90 9 November 2001 Transmitters
Label Description
Key Switch Safety key switch. Turn key to activate laser.
Optical Connector Snap connector (under shield).
Front Panel
Fiber Length Adjustment Available on 810-QTX series only
Fiber Test Point 1 volt / 10 km of fiber (800 series only)
PWR LED Green LED.
LASER LED Amber LED.
RF Gain Control Adjusts the RF drive level to the laser by ± 3 dB.
Laser Bias Test Point DC test point (10 mV/mA). Measures laser bias current.
RF Test Point RF drive level monitor. (Note that readings are 20 dB down.)
Side and Rear Panels
DC Power Input 10-pin plug. Carries DC power into the transmitter.
Communications Edge connector. Connects to Diamond Transport shelf backplane.
Carries control information into and out of the transmitter module.
Main RF Input Connects to Diamond Transport shelf backplane. Allows RF signal to
enter the transmitter.
SW3 & SW2 10-position switches used to configure the transmitter for Automatic
Shutdown.
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