Справочник Пользователя для 3M 965AMS
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3M™ Dynatel™ Advanced Modular System 965AMS
System Setup
Units
2. Use the up and down arrow
keys to select the units
you want to change. Press
Change Selection
to change
the units of measure. An
“X” in a box indicates your
choice.
Distance: Feet or Meters:
This affects all distances
displayed in the 965AMS
tester.
Degrees: Fahrenheit or
Centigrade: This affects all
temperatures used in the
965AMS tester.
Filter: C-Message or CCITT: This affects the filter
used in the POTS Noise function. Use the C-Message
filter in the US and Canada. Use the CCITT (also called
“Psophometric”) filter in all other countries.
The 965AMS tester features a dBrnP filter for noise tests
in New Zealand. To set the default noise filter to dBrnP, set
Filter option to CCITT. This filter is used only in units sold
in New Zealand; for all other countries, the CCITT option
uses a dBrnOp filter. Noise test results will be displayed
as dBrnP.
TDR: Vp (Velocity Propagation) or m/µS (meters
per microsecond): This affects the TDR “velocity of
propagation.” Use “Vp” in the US and Canada. Use “m/µS”
in other countries. Press
OK
to accept any changes and
return. Use the
key to return to the Welcome Screen
without making changes.