Kenwood TK-768 Service Manual page 55

TK:/68/H
TERMINAL FUNCTION
]N No. 'in No,Pin name
tlo
Function
]N No, Pin No. Pin name
r/o
Function
TX-RX UNIT (Al2l: TX-RX section
cN201
To
KAP-1
2
J
Lto
S P O
S P I
Relay for emergency function in KAp-1
control signal. Emergency on : ,'H,,,
Emergency off : "L"
Not used.
Not used.
c N 1
To
KCT-1 9
1
2
3
Á
5
b
I
l
I G N
D I
M E
M I
PTT
S O
D E O
AHK
I
I
I
VO
Detection signal output.
External HOOK signal input.
On hook : "1", Off hook : 'H"
lgnition input Íor KCT-18.
External modulation signal input.
M I C e a r t h .
Internal MIC signal output,
Externa MIC signal input
(Standard modulation at 600Ct, bmV).
External PTT signal input.
GND : TX, Open : RX
Not used.
J 1 EXT SP
a'l
Output for external speaker
@Wls%o distortion).
DC 13.6V
I
Power supply input (DC 1 3.6Vr'1 S% )
ANT
vo
Connect for ANT connector.
T X-RX U NIT (B/2) : Controlsection
cN40
To
TX-R)
sectr0
4
5
6
7
9
1 0
1 1
1
2
3
1 2
1 3
1 4
1 5
l o
1 l
1 B
1 9
2 0
a 1
2 2
23
24
2 5
2 6
E P
E N
APTT
E
E
M O
PSW
D E O
M M
D I
N C
AFO
8C
M E
M I
A H K
5 ó
S B
KEY
C K
DT
B U S Y
LD
E S
FSW
H N C
I
I
n
o
o
I
I
o
n
n
I
n
I
i
o
irt
o
I
Earth.
Modulation signal output.
Power switch control signal output.
Power switch on : 0V
Detection signal input.
MIC mute signal input.
External modulation signal input.
Not connection.
Audio signal output.
Common BV input.
MIC earth.
Internal MIC signal output.
External MIC signal input.
External HOOK signal input.
On hook : "1", OÍf hook : "H"
Power output after power swrtch.
( + 1 3 . 6 V t 1 5 7 o )
KEY signal output. TX : "H"
Clock output Íor PLUshiÍt register/D-A
converter.
Data output Íor PLUshift register/D-A
converter.
S-meter voltage input (Not use).
Lock detect input for PLL.
Lock : "H", Unlock : "1"
Enable output for shift register.
Foot switch signal input.
(for emergency mode)
"L" : Emergency mode entry
Horn control signal output.
Horn on : "H", Horn off : "L"
Enable output for PLL.
Enable output for D-A converter.
External PTT signal input.
Earth.
c N 2
TO
KCT-1 I
1
2
J
AM
M M
FSW
I
I
I
Audio mute signal input.
Mute : "H", Unmute : Open
MIC mute signal input.
Mute : "H", Unmute : Open
Foot switch signal rnput
(for emergency mode).
"L" : Emergency mode entry
cN4
To
KCT.1 9
o r
KAP-1 3
H O R
E
S B
o
n
Horn alert control signal output.
Signal output for horn relay drive
(open collector). "L" level during horn
drive : max. sink current 100mA.
Earth.
Power output aÍter power switch
(+1 3.6Vt 1 5olo, 1 A max.).
cN5
To
INT. SP
KCT-1 9
1
2
S P
E
o
Output for internal/external speaker.
Earth.
cN6
To
ContÍol
section
1
1
J
4
5
6
7
B
9
1 0
1 1
1 2
1 3
1 A
1 5
1 6
1 7
1 8
1 9
2 0
2 1
z z
23
24
25
26
E
M O
PSW
D E O
M M
D I
N C
AFO
BC
M E
M I
A H K
S B
S B
KEY
C K
DT
BUSY
LD
ES
FSW
E P
E N
APTT
H N C
;
I
,
t/o
n
I
I
I
o
c
Earth.
Modulation signal input.
Power switch control signal input.
Power switch on : 0V
Detection signal output.
MIC mute signal output.
External modulation signal output.
Not connection.
Audio signal input.
Common BV output.
MIC earth.
Internal MIC signal input.
External MIC signal output.
External HOOK signal output.
On hook : "1", Off hook : "H"
Power output after power switch.
( + 1 3 . 6 V t 1 5 7 o )
KEY signal input. TX : "H"
Clock input Íor PLUshift registeíD-A
converter.
Data input Íor PLL/shiÍt register/D-A
converter.
S-meter voltage output (Not use).
Lock detect output Íor PLL.
Lock : "H", Unlock : "1"
Enable input for shift register.
Foot switch signal output
(for emergency mode).
"L" : Emergency mode entry
Horn control signal input.
f'lorn on : "H", Horn off : "L"
Enable input for PLL.
Enable input Íor D-A converter.
External PTT signal output.
:arth.
J401
To
M t c
lack
1
2
A
5
6
S B
E
PTT
M E
M I
H K
o
VO
I
vo
Power output after power switch
( + 1 3 . 6 V 1 1 5 7 0 , 1 . 8 A m a x . ) .
Earth.
PTT signal input (GND : TX, Open : RX).
Serial data inpuVoutput.
MIC earth.
M I C s i g n a l i n p u t .
(Standard modulation at 600e, smv)
Hook signal input.
On hook : "L-, Off hook : "H
Serial data input/output.
V C O : S u b u n i t
C N 1
1
2
J
4
5
6
STR
VO
E
BV
M D
CV
o
n
;
I
o
DíRX VCO switch signal output.
VCO signal output.
Earth.
8V input for VCO.
Modulation signal input.
PLL lock voltage output.
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