22
TK-780/H
INSTALLATION
Connector
Pin
Pin
I/O
Function
No.
No.
name
8
SQ
O
Squelch signal output. Signal logic
type can select “Carrier operate
relay” or “Tone operate relay”.
Active logic level or type can select
in the KPG-49D.
CN2
1
AM
I
Audio mute signal input.
LOK
O
Access logic signal output. Active
level or type can be selectable in the
KPG-49D.
2
MM
I
MIC mute input.
3
DTC
I
Data control channel signal input.
Data channel : L, Normal channel : H
TXS
O
Signal indicating whether the trans-
ceiver is transmitting or not.
TX : H, Another : L
FSW
I
Foot switch signal input.
Foot sw on : L, Foot sw off : H
LOK
O
Access logic signal output.
Active level or type can be
selectable in the KPG-49D.
CN3
1
HOR
O
Horn alert signal output. Signal
output for horn relay drive (open
collector). L level during horn drive :
Max. sink current 100mA.
2
E
–
Earth.
3
SB
O
Power output after power switch
(DC 13.6V
±
15%, 0.75A max.).
CN4
1
LOK
O
Access logic signal output.
Active level or type can be
selectable in the KPG-49D.
2
RXD1
I
Serial data input 1.
“COM1” port must be select “REM”
/ “DATA” / “GPS” / “DATA+GPS”
function in the KPG-49D.
3
TXD1
O
Serial data output 1.
“COM1” port must be select “REM”
/ “DATA” / “GPS” / “DATA+GPS”
function in the KPG-49D.
CN5
1
PA
O
Relay for PA function in KAP-1
control signal. PA on : H, PA off : L
2
SPO
O
Audio signal input from KAP-1.
3
SPI
I
Audio signal output to KAP-1.
CN6
1
SP
O
Output for internal/external speaker.
2
E
–
Earth.
3. Optional Board Terminal
Terminal is for mounting the option board are provided at
the TX-RX unit (A/2) and TX-RX unit (B/2). The table below
shows the correspondence between the board and termi-
nals. Disconnect R529 and R571 in TX-RX unit (B/2) when
the scrambler board is attached.
The table below shown the differences between the
schematic terminals and the PC board terminals.
Schematic diagram
PC board view
Name
I/O
Function
Name
Unit
SB
–
Switched B+, DC 13.6V
SB
TX-RX (A/2)
output. Maximum 0.75A
5C
–
5C
5C
TX-RX (A/2)
GND
–
Earth
E
TX-RX (A/2)
DEO
O
Detect signal output (Output
DEO
TX-RX (A/2)
level : 250mVrms; standard
modulation)
RXAI
I
RX audio input
RXAI
TX-RX (B/2)
RXAO
O
RX audio output
RXAO TX-RX (B/2)
TXAI
I
TX audio input
TXAI
TX-RX (B/2)
TXAO
O
TX audio output
TXAO
TX-RX (B/2)
LOK
O
Access logic signal output.
LOK
TX-RX (A/2)
Active level or type can be
selectable in the KPG-49D.
OPT
O
Option board select. Please
OP
TX-RX (A/2)
(EMG)
select option board type in the
KPG-49D.
OP1
O
Option code 1 (for voice
C1
TX-RX (A/2)
scrambler code 1)
OP2
O
Option code 1 (for voice
C2
TX-RX (A/2)
scrambler code 2)
OP3
O
Option code 1 (for voice
C3
TX-RX (A/2)
scrambler code 3)
OP4
O
Option code 1 (for voice
C4
TX-RX (A/2)
scrambler code 4)
SQ
O
Squelch signal output. Signal
SQ
TX-RX (A/2)
logic type can select “Carrier
operate relay” or “Tone operate
relay”. Active logic level or type
can select in the KPG-49D.
TXD1
O
Serial data output 1
TD1
TX-RX (A/2)
RXD1
I
Serial data input 1
RD1
TX-RX (A/2)
TXD2
O
Serial data output 2
TD2
TX-RX (A/2)
RXD2
I
Serial data input 2
RD2
TX-RX (A/2)
RSSI
O
Receive signal strength indication
RSSI
TX-RX (A/2)
PTT
I
PTT
PTT
TX-RX (B/2)
MPTT
I
MIC PTT
MPTT TX-RX (B/2)
FSW
I
Foot switch input
FW
TX-RX (A/2)
ST
I
Side-tone input
ST
TX-RX (A/2)
