Kenwood TS-570S, TS-570D, TS-570D, TS-570S Hardware Description, Control Operation, Appendix, Com

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APPENDIX

APPENDIX: COM CONNECTOR PROTOCOL

HARDWARE DESCRIPTION

This transceiver uses a full-duplex, asynchronous, serial interface for communicating through the male 9-PIN RS-232C COM connector. Bytes are constructed with 1 start bit, 8 data bits, and 1 stop bit (4800 bps can be configured for 1 or 2 stop bits). No parity is used. The pinout and the pin functions of the COM connector are as shown below:

COM

9

8

7

 

6

5

4

3

2

1

Rear panel view

COM

COM Pin Name

Function

I/O

Pin No.

(Ref.: Computer)

(Ref.: Transceiver)

 

1

 

 

NC

 

 

 

 

 

 

 

 

2

 

 

 

 

 

Transmit data

Output

RXD

3

 

 

 

Receive data

Input

 

TXD

4

 

 

NC

 

 

 

 

 

 

 

 

5

GND

Signal ground

 

6

 

 

NC

7

 

RTS

Receive enable

Input

 

 

 

 

 

 

 

 

8

 

CTS

Transmit enable

Output

 

 

 

 

 

 

 

 

9

 

 

NC

 

 

 

 

 

 

 

 

RXD: Transmit data is serial data transferred from the transceiver to the computer.

TXD: Receive data is serial data transferred from the computer to the transceiver.

CONTROL OPERATION

Most computers handle data in the form of “bits” and “bytes”. A bit is the smallest piece of information that the computer can handle. A byte is composed of eight bits. This is the most convenient form for most computer data. This data may be sent in the form of either serial or parallel data strings. The parallel method is faster but more complicated, while the serial method is slower and requires less complicated equipment. The serial form is, therefore, a less expensive alternative.

Serial data transmission uses time-division methods over a single line. Using a single line also offers the advantage of reducing the number of errors due to line noise.

Only 3 lines are required theoretically for control of the transceiver via the computer:

Transmit data

Receive data

Ground

From a practical standpoint, it is also necessary to incorporate some means of controlling when this data transfer will occur. The computer and transceiver cannot be allowed to send data at the same time! The required control is achieved by using the RTS and CTS lines.

For example, the transceiver is placed into the transmit mode whenever the character string “TX;” is sent from the computer. The character string “TX;” is called a computer control command. It tells the transceiver what to do. There are numerous commands available for control of the transceiver. These commands may be incorporated into a computer program written in any high level language. Programming methods vary from computer to computer; therefore, refer to the instruction manuals provided with the terminal program and computer.

GND: Signal ground pin

RTS: This signal is applied to the transceiver. It is used to inhibit transmit data from the transceiver when the computer is not ready to receive the data. Transmit data is inhibited when the level is low.

CTS: This signal is applied from the transceiver. It is used to inhibit transmit data from the computer when the transceiver is not ready to receive the data.

Transmit data is stopped when the level is low.

