User's Manual

ITC2100-NA Operation and Service Manual Version 1.0
© SWISSPHONE Wireless AG
Page 65 of 129
6.6.2 System
6.6.2.1 RSSI Calibration
This page is subdivided into the sections Field strength measurement, RSSI calibration and
Input RSSI. The current field strength can be measured in section Field strength measure-
ment. Click on the Measurement button to activate measurement, and the current RSSI
value is displayed after a few seconds. The receiver must be correctly calibrated in order for
the ITC to display the correct RSSI values. This can be done in section RSSI calibration.
First use a radio test set to generate -100 dBm and supply this to the receiver. Then click
on the Calibrate button and the ADC
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value is calculated and entered. Then follow the same
procedure with -60 dBm and the second value is entered. The receiver is now calibrated
correctly. However, since no radio test set is generally available in the field, these two ADC
values can be read off on the rear panel of the receiver and entered in section Input RSSI.
Fig. 6-32: RSSI calibration
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ADC = analog-digital conversion