Protecting The Laser; Figure 15: Gx2-Hsg*Rear-Panel Rf Connections - Motorola GX2 EA1000C Series User Manual

Installation and Setup
Upon receipt of an acceptable RF input signal level, the GX2-EA1000C*/* front panel
LED illuminates green.
STATUS
With RF input signals applied to the GX2-EA1000C*/*, you can monitor the broadcast RF
input level using
of the GX2-HSG*
RF TP is -20 dB down from the Broadcast input and -26 dB down from the Narrowcast
input.

Protecting the Laser

The GX2-EA1000C*/* microprocessor and RF circuitry act to protect the laser diode if
any of the following are detected:
•
The GX2-EA1000C*/* optical output is turned off. If you turn the optical output off,
the RF drive level to the laser diode is also turned off and the RF attenuator is set to
maximum attenuation to protect the laser from damage. When the GX2-EA1000C*/*
optical output is turned on, the RF drive level is restored to the previously set RF
level.
•
The GX2-EA1000C*/* laser TEC temperature acceptable operating range is not
achieved. If the microprocessor determines that the TEC temperature is not set
properly, it disables the laser. A TEC temperature alarm is sent to the network
management system to inform the user that the TEC temperature is not operating in
the specified range.
GX2 EA1000C*/* Multi-Wavelength DWDM 1550 nm Laser Transmitter • User Guide
589569-001-a

Figure 15: GX2-HSG*rear-panel RF connections

on the front panel without removing the RF signal from the rear
1
RF TP
.
B
27