NARDA 8718B - Manual (Page 107)

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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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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