DP990/DP995service manual
6.2.Tuning (PC Mode)
6.2.1. Frequency Bands
350 ~ 400 MHz
400 ~ 480 MHz
136 ~ 174 MHz
6.2.2. VCO
Set the radio to Rx state.
a. Make the channel work at a high frequency, and check whether the voltage at TP101 is <=3.9V.
b. Make the channel work at a low frequency, and check whether the voltage at TP101 is ＞0.4V.
Set the radio to Tx state.
a. Make the channel work at a high frequency, and check whether the voltage at TP101 is <=3.9V.
b. Make the channel work at a low frequency, and check whether the voltage at TP101 is ＞0.4V.
6.2.3. Tx
Tx Frequency
In PC mode, go to [Frequency Stability] and adjust the Tx frequency to a value rated frequency ±40Hz.
Power
a. In PC mode, go to [High Tx Frequency] (F1~F8) and adjust the high Tx power to 3.8~4.5W.
To Next Page
Loading...
Need help?
General
