Users Manual Part 1

NOTICE:
If the prompt does not show, wait for the BR to reboot automatically in less than 30 s.
Contact your local Motorola Solutions representative or Technical Support to obtain the
password.
3 At the prompt, type: freq -orxch1 and record the result.
4 Optional: If you need to change the TX or RX frequencies, enter the following commands:
freq -otx_all -f<X>
freq -orx_all -f<X>
where <X> is the frequency you want to set.
Step example: To set the receive frequency to 401.0125 MHz, type freq -orx_all -
f401.0125 .
5 Type sge -orx_all -son and press ENTER to enable system gain alignment.
6 At the prompt, type: ptm -orx_all -mTCH_72 -s15 -tMulti_Frame_Trigger -d0
For Stabilock 4031/4032, use single slot only and delay : -6
ptm -orx_all -mTCH_72 -s8 –tFrame_Trigger -d-6
NOTICE: It may be necessary to adjust the trigger delay set by changing the -d
parameter and running the ppr command in step 9. The Sync Location should be around
1000.
7 At the prompt, type: enable -orxch1 -dbr1 -son.
This command enables the receiver branch under test and should enable
br1, br2, or br3
respectively depending on the branches that you are testing.
8 Set the signal generator to generate a T1 signal and inject to the relevant antenna port.
9 Type
ppr -orxch1 -a1000 –r1 to analyze the received RF signal quality of the Base Radio.
Record the results.
Step example:
Receiver Number = 1 2 3
SGC Attenuation (dB) = 0 0 0
Sync. Location (1/10 us) = 1058 1058 1058
Sync. Amplitude (dB) = -81 -81 -81
Total Bits/Msgs = 86400 86400 86400
Bits/Msgs in Error = 2186 2214 2251
BER/MER (%) = 2.530092 2.562500 2.605324
RSSI (dBm) = -118 -118 -119
10 Type ppr –orxch1 –a1 –r200 to check for small peaks of interference. Record the results.
11 Repeat step 9 through step 10 for all receiver branches.
12 Disconnect the equipment.
13 Repeat procedure for all remaining Base Radios.
6.5.4.3.3
Verifying and Tuning the Receiver RSSI Levels
The RSSI level affects the sensitivity of the interference alarm.
Prerequisites:
Set up the equipment for receiver verification and tuning. Perform Setting Up the Equipment for
Receiver Verification on page 265.
Contact your local Motorola Solutions representative or Technical Support to obtain required password.
6802800U74-AP
Chapter 6: Configuration and Testing
266