Tektronix ST2400A, User Manual

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Functional Overview
ST2400A SDH Test Set User Manual 2-11
Front Panel Connections
155 Electrical Add Input / 2.048 Ext Ref Clock Input (BNC)
This BNC connector is mounted on front panel 155e Input of all configurations. This connector is
only used in Transceiver and Transmitter configurations.
155 Electrical Drop Output (BNC)
This BNC connector is mounted on front panel 155e Output of all configurations. This connector
is only used in Transceiver and Receiver configurations.
155/622 Optical Add Input (FC, SC, or ST)
An optical connector bulkhead plus cap and chain is mounted on front panel 155/622 Optical Input
of all configurations. Bulkhead type (FC, SC, or ST) depends on customer-specified optical
connector type (required customer option). 155/622 Add optics will be installed and fiber
connected to this bulkhead only in TX/RX and TX Only configurations.
155/622 Optical Drop Output (FC, SC, or ST)
An optical connector bulkhead (customer-specified as FC, SC, or ST) plus cap and chain is
mounted on front panel 155/622 Optical Output of all configurations. 155/622 Drop optics will be
installed and fiber connected to this bulkhead only in TX/RX and RX Only configurations.
TX 2.4 Gb/s Optical Output (FC, SC, or ST)
An optical connector bulkhead (customer-specified as FC, SC, or ST) plus cap and chain is
mounted on front panel 2.4 Gb/s Output of all configurations. No fiber is connected to this
bulkhead in RX Only configurations. Optical connector from 2.4 Gb/s TX laser(s) is attached to
this bulkhead only in TX/RX and TX Only configurations when 1 or 2 optional lasers are ordered.
RX 2.4 Gb/s Optical Input (FC, SC, or ST)
An optical connector bulkhead (customer-specified as FC, SC, or ST) plus cap and chain is
mounted on front panel 2.4 Gb/s Input of all configurations. No fiber is connected to this bulkhead
in TX Only configurations. Optical connector is fiber-connected to APD RX only in TX/RX and
RX Only configurations when optional APD RX is installed.