FCC ID: K6630383X20
IC: 511B-30383X20
Alignment
Vertex Standard Co.,Ltd.
3
Before Alignment
Install the HX280S Service Flag Controller Program to your computer.
Set up the test equipment as shown below, and set the DC Power Supply voltage to 8.0
V.
Execute the HX280S Service Flag Controller Program.
Select the COM port number which is connected to the HX280S Alignment Jig.
Press and hold in the [PRESET] key while turning the transceiver on to enter the
Alignment Mode.
Select “Alignment” ON of HX280S Service Flag Controller Program.
Click the left mouse button on the [SET] button of the HX280S Service Flag Controller
Program.
Main Reference Frequency Adjustment
Setup the test equipment as shown below.
Set the channel to CH16.
Use the [H/L] key to set the transceiver to “LOW” power.
With the PTT switch pressed, adjust TC1001 so that the Frequency Counter reading is
156.800 MHz ±100 Hz.
Transmit Power Adjustment
Setup the test equipment as shown below.
Set the channel to CH16.
Use the [H/L] key to set the transceiver to “HI” power.
With the PTT switch pressed, adjust VR1003 so that RF output power is 5 W ±0.1 W.
Release the PTT switch, then set the transceiver to “LOW” power by the [H/L] key.
With the PTT switch pressed, adjust VR1002 so that RF output power is 0.8 W ±0.1 W.
Release
the
PTT
switch.
TX Deviation Adjustment
Setup the test equipment as shown below.
Remove the solder jumper JP1001.
Set the AF Signal Generator output to 200 mV rms at 1 kHz.
Set the channel to CH16.
With the PTT switch pressed, adjust VR1001 so that the maximum deviation is 4.4 kHz
±0.1 kHz.
