Product Manual

© MiMOMax Wireless Ltd
Tornado Product Manual
22
6 CHANGING OPERATING FREQUENCY AND POWER CALIBRATION
6.1 INTRODUCTION
Changing operating frequencies of a MiMOMax Tornado radio is done via the CCMS. The radio’s power will need to be
recalibrated and the internal duplexers also need to be re-tuned. Duplexer tuning is covered in Section 7.
6.2 EQUIPMENT REQUIRED: POWER METER
For accurate measurement of average power from MiMOMax transmitters a thermistor bolometer type of power meter (e.g.
HP435A or similar) is required. Other types of power meter may give inaccurate average power readings when used with
MiMOMax transmitters and may be suitable only for relative power measurement.
The transmitters are accurately set up in the factory to produce 250 mW average power output. To avoid compromising
spectral purity it is very important that the power output be set no higher than this.
6.3 PROCESS OVERVIEW
The process of changing frequencies can be seen below.
Frequency change process
6.4 CCMS PROCESS
To start the process, click on ‘RF TX and Rx’. This page displays the transmitter power level, TX and Rx frequencies. It is
strongly advised to set the unit to +24dBm output power and to measure the transmit power before starting the process. This
can be used as a reference power should you not have an accurate power meter. The units were factory calibrated to +24dBm,
+/-0.2dB.