Futurecom VR - Setting up the RSSI on Range

8G093X01 R5
VR Programming Guide
August 2022 Page 128 of 144
The RSSI setup screen is used to assist with the setup the following VR parameters on a per
channel basis:
• RSSI ON threshold
• Busy Lockout Threshold
• TX RSSI Threshold
• Rx RSSI Threshold
Setting up the RSSI ON range
The RSSI ON threshold defines the VR incident range since this is the minimum signal level the
VR receiver needs to detect from the Local PSU to repeat it locally and to the System.
RSSI ON threshold is normally programmed to standard -114 dBm. However, if the user wants
to test the actual levels received from a portable radio located at the desired coverage area
extreme then the ‘RSSI ON Level Test’ can be performed.
To execute the test, the following steps are to be followed:
1. PSU user is located at the edge of the desired coverage range and the PSU is switched
to the correct channel (matching the channel selected on the VR).
2. Futurecom Repeater Configurator is running on the Primary VR and RSSI Setup window.
3. Select ‘System’ or ‘Local’ Mode in the ‘Operating Mode’ Field.
4. Switch ‘Set Test Mode’ to ON.
5. Press the ‘RSSI ON Level Test’ button.
6. The PSU User will hear 3 short beeps and 1 long beep and must immediately press and
hold the PTT for 10 seconds.
7. The VR measures the received signal level and updates the RSSI ON Threshold field. The
Check box against the parameter is checked to indicate test completion.
8. Enter desired Margin (min 6dB or higher recommended).
9. Repeat the test for all required channels.
10. Close the RSSI Setup window or proceed with the Voting algorithm tests as described
below.
11. Review the ‘RSSI ON Threshold’ levels on the ‘Repeater Channel setup’ screen and save
to the VR and in a DPD or DCD file as required.