Blanking The Display - Agilent Technologies 8753ET User Manual

Making Measurements
Using Display Functions
MEMORY
Display
This is the only memory display mode where you can change the smoothing and gating of the memory
trace.
2. To view both the memory trace and the current measurement data trace, press:
Display DATA and MEMORY
To Divide Measurement Data by the Memory Trace
You can use this feature for ratio comparison of two traces, for example, measurements of gain or
attenuation.
1. You must have already stored a data trace to the active channel memory, as described in
Trace to the Display Memory" on page
2. Press
DATA/MEM
Display
The analyzer normalizes the data to the memory, and shows the results.
To Subtract the Memory Trace from the Measurement Data Trace
You can use this feature for storing a measured vector error, for example, directivity. Then, you can later
subtract it from the device measurement.
1. You must have already stored a data trace to the active channel memory, as described in
Trace to the Display Memory" on page
2. Press
Display DATA-MEM
The analyzer performs a vector subtraction on the complex data.
To Ratio Measurements in Channel 1 and 2
You may want to use this feature when making amplifier measurements to produce a trace that represents
gain compression. For example, with the channels uncoupled, you can increase the power for channel 2
while channel 1 remains unchanged. This will allow you to observe the gain compression on channel 2.
1. Press
Sweep Setup
2. Make sure that both channels must have the same number of points.
3. Press
MORE
Display
channel 2 data array. This ratio is applied to the complex data.
4. Refer to "Measuring Gain Compression" on page 1-58
point.

Blanking the Display

Pressing
Display ADJUST DISPLAY
leaving the instrument in its current measurement state. This feature may be helpful in prolonging the life of
the LCD in applications where the analyzer is left unattended (such as in an automated test system). Turning
the front panel knob or pressing any front panel key will restore normal display operation.
Pressing
FREQUENCY BLANK
Display
1-20
1-19.
to divide the data by the memory.
1-19.
to subtract the memory from the measurement data.
COUPLED CH OFF
D2/D1 TO D2 ON
BLANK DISPLAY
will blank the displayed frequency notation for security
to uncouple the channels.
to ratio channels 1 and 2, and put the results in the
for the procedure to identify the 1 dB compression
switches off the analyzer display while
"To Save a Data
"To Save a Data