Operation Model
8901B
The function of MODULATION OUTPUT/AUDIO INPUT connector
is
controlled
by
the AUDIO
INPUT key. The connector
has
an
input impedance of approximately
100
k0.
--
AUOIO FILTERS
AN0 GAIN AUOIO
CONTROL COUNTER COUNTER OISPLAY
I
Audio
Fkequency
Block
Diagram
COMMENTS
Relative Measurements
If
audio frequency
is
to
be displayed relative
to
a
reference, enter the value
as a
ratio reference using
the Ratio function. (Refer
to
Ratio
on page
3-215.)
Finer Resolution
for
Frequencies from
100
to
250
kHz
Special Function
32.1
enables a resolution of
0.1
Hz for frequencies
100
to
250
kHz. For
dB
measurements, this special function enables
a
resolution of
0.001
dB
instead of the normally displayed
resolution of
0.01
dB.
The selection of Special bction
32.0
or
32.1
is
maintained through instrument
power down.
32.0
Audio frequency
is
displayed with the normal resolution of
1
Hz
for frequencies from
100
to
32.1
Audio frequency
is
displayed with a resolution of
0.1
Hz for frequencies from
100
to
250
kHz.
32.2
Displays
0
if
the
normal
measurement resolution
is
enabled
(32.0
SPCL) and displays
1
if
a finer
250
kHz.
resolution
is
enabled
(32.1
SPCL).
This special function is not available with firmware
date
codes
234.1985
and
below. (To display the firmware
date
code, select
42.0
SPCL.)
To
order a
ROM
set
that
contains this special function, contact the nearest
HP
sales ofice.
3-200
Audio Frequency
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