RF Frequency
SMIQ
1125.5555.03
E-8
2.46
EXCLUDE FROM RCL
OFF
The saved frequency is also loaded when instrument settings are
loaded with the [RCL] key or with a memory sequence.
IEC/IEEE-bus command
SOUR:FREQ:RCL INCL
ON
The RF frequency is not loaded when instrument settings are
loaded, the current frequency is maintained.
IEC/IEEE-bus command
SOUR:FREQ:RCL EXCL
2.4.1 Frequency
Offset
The SMIQ offers the possibility of entering an offset (OFFSET) of possibly series-connected instruments
in the FREQUENCY menu. The indication/input value of FREQ in the header field considers this input
and represents the frequency value of the RF signal at the output of these instruments (cf. Fig. 2-17).
The entry values FREQUENCY and OFFSET in the menu FREQUENCY or FREQ in the header line are
related to the RF output frequency as follows :
FREQ - OFFSET = output frequency (= FREQUENCY).
An offset entry causes no modification of the RF output frequency but only a modification of the display
value in the FREQ field in the header line, ie FREQ in the header line indicates the offset-associated
frequency and FREQUENCY in the menu FREQUENCY the RF output frequency. The status line
indicates FREQ-OFFST.
The offset setting also remains effective with the frequency sweep.
ï ð
SMIQ
Input value
OFFSET
(FREQUENCY menu)
L.O.
RF output frequency
(FREQUENCY in the FREQUENCY menu)
Mixer
FREQ in the header field
Fig. 2-17
Example of a circuit with frequency offset
