22
I2C over CAT5 Cable Diagram
CONNECTOR 2 DB9 male
CONNECTOR 1 DB9 male
1
2
3
4
5
6
7
8
9
1
2
3
4
6
7
8
9
5
CONNECTOR 1 CONNECTOR 2
PAIR #1 BLUE
pin 1
pin 1
pin 2
pin 2
pin 5
pin 5
pin 5
pin 5
PAIR #1 GREEN
PAIR #2 BLUE/ WHITE
PAIR #2 GREEN/WHITE
1. I2C data
2. I2C clock
3. RS232 TX
4. RS232 RX
5. GND
6. NC
7. NC
8. 7.5V DC in
9. NC
m802
RCU
DB9 pinout
m802
Preamplifier
DB9 pinout
UPPER CONNECTOR
1. I2C data
2. I2C clock
3. NC
4. NC
5. GND
6. NC
7. NC
8. NC
9. +5V
1. I2C data
2. I2C clock
3. RS232 TX
4. RS232 RX
5. GND
6. NC
7. RS232 RX GND
8. NC
9. +5V
m802
Preamplifier
DB9 pinout
LOWER CONNECTOR
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
DB9 connector Pinouts (m802 s
erial #’s
P802489 and below)
1
2
3
4
5
6
7
8
9
m802
DB9 pinout
upper and lower connector
preamplifier
1
2
3
4
5
6
7
8
9
Data
Clock
RS485 / Rs422 TX-
RS422 RX-
Chassis GND ( GND)
RS485 / RS422 TX+
RS485 / RS422 GND (GND-ISO)
RS422 RX+
+5V Power Supply Output (relative to
Chassis GND)
I C
I C
I C
2
2
2
1
2
3
4
5
6
7
8
9
m802
DB9 pinout
RCU
1
2
3
4
5
6
7
8
9
Data
Clock
RS485 / 422 TX-
RS422 RX-
GND
Rs485 / 422 TX+
GND
+8V Power Supply Input
RS422 RX+
I C
I C
2
2
RS485 DB9 connector Pinouts (m802 serial #’s P802490 and above)
H = HOT C = COLD G = GROUND
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
(ch2)
(ch3)
(ch4)
(ch5)
(ch6)
(ch7)
(ch8)
(ch1)
9
8
7
6
5
4
3
2
1
G C H G C H G C H G C H G C H G C H G C H G C H
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
(AES6)
(AES7)
(AES8)
(AES1)
(AES2)
(AES3)
(AES4)
(AES5)
9
8
7
6
5
4
3
2
1
G C H G C H G C H G C H G C H G C H G C H G C H
Analog pinout
AES-3 digital pinout
25 Pin D-sub Output Connector
H = HOT C = COLD G = GROUND
1
2
3
SHIELD
HOT
GND
(OPEN)
Unbalanced Output Cable Termination
1
1
CHANNEL #
SINGLE WIRE
2
2
3
3
4
4
5
6
7
8
AES1
AES2
AES3
AES4
1
2
3
4
5
6
7
8
AES5
AES6
AES7
AES8
CHANNEL #
DUAL WIRE
5
6
7
8
Digital Output Configuration
