Maxon Telecom SP210, SP200 service manual Test Equipment Connection, Transmitter Performance Tests

Page 20

Maxon SP200/210 Radio

EEPROM programming

Ensure that the radio has the required customer parameters programmed, otherwise ensure that the radio is programmed with at least the lowest, middle and highest Rx/Tx frequencies prior to aligning the VHF and UHF scanning handheld series radio.

Ensure that High and Low power are programmed.

When CTCSS and DCS performance checks are also required, ensure that the lowest, middle and highest Rx/Tx frequencies include:

Lowest Rx/Tx freq. ch. 67.0 Hz CTCSS Middle Rx/Tx freq. ch. DCS Code 072 Highest Rx/Tx freq. ch. 250.3 Hz CTCSS

The middle Rx/Tx frequencies should be halfway between the lowest and the highest frequencies.

Programming details are given in Section 7.

4.3.1 Test Equipment Connection

Use a battery or connect the power supply leads from the battery eliminator to the power supply. The red, positive, lead connects to +7.5Vdc. The black, negative, lead connects to the negative, terminal of the power supply.

A connection diagrams are given in

Figures 4-4, 4-6 or 4-7.

Set the radio to a channel with High power.

4.3.2 Transmitter Performance Tests

Power Output

This test is only possible using the battery eliminator.

a.Connect the transmitter to the Communications Test Set (CTS).

b.Set the power supply to 7.5Vdc and connect a dc voltmeter across the power supply to monitor the supply voltage.

c.Set the CTS to the same frequency as the radio. Activate PTT. Check and record the power output. The nominal power output is 5W ± 1.5dB (3.5 to 7W)

d.Reduce the power supply voltage to 6.0Vdc and PTT. The output power should be greater than 50% of the level measured above.

INSTALLATION, COMMISSIONING & ALIGNMENT - Page 4-6

SP200/210

e.Switch to a channel with a low power and ensure that the nominal power is 1W ± 1.5dB.

Frequency Error

a.Check that the transmit frequency is within +/- 500Hz (VHF) or +/- 750Hz (UHF) of the frequency which is programmed

into the radio.

Deviation and Distortion

a.Set the radio to the middle Tx frequency.

b.Set the audio signal generator to 1kHz tone, low output impedance PTT and adjust the AF generator level for 60% system deviation:

12.5kHz channel spacing

1.5kHz dev.

20kHz channel spacing

2.4kHz dev.

25kHz channel spacing

3kHz dev.

c.Measure the audio distortion. This should be less than 5%.

d.Increase the audio signal generator level by 20dB (10x voltage). The peak deviation should be:

12.5kHz channel spacing <= 2.25kHz dev.

20kHz channel spacing

<= 3.6kHz dev.

25kHz channel spacing

<= 4.5kHz dev.

4.3.3 Receiver Performance Tests

Sensitivity

The SINAD performance test may be used to test the sensitivity of the receiver.

a.Connect the Communications Test Set, modulated with a 1kHz tone, to the radio.

b.Set the frequency to correspond to the Rx frequency of one of the channels programmed into the radio.

c.Using the Test Box, ensure that the AF output from the Interface Box is connected to the CTS SINAD meter.

d.Set the volume control to mid-range.

e.Set the Test Set deviation to:

12.5kHz channel spacing

1.5kHz dev.

20kHz channel spacing

2.4kHz dev.

25kHz channel spacing

3kHz dev.

f.Adjust the RF signal generator level until the SINAD meter reads 12dB.

