER softkey opens a submenu for entering the correction characteristics for
transducers.
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The GENERAL SETUP softkey opens a submenu for all the general settings such as IEC/IEEE-bus
address, date and time as well as the configuration of the device interfaces. FIRMWARE OPTIONS
can be installed under this menu item.
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The SYSTEM INFO softkey opens a submenu for displaying the hardware configuration of the
instrument, the switching cycle statistics and system messages.
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The SERVICE softkey opens a submenu in which special device functions and system information
can be selected for servicing. The password required for service functions can be entered in this
submenu.
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The IF SHIFT softkey opens a submenu to activate or deactivate 1st IF shifting.
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The RECEIVER PRESET softkey sets the receiver mode as preset mode.
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The ANALYZER PRESET softkey sets the analyzer mode as preset mode.
External Reference
The R&S FSMR can use the internal reference source or an external reference source as frequency
standard from which all internal oscillators are derived. A 10 MHz crystal oscillator is used as internal
reference source. In the default setting (internal reference), this frequency is available as output signal
at rear-panel connector REF OUT, e.g. to synchronize other instruments to the reference of the R&S
FSMR.
In the setting
REFERENCE EXT , the connector REF IN is used as input connector for an external
frequency standard. In this case all internal oscillators of the R&S FSMR are synchronized to the
external reference frequency (also 10 MHz).
SETUP menu:
REFERENCE
INT EXT
The REFERENCE INT / EXT softkey switches between the internal and
external reference.
If the external reference is selected, also the frequency of the external
reference is adjustable between 1 MHz and 20 MHz.
The default value is 10 MHz.
These reference settings are not changed if a preset occurs to maintain the
specific setup of a test system.
If the reference signal is missing when switching to external reference, the
message "EXREF" appears after a while to indicate that there is no
synchronization.
On switching to internal reference please ensure that the external reference signal
is de-activated to avoid interactions with the internal reference signal.
IEC/IEEE-bus command:
ROSC:SOUR INT
ROSC:EXT:FREQ <numeric value>
External Noise Source
SETUP menu:
NOISE SRC
ON OFF
The NOISE SRC ON/OFF softkey switches on or off the supply voltage for an
external noise source which is connected to the NOISE SOURCE connector
on the rear panel of the instrument.
IEC/IEEE-bus command:
DIAG:SERV:NSO ON