Analysis Of N X 64 Kb/S - HP 37717C Operating Manual

Communications performance analyzer, pdh / dsn

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PDH / DSn Testing With The HP 37717C

Analysis of N X 64 kb/s

Options Required Structured PDH UKJ (USA) or UKN (USE)

Application

Many customer premises receive subrate signals for example 128 Kb/s or 384 kb/s.

The timeslots which make up these services may or may not be contiguous. Testing

these services requires that the test set to be able to insert a pattern across the

required timeslots.

Testing N X 64 kb/s channels structured within a 2 Mb/s signal can be carried out on

an End to End basis using two test sets.

Default (Known State) Settings

It can be advisable to set the HP 37717C to a known state prior to setting up to make

a measurement. This clears all previous settings and provides a clearly deﬁned

instrument state. For a list of Default Settings and the procedure for accessing them

see Stored Settings in the Mainframe Operating Manual.

Test Setup Procedure (N X 64 kb/s Analysis)

This setup procedure is interfaced at 2 Mb/s, with a test signal of 6 X 64 kb/s non-

contiguous timeslots. A PRBS test pattern is transmitted across the 6 timeslots. A

BER measurement is performed on the received test pattern.

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