Agilent Technologies 4294A Instruction Manual download pdf (Page 192)

184 Chapter 7

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

[Scale] -(more 1/2) key to display the Scale Reference menu,

and then press the

SCALE FOR [ ] key to select the target trace type. Similarly, to specify

whether to apply the marker feature to the data or memory trace, press the

[Marker] key,

and then press the

MKRON[] key to select the target trace type.

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

[Display] key to display the Display menu.

Step 2. Press the OFFSET key. The Parameter Setting field in the upper left area of the screen

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.

• Enter the desired value with the numeric keys (

[0] to [9] and [.]) and then press one of

the unit keys (

[G/n], [M/m], [k/m], or [´1]).

• Turn the rotary knob (m

m) until the desired value is set.

• Press the step keys ([][¯]) to set the desired 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:

[Marker ®] - MKR ®

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.

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