Sat Signal Path | Maxon Telecom SP200, SP210 instruction

SP200/210Maxon SP200/210 Radio

5.3.2 Sat Signal Path

ASW4	ASW4 switches between RxSAT (RDIN) and Tx SAT (TXIN) and
	routes to the filter.
VSCLPF	Seventh order Elliptic Variable Switched Capacitor Low Pass Filter.
	Cut-off frequency is variable from 50Hz to 300Hz. Level adjustable in
	0.5dB steps from –3dB to +2.5dB. Output is on pin 23 FLT OUT.
SATRIM1	Not used.
SATRIM2	SAT level adjustment. Amplitude is controlled in 0.5dB steps from –
	3dB to +2.5dB. Output is on pin 23 FLTOUT.
COM	Compares the external reference voltage (COMPPIN-) with the applied
	SAT signal which is from FLTOUT to COMPIN+ and it goes to Logic
	High and Logic Low at this point. The output COMPOUT (pin 21) goes
	to the microcontroller IC406. NB in transmit the SAT is switched into
	TXSUM.

5.3.3 Miscellaneous Signals and Controller

ADC / DAC

ADC is not used. DACs are 8 bit devices.

CONTROL

Control serial interface for control lines.

DATA

Operates as output line for a READ instruction and as input line for a

WRITE instruction, Pin 18.

CLOCK

This is the synchronous input terminal for communication with the

microcontroller, pin 12.

ENBL

With an active low, data read and write is enabled.

AGND.DGND

Reference analogue and digital grounds.

Figure 5-1 – ASIC Block Diagram

Issue 1.0	DETAILED FUNCTIONAL DESCRIPTION
03/01	Page 5-3

Image 31

Maxon Telecom SP200, SP210 service manual Sat Signal Path, Miscellaneous Signals and Controller

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 11-1 SL100 UHF Parts List11.4 Default Settings 11-8 10-1 List of Tables Maxon SP200/210 Radio Issue 03/01 Category C Engineering Bulletin Using this ManualIntroduction Amendments to this Manual Contact Information General Specifications ESD EMC Environmental Operating Temperature RangePhysical Dimensions Synthesiser Vibration Pre-Install Check Accessories Accessories & OptionsOptions Accessories & Options Connections INSTALLATION, Commissioning & AlignmentInstallation INSTALLATION, Commissioning & Alignment Recommended Test Equipment Commissioning Commissioning Kit Commissioning Equipment Discrete Test Equipment Test Equipment Set-up using Discrete Test Equipment SK 3100 Service Kit Transmitter Performance Tests Test Equipment ConnectionReceiver Performance Tests Squelch Power AdjustmentAudio Output VHF Tests without DisassemblyAlignment Preparation Removing and Replacing Battery Disassembly and Re-assembly of the RadioRemoving and Replacing the Belt Clip Location of Adjustment Points Removing and Replacing the Main AssemblyPLL Alignment Transmitter Alignment Squelch SensitivityTcxo Radiocommunications Test SET Audio deviation adjustment Balance AdjustmentCtcss / DCS deviation At maximum volume, nominal distortion is 10% Audio Volume LevelReceiver Alignment Eeprom Detailed Functional DescriptionIntroduction Common Circuits Audio Asic Audio Signal Path Miscellaneous Signals and Controller Sat Signal Path Audio/SAT Circuits PLL Synthesiser Battery Low Indicator CircuitLEDs and indicators Common RF Circuits DC to DC Converter PLL ICOut-of-Lock Detector Charge Pump and Loop Filter PA module Antenna SwitchAutomatic power control APC circuits Transmitter Front End Receiver 16kHz Band Pass Filter First MixerSecond mixer, Second IF, FM detector Squelch Mute Circuit AF Output Low Pass Filter Noise detector circuitSpeaker Audio Amplifier Troubleshooting TroubleshootingDiagnostic Function Diagnostics If IC Troubleshooting Chart Transistors Main Circuit Voltage ChartsMain Circuit Transistor Voltages Integrated Circuit Voltages Receive Integrated CircuitsIntegrated Circuit Voltages Transmit Troubleshooting Troubleshooting Troubleshooting Troubleshooting Getting Started ProgrammingSMP6100 Introduction Program Radio Select Features MenuScanning Program/Print/Save Save Data to Disk Print Data Maxon SP200/200 Radio SP200/210 Spare Parts Exploded Mechanical Drawings & Parts ListsParts List Exploded Mechanical Drawings & Parts Lists SL100V2 SL100U2 For details on servicing, please refer to Section Mechanical Parts LCD TTR 1866 Dpfdpw Parts List for Exploded Mechanical Drawing NUT M7 Bsbm PCB LCDSKPT-110VA SML-020MLTT86 SMD PCB VCO PCB RF Bsbm M2.6 Aldc V2 Control Circuit SL100 VHF Parts List05B-000-5Z Chip Ceramic 0.0022UF GRM39 X7R222J 50V P Diode Switching KDS181S A3Chip Ceramic 0.001UF GRM39 X7R102K 50V P Chip Ceramic 0.012UF GRM39 X7R123K 25V P SW Tact SKPT-1101VA 2 V2 RF Elect Capacitor 10UF 16V 20% RES.CHIP Trimmer 1K RH03E1C13XRES.CHIP Trimmer 10K RH03E1C14X Thermistor Chip 33KNTCCS32163SH333KC TH1 Chip Ceramic 47PF GRM39 COG470J 50V P RE Power Module GNOK-M68776-E01 IC9Chip Ceramic 39PF GRM40 COG390J 50V P Chip Ceramic 43PF GRM40 COG430J 50V P Tcxo Assembly 5 V2 Front End 4 V2 VCO U2 Control Circuit SL100 UHF Parts List Connector Waffer Chip Resistor 39K 2 U2 RFChip Resistor 12K Chip Resistor 18K Chip Ceramic RES.CHIP Trimmer K RH03E1C13XChip Ceramic 0.0015UF GRM39 X7R152K 50V P Chip Ceramic 10PF GRM40 COG100C 50V P Chip Ceramic 4.7PF GRM40 COG4R7C 50V P Power Mpduleuhf M68732HGNOK IC9Chip Ceramic 2.2PF GRM40 COG2R2C 50V P Chip Ceramic 470PF GRM40 COG471J 50V P Coil Spring 2X0.75X3TL SMD TcxoCoil Chip 18NHLL2012-F18NM Coil Spring X0.35X7TR 4 VCO Maxon SP200/210 Radio Tcxo Circuit Diagrams & PCB LayoutsCircuit Diagrams & PCB Layouts RF PCB 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 10SPARE Parts Spare Parts & Maintenance Policy10.1Spare Parts Surface mount removal Component ReplacementSurface mount component replacement Surface mount components Surface mounted integrated circuit replacement Spare Parts & Maintenance Policy 11.3Calibration Program 11APPENDIX ACC-2003 Alignment BOX11.1Purpose 11.2Test Equipment Appendix a ACC-2003 Alignment BOX Calibration Program Primary Screen Asic Control Screen Rx TXTRIM2 Adjustment of Asic valuesTXTRIM3 RX VOL SAT Balance Transmit AdjustmentsSAT Deviation Audio Output Level Receive Adjustments V1 Default Asic Settings 11.4Default Settings11.4.1 V1 Band Default Settings V1 Default Frequency Table V2 Default Frequency Table 11.4.2 V2 Band Default SettingsV2 Default Asic Settings U1 Default Frequency Table 11.4.3 U1 Band Default SettingsU1 Default Asic Settings U2 Default Frequency Table 11.4.4 U2 Band Default SettingsU2 Default Asic Settings