User's Manual

Handheld Transceiver Manual

Ⅰ. Principle

Handheld Transceiver is composed of MCU control board, RF radio and battery.

Where MCU control board processes the keyboard information, passes the

corresponding instructions to the RF radio or receives the data from the RF

module via serial port, The RF radio transmits or receives the data to/from the air.

Ⅱ.Function description：

1. Power-on/off operation:

1.1：Power-on status:

a. While power-on, the 5 LEDs of the handheld transceiver will light at the same

time for 3 seconds, and it will enter into the working status.

b. While the handheld transceiver is in the status of power-off, if the ‘

RESET’

keyboard

is pressed for more than 3 seconds, the 5 LEDs will flash two times, and it

will enter into the working status.

1.2：Power-off status：

a. While the handheld transceiver is in the working status, if no keyboard is

pressed in 20 minutes, it will enter into the power-off status.

b. While the handheld transceiver is in the working status, if the ‘

RESET’ keyboard

pressed for more than 3 seconds, then it will enter into the power-off status.

2. Setting the address code of the handheld transceiver.

The handheld remote controller has two groups of DIP switches inside (JP1, JP2).

32768 codes can be set with DIP switches.

3. Keyboard-pressed operation and status indication.

If some keyboard of the handheld transceiver is pressed, the corresponding LED

will flash one times. MCU will send out the information through RF radio and at

the same time will detect the battery voltage. If the voltage is less than 9.7V, the

5 LEDs will flash three times to indicate that it’s in low voltage and the battery

should be replaced in time. If the handheld transceiver receives the feedback

data from the control unit, the work status of the control unit will be displayed

through the status of the 5 LEDs.

4. Reading parameters of handheld transceiver.

The parameters such as address codes, channel number or work frequency can

be read with the configured software. The steps are listed below:

a. To connect the handheld transceiver to the PC with the serial cable.

b. Operate the software to read the parameters.

Ⅲ. Handheld Transceiver Technical Specifications

Frequency range: 453.325～468.000MHz

Modulation mode: FM

Channels: 16

Antenna impedance: 50Ώ

Receiving sensitivity: ≤0.25uV(12dBSINAD)

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Handheld Transceiver Manual Ⅰ. Principle Handheld Transceiver is composed of MCU control board, RF radio and battery. Where MCU control board processes the keyboard information, passes the corresponding instructions to the RF radio or receives the data from the RF module via serial port, The RF radio transmits or receives the data to/from the air. Ⅱ.Function description： 1. Power-on/off operation: 1.1：Power-on status: a.
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1st IF: 21.4MHz 2nd IF: 455KHz Audio distortion: ≤3％ Adjacent channel selectivity: ≥65dB Adjacent channel power: ≥65dB Output Power: ≤1.5W Frequency Stability: ±5ppm Channel Spacing: 25KHz Frequency deviation: ≤5KHz Spurious rejections: ≥70dB Relative humidity: 95％ RH non-condensing Ambient temperature: -20～55℃ DC Voltage range: 10V～12.8V Maximum current: ≤2A Stand-by current: ≤120mA Power-off current: ≤0.
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FCC Licensing Requirements Your radio must be properly licensed Federal Communications Commission prior to use. Your dealer can assist you in meeting these requirements. Your dealer will program each radio with your authorized frequencies, signaling codes, etc., and will be there to meet your communications needs as your system expands.