Logic Analyzer Performance Tests; Test Connector - HP 1652B Getting Started Manual

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Logic Analyzer
These procedures test the electrical performance of the logic analyzer by using the
Performance
specifications in section 1 as the performance standards. All tests may be
Tests
performed without access to the interior of the instrument. Results of
performance tests may be tabulated in the Performance Test Record at the end of
this section.
Test
COnneCtOt' The logic analyzer performance tests and adjustments require connecting the pulse
generator outputs to probe pod inputs. Figure 3-l is a test connector that may be
built to allow testing of multiple channels (up to eight at one time). The test
connector consists of a BNC connector and a length of wire. Connecting more
than eight channels to the test connector at a time will induce loading of the circuit
and true signal representation will degrade. Test results may not be accurate if
more than eight channels are connected to the test connector.
The Hewlet .&Packard part number for the BNC connector
in
figure
3-1
is
12504032. An equivalent part may be used in place of the H Iewlett -Packard part.
01650E38
Figure 3-l. Test Connector
For quicker connection without the use of grabbers, a test connector may be built
as shown in figure 3-2 to allow testing of multiple channels (up to eight at one
time). The test connector consists of a BNC connector and a 2-by-8 Berg
connector. The Hewlett-Packard part number for the BNC connector in figure 3-2
is 1250-1032 and the Hewlett-Packard part number for the 2-by-8 Berg connector
is 1252-1816. Equivalent parts may be used in place of the Hewlett-Packard parts.
JUMPER WIRE
GRAY
SIGNAL LEAD
> /H
Q
BLkCK
.
GROUND PROBE
)t
'BERG CONNECTOR
BNC BULKHEAD CONNECTOR
0165X 10
Figure 3-2. Test Connector Using Berg Connector
HP 16528/1653B
Service Manual
Performance Tests
3-5