Realignment - Kenwood FM Transceiver TK-481 Service Manual

TK-480/481
5. PC Mode
5-1. Preface
The TK-480/481 transceiver is programmed by using a
personal computer, programming interface (KPG-36) and
programming software (KPG-49D).
The programming software can be used with an IBM PC
or compatible. Figure 1 shows the setup of an IBM PC for
programming.
5-2. Connection procedure
1. Connect the TK-480/481 to the personal computer with
the interface cable.
2. When the POWER switch on, user mode can be entered
immediately. When PC sends command the radio enter
PC mode, and "PROGRAM" is displayed on the LCD.
When data transmitting from transceiver, the red LED is
blinking.
When data receiving to transceiver, the green LED is
blinking.
Notes:
• The data stored in the personal computer must match
model type, when it is written into the flash memory.
• Change the TK-480/481 to PC mode, then attach the in-
terface cable.
5-3. KPG-36 description
(PC programming interface cable: Option)
The KPG-36 is required to interface the TK-480/481 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-36 connects the universal connector of the TK-
480/481 to the computers RS-232C serial port.
5-4. Programming software description
The KPG-49D programming disk is supplied in 3-1/2" disk
format. The software on this disk allows a user to program
TK-480/481 radios via programming interface cable (KPG-
36).
5-5. Programming with IBM PC
If data is transferred to the transceiver from an IBM PC
with the KPG-49D, 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 are
determined 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 for-
mat via the universal connector.
KPG-49D instruction manual parts No. : B62-1096-XX
12

REALIGNMENT

6. Firmware Programming Mode
6-1. Preface
Flash memory is mounted on the TK-480/481. This allows
the TK-480/481 to be upgraded when new features are re-
leased in the future. (For details on how to obtain the firm-
ware, contact Customer Service.)
6-2. Connection procedure
Connect the TK-480/481 to the personal computer (IBM
PC or compatible) with the interface cable (KPG-36). (Con-
nection is the same as in the PC Mode.)
6-3. Programming
1. Start up the programming software (KPG-49D), 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, 57600 bps)
and communications port in the Setup item.
4. Set the firmware to be updated by File select (=F1).
5. Turn the TK-480/481 power ON with the [S] switch held
down. Hold the switch down for two seconds until the
display changes to "PROG 57600". When "PROG
57600" appears, release your finger from the switch.
6. Check the connection between the TK-480/481 and the
personal computer, and make sure that the TK-480/481 is
in the Program mode.
7. Press F10 on the personal computer. A window opens on
the display to indicate progress of writing. When the TK-
480/481 starts to receive data. the [P] icon is blinking.
8. If writing ends successfully. the LED on the TK-480/481
lights and the checksum is displayed.
9. If you want to continue programming other TK-480/481 s,
repeat steps 5 to 8.
IBM-PC
KPG-36
KPG-49D
Fig. 1