Issue 1.0 03/01

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Contents SP200/210 NSW Australia Tel +61 0 2 9707 Amendment Record Sheet Issue No Effective Date Reason for Change SignatureAmendment Record Sheet Maxon SP200/210 Radio Table of Contents SL100 UHF Parts List 11.4 Default Settings 11-810-1 11-1List of Tables Maxon SP200/210 Radio Issue 03/01 Using this Manual IntroductionAmendments to this Manual Category C Engineering BulletinContact Information Specifications GeneralEnvironmental Operating Temperature Range Physical Dimensions SynthesiserVibration ESD EMCOptions Accessories & OptionsPre-Install Check Accessories Accessories & Options INSTALLATION, Commissioning & Alignment InstallationINSTALLATION, Commissioning & Alignment ConnectionsCommissioning Recommended Test EquipmentCommissioning Equipment Commissioning KitTest Equipment Set-up using Discrete Test Equipment Discrete Test EquipmentSK 3100 Service Kit Receiver Performance Tests Test Equipment ConnectionTransmitter Performance Tests Audio Output Power AdjustmentSquelch Tests without Disassembly AlignmentPreparation VHFRemoving and Replacing the Belt Clip Disassembly and Re-assembly of the RadioRemoving and Replacing Battery PLL Alignment Removing and Replacing the Main AssemblyLocation of Adjustment Points Tcxo Squelch SensitivityTransmitter Alignment Radiocommunications Test SET Ctcss / DCS deviation Balance AdjustmentAudio deviation adjustment Receiver Alignment Audio Volume LevelAt maximum volume, nominal distortion is 10% Detailed Functional Description IntroductionCommon Circuits EepromAudio Signal Path Audio AsicSat Signal Path Miscellaneous Signals and ControllerAudio/SAT Circuits Battery Low Indicator Circuit LEDs and indicatorsCommon RF Circuits PLL SynthesiserPLL IC Out-of-Lock DetectorCharge Pump and Loop Filter DC to DC ConverterAntenna Switch Automatic power control APC circuitsTransmitter PA moduleReceiver Front EndFirst Mixer Second mixer, Second IF, FM detectorSquelch Mute Circuit 16kHz Band Pass FilterSpeaker Audio Amplifier Noise detector circuitAF Output Low Pass Filter Troubleshooting Diagnostic FunctionDiagnostics TroubleshootingTroubleshooting Chart If ICMain Circuit Transistor Voltages Voltage ChartsTransistors Main Circuit Integrated Circuit Voltages Transmit Integrated CircuitsIntegrated Circuit Voltages Receive Troubleshooting Troubleshooting Troubleshooting Troubleshooting Programming SMP6100Introduction Getting StartedSelect Features Menu ScanningProgram/Print/Save Program RadioPrint Data Save Data to DiskMaxon SP200/200 Radio SP200/210 Exploded Mechanical Drawings & Parts Lists Parts ListExploded Mechanical Drawings & Parts Lists Spare PartsSL100U2 SL100V2Mechanical Parts For details on servicing, please refer to SectionParts List for Exploded Mechanical Drawing LCD TTR 1866 DpfdpwPCB LCD SKPT-110VASML-020MLTT86 SMD NUT M7 BsbmPCB VCO PCB RF Aldc Bsbm M2.605B-000-5Z SL100 VHF Parts ListV2 Control Circuit Diode Switching KDS181S A3 Chip Ceramic 0.001UF GRM39 X7R102K 50V PChip Ceramic 0.012UF GRM39 X7R123K 25V P Chip Ceramic 0.0022UF GRM39 X7R222J 50V P2 V2 RF SW Tact SKPT-1101VARES.CHIP Trimmer 1K RH03E1C13X RES.CHIP Trimmer 10K RH03E1C14XThermistor Chip 33KNTCCS32163SH333KC TH1 Elect Capacitor 10UF 16V 20%RE Power Module GNOK-M68776-E01 IC9 Chip Ceramic 39PF GRM40 COG390J 50V PChip Ceramic 43PF GRM40 COG430J 50V P Chip Ceramic 47PF GRM39 COG470J 50V PTcxo Assembly 4 V2 VCO 5 V2 Front EndSL100 UHF Parts List U2 Control CircuitConnector Waffer 2 U2 RF Chip Resistor 12KChip Resistor 18K Chip Resistor 39KRES.CHIP Trimmer K RH03E1C13X Chip Ceramic 0.0015UF GRM39 X7R152K 50V PChip Ceramic 10PF GRM40 COG100C 50V P Chip CeramicPower Mpduleuhf M68732HGNOK IC9 Chip Ceramic 2.2PF GRM40 COG2R2C 50V PChip Ceramic 470PF GRM40 COG471J 50V P Chip Ceramic 4.7PF GRM40 COG4R7C 50V PTcxo Coil Chip 18NHLL2012-F18NMCoil 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 10.1Spare Parts Spare Parts & Maintenance Policy10SPARE Parts Component Replacement Surface mount component replacementSurface mount components Surface mount removalSurface mounted integrated circuit replacement Spare Parts & Maintenance Policy 11APPENDIX ACC-2003 Alignment BOX 11.1Purpose11.2Test Equipment 11.3Calibration ProgramCalibration Program Primary Screen Appendix a ACC-2003 Alignment BOXAsic Control Screen Rx TXTRIM3 Adjustment of Asic valuesTXTRIM2 RX VOL SAT Deviation Transmit AdjustmentsSAT Balance Receive Adjustments Audio Output Level11.4Default Settings 11.4.1 V1 Band Default SettingsV1 Default Frequency Table V1 Default Asic SettingsV2 Default Asic Settings 11.4.2 V2 Band Default SettingsV2 Default Frequency Table U1 Default Asic Settings 11.4.3 U1 Band Default SettingsU1 Default Frequency Table U2 Default Asic Settings 11.4.4 U2 Band Default SettingsU2 Default Frequency Table
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