Racal Instruments 1994 Service Manual page 199

Universaltimer/counters
Table of Contents

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Internal
Frequency
Standard
PVP
62
Required
test
equipment
includes
a
frequency standard
(see
Table
6.1;
Item
1).
NOTE:
If
either
Option
04
A
or
04
E ovenized frequency standard
is
installed,
allow the
counter
to
warm
up
for
one
hour (switched
to
standby,
if
required) before
performing
this
procedure.
6
63
Complete
the
following procedure:
(1)
Turn
on the
counter.
Select function
FREQ
A.
Verify that
00000000
is
displayed.
If
Option 04E
is
installed,
press the
RESOLUTION
kev
until
000000000
is
displayed.
y
(2)
Connect
the
test
equipment
as
shown
in
Fig.
6.18.
Fig.
6.18
Connections
for Internal
Frequency
Standard
PVP
(3)
Press
key sequence
(4)
Press
key sequence
Verify that
10.000000
6
is
displayed.
(5)
Press
[CONTINUE]
and key sequence
|
SHIFT
|
R-X/Z
(6)
Verify that the value displayed
is
within
the
limits
shown
in
Table
6.8.
TABLE
6.8
Internal
Frequency Standard Accuracy
(7)
Turn
off
the
counter and disconnect the
test
equipment.
6-35

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