Teradyne Z1800 Series, Руководство оператора

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Z1800-Series Operator’s Guide
Probing Tied Pins Individually After the initial pass, if Tracer Second-Pass is enabled in
the header, Digital Tracer prompts you to probe the tied pins a second time, separately, to
determine if the trace between them is broken.
A message window appears, instructing you which pins to probe.
"Tracer -
Pin Check Utility
Please probe pin <n>
<ID> - <NAME>"
Important: <n>is replaced with component data.
Select Start to continue to the next pin. Select Cancel to report leads that were not
contacted on the initial pass and pins not contacted in the second pass.
Important: During the second pass, contact is accepted when you lift the Nodefinder probe from the
pin.
Analyzing Printer Messages If the printer is enabled in the Setup/Data menu, Digital
Tracer prints a message similar to the following, when it detects an open.
Analyzing Printout
of Test Results The test program can be set up to send test results to the printer. Typically, the printout
states the date and test time. The printout can list the node numbers of open connections,
shorts, and component failures, as well as tester-related problems, such as faulty voltage on
the device under test (DUT) and poor node contact. The printout may also indicate boards
which have passed the test, or tests which have been terminated by pressing Cancel. The
printout becomes the DUT failure tag.
Important:
The Z1866 requires two printers: one for System A’s results, the other for System B’s
results.
Below are examples of component, APC, Section Abort, and Shorts Locator messages.
Component Failure
Message The following are examples of component failure messages.
Note:
Digital capability is not available on the Z1805.
C
ontinuity failures
Cont. Cont. Cont.
15 to 31 Failed
32 to 40 Failed
54 to 62 Failed
Inductor failure
L1 1.mH 1 millihenry
2.0 mH
NODE 33, 53 PIN: 1
Tracer scan open on pins <number> <number> node <number>
Test COMPLETED – FAILED!