Power Amplifier
Power
Management Unit
Selecting the Communications Port
Connecting to a Reciter Outside the Subrack
Equipment
5 Selecting the Communications Port
Procedure
Calibrating the PA bias
Calibrating the forward &
reverse detector bias voltages
Calibrating the PA power
Procedure
Output voltage calibration
Before you connect to a base station, you should first define the
communications (COM) port that you want to use.
To select the COM port
1. Select Tools > Options.
2. Select the port that you want to use from the COM Port list.
Note:
The available COM ports are detected by the program and
appear in the list.
3. Click OK.
The COM port you selected is now shown on the status bar.
Field calibration procedures require access to the tuning holes, so you need to
remove the reciter from the subrack and connect to it using a CTU.
Calibration and test unit (CTU)
An IBM compatible PC
10-30 V DC power supply
16-way cable
RS-232 cable
Connection
Equipment Required
Inside subrack
None required
Inside subrack
None required
Inside subrack
None required
Connection
Equipment Required
Inside subrack
Digital multimeter
© Tait Electronics Limited April 2006