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Contents TS-570S Supplied Accessories Accessory Part NumberApplicable Model Intelligent Digital Enhanced Communications SystemFeatures KEY+ Power onWriting Conventions Followed KEY2Contents Memory Features Optional AccessoriesInstalling Options Specifications Appendix COM Connector Protocol IndexPower Source Power Cable ProtectionPower Lines CleaningInstallation Antenna ConnectionAPPROX. Loss dB PER 30 Meters 100 Feet Correctly Matched 50 Ω LineDC Power Supply Connection InstallationGround Connection Lightning ProtectionFront Panel Accessory ConnectionsRear Panel Your First QSO Set the following as specified AF controlRF control Fully clockwise Fully counterclockwise If Shift control Center SQL controlYour Getting Acquainted Front PanelGetting Acquainted UP/DOWN buttons Split buttonTF-SET button Clear buttonMicrophone Rear Panel GND postKEY and Paddle jacks EXT SP jackDisplay @6M.SCR @7LSB@8USB #1FSKSwitching Power ON/OFF Adjusting VolumeOperating Basics Selecting VFO a or VFO BSelecting a Mode Adjusting SquelchSelecting a Frequency Front Panel MeterSelecting Transmit Power Press PWR again to complete the settingTransmitting Microphone GainWhat is a MENU? Menu SetupMenu A/ Menu B Page Page Menu Setup Cross Reference for Menu FunctionsBasic Communicating SSB TransmissionCW Transmission Basic CommunicatingTX SIDETONE/ RX Pitch Frequency Auto ZERO-BEATFM Transmission AM TransmissionTX Deviation Selection Press FilterSpecialized Communicating SPLIT-FREQUENCY OperationTF-SET Transmit Frequency SET UP/DWNFM Repeater Operation Specialized CommunicatingArrl 10-METER Band Plan Mode/ActivityWhen you are called When you make a callSpecialized Communicating Selecting Subtone Frequency Continuous or Burst SUBTONES?Digital Operation Rtty Frequency Shift KeyingRtty Frequencies Iaru Region A./CanadaMode Meaning Mode Data RatePacket Frequencies Europe/AfricaSlow Scan TV/ Facsimile Sstv FrequenciesReceiving Communicating AidsSelecting Your Frequency RIT Receive Incremental Tuning Communicating AidsRX Equalizer AGC Automatic Gain ControlVOX VOICE-OPERATED Transmit Microphone Input LevelXIT Transmit Incremental Tuning Communicating Aids Speech ProcessorTransmit Inhibit Changing Transmit Bandwidth SSB/AMEqualizing Transmit Audio SSB/FM/AM BandwidthAuto Weighting Reversible Auto WeightingCW BREAK-IN Electronic KeyerBUG KEY Function Changing LOCKED-WEIGHTCW Message Memory Rejecting Interference If FilterNoise Blanker If ShiftAttenuator PreamplifierDSP Tools Rejecting InterferenceBeat Cancel Setting NR2 Time ConstantNoise Reduction CW/ FSK ModesMemory Features Conventional MemoryStoring Data in Memory Simplex ChannelsMemory Features Split-Frequency ChannelsMemory Recall Memory Recall and ScrollMemory Scroll Temporary Frequency ChangesMemory-VFO Split Operation To use a memory channel for receivingMemory VFO Transfer Memory Features Memory TransferChannel Channel Transfer Full Reset Storing Frequency RangesErasing Memory Channels Confirming Start/End FrequenciesStoring Into Quick Memory Memory Channel LockoutVOX ON/OFF RIT ON/OFF XIT ON/OFFTemporary Frequency Changes Memory Features Recalling Quick MemoryQuick Memory VFO Transfer Scan Program ScanScan Hold Transceiver provides the following types of ScanMemory Scan ScanALL-CHANNEL Scan Group ScanMicroprocessor Reset Switching ANT 1/ ANTOperator Conveniences Frequency Lock FunctionDisplay Dimmer Beep FunctionProgram Function Button Setting UP Using Quick TransferQuick Data Transfer Operator ConveniencesUsing a Transverter Menu SettingComputer Control Communication ParametersAutomatic Antenna Tuner PresettingAT Tune again DRU-3A Digital Recording Unit OptionalMessage Playback Recording MessagesSending Messages Changing VolumeChanging Inter-message Interval New Mode StepsMenu VoiceOptional Accessories DRU-3APC-1A PG-2ZInstalling Options Removing the Bottom CaseVS-3 Voice Synthesizer Unit Installing OptionsFilters Crystal Oscillator Tcxo SO-2 TEMPERATURE-COMPENSATEDCut the leads of the R503 and R504 resistors Computer Compatible TransceiverConnecting Peripheral Equipment Rtty EquipmentLinear Amplifier Antenna TunerMCP and TNC Pin No FunctionMaintenance Service NoteService CleaningInternal Adjustments MaintenanceAccessing the Internal Fuse Reference Frequency CalibrationTroubleshooting Problem Probable Cause Corrective ActionFollowed DSP Slope LOW control orPress LSB/USB, CW/FSK, or Changing ReceivePress LSB/USB or FM/AM to Repeater Operation Communication ParametersMax 100 W Output power TS-570S TS-570DFSK, FM Min Max 25 WSpecifications SSB, CW, FSKHardware Description Control OperationAppendix COMComputer Control Commands Alphabetical CommandsError Messages ParametersAlphabetical Command Table OFF/ONParameter Table FormatMenu Selection Table for EX Command UP/DOWNReading Command Tables Computer Control Command TablesDN UP DOWN/UP LK Frequency Lock MG MIC Gain RT RIT RX TX RX, TX VOX Function VFO DSPSstv