User's Manual

MASTR III Repeater Calibration Procedure 5/16/2011
Raytheon JPS Communications, Inc. 2-11
8/22/2011
2.2.3.4 Go to the Configure>Rx (Automatic) window and select trigger on RSSI
value of 2000.
2.2.3.5 Hit Trigger, Calculate, and Save to calculate and store the coefficients for
Rx Scale Factor and Offset
Note: If the Rx gain is too high or low a Calibration Warning will prompt
you to change the Rx gain and repeat the operation.
2.2.3.6 Return to the Configure >TX and RX (Manual) screen and place a (-) sign
in front of the Rx Scale Factor number. The MASTR III requires a 180
degree inversion for proper synchronization of P25 frames.
2.2.4 RSSI Calibration
2.2.4.1 Sect the Configure>RSSI (Automatic) screen.
Figure 2-10 RSSI (Automatic) Screen