Hytera PD502, Руководство по обслуживанию, Страница: 42 / 136

VHF (136-174 MHz) Tuning Description
36
8.2.2
Test a Radio
After tuning the radio, it is required to test the digital RF signal.
Transmitting
Step 1 Open the Tuner software and go to “TEST -> TX”, and double click “Transmit BER (0.153)” from
the navigation tree on the left to open Transmit BER (0.153) interface.
Step 2 Select the channel to be tested and select “High Power” in the “Parameter”.
Step 3 Set the Aeroflex 3920 as follows:

Freq: Be consistent with the frequency to be tested.

STD IB 511(153)
Step 4 Click the “Transmit On” button.
Step 5 View all items on the Aeroflex 3920.

Frequency Error
≤
100 Hz

Transmit Power: 4.7
±
0.3 W

FSK Error
≤
5%

Magnitude Error
≤
1%
Receiving
Step 1 Open the Tuner software and go to “TEST -> RX”, and double click “Receiver BER (0.153)”
from the navigation tree on the left to open Receiver BER (0.153) interface.
Step 2 Select the frequency to be tested.
Step 3
Set the Aeroflex 3920 as follows:

Freq: Be consistent with the frequency to be tested.

STD IB 511(.153)

Lvl: -116.0 dBm
Step 4
Click the “Start” button.
Step 5 The average error rate is less than or equal to 5%.
Receive Oscillator
Voltage
1. Connect the antenna connector of the radio with HP8921, and set
HP8921 to RX test mode.
2. Open the Tuner software, go to “TUNE_DATA -> RX” and double click
“Receive Oscillator Voltage” from the navigation tree on the left.
3. Click the “Save” button to save the existing value to the radio.