3-75
Performance Tests
SDH/SONET Receiver Equalization
SDH/SONET Receiver Equalization
Specifications
Description
The Receiver Equalization is checked by looping the transmitter output
to receiver input through a special Cable Simulator. This device is
designed to simulate the specified cable loss at the rate under test. A
BER measurement is run and a check made for no errors in the results
page.
Equipment Required
Procedure
STM-0/STS-1
1 Recall the HP 37718A/19A Default Settings as shown on page 3-4 and
set the display as shown on the
following page.
Rate Equalization
STM-0/STS-1 - 51.84 Mb/s 12dB for root f cable at 1/2 bit rate
STM-1/STS-3 - 155.52 Mb/s 12dB for root f cable at 1/2 bit rate
Cable Simulator STM-0/STS-1 50 metres of 8120-0049
Cable Simulator STM-1/STS-3 75 metres of 8120-0049
OTHER
SETTINGS CONTROL
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