User's Manual

Part Number: J24004

Drawing Control: JD16049

OUTPUT POWER

After all of the amplification and filtering is completed, a sample of the signal is measured and the output power is

predicted. This information is fed back to the Digital section and a Power Control voltage is generated and fed to the

input section attenuators to reduce the power if needed. This comprises the power control loop. Its response is slow

compared to the CDMA closed loop power control, so it will not interfere with the system.

The output power of both RF links is set at the factory to be nominally +23 dBm. As the input signal increases to a

level which, when added to the gain produces an output power larger than the set point, the power control loop takes

over to reduce the gain accordingly. This insures that under all input signal conditions below the maximum input

signal level (-35 dBm), that the integrity of the CDMA spectrum be maintained.

CHANNEL AND ATTENUATION PROGRAMMING

Programming of the 48660 is accomplished either by DIP Switch Programming of the unit, or remotely via a

computer (See Remote Programming Manual TBD). This section addresses the DIP Switch Programming of the

Channel and Attenuator Settings.

The DIP Switches (S1) are on the Digital Board located just inside the shroud. They can be accessed by opening the

shroud and with a pointed instrument such as a pencil or pen, can be set to certain values to set the frequency

(Channel Number) and the Attenuation Settings for the Down Link and Up Link, see Figure XX. Care should be

taken when closing the 48660 Intelli BDA shroud to disengage the latching mechanism located at the back of the

shroud. Forcing the shroud closed will damage the shroud.

Load Button

DIP Switches

Front Panel

Figure X.X Location of DIP Switch

A7 MSB

A0 LSB

SW2

Not Drawn to Scale