Kenwood TKR-740 Service Manual page 14

TKR-740
3. PC M ode
3-1. Preface
The TKR-740 repeater is programmed by using a personal
computer, programming interface and KPG-47D software.
(Version 2.00 or later)
3-2. Connection procedure
1. Connect the TKR-740 to the personal computer with the
interface cable.
2. When power is applied, the user mode is entered immediately.
When the PC sends a command, the repeater enters the
PC mode and displays "PC" on the 7-segment LED. When
data is being transmitted to the PC from the repeater, the
TX LED flashes. The BUSY LED flashes when data from
the PC is being received by the repeater.
Notes:
The data stored in the personal computer must match
●
the model type, when it is written into the flash memory.
Change the TKR-740 to PC mode, then attach the interface
●
cable.
3-3. KPG-46 description (PC programming interface
cable : Option)
The KPG-46 is required to interface the TKR-740 to the
computer. It has a circuit in its D-subconnector (25-pin)
case that converts the RS-232C logic level to the TTL level.
The KPG-46 connects the MICROPHONE connector of the
TKR-740 to the computer' s RS-232C serial port.
3-4. Programming softw are description
The KPG-47D programming disk is supplied in 3-1/2" disk
format. The software on the disk allows a user to program
TKR-740 repeater via the programming interface cable
(KPG-46).
3-5. Programming w ith IBM PC
Data can be programmed into the flash memory in RS-
232C format via the MICROPHONE connector.
Note:
Select a frequency band [2.158-174MHz] in the band select
menu of FPU.
(Ver 2.00 or later)
14
REALIGNMENT
Fig.1
4. Firmw are Programming M ode
4-1. Preface
The TKR-740 uses flash memory to allow it to be easily
upgraded when new features are released in the future.
4-2. Connection procedure
Connect the TKR-740 to the personal computer (IBM PC
or compatible) with the interface cable (KPG-
46).(Connection is the same as in the PC Mode.)
Note:
You can only program firmware from the 8-pin microphone
connector on the front panel. Using the 25-pin logic interface
on the rear panel will not work.
4-3. Programming
1. Start up the programming software (KPG-47D), select
"firmware program" in the "Program" item, and press
the Return key on the personal computer. This starts up
the firmware programmer.
2. The top screen is displayed. Press any key to advance to
the next screen.
3. Set the communications speed (normally, 115200 bps)
and communications port in the Setup item.
4. Set the firmware to be updated by File select (=F1).
5. Turn the TKR-740 power ON with the [PF 1] key held
down. Hold the key down for one second until the 7-
segment display changes to "P.G". When "P.G." appears,
release your finger from the key.
6. Check the connection between the TKR-740 and the
personal computer, and make sure that the TKR-740 is in
the Program Mode.
7. Press F10 on the personal computer. A window opens
on the display to indicate progress of writing.
8. If writing ends successfully, the TX LED on the TKR-740
lights.
9. If you want to continue programming other TKR-740s,
repeat steps 3 to 6.
Notes:
To start the Firmware Programmer from KPG-47D, the
●
Fpro path must be set up by KPG-47D Setup.
This mode cannot entered if the Firmware Program mode
●
is set to Disable in the Programming software (KPG-47D).
4-4. Function
If you press the [PF 1] key (front panel), both decimal point
on the 7-segment display will disappear. The writing speed
is 38400 bps (low-speed mode). If you press the [PF 1]
key again, the right hand decimal points will light. The
writing speed is 57600 bps (middle-speed mode).
Note:
Normally, write in the high-speed mode (115200 bps).