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R150
R
149
0
0
o
o
R
1
92
R193
MODULE
Fig
6.5
Location of
R150
and
R193
33
Complete
the following procedure:
(1)
Turn on
the counter.
Select
50
ohms
for
Input
B and
function
FREQ
A.
(2)
Press
key sequence
H
0
1
SHIFT
1
[STORE)
[sf|
|SfflFT[
[SF
(3)
Press
the
RESOLUTION
}
key
five
times
until
000
is
displayed,
(4)
Connect
the
test
equipment
as
shown
in Fig. 6.6.
SIGNAL
GENERATOR
10
MHz
STD
OUT
EXT STD
INPUT
COUNTER
RF
?
ABC
O
O
0
Fig
6.6
Connections
for
Input
B
System Adjustment
(5)
Set the
signal
generator output
to
100
MHz
at
a
level of 3.0
mV
r.m.s.
(6)
Verify that the
EXT STD LED
(front panel)
is lit,
and
that
INPUT
B
TRIG
LED
is
flashing.
(7)
Adjust
R193
to
obtain the
most
stable display of 100.0
E
6
±0.1
E
6,
with
the
GATE LED
flashing.
6-22
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