Kenwood TK-7180 Service Manual page 53

Pin No. Name
4 TXD1 Serial data output / PTT output (Scrambler board)
Output : L≤0.45V, H≥4.7V/25kΩ load
5 CLK Serial clock output
6 OPT4 VGS enable output. Option boad I/F 4.
Output : L≤0.45V, H≥4.7V/25kΩ load
7 USEL UART speed select output. L : 19200bps fixed
8 OPT5 VGS reset signal output. Option boad I/F 5.
Output : L≤0.45V, H≥4.7V/25kΩ load
9 DGND Ground
10 AGND Ground
11 AI VGS audio input. Zin≥10kΩ, 1Vp-p max,
Input Voltage : 0V~5.0V
12 AO VGS audio output. Zo≤10kΩ
13 AGND Ground
14 5E 5V power supply output. 78mA max.
15 STON Side tone input. 1kHz, 5Vp-p
16 DTI Data signal input.
Zin≥22kΩ, 600± 200mVp-p
17 TCTL Speaker mute signal input.
Input : L≤1.0V, H≥4.0V, Input voltage : 0V~5.0V
18 NC No connection
19 AUDIH MIC mute signal input
20 OPT2 Option boad I/F 2.
Output : L≤0.45V, H≥4.7V/25kΩ load
Input : L≤1.0V, H≥4.0V, Input voltage : 0V~5.0V
21 TXO MIC signal output (AC coupled) before pre-
emphasis. Zo>2.2kΩ, 130± 50mVp-p typ.
22 RXEO Audio signal output (DC coupled) after de-
emphasis. Zo>30kΩ, 1± 0.3Vp-p typ.
23 RXEI Audio signal input (DC coupled) after de-
emphasis. Zin>15kΩ, 1± 0.3Vp-p typ.
24 TXI MIC signal input (AC coupled) before pre-
emphasis. Zin>22kΩ, 500± 50mVp-p typ.
25 OPT6 Option boad I/F 6.
Output : L≤0.45V, H≥4.7V/25kΩ load
26 8C Power input after power switch.
8.0V typ, 100mA max.
CN427 (to TX-RX unit A/3 CN701)
1 NC No connection
2 SB Power output after power switch
3 SB Power output after power switch
4 SB Power output after power switch
5 SB Power output after power switch
6 SB Power output after power switch
7 SB Power output after power switch
TERMINAL FUNCTION
Description
TK-7180/7189
Pin No. Name
8 AFO RX filtered audio output
9 DI Data signal input
10 5C 5V
11 GND Ground
12 DEO Detected signal output
13 MI2 External MIC input
14 ME MIC ground
15 GND Ground
16 RXD1 Serial data input 1
17 AUXO2 AUX output 2
18 TXD1 Serial data output 1
19 AUXO1 AUX output 1
20 AUXIO9 AUX input/output 9
21 AUXIO5 AUX input/output 5
22 AUXIO8 AUX input/output 8
23 AUXIO4 AUX input/output 4
24 TXD2 Serial data output 2
25 AUXIO3 AUX input/output 3
26 RXD2 Serial data input 2
27 AUXIO2 AUX input/output 2
28 AUXIO1 AUX input/output 1
29 AUXIO7 AUX input/output 7
30 AUXIO6 AUX input/output 6
CN428
1 SB Power output of switched power supply
2 SPI Speaker output
3 SPO Speaker input
4 PA Control signal output of PA function
5 HOR Control signal output of Horn alert function
6 GND Ground
CN429 (to Display unit CN902)
1 (DM) Reserve
2 GND Ground
3 RXD Serial data signal input
4 TXD Serial data signal output
5 NC No connection
6 5C 5V output
7 SHIFT/MODEL Control signal output of beat-shift function
8 (CLK) Reserve
9 (LCDDO) Reserve
10 (LCDDI) Reserve
11 (LCDRST) Reserve
12 RST2 Reset signal output
13 PSENS Detection signal input of display unit
14 GND Ground
Description
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