Kenwood NXR-710 Service Manual page 57

Pin No. Name I/O
6 NC - No connection
7 RXASSIST I Assist voltage input
CN351 (To X57-794 CN203)
1 VO O VCO output
2 GND - Ground
TX VCO/PLL Unit (X58-5080-10)
Pin No. Name I/O
CN303 (To X57-794 CN609)
1 FIN I VCO input
2 SPSCLK0 I PLL clock input
3 /TXPCS I PLL chip select input
4 SPSD0 I PLL data input
5 33C I 3.3V power supply
6 50C I 5V power supply
7 LDT O PLL lock detect output
8 REF I 16.8MHz reference clock input
CN350 (To X57-794 CN605)
1 GND - Ground
2 TXVCOB I VCOB select
3 80C_1 I 8V power supply
4 TXVCOA I VCOA select
5 TX_CV O Control voltage output
6 MO I Modulation input
7 TXASSIST I Assist voltage input
CN351 (To X57-794 CN608)
1 VO O VCO output
2 GND - Ground
CONTROL I/O 25 pin D-sub Connector
Pin Pin Signal Modifi -
I/O
No. Name Type cation
1 NC - - Land short -
2 RXD2 I Digital
3 TXD2 O Digital
4 AI1 I Digital
5 AI2 I Digital
6 AI3 I Digital
7 DG - GND
8 TD I Analog
9 TA I Analog
10 RD O Analog
11 RA O Analog
TERMINAL FUNCTION
Function
Function
Description/ Port Type
Asynchronous Receive
No
Data
No Asynchronous Send Data
Programmable Function
No
Input 1/ CMOS
Programmable Function
No
Input 2/ CMOS
Programmable Function
No
Input 3/ CMOS
No Digital GND
No TX Data Input (signaling)
No TX Audio Input (voice)
RX Data Output (signaling)
No
Not Squelched
RX Audio Output (voice)
No
Squelched
Pin Pin Signal Modifi -
I/O
No. Name Type cation
12 RXG - GND
13 SPM I Digital
14 BER_CLK O Digital
15 EMON I Digital
16 EPTT I Digital
17 SC O Digital
18 BER_DAT O Digital
19 TXG - GND
20 IO1 I/O Digital
21 IO2 I/O Digital
22 IO3 I/O Digital
23 IO4 I/O Digital
24 IO5 I/O Digital
25 IO6 I/O Digital
TEST/SPKR 15 pin Connector
Pin Pin Signal Modifi -
I/O
No. Name Type cation
1 SB - Power
2 SB - Power
3 NC - -
4 GND - GND
5 GND - GND
6 SPG - GND
7 RD O Analog
8 RSSI O Analog
9 SPI I Analog
Default
10 AO1 O Digital
$R203=47k
D23=delete
Default
11 AO2 O Digital
$R202=47k
D29=delete
12 SPO O Analog
Default
13 AO3 O Digital
$R201=47k
D31=delete
Default
14 AO4 O Digital
$R200=47k
D35=delete
Default
15 AO5 O Digital
$R198=47k
D12=delete
NXR-710
Description/ Port Type
No RX Signal GND
No Speaker Mute/ CMOS
No for Bit Error Rate Clock
No External Monitor Switch
No External PTT Switch
No Squelch Control
No for Bit Error Rate Data
No TX Siganl GND
No Programmable Function I/O 1
No Programmable Function I/O 2
No Programmable Function I/O 3
No Programmable Function I/O 4
No Programmable Function I/O 5
No Programmable Function I/O 6
Description/ Port Type
No Power Supply
No Power Supply
No -
No Digital GND
No Digital GND
No Speaker GND
RX Data Output (signaling)
No
Not Squelched
No RSSI Output
No Internal Speaker Input
Auxiliary Output 1
Open collector
Auxiliary Output 1
Open collector with PU
Auxiliary Output 2
Open collector
Auxiliary Output 2
Open collector with PU
No External Speaker Output
Auxiliary Output 3
Open collector
Auxiliary Output 3
Open collector with PU
Auxiliary Output 4
Open collector
Auxiliary Output 4
Open collector with PU
Auxiliary Output 5
Open collector
Auxiliary Output 5
Open collector with PU
57