Transmit Adjustments, SAT Balance | Maxon Telecom SP210, SP200

Maxon SP200/210 Radio

SP200/210

11.3.3 Transmit Adjustments

The transmit mode is entered by pressing SHIFT + T on the keyboard.

Ensure that the Power Supply is set to +7.5V.

11.3.3.1 Power Adjustment

The power level is set by the potentiometers on the back plate of the radio, they are located underneath the Type Approval label. Note: A spare label is shipped with every radio.

Refer to the Service Manual for the correct procedure for setting the power levels. With the ASIC program operating, the channel can be altered by using the “F” key.

11.3.3.2 SAT Balance

Set Audio Generator to 400Hz, 300mV (20dB above nominal level). Adjust TXTRIM2/TXTRIM3 to make demodulated signal as shown in Figure 11-6.

Figure 11-6 - Modulation wave shape

11.3.3.3 Audio Deviation Limits

Use Channel 2. Turn the SAT tone off and input an audio level (1kHz) at 20dB above nominal. Check that the peak deviation is between 2.0 and 2.15kHz at 12.5kHz channel spacing or between 4.0 and 4.3kHz for 25kHz channel spacing.

TXTRIM1 can be used to adjust the audio deviation. Check at frequencies across the band.

Any other adjustments are covered earlier on in this Service Manual.

11.3.3.4 SAT Deviation

Input a SAT tone, with no MIC level. Check that the tone deviation is between 300 and 350Hz at 12.5kHz channel spacing or 650 to 700Hz tone deviation at 25kHz channel spacing.

SATRIM2 can be used to adjust the SAT deviation. Check at frequencies across the band.

11. APPENDIX A – ACC-2003 ALIGNMENT BOX -	Issue 1.0
Page 11-6	03/01

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Maxon Telecom SP210, SP200 service manual Transmit Adjustments, SAT Balance, SAT Deviation

