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HP 5304A Operating And Service Manual page 53

Timer/counter

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Model 5304A
Maintenance
Table 9D-5-1. In-Cabinet Performance Checks
1. CHK mode and Time Interval Holdoff.
a.
Set 5300A OSC switch to INT.
b.
Mate 5300A to 5304A and ensure
ie
casting latches at rear of 5300A are
latched.
c.
Connect ac power to 5300A ac receptacle.
d.
Turn ac power "on" with 5300A SAMPLE
RATE slightly cw out of OFF.
e.
Set COM-SEP-CHK to CHK; "Function"
switch to FREQ A, AUTO.
Display
should be 10.0000 MHz +1 count.
f.
Set "Function switch to T. I. A to B,
.1 psec. Press 5300A RESET switch; the
5300A display should be about .2 psec
(200 nsec residual holdoff). It may also
be .0/jsec.
g.
Set the DELAY slightly cw out of the de-
tent position. Display should be approxi-
mately 100/jsec.
h.
Adjust the DELAY control cw until
maximum setting is reached.
Display
should be about * OOOOO. O /JS (* = OVER-
FLOW) (100,000.0 jL/sec).
i.
Repeat steps g and h for the following
ranges; display should be as listed.
T. I. A to B
Approximate 5300A Display with
DELAY control:
ccw out of Detent
max. cw
1 [j.sec
000100 p.sec
100000 jjisec
lOjosec
0000.10 MS
0100.00 MS
1 ms
00000.0 MS
00100.0 MS
1 ms
000000 MS
000100 MS
10 ms
0000.00 s
0000.10 S
2. FREQ A Mode.
RANGE: dc coupled: 0 to 10 MHz.
ac coupled: 100 Hz to 10 MHz.
Sensitivity as in Table 9D-1-1.
Obtain following test Equipment:
HP 651B Test Oscillator
HP 11048B 50-0hm Feed-Thru
Termination
Table 5-1 in the 5300A portion of the manual
and Table 9D-5-1 lists equipment
used;
equipment with equivalent characteristics
may be used.
a.
Connect 651B 50-0hm OUTPUT through
the 50-0hm
feed-thru to 5304A "A
INPUT" connector.
Set 5304A "Func-
tion" switch to FREQ A, AUTO; set
COM-SEP-CHK to SEP, ATTEN to XI,
AC-DC to AC, SLOPE to +, LEVEL to
PSET or adjusted until a stable count
is displayed.
b.
Set 65IB to frequencies and
output
levels listed below:
Display should be
as listed.
3. FREQ A Mode, Pulse Measurements.
RANGE: decoupled: 0 to 10 MHz
Sensitivity as in Table 9D-1-1.
Pulse Width: 40 nsec minimum
Obtain the following test equipment:
HP Model 222A Pulse Generator
HP Model 11048B 50-ohm Feed-
thru Termination
HP Model 180A Oscilloscope
BNC Tee Connector
a.
Connect equipment as in Figure A.
651B OUTPUT
mV rms
65IB FREQ Hz
Approximate
"Function"
(sec)
Approximate Display
+ 1 Count ± Accuracy
of source
25
10 Hz
10
00010.0 Hz
25
10 kHz
10
10000.0 Hz
25
100 kHz
1
100000 Hz
25
1 MHz
.1
1000.00 kHz
50
10 MHz
AUTO
10.0000 MHz
9D-5-16

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