Kenwood NXR-1800 Service Manual page 48

Pin Pin
I/O Signal Type
No. Name
9 TA I Analog
10 RD O Analog
11 RA O Analog
12 RXG - GND
13 NC - -
14 AO1 O Digital
15 EMON I Digital
16 EPTT I Digital
17 SC O Digital
18 AO2 O Digital
19 TXG - GND
20 IO1 I Digital
O
21 IO2 I Digital
O
1-48 (No.RA094<Rev.002>)
Modifi
Function
cation
No TX Audio Input 1kHz/60%Dev.
(Voice) Input Max
=2.0Vrms
Input Impedance
No RX Data Output Output Voltage
(Signaling) Not /60%Dev.
Squelched
No RX Audio Output Output Voltage
(Voice) /60%Dev.
Squelched
No RX Signal -
Ground
No - -
No Auxiliary Output1 External Voltage
Open Collector
Allowable
Current
Yes Auxiliary Output1 PU Resistor
Open Collector
VOL(IO=0mA)
With PU
No External Monitor VIH
Switch
VIL
No External PTT VIH
Switch
VIL
No Squelch Control VOH
VOL
No Auxiliary Output2 External Voltage
Allowable
Current
Yes Auxiliary Output2 PU Resistor
Open Collector
VOL(IO=0mA)
With PU
No TX Signal -
Ground
No Programmable VIH
Function I/O1
VIL
Input Impedance
VOH(IO=0mA)
VOL(IO=0mA)
No Programmable VIH
Function I/O2
VIL
Input Impedance
VOH(IO=0mA)
VOL(IO=0mA)
Rating and Condition
Parameter Min Typ
270 280
600
75 80
380 400
- -
- -
4.7k 47k
0.7*V
CC
VSS
0.7*V
CC
VSS
VCC
4.7k 47k
- -
0.7*V
CC
VSS
47k
VCC
0.7*V
CC
VSS
47k
VCC
Note
Max Unit
290 mVrms NFW
WFM

600 PD to GND
85 mVrms Allowable Load
47k
420 mVrms Allowable Load
47k
-
-
16 V
200 mA

VCC 5V+/-3%
0.1 V
VCC V 47k PU to VCC
5V+/-3%
0.8 V
VCC V 47k PU to VCC
5V+/-3%
0.8 V
V Open Drain
47k PU to VCC
0.4 V
5V+/-3%
16 V
200 mA

VCC 5V+/-3%
0.1 V
- -
VCC V 47k PU to VCC
5V+/-3%
0.8 V

V Open Drain
47k PU to VCC
0.4 V
5V+/-3%
VCC V 47k PU to VCC
5V+/-3%
0.8 V

V Open Drain
47k PU to VCC
0.4 V