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STOP/AF Frequency Display
DESCRIPTION
This display shows, in megahertz, either the Stop frequency or the AF frequency span of the HP
8340B/41B.
PANEL LAYOUT
STOP
A F
■HH FREQUENCY MHz
Wmmam
ED
FUNCTIONS
One of two frequencies is shown in this display:
Stop, or AF. Figure 3-7 explains the implementation
of these two functions.
This display can be blanked (turned off) by pressing
[SHIFT] [CONT].
Although the display is blanked
the Stop or AF values can be changed by the same local and remote procedures that are used when
the display is active. Press
[SHIFT] [CONT]
again to turn the display on.
INDICATORS
STOP, AF: These two amber annunciators indicate which function value is shown in the display.
DIAGNOSTICS
Press and hold
[INSTR PRESET]
to light the two annunciators, then release
[INSTR PRESET]
and
press
[SHIFT] [FREE RUN]
which will light every LED segment (
"8888888888888
"). Press
[INSTR
PRESET]
or cycle the POWER switch to end this diagnostic routine. (This diagnostic also tests the
three other displays.)
NOTE:
[INSTR PRESET]
will restore the instrument to its standard starting condition. Cycling the
POWER switch will restore the instrument to its previous state.
Figure 3-5.
Stop/AF Frequency Display
3-16
Operating Information
HP 8340B/41B
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