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From: phil@amdcad.UUCP (Phil Ngai)
Newsgroups: net.dcom
Subject: bit error rate tester recommendation wanted
Message-ID: <6313@amdcad.UUCP>
Date: Thu, 14-Nov-85 22:27:32 EST
Article-I.D.: amdcad.6313
Posted: Thu Nov 14 22:27:32 1985
Date-Received: Fri, 15-Nov-85 20:26:19 EST
Organization: AMDCAD, Sunnyvale, CA
Lines: 23
Keywords: 56Kb

I am going to buy a bit error rate tester and would like recommendations
on what to get. I intend to use it mainly to verify our 56Kb DDS lines
and any subchannel or tail circuits which may be associated with it.

The best unit I have found is the HP 4925B. It accepts external clock
up to 72Kb and can generate clock at speeds up to and including 19200.
This latter capability is important for testing tail circuits connected
to DDS as DDS normally provides the clock.

This unit performs bit error testing, block error testing, error seconds,
and percentage error free second testing simultaneously. It can talk
RS232 or V.35.

So far, I haven't seen anything else with all these features, particularly
in a hand held unit. Are there any other testers I should look at? Is
there anything wrong with the 4925B? Any comments will be appreciated.
-- 
 The California Lottery may be a tax on the stupid, but at least
 some of the proceeds are used for education.

 Phil Ngai +1 408 749-5720
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