Maxon Telecom SP200, SP210 service manual Power Adjustment, Squelch, Audio Output

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SP200/210

g.Check that the signal generator RF level is < -117dBm (UHF) or

<-118dBm (VHF).

Squelch

a.Ensure that both the radio and the Test Set are set to the appropriate channel spacing.

b.With the above setting, reduce the RF level to –130dBm. The radio should be mute.

c.Adjust the RF level until the SINAD meter reads 10dB. The radio should unmute. (Note: it will be necessary to press and hold the monitor button to read

<10dB SINAD).

Audio Output

a.Set the RF signal generator to 1mV pd (-47.0dBm) and the tone and deviation as above.

b.Connect the audio power meter to the external accessories socket on the radio, via the test box.

c.Adjust the volume control on the radio under test to maximum (fully clockwise). The voltmeter should indicate >= 1.55V. The audio power meter should read >= 300mW.

d.Decrease the volume control on the radio so that the voltmeter reads 1.0V. Check that the audio distortion is <5%.

Note: The audio power meter should be set to 8Ω .

This concludes the Performance Tests.

If the Radio should fail any of these tests it will be necessary to turn to the next section on Alignment.

4.4 Power Adjustment

Note: Any power adjustments made should be within R&TTE parameters.

Transmit periods longer than 5 minutes are to be avoided.

Power setting potentiometers are located underneath the upper label on the back of the radio. A replacement label is shipped with every radio.

Maxon SP200/210 Radio

This section is included here as it is not necessary to disassemble the radio in order to set the power output.

A stable power source is required and therefore the ACC-2003 Interface Box should be used as this contains a battery eliminator.

For squelch adjustments, see Section 4.5.6.

20/25kHzHigh

12.5kHz Low

Squelch Power

Figure 4-9 - Back Panel Adjusters

a.Select a mid-frequency channel with High Power.

b.Set the PTT switch to on.

c.Adjust RV1 (High) to give 5W ± 0.1W.

d.Set the PTT switch to off.

e.Select a mid-frequency channel with Low Power.

f.Set the PTT switch to on.

g.Adjust RV3 (Low) to give 1W ± 0.1W.

h.Set the PTT switch to off.

i.Repeat steps a to h until switching between the two channels gives Low Power of 1W and High Power of 5W.

j.Switch to a low frequency, low power channel.

k.Set the PTT switch to on.

l.Check that the power output is 1W ± 1.5dB (0.7 to 1.41W).

m.Set the PTT switch to off.

n.Repeat steps k to m for a low power, high frequency channel.

Issue 1.0

INSTALLATION, COMMISSIONING & ALIGNMENT

03/01

Page 4-7

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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 11.4 Default Settings 11-8 SL100 UHF Parts List10-1 11-1List of Tables Maxon SP200/210 Radio Issue 03/01 Introduction Using this ManualAmendments to this Manual Category C Engineering BulletinContact Information General SpecificationsPhysical Dimensions Synthesiser Environmental Operating Temperature RangeVibration ESD EMCAccessories & Options Pre-Install Check AccessoriesOptions Accessories & Options Installation INSTALLATION, Commissioning & AlignmentINSTALLATION, Commissioning & Alignment ConnectionsRecommended Test Equipment CommissioningCommissioning Kit Commissioning EquipmentDiscrete Test Equipment Test Equipment Set-up using Discrete Test EquipmentSK 3100 Service Kit Test Equipment Connection Transmitter Performance TestsReceiver Performance Tests Power Adjustment SquelchAudio Output Alignment Tests without DisassemblyPreparation 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 Introduction Detailed Functional DescriptionCommon Circuits EepromAudio Asic Audio Signal PathMiscellaneous Signals and Controller Sat Signal PathAudio/SAT Circuits LEDs and indicators Battery Low Indicator CircuitCommon RF Circuits PLL SynthesiserOut-of-Lock Detector PLL ICCharge Pump and Loop Filter DC to DC ConverterAutomatic power control APC circuits Antenna SwitchTransmitter PA moduleFront End ReceiverSecond mixer, Second IF, FM detector First MixerSquelch Mute Circuit 16kHz Band Pass FilterNoise detector circuit AF Output Low Pass FilterSpeaker Audio Amplifier Diagnostic Function TroubleshootingDiagnostics TroubleshootingIf IC Troubleshooting ChartVoltage Charts Transistors Main CircuitMain Circuit Transistor Voltages Integrated Circuits Integrated Circuit Voltages ReceiveIntegrated Circuit Voltages Transmit Troubleshooting Troubleshooting Troubleshooting Troubleshooting SMP6100 ProgrammingIntroduction Getting StartedScanning Select Features MenuProgram/Print/Save Program RadioSave Data to Disk Print DataMaxon SP200/200 Radio SP200/210 Parts List Exploded Mechanical Drawings & Parts ListsExploded Mechanical Drawings & Parts Lists Spare PartsSL100V2 SL100U2For details on servicing, please refer to Section Mechanical PartsLCD TTR 1866 Dpfdpw Parts List for Exploded Mechanical DrawingSKPT-110VA PCB LCDSML-020MLTT86 SMD NUT M7 BsbmPCB VCO PCB RF Bsbm M2.6 AldcSL100 VHF Parts List V2 Control Circuit05B-000-5Z Chip Ceramic 0.001UF GRM39 X7R102K 50V P Diode Switching KDS181S A3Chip Ceramic 0.012UF GRM39 X7R123K 25V P Chip Ceramic 0.0022UF GRM39 X7R222J 50V PSW Tact SKPT-1101VA 2 V2 RFRES.CHIP Trimmer 10K RH03E1C14X RES.CHIP Trimmer 1K RH03E1C13XThermistor Chip 33KNTCCS32163SH333KC TH1 Elect Capacitor 10UF 16V 20%Chip Ceramic 39PF GRM40 COG390J 50V P RE Power Module GNOK-M68776-E01 IC9Chip Ceramic 43PF GRM40 COG430J 50V P Chip Ceramic 47PF GRM39 COG470J 50V PTcxo Assembly 5 V2 Front End 4 V2 VCOU2 Control Circuit SL100 UHF Parts ListConnector Waffer Chip Resistor 12K 2 U2 RFChip Resistor 18K Chip Resistor 39KChip Ceramic 0.0015UF GRM39 X7R152K 50V P RES.CHIP Trimmer K RH03E1C13XChip Ceramic 10PF GRM40 COG100C 50V P Chip CeramicChip Ceramic 2.2PF GRM40 COG2R2C 50V P Power Mpduleuhf M68732HGNOK IC9Chip Ceramic 470PF GRM40 COG471J 50V P Chip Ceramic 4.7PF GRM40 COG4R7C 50V PCoil Chip 18NHLL2012-F18NM TcxoCoil Spring X0.35X7TR Coil Spring 2X0.75X3TL SMD4 VCO Maxon SP200/210 Radio Circuit Diagrams & PCB Layouts Circuit Diagrams & PCB LayoutsRF PCB 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 component replacement Component ReplacementSurface mount components Surface mount removalSurface mounted integrated circuit replacement Spare Parts & Maintenance Policy 11.1Purpose 11APPENDIX ACC-2003 Alignment BOX11.2Test Equipment 11.3Calibration ProgramAppendix a ACC-2003 Alignment BOX Calibration Program Primary ScreenAsic Control Screen Rx Adjustment of Asic values TXTRIM2TXTRIM3 RX VOL Transmit Adjustments SAT BalanceSAT Deviation Audio Output Level Receive Adjustments11.4.1 V1 Band Default Settings 11.4Default SettingsV1 Default Frequency Table 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
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