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45
Complete
the following procedure:
(1)
Connect
the
test
equipment
as
shown
in
Fig.
6.9B.
Fig.
6.9B
Connections
for
Input
A
Sensitivity
PVP
(n)
(2)
Set, in turn,
the audio generator
output
to
the frequencies
shown
in
Table
6.5B.
Set the counter's resolution
to
the
corresponding
values.
TABLE
6.5B
Input
A
Sensitivity
(n)
Frequency
Counter Resolution
Signal
Level
5
kHz
3
Digits
20
mV
10
Hz
3
Digits
20
mV
(3)
For each selected frequency,
determine
the
minimum
input level
to
the
counter that provides
stable
counting.
Verify
that these
minimum
levels
do
not
exceed
those
shown
in
the
table.
(4)
Disconnect the
test
equipment.
Input
B
Sensitivity
PVP
46
Required
equipment
includes
a digital
multimeter,
signal
generator, audio generator,
and
BNC
T~Connector
(see
Table
6.1;
Items
3, 4, 5,
and
7).
47
Complete
the
following procedure:
(1)
Select 50
ohms
for Input B.
(2)
Connect
the
test
equipment
as
shown
in
Fig.
6.10A. Verify
that the
EXT STD
LED
lights.
6-27
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