Kenwood NEXEDGE NX-720, Service Manual, Page: 92 / 127

NX-720
92
TERMINAL FUNCTION
8pin Modular Connector Specifi cation
Pin
No. Pin
Name
I/O
Signal
Type
Description/port type Item and Condition Min Typ Max Unit Note
1 MBL O Digital CMOS output
VOH 4.2 5.2 V
VOL - 0.8 V
2 SB O Power Switched B output
Output Voltage
This parameter depends on Bat-
tery voltage.
Output Current 200 mA
3 GND - GND Ground Allowable current value 200 mA
4
PTT I Digital
CMOS input
(Pull Up: 5.0V/10k

)
VIH 4.2 5.0 V
VIL 0 0.8 V
TXD O Digital
CMOS 3-State Buffer
output
(Pull Up: 5.0V/10k

)
VOH 4.2 5.2 V
VOL - 0.8 V
Baud rate - 1 9 200 bps
5 ME - GND MIC Ground MIC Ground
This is ground port for Micro-
phone.
6 MIC I Analog Audio input
Output Amplitude
(1kHz, 60% deviation)
- 5 - mVrms
Coupling Capacitor - 10 - uF
Input impedance - 600 -

Allowable Frequency 300 3000 Hz
7
HOOK/
RXD
I Digital
DTC144EE input
(Pull Up: 5.0V/4.7k

)
VIH 4.2 5.0 V
VIL 0 0.8 V
Baud rate - 115200 bps
8 DM
I Digital
CMOS input/output
(Pull Up: 5.0V/47k

)
VIH 4.2 5.0 V
VIL 0 0.8 V
O Digital VOL - 0.8 V
15pin D-sub Connector Specifi cation
Pin
No. Pin
Name
I/O
Signal
Type
Description Item and Condition Min Typ Max Unit Note
1 SB - Power Switched B output
Voltage
This parameter depends on Bat-
tery voltage.
Supply Current - - 2.0 A
(with KCT-60) - - 0.5 A
2 IGN I Digital Ignition sense input Input Voltage 10.8 - 16 V
3 SP2/PA O Analog Speaker output
Audio output 3 4 - W
at 4

, 10% Dis-
tortion
Coupling Capacitor - 330 - uF
RL 4 - -

Allowable Frequency 300 - 3000 Hz