Subtracting An Offset Value - Agilent Technologies 4294A Operating Manual

Setting Up the Display of Measurement Results
Trace-based Comparison and Calculation
on the measurement screen indicates a simplified expression of the calculation. For more
information, refer to "17. Instrument Status Area" on page 57.
You can use the scaling and marker features with the memory trace in the same ways as
you can with the data trace. To specify whether to apply the scaling feature to the data or
memory trace, press the
and then press the
whether to apply the marker feature to the data or memory trace, press the
and then press the
When you want to compare three or more traces, you can use the trace superimpose
feature. For more information, refer to "Superimposing Multiple Traces" on page 185.

Subtracting an Offset Value

You can specify an offset value to be subtracted from the measurement data, and the result
of this operation is displayed by the data trace.
Step 1. Press the
Step 2. Press the
indicates the offset value currently in effect (the offset value defaults to zero in the preset
state).
Step 3. Use the keys or rotary knob of the ENTRY block in one of the following ways to specify
the offset value.
•
•
•
NOTE Alternatively, when you have the main marker displayed on the trace, you can set the offset
to the value at the marker position through the keystroke sequence:
OFFSET
To disable this feature, enter zero as the offset value.
When the result of subtracting an offset value is displayed by the data trace, the Instrument
Status field on the measurement screen indicates "–O."
If you specify an offset value, the data trace displays the result of subtracting the offset
value from the specific type of data that corresponds to the display option you selected in
step 9 of "Identifying Differences between Data and Memory Traces through Comparison
or Calculation" on page 179.
You cannot set an offset value if your measurement parameter is COMPLEX Z-Y.
184
[Scale]
SCALE FOR [ ]
MKR ON [ ]
key to display the Display menu.
[Display]
key. The Parameter Setting field in the upper left area of the screen
OFFSET
Enter the desired value with the numeric keys (
the unit keys ( ,
[G/n] [M/m]
Turn the rotary knob ( ) until the desired value is set.
m m m m
Press the step keys ([­][¯]) to set the desired value.
.
- ( ) key to display the Scale Reference menu,
more 1/2
key to select the target trace type. Similarly, to specify
key to select the target trace type.
to
[0]
, , or ).
[k/m] [´1]
[Marker]
and ) and then press one of
[9] [.]
-
[Marker ®] MKR ®
Chapter 7
key,