Users Manual Part 1
WARNING: RF energy burn hazard or equipment damage. Before disconnecting antenna and
connecting signal generator to the antenna connector, ensure that none of the Base Radios is
currently transmitting.
Procedure:
1 Turn on the BR.
2 Enter the BR Test Application mode and log on with dev credentials. See Logging on to the Test
Application on page 242.
NOTICE: If the prompt does not show, wait for the BR to reboot automatically in less
than 30 s.
3 Reset all cal_br* values to 0 by performing the following actions:
a Enter the following command:
fcp -orxch1 -pcal_br<receiver number>-v0
b Repeat step 3 a for each branch.
Step example:
fcp -orxch1 -pcal_br1 -v0
fcp -orxch1 -pcal_br2 -v0
fcp -orxch1 -pcal_br3 -v0
4 Turn off the system gain and reset the BR. Type the following commands:
sge -orx_all –soff
reset -ocontrol
5 Display the receive frequency for the current Base Radio. At the prompt, type: freq -orxch1
and record the result.
If displayed frequency is suitable for measurement, continue with step 7.
6 Set the RX frequency. Use the freq -orx_all -f<X> command, where <X> is the receive
frequency.
Step example: To set the receive frequency to 401.0125 MHz, enter freq -orx_all -
f401.0125.
7 Configure the TETRA Signal Generator (VSG) to produce TCH/7.2 logical channel at the Base
Radio’s current RX frequency by performing the following steps:
a Connect signal generator to the antenna connector on top of the
cabinet.
b Set the RF Signal Generator to -100 dBm at the Rx input.
8 Configure the station to decode TCH/7.2 logical channel type. Type ptm -orx_all -mTCH_72
-s15 -tFrame_Trigger -d-5
9 Type enable -orxch1 -dbr1 -son to enable the receiver branch under test.
This command should enable br1, br2, or br3 respectively depending on the receive branches
that you are testing.
10 Type
sge -orx_all -soff to turn off the sys gain.
11 Measure RSSI for receive path 1, 2, and 3. Check that BER is 0%. Type ppr -orxch1 -a10
-r1
Step example:
Receiver Number = 1 2 3
SGC Attenuation = 26214 26214 26214
6802800U74-AP
Chapter 6: Configuration and Testing
267