Kenwood TK-785 Service Manual

Also see for TK-785: Instruction manual

5TK-785REALIGNMENT5. PC Mode5-1. PrefaceThe TK-785 transceiver is programmed by using a per-sonal computer, programming interface (KPG-46) and pro-gramming software (KPG-62D).The programming software can be used with an IBM PCor compatible. Figure 1 shows the setup of an IBM PC forprogramming.5-2. Connection Procedure1. Connect the TK-785 to the personal computer with theinterface cable.2. When the Power switch on, user mode can be enteredimmediately. When PC sends command the radio enterPC mode, and “PROGRAM” is displayed on the LCD.When data transmitting from transceiver, the red LED isblinking.When data receiving to transceiver, the green LED isblinking.Notes :• The data stored in the personal computer must matchmodel type, when it is written into the flash memory.• Change the TK-785 to PC mode, then attach the interfacecable.5-3. KPG-46 Description(PC programming interface cable : Option)The KPG-46 is required to interface the TK-785 to thecomputer. It has a circuit in its D-subconnector (25-pin) casethat converts the RS-232C logic level to the TTL level.The KPG-46 connects the modular microphone jack ofthe TK-785 to the computers RS-232C serial port.5-4. Programming Software KPG-62D DescriptionThe KPG-62D is the programming software for the trans-ceiver supplied on two 3.5" floppy disks. This software runsunder MS-Windows 95/98 on an IBM-PC or compatible ma-chine.The data can be input to or read from the transceiver andedited on the screen. The programmed or edited data canbe printed out. It is also possible to tune the transceiver.We recommend that install the KPG-62D for example tohard disk first then use it.5-5. Programming With IBM PCIf data is transferred to the transceiver from an IBM PCwith the KPG-62D, the destination data (basic radio informa-tion) for each set can be modified. Normally, it is not neces-sary to modify the destination data because their values aredetermined automatically when the frequency range (fre-quency type) is set.The values should be modified only if necessary.Data can be programmed into the flash memory in RS-232C format via the modular microphone jack.KPG-46IBM-PCKPG-62DTK-785Fig. 16. Firmware Programming Mode6-1. PrefaceFlash memory is mounted on the TK-785. This allows theTK-785 to be upgraded when new features are released inthe future. (For details on how to obtain the firmware, con-tact Customer Service.)6-2. Connection ProcedureConnect the TK-785 to the personal computer (IBM PC orcompatible) with the interface cable (KPG-46). (Connectionis the same as in the PC Mode.)6-3. Programming1. Start up the programming software (Fpro. exe).2. Set the communications speed (normally, 57600 bps)and communications port in the configuration item.3. Set the firmware to be updated by File name item.4. Turn the TK-785 Power ON with the [A] switch helddown. Hold the switch down until the display changes to“PROG 57600”. When “PROG 57600” appears, releaseyour finger from the switch.5. Check the connection between the TK-785 and the per-sonal computer, and make sure that the TK-785 is in theProgram mode.6. Press write button in the window. A window opens onthe display to indicate progress of writing. When the TK-785 starts to receive data, the icon is blinking.7. If writing ends successfully, the LED on the TK-785 lightsand the checksum is displayed.8. If you want to continue programming other TK-785, re-peat steps 4 to 7.Tuningcable