User Guide

PAMS
Technical Documentation
NHB–3
Service Software Instructions
Original 26/97
Page 28
3.2.4 – RSSI Calibration
When function is activated the selected channel is checked. If none of the re-
ceiving channel numbers from 512 to 810 in PCS mode is selected then error
message is shown and the user is asked to change the channel to the valid re-
ceiving channel area.
The next automatic selections are made when this tuning function is activated:
– active unit = RX
– operation mode = continuous
The user is asked to set the level of the signal generator to the low level 75 dB
and to press <Enter> key. First measurement will be performed. Next the user
is asked to set the level of the signal generator to the high level 45 dB and to
press <Enter> key. Second measurement will be performed. If the user presses
<Esc> key to either of the questions the exit step will be performed and the pre-
vious menu is shown on the screen.
The gain code can have values between 0 and 1023 and voltage from 0.25 V to
4.25 V (voltage precision is 0.01 V). Note that the needed input signal level is
also shown.
When exit is performed, the following selections are set to the values which
they were before this adjustment.
– active unit
– operation mode