HP 5501A Operating And Service Manual page 247

Table
6-4.
English/Metric Pulse Output Electronics System Troubleshooting (Cont'd)
I
TEST A: 10763 OUTPUT COUNT CHECK
In this test, the deadpath switches should be changed one at a time and the output counts compared
with those given in the table. A "start" pulse must be sent each time
a
deadpath switch is set and the
counter must be reset before the pulse is sent.
Check for the following:
10763 jumpered a s per table 6-4c
000.0 dialed in 10756 thumbwheels
deadpath switches numbered a s shown :
l=set (UP)
0
7 8 9 10
1 1
12 13
Table 6-4e: 10763A Pulse Output Check
I
' ( a l l switches down)
DEADPATH
SWITCH
S E T (UP)
(Only
Switch
Set)
-
*
0
1
2
3
4
5
6
I
A-QUAD-0 OUTPUT COUNT CHECK
Jumper 10763 for A-Quad-6 output pulses. The number of counts detected by the frequency counter
can then be multiplied by four to obtain the total number of representative A-Quad-6 output counts.
ENGLISH UNITS
1.6MHz output 800kHz output
175
f
10 260
f
10
5280
f
15 10460
f
10
10372
f
15 20655
k
15
20577 k 15 41045 f 40
40980 f 15 81860
t
50
81790 f 20 163455 f 50
163340
t
150 326725
t
50
326360 f 300 653185
f
100
METRIC UNITS
(inch jumper removed)
1.6MHz output 800kHz output
440
k
10
655
+
15
13395 k 20
26536 f 40
26350
2
10
52465 f 40
52267
+
20
104280
+
50
104090
+
50 207850
+
70
207740 f 50
415180 t 100
414953
+.
70 829300
t
500
829620
+
120