Rohde & Schwarz R&S FSP Series, Operating Manual

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Operating Manual 1164.4556.12 - 06 6.199
R&S FSP Remote Control – Description of Commands
SENSe Subsystem
6.16.11 SENSe:ROSCillator Subsystem
This subsystem controls the reference oscillator. The numeric suffix in SENSe is irrelevant for the com-
mands of this subsystem.
[SENSe<1|2>:]ROSCillator:EXTernal:FREQuency 1MHz to 20MHz
This command informs the instrument on the frequency of the external reference oscillator. This
frequency is used as starting point for the synchronization of the internal reference frequencies.
The value of the external reference frequency (1 MHz to 20 MHz) is rounded in steps of 1 Hz.
Example:
"ROSC:EXT:FREQ 5MHz"
Characteristics: *RST value: -
SCPI: conform
Mode: A
*RST is not influencing this parameter.
[SENSe<1|2>:]ROSCillator:EXTernal:PLL NORMal | WIDE
This command controls the PLL bandwidth used to synchronize with the external reference signal and
is available only with an external reference frequency of 10 MHz.
The reference settings are not changed if a preset occurs to maintain the specific setup of a test
system. The factory default is NORMal.
This function requires a synthesizer board revision with hardware code 7 or above. You can check this
information in the “HWC” column of the hardware info window (see
“HARDWARE INFO” on
page 4.186 ).
Example:
"ROSC:EXT:PLL NORM"
Characteristics: *RST value: -
SCPI: device-specific
Mode: A
[SENSe<1|2>:]ROSCillator[:INTernal]:TUNe 0 to 4095
This command defines the value for the tuning of the internal reference oscillator.
The reference oscillator should be tuned only if an error has been detected in the frequency accuracy
check. After rebooting the instrument, the factory-set reference frequency or the previously saved
reference frequency is restored.
This command is only available at service level 1.
Example:
"ROSC:TUN 128"
Characteristics: *RST value: –
SCPI: device-specific
Mode: A
NORMal Uses a PLL bandwidth of about 3 Hz
WIDE
Uses a PLL bandwidth of about 30 Hz