Opweb.de

1. Overview ... 1 1.1. Scope ... 1 1.2. Safety Precaution ... 1 2. External Views and Key Features ... 2 2.1 Front Panel ... 2 2.2 LCD Display ... 3 2.3 Rear Panel ... 4 2.4 Microphone (Handheld) ... 4 3. Circuit Description ... 6 3.1 Overview ... 6 3.2 Frequency Composition of Circuit ... 6 3.3 RX Principle ... 7 3.4 TX Principle ... 8 3.5 Principle of Frequency Synthesizer ... 9 3.6 Audio Processing Circuit ... 10 3.7 Power Supply ... 10 3.8 MCU Unit ... 11 3.9 Semiconductor Description ... 13 4. Feature Description and Parameter Settings ... 19 4.1 TOT(time-out-timer) ... 19 4.2 Channel Scan ... 19 4.2.1. Carrier Control Scan ... 19 4.2.2. Scan Revert Channel ... 20 4.3 Kill and Unkill ... 20 4.4 Emergency ... 20 4.5 Feature and Parameter Settings ... 21 5. Assembling and Disassembling ... 22 5.1 Exploded View ... 22 5.2 Maintenance and Disassembling Description ... 24 5.2.1. RF-PCB Disassembling Description ... 24 5.2.2. Key-PCB Disassembling Description ... 26 6. Test and Modulation ... 27 6.1 Test and Modulation Method ... 27 6.1.1. Parts Required for Modulation ... 27 6.1.2. Manual Modulation ... 27 6.1.3. Modulation by Computer ... 28 6.2 Radio Test ... 29 7. Major Technical Performance and Specifications ... 30 7.1 General Specifications ... 30 7.2 RX Specification ... 30 7.3 TX Specification ... 31 8. Service and Test Equipment ... 32 9. Troubleshooting ... 32 Appendix 1 Acronyms ... 34 Appendix2 Material List˄Electrics136-174MHz˅ ... 35 Appendix 3 Material Specification(Electronical Parts 400-470) ... 55 Appendix 4 Material Specification (Stucture) ... 74 Figure 1 FM540-01Mainboard Schematic Diagram(136-174MHz) ... 79 Figure 2 FM540-01 Top Layer Position Diagram(136-174MHz) ... 86 Figure 3 FM540-01Bottom Layer Position Diagram(136-174MHz) ... 87 Figure 4 FM540-02 Mainboard Schematic Diagram(400-470MHz) ... 88 Figure 5 FM540-02 Mainboard Top Layer Position Diagram˄400-470MHz˅ ... 95 Figure 6 FM540-02 Mainboard Bottom Layer Position Diagram˄400-470MHz˅ ... 96 Figure 7 FM540 KEY Board Schematic Diagram ... 97 Figure 8 FM540KEYTop Layer Position Diagram ... 98 Figure 9 FM540KEY Bottom Layer Position Diagram ... 99

Unpacking and Checking ... 1 Preparation ... 3 Mobile Radio Installation ... 3 Attaching the DC Power Cable ... 4 Attaching the Antenna ... 6 Attaching the Accessories ... 7 Product Overview ... 8 Front Panel ... 8 ICON ... 10 Rear Panel ... 11 Microphone(Hand-held) ... 12 Basic Operation ... 14 Switch Power ... 14 Adjusting the Volume ... 14 Selecting a Channel ... 14 Making a call ... 14 Receiving ... 15 Menu Operation ... 16 Digital Mode Menu ... 16 Analog Mode Menu ... 22 Time Out Timer ... 23 Emergency Alarm ... 23 Voice Encryption ... 25 Troubleshooting ... 26