>On 9/24, Grant Pinto wrote: >> Under BABT 340 (TTE dir annex 3 - PQAA), Basic Rate ISDN products must be >> 100% tested to a "Receiver Sensitivity" test at production. That test is >> described in ETSI ETS 300012, clause D.4.8.2. >> >> This test requires the use of a "Network Simulator and Test Apparatus". >> >> Can anyone recommend appropriate test equipment for this test? Since this >> is the only telecom type test that is required at production under BABT 340, >> I am looking for something more basic (and less costly) than a Siemens K1403 >> (or equiv.) that tests all physical interface (layer 1) type tests. >>
>Try a 6 dB attenuator to loop back transmit into receive. If you get >good date, that satisfies BABT. We make an E1 interface, and we meet >BABT requirements this way. Please note that we do keep the >attenuator under calibration. This is about as cheap and basic as it >gets. We do the same thing with a BRI interface to meet the BABT340 "Receiver Sensitivity" test. The test routine is built in to the power on diagnotics of the product and runs each time the units is powered with the attenuated loopback installed. Dave Clement Motorola ISG
