Agilent Technologies X Series Manual page 412

Input/Output
This function takes control of and uses Trace 1. Any data in this trace prior to
NOTE
activating Image Suppress will be lost.
Key Path
Example
Notes
Initial S/W Revision
Image Shift
Like the Image Suppress mode, Image Shift is a two sweep sequence. The data from the first sweep is
placed in Trace 1 and the data from the second (LO frequency shifted by 2*IF/N) sweep is placed in
Trace 2. Signal responses of Trace 1 and Trace 2 that have the same horizontal position are considered to
be in the current band and therefore can be analyzed with the amplitude and frequency measurement
systems of the SA. All other responses are invalid and should be ignored.
This function takes control of and uses Trace 1 and Trace 2. Any data in these
NOTE
traces prior to activating Image Shift will be lost.
Key Path
Example
Notes
Couplings
Initial S/W Revision
Cable IF Loss
The loss at the IF in the IF/LO cable can be compensated for with this function, by entering the loss in
dB for your cable.
The cable loss will depend on the IF frequency. The IF frequency varies depending on which IF path
your measurement is using. For best accuracy, characterize your cable's loss for the IF frequency or
frequencies you will be using.
IF Frequencies:
10 MHz path: 322.5 MHz
25 MHz path: 322.5 MHz
412
Input/Output, External Mixer, Signal ID Mode
:SID:MODE ISUP
In Image Suppress Mode, synchronization is ensured by first turning off
Signal ID, initiating a single sweep, then turning on Signal ID followed by
two single sweeps.
A.08.01
Input/Output, External Mixer, Signal ID Mode
:SID:MODE ISH
To synchronize in Image Shift Mode, turn off Signal ID and then initiate a
single sweep. Then turn on Signal ID and initiate two single sweeps. The
results of the first sweep after Signal ID is turned on are available in Trace 1.
The next sweep is shifted and the data from that sweep is available in Trace 2.
The unshifted and shifted data can then be compared.
Trace 2 is turned off when Image Shift is turned Off.
A.08.01