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Model
5315A/B
Service
8-87. Test Procedure 5, Front Pimel Switches
6·68.
To
veri
fy proper operation of the
5315A/
B front
panel
switches, perform
the following:
a.
Remove
power from
5315A/
B
by
disconnecting
line
cord.
b.
Remove
top
cover
from
5315A/
B;
verify
proper switch ing and
contin uity
of
Sl
and 52 per
schematic
diagram,
figure
8·
7,
and the followi ng. (Note that
switches
do not have
numbers engraved on them; for pin ·outs
see
following illustration.
01 120
T
YP ICAL
(8
plKtf'
02
11
0
~
_ _ _ _ _ _ _ _
~A
_ _ _ _ _ _ _ _ _ _ _ _
~
,
0 3100
O'
90
0
'
60
0
5
80
02
50
0
6
70
03
4
0
51-1
S
I
-
2
SI-3
5
1-
4
51
-
5
SI-6
51
-
1
S
I
-
8
51
-
9
(TOP
VIEW)
8-89. Test Procedure 6. Multiple Register Counter (MRC)
8·90.
To verify proper operation of
the
MRC, place the
5315A/
B in
CHECK
mode and observe
that
the
counter d
isp lays
10
MHz for all GATE
TIME
pot
settings.
8-91.
Test Procedure
7.
AC/DC
Operation (Option 002)
a.
AC OPERATION: Apply a
1
MHz signa
l
at
25 mV rms (-70
mV
p.p)
or
house standard.
to
5315A/
B
IN
PUT
A
with
a
50-ohm
feedthrough.
5et
5315A/
B for
FREQ
A
mode.
GATE
TIME pot at
midrange,
ATTN Xl position,
FILTER in
NORM.
and
minimum
sensitivity.
Verify
t hat counter counts
1
MHz
±1
count.
Verify "ohages
of
+
5V -5.2V,
+3V
per test
procedure
#1.
b.
DC OPERATION: Remove ac plug
from
instrument;
apply a
1
M
Hz signal
(house
standard
)
to
5315A
INPUT
A, with a SO-ohm
feed
through
and
set
5315A for FREQ
A mode,
GATE TIME pot at mid
range,
ATTN XlIX20
in
Xl
,
FILTER
in
NORM,
and minimum
sensitivity.
Counter
shou ld count
1
M
Hz
±
1
count. Verify
voltages
of
+
5V,
-
5.2V,
+
3V
per
test
procedure
#1.
8-1
7
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