Service manual
Model 5304A
Maintenance
TIME INTERVAL
A TO B
Mode,
.1
(isec position.
Equipment connections:
shown
in
Figure 9D-5-4A.
Connect equipment
as
Control Settings: 5300/5304A.
ATTEN (both channels)
to XI.
AC-DC (both channels)
to DC.
SLOPE (both channels)
to +.
LEVEL.
Set
Channel
A
LEVEL slightly positive
(+)
until
the "C"
lamp comes
on. Set
Channel
B
LEVEL
cw
until
a
stable 5300 display
is
obtained.
Function
to .1
fosec.
COM/SEP/CHK
to SEP.
Oscilloscope:
VOLTS/CM
to 2
(both channels).
DISPLAY
to A + B.
INPUT (both channels)
to DC.
TIME/CM
to 1
}j^ec.
SWEEP MODE
to
NORM.
TRIGGER
to INT.
SLOPE
to +.
Coupling
to ACF or AC.
No. 1 HP
222A:
REP
RATE
to
1K-10K with adjustment centered.
PULSE DELAY
has no
effect.
PULSE WIDTH
to .05 .5.
Vernier adjusted
for
oscilloscope display
of. 1
fisec.
PULSE POLARITY
to +.
PULSE AMPLITUDE
for a +2 V
pulse
on
oscilloscope.
No. 2 HP
222A:
REP
RATE
to
MAN/EXT
+.
PULSE WIDTH
to
.05-.5. Vernier adjusted
for
oscilloscope display
of .1
fisec.
PULSE POLARITY
to +.
PULSE AMPLITUDE
for a +2 V
pulse
on
oscilloscope.
PULSE DELAY
for
approximate display,
on
oscilloscope
and
5300A,
of 10
fj.sec (5300 display
should
be
approximately 00010.0(is
C).
From
the
set-up outlined
in
Figure 9D-5-4A,
dis-
connect
the
Channel
A
input
to the HP 180A
Oscil-
loscope. Connect
a 10:1
divider probe
and
check
for the
waveforms listed.
Test points using
an HP
10525A I»gic Probe
H =
High (lamp
on)
L = Low
(lamp
off)
TPl H
(dim). Flash rate decreases when DELAY
control
is
turned
cw or
when SAMPLE RATE
is
turned
cw.
TP2 H
(dim). Flash rate decreases when DELAY
control
is
turned
cw or
when SAMPLE RATE
is
turned
cw.
TP3 H
(dim). Flash rate decreases when DELAY
control
is
turned
cw or
when SAMPLE RATE
turned
cw
Figure 9D-5-4A. Time Interval Mode Troubleshooting Set-Up
INPUT
soft
FEEOTHRU
50 A
FEEOTHRU
BNC TEE
BNC TEE
No 2
OELAYED
PULSE
BNC TEE
INPUT
PULSE
OUTPUT
PULSE
OUTPUT
EXT
TRIG
INPUT
HP
5300A
HP
5304A
I80IA
HPISOA
182 lA
9D-5-8