Rohde & Schwarz SML01 - Page 200

SOURce:FREQuency R&S®SML / R&S®SMV03
1090.3123.12 E-6 6.22
[:SOURce]:FREQuency:MODE CW
| FIXed | SWEep
The command specifies the operating mode and hence also specifies which commands control
the FREQuency subsystem. The parameters are assigned as follows:
CW | FIXed CW and FIXed are synonyms. The output frequency is specified by means of
[:SOUR]:FREQ:CW | FIX.
SWEep The instrument operates in the SWEep-mode. The frequency is specified by means
of commands [:SOUR]:FREQ:STAR; STOP; CENT; SPAN; MAN.
Example: :SOUR:FREQ:MODE SWE *RST value is CW
[:SOURce]:FREQuency:OFFSet -50 to +50 GHz
The command sets the frequency offset of a mixer which might be series-connected (cf. Chapter
4, Section "Frequency Offset").
Example: :SOUR:FREQ:OFFS 100MHz *RST value is 0
[:SOURce]:FREQuency:SPAN 0...F
max
- 9 kHz (F
max
depending on the model
This command specifies the frequency range for the sweep. This parameter is coupled to the
start and stop frequency. Negative values for SPAN are permitted, then STARt > STOP is true.
The following relations hold:
STARt = CENTer - SPAN/2
STOP = CENTer + SPAN/2
Example: :SOUR:FREQ:SPAN 400MHz *RST value is (STOP - STARt)
[:SOURce]:FREQuency:STARt 9 kHz to F
max
(F
max
depending on the model)
This command defines the starting value of the frequency for the sweep operation. Parameters
STARt, STOP, SPAN and CENT are coupled to each other. STARt may be larger than STOP. (As
to specified range, cf. FREQ:CENT).
Example: :SOUR:FREQ:STAR 500MHz *RST value is 100 MHz
[:SOURce]:FREQuency:STOP 9 kHz to F
max
(F
max
depending on the model))
This command indicates the final value of the frequency for the sweep operation (see STARt as
well). (As to the specified range, cf. FREQ:CENT).
Example: :SOUR:FREQ:STOP 1GHz *RST value is 500 MHz
[:SOURce]:FREQuency:STEP
The command to enter the step width for the frequency setting if frequency values UP or DOWN
are used is under this node. This command is coupled to the Knob Step command in manual
control. Only linear step widths can be set.
[:SOURce]:FREQuency:STEP[:INCRement] 0 to1 GHz/0..2 GHz/0...3 GHz
(R&S SML01/R&S SML02/R&S SML03 + R&S SMV03)
The command sets the step width for the frequency setting.
Example: :SOUR:FREQ:STEP:INCR 1MHz *RST value is 1 MHz
[:SOURce]:FREQuency:ERANge ON | OFF
The command activates or deactivates the Extended Divider Range function.
Example: :SOUR:FREQ:ERAN ON *RST value is OFF