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Hytera MD78X Service Manual

Hytera MD78X
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UHF2 (450
520 MHz)
Tuning Description
53
UUT TX Bit Err = 0%
Step 7 Click the Transmit Off button on Tuner to finish testing.
Receiving
Step 1 Connect the antenna connector of the radio to the RF port of Aeroflex 3920, and set Aeroflex
3920 as follows (remain default values for other parameters):
Frq: Be consistent with the frequency of the channel to be tested.
STD IB 511: .153
Lv1 (signal strength): -116 dBm (-110 dBm by default)
Step 2 Open the Tuner software and go to TEST -> RX -> Receiver BER (0.153).
Step 3 Select the channel to be tested and click the Start button on Tuner.
Step 4 Observe the Average Rate” displayed on Tuner.
You can set different Average Num (the calculation base of BER, which is 10” by default) to
obtain different Average Rate”.
Step 5 Modify the value of Lv1” parameter of Aeroflex 3920, so as to obtain the average BERs of the
tested channel under different signal strengths.
The mobile radio is operating properly when the average BER is less than 5%.
Note
When the parameter Lv1” is set to -110 dBm, the mobile radio is operating properly when
the average BER is less than 1%.
Step 6 Click the Stop” button on Tuner to finish testing.

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Hytera MD78X Specifications

General IconGeneral
BrandHytera
ModelMD78X
CategoryRadio
LanguageEnglish

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