Holland Electronics NE 1100 - Manual (Page 23)

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NE1100A2 CATV Optical Receiver Operation Manual
8.0 Operating Procedures
The normal operating procedures and for the NE1100 outdoor optical receiver are as the
follows:
1) Connect the AC input voltage cable and apply the AC input voltage.
The red POWER LED Indicates that the AC power is on.
2) Check Optical input power status
The green OPTICAL LED indicates sufficient optical input power of at least -3dBm (the
minimum input threshold level required for the receiver to work properly).
3) Check Pilot Signal status
The green PILOT LED Indicates that the pilot signal input power is present at or above
the minimum threshold level required for the receiver to work properly.
4) Check AGC – (automatic gain control) mode
The yellow AGC ON LED indicates that the gain control mode is properly set to AGC.
a) The gain control mode (AGC or MGC) can be selected using position #1 of the 8-pin
piano key switch (see sect. 4.3 and appendixes A&B).
b) The gain control circuit of the receiver is preset to the optimum state at the factory.
Only a skilled RF technician trained in the use of a spectrum analyzer and field
strength signal meter should attempt to adjust the gain of AGC/MGC.
5) Check RPT ON
The green RPT ON LED indicates that the optional RPT (return path transmitter)
module is installed and working properly
6) Check RPT Alarm
The green RPT Alarm LED indicates a malfunction in the optional RPT module.