ADC Dual Inline Tower Mounted Amplifier System Manual Do Utilizador

ADCP-75-214 • Issue 2 • September 2006

Page 20
© 2006, ADC Telecommunications, Inc.

 provides typical specifications for the PDU.

Electrical

Input voltage range

20–56VDC positive/negative ground 
(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

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

Molex Mini-Fit 39-30-3035

Indicators

Two color LED (3 pcs) (green and yellow) 
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)

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).

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.

Resistance between RS485 A and 
RS485 B

> 1k Ohm

Resistance between RS485 A or 
RS485 B and DC return / RS485 GND

> 1k Ohm

Capacitance between RS485 A or 
RS485 B

< 1nF

Capacitance between RS485 A or 
RS485 B and DC/RS485 GND

< 1nF