Interface Fixture; Signature Codes - Cablescan 128/PC Instruction Manual

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INTERFACE FIXTURE

The interface fixture (Figure 3) has cam-operated ZIF connectors for easy exchange of adapter
cards, and rapid connection and disconnection of cable assemblies being tested. Information on
Cablescan adapter cards and configurations is provided in the Adapter Cards section. Cards are
replaced by simply lifting the ZIF levers and sliding the cards up
Adjustable
Hold-down Bar
A-01/Pin #1 (Top)

SIGNATURE CODES

The Model 128/PC is designed for the use of signature codes in achieving harness identification,
tracebility, and configuration control, as follows:
• When the first harness (usually a "known good") of a specific part number is run through
the Learn mode, the Model 128/PC calculates and displays a four-digit signature code
unique to the cable wiring configuration and the adapters used.
• If a printer is connected, that signature code are included on the wire list printout.
• Whether in hard copy (printout) form, or recorded manually, the signature code is paired
up with the part number for that harness, and kept on file for identification of future
batches.
• Every time a batch of the same part number is to be tested, a random sample of that
batch is run through Learn for self programming, and the displayed signature code must
match the signature code on file.
• Since the Model 128/PC can also store multiple wire list programs in memory, the
signature is used in identifying the wire list program when loading from memory.
• Signature codes eliminate the need to assign names to wire lists for identification.
A SIDE
Adapters
ZIF Levers
Figure 3. Interface Fixture
B SIDE
Cards
B-01/Pin #65 (Top
Model 128/PC Instruction Manual
Adjustable
Hold-down Bar