ADC ClearGain 1800 MHz and 2100 MHz User Manual
ADCP-75-214 • Issue 2 • September 2006
Page 20
© 2006, ADC Telecommunications, Inc.
© 2006, ADC Telecommunications, Inc.
5.3
PDU (Power Distribution Unit)
Table 4. Power Distribution Unit (PDU) Specifications
CATEGORY
PARAMETER
SPECIFICATION
Electrical
Input voltage range
20–56VDC positive/negative ground
(Input polarization protected)
(Input polarization protected)
Output voltage
15V, 4% (Over voltage protection)
Output voltage accuracy
4% in 20mA – 400mAMAX 10% in 1.5A
Output ripple
100mV pk – pk
PDU Inrush Current
ETS300132-2, Part 2
Short circuit protection
1500mA, 10%
Connector and
LED
LED
Outputs for TMA's
SMB connector Male (3 pcs)
Input connector
Molex Micro-fit 43045 - 0400
General alarm connector
Molex Mini-Fit 39-30-3035
Communications link between BTS
and RET
and RET
Molex Mini-Fit 39-30-3035
Indicators
Two color LED (3 pcs) (green and yellow)
Red LED 1 pcs
Red LED 1 pcs
Physical
Dimensions (W x H x D)
194.4 x 43.6 x 100.0 mm
(7.7 x 1.7 x 3.9 inches)
(7.7 x 1.7 x 3.9 inches)
Weight
0.5 Kg (1.2 lbs.)
Color
Gray Metallic
Communication
Pin Number
Signal
Comments
1
RS485 A
RET control command AISG Layer2. ISO/
IEC 8482:1993 (RS485).
IEC 8482:1993 (RS485).
2
RS485 B
3
RS485 GND
PDU only receives control command from BTS and modulates 2.176MHz Modem
Signal and transmit to TMA through SMB connector, and vice versa.
Signal and transmit to TMA through SMB connector, and vice versa.
Resistance between RS485 A and
RS485 B
RS485 B
> 1k Ohm
Resistance between RS485 A or
RS485 B and DC return / RS485 GND
RS485 B and DC return / RS485 GND
> 1k Ohm
Capacitance between RS485 A or
RS485 B
RS485 B
< 1nF
Capacitance between RS485 A or
RS485 B and DC/RS485 GND
RS485 B and DC/RS485 GND
< 1nF