Cirris Signature 1000HN, Руководство пользователя

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Section 9: Cable Documentation and Signatures / How signatures work
1000HN User’s Guide / page 39
J3, and J4 indicate the adapter position. The number after the hyphen is the specific
pin to which a connection is made.
J.
Our example shows that a total of 50 cables has been tested. Forty of these tested as
good. Six cables tested as having intermittent errors, and four tested simply as bad.
This breakdown of good and bad cables appears on the documentation because the
analyzer’s
Count All Cables
option was set to
ON
. When this option is set to
OFF
,
the printout shows only the number of cables which tested as good.
K
. This blank area is for writing in the date of the test.
L.
This is a section left open for writing in any additional notes. You may wish to
include a drawing of the cable here.
M.
This shows the EPROM revision number your analyzer is equipped with.
How signatures work Signatures are the working basis of the 1000HN system. When the 1000HN learns a
Sample Cable (a cable that you know is built correctly), it computes and displays a
cable signature for that Sample Cable. This signature becomes part of your cable doc-
umentation for that kind of cable.
• When the signature prompted by the analyzer matches the signature in
your cable documentation, you know that your test setup is correct.
• When the signature of a cable you are testing matches the documented
signature during a test, you know the cable under test is correctly built.
Types of signatures The 1000HN uses three types of signatures:
1. The cable signature.
2. The parameter signature.
3. The connector adapter signature(s).
The cable signature
The first six characters in a signature (as displayed by the 1000HN) are called the
cable signature. This six-character alphanumeric number represents a summary of the
interconnections in a cable. When the analyzer learns a cable, it computes this unique
signature based on the cable’s interconnections, and the connector adapters in use.
The parameter signature
When the 1000HN displays a signature, it first displays the six-digit cable signature,
then a hyphen. The five-digit alphanumeric number that follows the hyphen is the
parameter signature. It represents the voltage and resistance settings you have
selected.
Note : If you select the same voltage and resistance settings for two different
kinds of cables, both kinds will have the same parameter signature, but different cable
signatures.
The connector adapter signature(s)
The connector adapters you use to connect your cables to the 1000HN have unique,
six-character connector adapter signatures. Each kind of adapter has its own adapter
signature. These signatures help you verify that your test setups are correctly done.