Alternate measurement display screen – NARDA 8718B User Manual

Page 21

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20

Operating the Meter

Alternate Measurement Display Screen

The Alternate Measurement Display Screen is very similar to the

Main Measurement Display Screen with one difference. This

display mode is used to show frequency-specific, real time

information on the third line of the display instead of a maximum

value. It should be used only for single frequency or narrow

band measurement applications. The information that is shown

depends on whether a flat frequency response probe or a

shaped frequency response probe has been selected.

Flat Frequency Response Probes. This display mode

instantly converts the measured value to a percent of

the referenced exposure standard at a particular

frequency.

Shaped Frequency Response Probes. This display

mode instantly converts the measured value, shown in

Percent of Standard, to an equivalent power density

value at a particular frequency.

The use of the Alternate Measurement Display Screen also

introduces an automatic correction for probe frequency

deviation for probes in memory.
The option to change display screens is only available when

other options such as spatial averaging, data logging or time

averaging have not been turned on.

To use the Alternate Measurement Display Screen...

1. Make sure that the 8718B is set to the correct exposure

standard. See Chapter 11 Using the Standards

Feature.

2. Press F4 (FREQ) from the Main Measurements Display

Screen. A new screen will appear to allow you to enter

a frequency.

3. Enter the frequency that you are measuring. You must

fill all four positions. If you make a mistake just enter

more digits until correct. For greater accuracy, use the

units that allow the larger number. For example, enter

10.00 kHz, not 00.01 MHz.

The Alternate Mea-

surement Display

Screen should only

be used for single

frequency measure-

ments or where all

emitter frequencies

are close and the ex-

posure standard has

the same limits. Re-

fer to Using Probe

Correction Factors

on page 24.

N

ote

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