Installing a probe – NARDA 8718B User Manual

Page 107

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106

Operating the Meter

Installing a Probe

You may have a maximum of six probes installed in the 8718B at

any time. If you have six probes installed and want to install

another probe, you must first remove a probe. See Removing

Installed Probes.

To add a probe to the meter’s memory...

1. Click on the New Probe button. The Select Below...

dialog box will appear.

2. Select the model number of the probe you want to

install from the list of files by either double clicking on it

or highlighting it and choosing OK. Each standard

Narda 8700 series probe has a separate file that

defines its basic characteristics. The file names are

simply the model number of the probe preceded by the

letter “p”. The window will now show the model

number of the probe selected, its basic characteristics -

frequency range, full scale measurement range, field

type, and response (flat or shaped) - and the standard

calibration frequencies will be entered in the table on

the right.

3. Enter the five-digit serial number in the highlighted box

in the center of the window.

4. Enter the calibration date by highlighting the box to the

right of legend Enter Cal Date. This date is shown on

the handle of the probe. Hit the Tab key on the

computer.

5. The Calibration Due date is automatically calculated

as one year after the calibration date. Enter a different

calibration date if you are using a different calibration

cycle.

6. Enter the correction factor for each calibration

frequency of the probe by highlighting the default value

of 1.0. A default correction factor value of 1.0 (CF 1.0)

is automatically entered in the table to minimize

measurement error in case the user fails to enter a

value.

Probe Models 8782D

and 8782 are unique

low frequency elec-

tric field probes that

feature a range

switch on the probe

to cover a total of 60

dB. The 8782 series

probes must be en-

tered as two sepa-

rate probes since

there are two differ-

ent full-scale mea-

surement ranges

(dependent on the

switch on the probe

that the meter can-

not control or know

the status of) and

each range has dif-

ferent calibration

factors.

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ote

A correction factor

greater than 2.0 or

less than 0.5 will not

be accepted and will

automatically be

changed to one of

these values. Narda

probes never have a

correction factor

outside of this range

for any frequency

within their rated fre-

quency range.

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ote

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