Nokia of America Corporation BBTRX-09 Benutzerhandbuch
Document Title
PAGE: 8
700MHz TRDU B12 User Manual
DATE: 11-30-2012
4.1.4 DC Power Connector
DC Power Connector: Mini Fit Junior
PIN #
PIN Name
Function
1
+24V
+24V DC supply input
2
+24V RTN
+24V DC supply return
4.1.5 AISG Connector
8-pin AISG
PIN #
Designation
Max Current
Capability
Current
Clamp
Additional Notes / Requirements
1
+12 V DC Nominal
1.0 A
1.0 A
RRH shall monitor and report current over CPRI.
2
not used
Not used, not connected
3
RS485 B
4
RS485 GND
RS485 ground, isolated from DC Return and Ground
5
RS485 A
6
+24V Nominal
850 mA
850 mA
RRH monitor and report current over CPRI
7
DC Return
8
N/C
Not used, not connected
4.1.6 I2C Connector
8-pin RJ-45 style connector
PIN #
Designation
Max Current
Capability
Current
Clamp
Description
Additional Notes/ Requirements
1
+24V_FL_1
*
+24V pin 1 (power for
external filter)
external filter)
RRH reports current over CPRI (current
combined with Pin 2) Regulated supply.
Not active until 100ms to 200ms after
Pin 7 is pulled down through resistor
(between 1K and 10Kohm) to ground.
combined with Pin 2) Regulated supply.
Not active until 100ms to 200ms after
Pin 7 is pulled down through resistor
(between 1K and 10Kohm) to ground.
2
+24V_FL_2
*
+24V pin 2 (power for
external filter)
external filter)
Same as Pin 1. Common internal
source for Pin 1 & 2 is acceptable.
source for Pin 1 & 2 is acceptable.
3
GND
4
GND
5
I2C_SDA
Serial Data I/O (I2C)
4.7k ohm pull up resistor to 3.3V
6
GND
7
CTL_24V
Control pin for +24V
Pull down through 1kohm (or lower)
resistance to enable 24V on pins 1 & 2.
resistance to enable 24V on pins 1 & 2.
8
I2C_SCL
Serial Clock (I2C)
Using pull-up resistors, pulled up to
3.3V.
3.3V.