Table of Contents
Advertisement
Table
6-3.
Binary
Controlled
Comparator-Based
System
Troubleshooting
(Cont'd)
g)
If system does not move to correct destination:
ACTION
Verify presence of
measurement and
reference signals
with oscilloscope
(These signals are
square waves.)
f)
If
reference
or
measurement
LED
indicators
on
the
107648
Fast
Pulse
Converter
do
not
all
light
when
power
is
applied.
LOCATION
107648 front edge.
Measurement 1 :
pins 18, 20
Measurement 2 :
pins 14, 16
Reference :
pins 22, 24
ACTION
Measurement or ref-
erence present :
troubleshoot 107648
Measurement absent :
Troubleshoot res-
pective receiver and
cabling
Reference absent :
troubleshoot laser
head and cabling.
CHECK
1. Compatibility of DAC
with output signal from
10762A.
2. Software for proper con-
version of data word con-
taining tolerance and
destination.
3.
Destination address
is
being
loaded on 10762A card.
LOCATION
DAC
Software
Check output of destination
register on 10762A card.
Data is in binary form and
is negative-true. It can be
checked with a TTL level
logic probe. (See following
example.)
Advertisement
Table of Contents
Troubleshooting
