User's Manual
Table Of Contents
- 4. - ST-3118 RF DESCRIPTION
- 4.1. Circuit Configuration
- 4.2. Receiver System
- 4.2.1. Front-end RF Receiver
- 4.2.2. ANALOG Audio Processing
- 4.2.3. Virtual Squelch Circuit
- 4.2.4. Virtual VOLUME CONTROL
- 4.2.5. Sub audio signaling
- 4.2.6. ANALOG AUDIBLE SIGNALING
- 4.2.7. DIGITAL AUDIO PROCESSING
- 4.3. Transmitter System
- 4.3.1. ANALOG TX SIGNAL
- 4.3.2. DIGITAL TX AUDIO:
- 4.3.3. Drive and Final Amplifier Stages
- 4.3.4. Automatic Transmit Power Control
- 5. ST-3118 ALIGNMENT
- 5.1. Introduction
- 5.2. ALIGNMENT:
- 5.3. Required Test Equipment
- 5.4. Alignment Procedure
- 5.4.1. GENERAL ALIGNMENT CONSIDERATIONS:
- 5.5. MAIN RADIO ALIGNMENT
- 5.6. TRANSMITTER ALIGNMENT:
- 5.6.1. Main Clock alignment:
- 5.6.2. Transmit Power alignment:
- 5.6.2.1. High POWER LEVEL ALIGNMENT
- 5.6.2.2. Mid POWER LEVEL ALIGNMENT
- 5.6.2.3. LOW POWER LEVEL ALIGNMENT
- 5.6.3. ANALOG MAXIMUM DEVIATION
- 5.6.4. Modulation Gain alignment:
- 5.6.5. FDMA DATA MODULATION alignment:
- 5.6.6. TDMA DATA MODULATION alignment:
- 5.6.7. EIA tones Level Alignment:
- 5.6.8. DTMF signaling level alignment:
- 5.6.9. DCS signaling alignment:
- 5.6.10. CTCSS signaling alignment
- 5.6.11. FSK signaling alignment:
- 5.7. RECEIVER ALIGNMENT
- 5.7.1. DISCRIMINATOR GAIN
- 6. COMPLIMENTARY USER ALIGNMENT
- 6.1. OPTION ALIGNMENT:
- 6.1.1. ANALOG Microphone gain:
- 6.1.2. ANALOG External Mic Gain:
- 6.1.3. Analog AGC
- 6.1.4. DIGITAL AGC
- 6.1.5. MINIMUM VOLUME LEVEL:
- 6.1.6. SQUELCH LEVEL:
- 6.1.7. DISABLE RF POWER
- 7. RADIO APPEARANCE ALIGNMENT
- 7.1. DISPLAYS AND LEDS:
- 7.1.1. Auto backlight delay alignment:
- 7.1.2. Power on Text:
- 7.1.3. Leds:
- 7.2. Tones
- 7.3. ANNUNCIATION
ST-3118C SM R 1.1 SMARTRUNK SYSTEMS, INC.
4
9. ST-3118 FRONT BOARD SCHEMATIC ............................................................................................... 33
10. COMPONENT LOCATOR .................................................................................................................. 34
10.1. ST-3118C COMPONENT LOCATOR (TOP LAYER) ......................................................................... 34
10.2. ST-3118C COMPONENT LOCATOR (BOTTOM LAYER) ................................................................. 35
10.3. ST-3118C FRONT BOARD COMPONENT LOCATOR (TOP LAYER) ................................................ 36
10.4. ST-3118C FRONT BOARD COMPONENT LOCATOR (BOTTOM LAYER) ........................................ 37
11. ST-3118C PCB LAYOUT .................................................................................................................... 38
11.1. ST-3118C MAIN BOARD PCB TOP LAYER ..................................................................................... 38
11.2. ST-3118C MAIN BOARD PCB BOTTOM LAYER ............................................................................. 39
11.3. ST-3118C MAIN BOARD PCB GROUND LAYER ............................................................................ 40
11.4. ST-3118C MAIN BOARD PCB POWER LAYER ............................................................................... 41
11.5. ST-3118C FRONT BOARD PCB TOP LAYER ................................................................................... 42
11.6. ST-3118C FRONT BOARD PCB TOP LAYER ................................................................................... 43
12. ST-3118C BOM ................................................................................................................................ 44
12.1. ST-3118C MAIN PCB BOM ........................................................................................................... 44
12.2. ST-3118C FRONT PCB BOM ......................................................................................................... 52
12.3. ST-3118C MIC CONNECTOR PCB BOM ........................................................................................ 53
12.4. ST-3118C FRONT PANEL ASSEMBLY BOM ................................................................................... 53
12.5. ST-3118C MECHANICAL BOM ..................................................................................................... 54
12.6. ST-3118C PACKING BOM ............................................................................................................. 55
13. EXTERNAL CONNECTIONS ............................................................................................................... 56
13.1. ACCESSORY PORT: ....................................................................................................................... 56
13.2. USB: USB 2.0 compliance ............................................................................................................ 57
13.3. External Speaker, (3.5mm) .......................................................................................................... 57
14. List of Figures: ................................................................................................................................. 58