Aethra d2000 lite Benutzerhandbuch
ISDN TESTER AND ANALYZER D2000
PRO
/D2000Lite/D2000 USER’S MANUAL
Example of end -to-end test
• Incoming 64k all bear: the instrument waits for a call from a remote device.
As soon as a call is received, the instrument, without performing any
compatibility control of the called profile, answers automatically and starts to
generate the PRBS and measure the BER according to the pseudorandom
sequence set.
compatibility control of the called profile, answers automatically and starts to
generate the PRBS and measure the BER according to the pseudorandom
sequence set.
In ‘Incoming 64k all bear’, the test equipment can be used as an
automatic answer remote machine, which activates every kind of
incoming call an performs a BER test with generation and
measure of the PRBS sequence.
automatic answer remote machine, which activates every kind of
incoming call an performs a BER test with generation and
measure of the PRBS sequence.
Band: To select the bandwidth on which perform the test. Only BASIC ACCESS and
LEASED LINE mode.
LEASED LINE mode.
When the device is set in PRI or PRI(CRC4) it is possible to
configure, from COMMON SETUP page, the channels’
mapping on which carry out the test. The device supports BER
test in Nx64 mode.
configure, from COMMON SETUP page, the channels’
mapping on which carry out the test. The device supports BER
test in Nx64 mode.
Bit Sequence: Set the pseudo-random bit sequence to be used from the list or
define your own pattern.
define your own pattern.
Pass/Fail Test: Choose the BER value. This value is used to determine the pass or
fail test condition. Use E-7 (10-7) when no other value is requested. The G.821 value
calculates the acceptability threshold according to the performance target expected
by the G.821 recommendation. The HRX(%) parameter modifies such threshold.
fail test condition. Use E-7 (10-7) when no other value is requested. The G.821 value
calculates the acceptability threshold according to the performance target expected
by the G.821 recommendation. The HRX(%) parameter modifies such threshold.
Error Injection: Insert the number of wrong bits which the device sends on line. It is
possible to use both manual and automatic mode. In automatic mode, you need to
insert the BER value to be sent.
possible to use both manual and automatic mode. In automatic mode, you need to
insert the BER value to be sent.
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CHAPTER 3 - PERFORMING A MANUAL TEST