Hytera PD502, Руководство по обслуживанию, Страница: 107 / 136

UHF1(400-470MHz) Tuning Description
35
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: 4.2
±
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%.
Mandown Calibration
1. Keep the radio in a vertical position.
2. Open the Tuner software, go to “TUNE_DATA -> RX” and double click
“Mandown Calibration” from the navigation tree on the left.
3. Click the “Read” button to read the calibration data.
4. Click the “Save” button to save the calibration data.