Transmitters 9 November 2001 95
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Tran sm it te r
Communications Connector: The communications
connector collects control information, from this closed loop
and others inside the transmitter module, and sends it
through an edge connector on the transmitter’s rear panel to
the shelf. When installed, the optional network interface card
(NIC) enables local and remote monitoring of transmitter
performance.
Thermoelectric Control Circuit: A second closed loop
circuit monitors the internal temperature of the laser,
adjusting it to maintain a constant level.
DC Power DC Power: Power enters the transmitter through the 10-pin
connector on the rear of the module.
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