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Front Panel
DC SOURCE LED
DATA LED
DC
DATA
SOURCE
Start the Programming Menu Mode
Press and hold the MODE SW key for more than 2 sec-
onds. "DC SOURCE" LED blinks and then the KGP-2A/2B
enters the programming menu mode.
Note: If the KGP-2A/2B does not receive any programming
commands from a PC within 30 seconds after the "DC
SOURCE" LED starts blinking. It returns normal operation
(User mode). If you press MODE SW key while the "DC
SOURCE" LED is blinking, the KGP-2A/2B returns to User
mode.
Updating the Firmware
1) Connect the transceiver and KGP-2A/2B as shown in Fig-
ure 2 on page 5.
2) Double-click the "Fpro.exe" fi le (Ver. 3.01 or later) in the
folder where the KPG-73D is installed.
3) After the program starts, click the "Open a fi le" icon [
then select the new fi rmware data fi le.
4) Configure the KPG-2A/2B to enter the Programming
menu mode, then, click [Write] on the Fpro screen to
start revising the fi rmware. (The Fpro program fi rst eras-
es the fi rmware fi le on the KGP-2A/2B, then writes the
new fi rmware fi le.)
• While erasing the fi rmware, the "DC SOURCE" LED
blinks green and the "DATA" LED lights orange.
• While writing the firmware, the "DC SOURCE" and
"DATA" LEDs blink green.
• When the firmware is successfully revised, only the
"DC SOURCE" LED blinks green.
• When an error occurrs, the "DC SOURCE" LED blinks
green and the "DATA" LED blinks red. In this case,
switch the KGP-2A/2B OFF, then turn it ON again. The
"DC SOURCE" LED blinks green and the "DATA" LED
lights orange. Click [Write] on the Fpro screen to re-
start revising the fi rmware.
5) Click "OK" when the confi rmation dialog box appears.
Select [Exit] to exit the program.
6) Turn the KGP-2A/2B OFF and then back ON to return to
User mode.
MSK Modulation Adjustment
Adjust deviation as follows: Wide: 3kHz and Narrow:
1.5kHz.
1) Connect a transceiver and a PC to the KGP-2A/2B (Figure
2 on page 5). After confi guring the KGP-2A/2B to enter
the Programming menu mode, select "Test Mode" from
"Program" on the FPU (KPG-73D) menu.
ADJUSTMENT
GPS LED (KGP-2A only)
MODE SW
GPS
2) Measure the KGP-2A/2B DO voltage (DO: CN1 pin 5)
with AF-VTVM and adjust the "Output Level" DIGIT
value according to the table 1 on the "MSK" adjustment
screen.
3) When you click on "OK" on the PC screen, the adjust-
ment value is written into the KGP-2A/2B memories.
MSK Detection Input Level Adjustment
Set the input voltage at pin 2 of the CODEC IC (IC22) of
the KGP-2A/2B to 1000mVp-p.
1) Adjust the SSG level as shown below. Then connect the
output to the transceiver.
Frequency : Same frequency that the transceiver is re-
ceiving.
Modulation Frequency : 1200Hz (or 1000Hz)
Frequency Deviation : 3kHz (Wide), 1.5kHz (Narrow)
Output Level : –53dBm (60dBµ)
2) Measure the KGP-2A/2B DI voltage (DI: CN1 pin 3, trans-
ceiver detection output voltage) with a AF-VTVM.
3) Set the "Input Level" DIGIT value according to the table
2 on the "MSK" adjustment screen in "Test Mode" so
that the measured voltage (mVrms) is the CODEC IC in-
put voltage (1000mVp-p).
4) When you click on "OK" on the PC screen, the adjust-
ment value is written into the KGP-2A/2B memories.
Table 1 DO output level vs DIGIT value
240
220
200
],
180
160
140
120
100
80
60
40
20
20
10
0
50 200
DO output level (mVrms)
Table 2 DI input level vs DIGIT value
150
145
140
130
120
110
100
90
80
70
60
59
50
40
30
20
10
0
50 200
KGP-2A/2B
240
220
200
180
160
140
120
100
80
60
40
400
600
800
1000 1200
29
20
15 12
10 9
8
7
7
6 6
400
600
800
1000 1200
DI input level (mVrms)
7
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