Contents

SP200/210 NSW Australia Tel +61 0 2 9707 Issue No Effective Date Reason for Change Signature Amendment Record SheetAmendment Record Sheet Maxon SP200/210 Radio Table of Contents 10-1 SL100 UHF Parts List11.4 Default Settings 11-8 11-1 List of Tables Maxon SP200/210 Radio Issue 03/01 Amendments to this Manual Using this ManualIntroduction Category C Engineering Bulletin Contact Information Specifications General Vibration Environmental Operating Temperature RangePhysical Dimensions Synthesiser ESD EMC Accessories & Options Pre-Install Check AccessoriesOptions Accessories & Options INSTALLATION, Commissioning & Alignment INSTALLATION, Commissioning & AlignmentInstallation Connections Commissioning Recommended Test Equipment Commissioning Equipment Commissioning Kit Test Equipment Set-up using Discrete Test Equipment Discrete Test Equipment SK 3100 Service Kit Test Equipment Connection Transmitter Performance TestsReceiver Performance Tests Power Adjustment SquelchAudio Output Preparation Tests without DisassemblyAlignment VHF Disassembly and Re-assembly of the Radio Removing and Replacing BatteryRemoving and Replacing the Belt Clip Removing and Replacing the Main Assembly Location of Adjustment PointsPLL Alignment Squelch Sensitivity Transmitter AlignmentTcxo Radiocommunications Test SET Balance Adjustment Audio deviation adjustmentCtcss / DCS deviation Audio Volume Level At maximum volume, nominal distortion is 10%Receiver Alignment Common Circuits Detailed Functional DescriptionIntroduction Eeprom Audio Signal Path Audio Asic Sat Signal Path Miscellaneous Signals and Controller Audio/SAT Circuits Common RF Circuits Battery Low Indicator CircuitLEDs and indicators PLL Synthesiser Charge Pump and Loop Filter PLL ICOut-of-Lock Detector DC to DC Converter Transmitter Antenna SwitchAutomatic power control APC circuits PA module Receiver Front End Squelch Mute Circuit First MixerSecond mixer, Second IF, FM detector 16kHz Band Pass Filter Noise detector circuit AF Output Low Pass FilterSpeaker Audio Amplifier Diagnostics TroubleshootingDiagnostic Function Troubleshooting Troubleshooting Chart If IC Voltage Charts Transistors Main CircuitMain Circuit Transistor Voltages Integrated Circuits Integrated Circuit Voltages ReceiveIntegrated Circuit Voltages Transmit Troubleshooting Troubleshooting Troubleshooting Troubleshooting Introduction ProgrammingSMP6100 Getting Started Program/Print/Save Select Features MenuScanning Program Radio Print Data Save Data to Disk Maxon SP200/200 Radio SP200/210 Exploded Mechanical Drawings & Parts Lists Exploded Mechanical Drawings & Parts ListsParts List Spare Parts SL100U2 SL100V2 Mechanical Parts For details on servicing, please refer to Section Parts List for Exploded Mechanical Drawing LCD TTR 1866 Dpfdpw SML-020MLTT86 SMD PCB LCDSKPT-110VA NUT M7 Bsbm PCB VCO PCB RF Aldc Bsbm M2.6 SL100 VHF Parts List V2 Control Circuit05B-000-5Z Chip Ceramic 0.012UF GRM39 X7R123K 25V P Diode Switching KDS181S A3Chip Ceramic 0.001UF GRM39 X7R102K 50V P Chip Ceramic 0.0022UF GRM39 X7R222J 50V P 2 V2 RF SW Tact SKPT-1101VA Thermistor Chip 33KNTCCS32163SH333KC TH1 RES.CHIP Trimmer 1K RH03E1C13XRES.CHIP Trimmer 10K RH03E1C14X Elect Capacitor 10UF 16V 20% Chip Ceramic 43PF GRM40 COG430J 50V P RE Power Module GNOK-M68776-E01 IC9Chip Ceramic 39PF GRM40 COG390J 50V P Chip Ceramic 47PF GRM39 COG470J 50V P Tcxo Assembly 4 V2 VCO 5 V2 Front End SL100 UHF Parts List U2 Control Circuit Connector Waffer Chip Resistor 18K 2 U2 RFChip Resistor 12K Chip Resistor 39K Chip Ceramic 10PF GRM40 COG100C 50V P RES.CHIP Trimmer K RH03E1C13XChip Ceramic 0.0015UF GRM39 X7R152K 50V P Chip Ceramic Chip Ceramic 470PF GRM40 COG471J 50V P Power Mpduleuhf M68732HGNOK IC9Chip Ceramic 2.2PF GRM40 COG2R2C 50V P Chip Ceramic 4.7PF GRM40 COG4R7C 50V P Coil Spring X0.35X7TR TcxoCoil Chip 18NHLL2012-F18NM Coil Spring 2X0.75X3TL SMD 4 VCO Maxon SP200/210 Radio RF PCB Circuit Diagrams & PCB LayoutsCircuit Diagrams & PCB Layouts Tcxo Circuit Diagrams & PCB Layouts Digital Board Layout Top Side Digital Board Layout Bottom Side RF Board Layout Top Side Issue RF Board Layout Bottom Side P406787a Front End Front-End Board Layout Tcxo Board Layout Spare Parts & Maintenance Policy 10SPARE Parts10.1Spare Parts Surface mount components Component ReplacementSurface mount component replacement Surface mount removal Surface mounted integrated circuit replacement Spare Parts & Maintenance Policy 11.2Test Equipment 11APPENDIX ACC-2003 Alignment BOX11.1Purpose 11.3Calibration Program Calibration Program Primary Screen Appendix a ACC-2003 Alignment BOX Asic Control Screen Rx Adjustment of Asic values TXTRIM2TXTRIM3 RX VOL Transmit Adjustments SAT BalanceSAT Deviation Receive Adjustments Audio Output Level V1 Default Frequency Table 11.4Default Settings11.4.1 V1 Band Default Settings V1 Default Asic Settings 11.4.2 V2 Band Default Settings V2 Default Frequency TableV2 Default Asic Settings 11.4.3 U1 Band Default Settings U1 Default Frequency TableU1 Default Asic Settings 11.4.4 U2 Band Default Settings U2 Default Frequency TableU2 Default Asic Settings