Kenwood TK-2180 Service Manual page 40

TK-2180
Pin No. Name I/O
1 OPT1 I/O Option boad I/F 1
Output : L ≤ 0.45V, H ≥ 4.7V/25kΩ load
Input : L ≤ 1.0V, H ≥ 4.0V, Input voltage : 0V~5.0V
2 OPT3 I/O Option boad I/F 3
Output : L ≤ 0.45V, H ≥ 4.7V/25kΩ load
Input : L ≤ 1.0V, H ≥ 4.0V, Input voltage : 0V~5.0V
3 RXD1 I Serial data input
Input : L ≤ 1.0V, H ≥ 4.0V, Input voltage : 0V~5.0V
4 TXD1 O Serial data output / PTT signal output (SC20-460)
Output : L ≤ 0.45V, H ≥ 4.7V/25kΩ load
5 NC -
6 OPT4 O Option boad I/F 4
Output : L ≤ 0.45V, H ≥ 4.7V/25kΩ load
7 USEL O UART speed select output
8 OPT5 O Option boad I/F 5
Output : L ≤ 0.45V, H ≥ 4.7V/25kΩ load
9 DGND -
10 AGND -
11 AI I VGS audio input
Zin ≥ 10kΩ, 1Vp-p max, Input voltage : 0V~5.0V
12 AO O VGS audio output
13 AGND -
14 5A O 5V power supply output
15 STON I Side tone input
16 DI/ANI I Data signal input
17 TCONT I Speaker mute signal input
Input : L ≤ 1.0V, H ≥ 4.0V, Input voltage : 0V~5.0V
18 MAN DOWN O Man down output
Output : L ≤ 0.45V, H ≥ 4.7V/25kΩ load
19 INH O MIC mute signal input
20 OPT2 I/O 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 O MIC signal output (AC coupled) before
pre-emphasis
22 RXEO O Audio signal output (DC coupled) after
de-emphasis
23 RXEI I Audio signal input (DC coupled) after
de-emphasis
40
TERMINAL FUNCTION
Function
CN600
L : 19200bps fixed
GND
GND
Zo ≥ 10kΩ
GND
78mA max
1kHz, 5Vp-p
Zin ≥ 22kΩ, 600±200mVp-p
ZL ≥ 22kΩ, 130± 50mVp-p
ZL ≥ 30kΩ, 1± 0.3Vp-p
Zin ≥ 15kΩ, 1± 0.3Vp-p
Pin No. Name I/O
24 TXI I MIC signal input (AC coupled) before
pre-emphasis
25 OPT6 O Option boad I/F 6
Output : L ≤ 0.45V, H ≥ 4.7V/25kΩ load
26 SB2 I Power input after power switch
7.5V typ, 100mA max
CN602
1 NC - Non connection
2 RXD I Serial data input
3 TXD O Serial data output
4 5CNS O 5V output
5 E - GND
6 OPT I/O Option interface I/O
7 PF I Programmable function key input
8 PTT I External PTT input
9 ME - External microphone ground
10 EMC I External microphone input
11 MSW I EXT/INT MIC switch input
12 SP- O BTL output + for external speaker
13 SP+ O BTL output - for external speaker
14 SSW I EXT/INT SP switch input
Universal connector
Pin No. Name I/O
1 SSW I Ext/Int speaker switch input
L : External speaker ON, H : Internal
speaker ON, Input voltage : 0V~5.0V
2 SP+ O BTL output + for external speaker
Audio output power at volume max
(1kHz, Batt =7.5V)
1.3± 0.5W typ (at RL=8Ω)
0.9± 0.5W typ (at RL=16Ω)
3 SP- O BTL output - for external speaker
Audio output power at volume max
(1kHz, Batt =7.5V)
1.3± 0.5W typ (at RL=8Ω)
0.9± 0.5W typ (at RL=16Ω)
4 MSW I Ext/Int MIC switch Input
L : External Mic ON, H : Internal Mic ON
Input voltage : 0V~5.0V
Function
Zin ≥ 22kΩ, 130±50mVp-p
Function