Specifications

Excalibur Multirate DAP Installation and Operation
6-36
5. Use the 1, 2, and < buttons to enter the desired length of the test
(1 - 999 seconds). When the desired number is displayed, press the 3 button to
start the test. The screen then displays an error counter and the time remaining in
the test. If you want to abort a test while it is in progress, press the 1 button. If
you wish to insert an error into the test pattern, press the 2 button. (This verifies
that the error detector is working properly.) To reset the error counter back to 0,
press the 3 button.
1 23 4
Escape Top
L
S e l f E r r T i m e r = 0 6

s
I n c D e c A c c p t
L
S e l f E r r 0 , T = 5 9 s
C l e a r I n s r t R e s e t
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Switched 56 Dial Line Tests
When the DAP is in Switched 56 dial backup operation, you can initiate the following
tests and loops provided in the Diagnostics submenu. Chapter 7 provides descriptions
and instructions for initiating these tests.
Note: When the DAP is in dial backup operation and the DTE data rate is 56 Kbps,
tests and loops requiring communication with a remote unit (End-to-End Error Test,
Loop 2 Test, and Loop 2 Error Test) are not provided.
• End-to-End Error - can be run on the entire aggregate bandwidth (Aggregate
End-to-End Error Test), through an individual port (Port End-to-End Error Test),
or through a channel's lowest numbered port (Channel End-to-End Error Test). ).
During dial backup operation with a DAP equipped with ISDN IDBU, this test
can only be initiated from the unit equipped with ISDN IDBU.
• Digital Loop - can be run through an individual port (Port Digital Loop Test), or
through a channel's lowest numbered port (Channel Digital Loop Test).
• V.54 Digital Loop - can be run through an individual port (Port V.54 Digital
Loop Test), or through a channel's lowest numbered port (Channel V.54 Digital
Loop Test).
• Loop 2 - can be run through an individual port (Port Loop 2 Test), or through a
channel's lowest numbered port (Channel Loop 2 Test).
• Loop 2 Error- can be run through an individual port (Port Loop 2 Error Test), or
through a channel's lowest numbered port (Channel Loop 2 Error Test).