5.5 E3 Setup and Status
E3 represents the 34.368 Mbit/s PDH layer. The Ports Setup screen gives
you access to the PDH layer setup for the transmitter and/or receiver of the
currently selected port.
E3 allows transmission of data streams that are nominally running at the same
rate, however allowing for some variation in the speed around a nominal rate
(+/-125 ppm variation around 34.368 Mbit/s).
E3 frame defined by ITU-T G.751 has 1536 bits during the period of 22.375 kHz.
12 bits are assigned to the overhead, and 4 bits parity are available as an
option.
E3 Frame Structure
The E3 interface uses the electrical BNC connectors.
MU100010A Connector Panel
5.5.1 Transmitter Setup
5.5.1.1 Physical Setup
When the transmitter is set up with only an E3 interface, selecting the Tx
button in the navigation area will launch the following screen.
For the switching method between PDH Tx and DSn Tx, refer to Physical
Setup in "E1 Setup and Status". Touch E3 radio button. Touching Off radio
button disables the transmitter.
To Next Page
Loading...
