3M
™
Advanced Systems Tester 900AST Series
14
keys to select a digit or character to change. Use
the Blue keys to enter values or characters. Use
the
and
keys to insert and delete values
and characters. Use
to accept any changes and
return. Use
to return to the Setup menu without
making changes.
Completing the Label field is optional. This is used
for reference (i.e. “tail harness”) and can contain
up to fourteen characters and digits. The label only
appears on this screen. To use one of the custom
cables in an application (RFL, TDR), select the
desired cable (Custom 1 through Custom 6) in the
wire gauge menu of the application.
Note: Velocity of Propagation (Vp) is the rate at
which electrical signals travel through a conductor.
Vp is expressed as a fraction of the speed of light,
so it is always less than 1. Meters per microsecond
(m/µs) is an alternate way to specify cable velocity
factor. Consult your aircraft wire specifications to
obtain the correct velocity factor for the conductors
that you wish to test.
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