Kenwood TK-7180H Service Manual page 72

Name
AUDIH MIC mute signal input. L : Mute
(AUDIO INHIB)
OPT2 Emergency signal input. Active low.
(AUX I/O) L≤1.0V, H≥ : 4.0V, Input voltage 0V~5.0V
STON Side tone input. 1kHz, 5Vp-p
(SIDE TONE)
to Scrambler board
GND (GND) Ground
TXD1 PTT signal output. L : TX, H : Not TX
(PTT) L≤0.45V, H≥4.7V/25kΩ load
(PTT signal input) Active low.
L≤1.0V, H≥4.0V, Input voltage : 0V~5.0V
OPT1 (CODE Scramble code signal output 1.
SELECT1) L≤0.45V, H≥4.7V/25kΩ load
OPT3 (CODE Scramble code signal output 2.
SELECT2) L≤0.45V, H≥4.7V/25kΩ load
OPT4 Echo PTT signal output. L : TX, H : Not TX
(ECHO PTT) L≤0.45V, H≥4.7V/25kΩ load
OPT5 (CODE Scramble code signal output 4.
SELECT8) L≤0.45V, H≥4.7V/25kΩ load
TXO MIC signal output (AC coupled) before
(TX OUT) pre-emphasis. Zo>2.2kΩ, 130± 50mVp-p typ.
(Standard modulation)
TERMINAL FUNCTION
Description
TK-7180H/7182H
Name
OPT2 Scrambler control signal output.
(SCRAMBLE) L : ON, H : OFF. L≤0.45V, H≥4.7V/25kΩ load
RXEO Audio signal output (DC coupled) after
(RX OUT) de-emphasis. Zo>30kΩ, 1± 0.3Vp-p typ.
(Standard modulation)
TXI MIC signal input (AC coupled) before
(TX IN) pre-emphasis. Zin>2.2kΩ, 130± 50mVp-p typ.
(Standard modulation)
RXEI Audio signal input (DC coupled) after
(RX IN) de-emphasis. Zin>15kΩ, 1± 0.3Vp-p typ.
(Standard modulation)
OPT6 (CODE Scramble code signal output 3.
SELECT4) L≤0.45V, H≥4.7V/25kΩ load
8C (+V) 8V AVR output. 8.0V typ, 100mA max.
to GPS receiver
GND (GND) Ground
1
RXD1* Data output
(DATA OUT1)
1
RXD2* Data output
(DATA OUT1)
5E (+5V) 5V
*1 : Depending on the connected optional accessory, the DATA
OUT1 may connect to either RXD1 or RXD2.
Description
71