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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.
C O M / S E P / C H K to SEP.
Oscilloscope:
VOLTS/CM to 2 (both channels).
DISPLAY to A + B.
INPUT (both channels) to DC.
T I M E / C M 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 h a s no effect.
PULSE WIDTH to .05 .5.
Vernier adjusted for
oscilloscope display o f . 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)
T P l
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
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