5.4 DS1/J1 Setup and Status
DS1/J1 represents the 1.544 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.
DS1/J1 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 1.544 Mbit/s).
The DS1/J1 frame has one frame-bit and 24 channels during 125 μs. A channel
contains eight bits, so one DS1/J1 frame has 193 bits. The bits of channel 0 is
used for multe frame.
DS1/J1 Frame structure
The DS1/J1 interface uses the electrical Bantam connectors.
MU100010A Connector Panel
5.4.1 Transmitter Setup
5.4.1.1 Physical Setup
When the transmitter is set up with only a DS1/J1 interface, touching 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". Touching Off radio button disables the
transmitter.
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