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

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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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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 11-1List of Tables Maxon SP200/210 Radio Issue 03/01 Amendments to this Manual Using this ManualIntroduction Category C Engineering BulletinContact Information Specifications GeneralVibration Environmental Operating Temperature RangePhysical Dimensions Synthesiser ESD EMCAccessories & Options Pre-Install Check AccessoriesOptions Accessories & Options INSTALLATION, Commissioning & Alignment INSTALLATION, Commissioning & AlignmentInstallation ConnectionsCommissioning Recommended Test EquipmentCommissioning Equipment Commissioning KitTest Equipment Set-up using Discrete Test Equipment Discrete Test EquipmentSK 3100 Service Kit Test Equipment Connection Transmitter Performance TestsReceiver Performance Tests Power Adjustment SquelchAudio Output Preparation Tests without DisassemblyAlignment VHFDisassembly 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 EepromAudio Signal Path Audio AsicSat Signal Path Miscellaneous Signals and ControllerAudio/SAT Circuits Common RF Circuits Battery Low Indicator CircuitLEDs and indicators PLL SynthesiserCharge Pump and Loop Filter PLL ICOut-of-Lock Detector DC to DC ConverterTransmitter Antenna SwitchAutomatic power control APC circuits PA moduleReceiver Front EndSquelch Mute Circuit First MixerSecond mixer, Second IF, FM detector 16kHz Band Pass FilterNoise detector circuit AF Output Low Pass FilterSpeaker Audio Amplifier Diagnostics TroubleshootingDiagnostic Function TroubleshootingTroubleshooting Chart If ICVoltage Charts Transistors Main CircuitMain Circuit Transistor Voltages Integrated Circuits Integrated Circuit Voltages ReceiveIntegrated Circuit Voltages Transmit Troubleshooting Troubleshooting Troubleshooting Troubleshooting Introduction ProgrammingSMP6100 Getting StartedProgram/Print/Save Select Features MenuScanning Program RadioPrint Data Save Data to DiskMaxon SP200/200 Radio SP200/210 Exploded Mechanical Drawings & Parts Lists Exploded Mechanical Drawings & Parts ListsParts List Spare PartsSL100U2 SL100V2Mechanical Parts For details on servicing, please refer to SectionParts List for Exploded Mechanical Drawing LCD TTR 1866 DpfdpwSML-020MLTT86 SMD PCB LCDSKPT-110VA NUT M7 BsbmPCB VCO PCB RF Aldc Bsbm M2.6SL100 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 P2 V2 RF SW Tact SKPT-1101VAThermistor 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 PTcxo Assembly 4 V2 VCO 5 V2 Front EndSL100 UHF Parts List U2 Control CircuitConnector Waffer Chip Resistor 18K 2 U2 RFChip Resistor 12K Chip Resistor 39KChip Ceramic 10PF GRM40 COG100C 50V P RES.CHIP Trimmer K RH03E1C13XChip Ceramic 0.0015UF GRM39 X7R152K 50V P Chip CeramicChip Ceramic 470PF GRM40 COG471J 50V P Power Mpduleuhf M68732HGNOK IC9Chip Ceramic 2.2PF GRM40 COG2R2C 50V P Chip Ceramic 4.7PF GRM40 COG4R7C 50V PCoil Spring X0.35X7TR TcxoCoil Chip 18NHLL2012-F18NM Coil Spring 2X0.75X3TL SMD4 VCO Maxon SP200/210 Radio RF PCB Circuit Diagrams & PCB LayoutsCircuit Diagrams & PCB Layouts TcxoCircuit 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 removalSurface mounted integrated circuit replacement Spare Parts & Maintenance Policy 11.2Test Equipment 11APPENDIX ACC-2003 Alignment BOX11.1Purpose 11.3Calibration ProgramCalibration Program Primary Screen Appendix a ACC-2003 Alignment BOXAsic Control Screen Rx Adjustment of Asic values TXTRIM2TXTRIM3 RX VOL Transmit Adjustments SAT BalanceSAT Deviation Receive Adjustments Audio Output LevelV1 Default Frequency Table 11.4Default Settings11.4.1 V1 Band Default Settings V1 Default Asic Settings11.4.2 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