HP 8712C User Manual

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Front/Rear Panel
Display
1
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The data ? status notation in the upper left corner of the display screen indicates that the analyzer source or
receiver parameters have changed since the last complete sweep.
2
The active measurement channel indicator is designated by a solid triangle l)l. The active measurement channel’s
data trace and other parameter data is indicated by being brighter than the inactive measurement channel’s data.
3
The measurement channel parameters for both channels always appear at the top of the display in this area.
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4
The type of measurement for each measurement channel is displayed here. If a measurement channel is turned off,
the display says “Off’ hare.
6 This is the display format that is selected using the I-) key.
6
This is the Scale/Oiv that is selected using the C-1 key, in units appropriate to the current measurement.
1 7 1 This is the reference level. This value is the reference line in Cartesian formats or the outer circle in polar formats.
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The reference level is selected using the (m) key.
8
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A c’ appears hare when a user-defined calibration is in use. If the frequency span has been narrowed, the
notation becomes “C?’ to indicate that interpolated error correction is on.’
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9
The message area is where you will receive messages from the analyzer from time to time. Most messages appear
only for a few moments before disappearing.
10
This area indicates whether the scale is absolute (Absj or relative iflell.
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11
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The sweep indicator appears here in the lower left corner of the display when the analyzer is sweeping at a rate
of lass than 1.5 s. At sweeptimes above 1.5 s the sweep indicator moves ecross the screen with the data trace.
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12 The reference level for the active measurement channel is indicated by a small triangle 1)) adjacent to the graticule
on the left.
13 Title and date area.
14
Active entry area: used to enter or adjust values for operating parameters.
16
Marker annotation area.
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16 1 When averaging is turned on, the average indicator appears hare.
1 If a ‘u’ lfor uncalibrated) appears here at any time, your instrumenf will not psrform accurate measurements and needs servicing. See Table 10-l
in Chapter 10 far a list of Hewlett-Packard sales and service offiies.
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HP 8712C Specifications

General

Brand	HP
Model	8712C
Category	Measuring Instruments
Language	English