Adtran TRC4208 Manuel D’Utilisation

TRACER 4208 System Manual

Section 3  Engineering Guidelines

612804208L1-1A

© 2003 ADTRAN, Inc.

31

The physical T1 interfaces are provided by eight RJ-48C jacks that comply with the applicable ANSI and 
AT&T

®

 standards.

Normally open (NO) and normally closed (NC) alarm contacts are provided on the rear panel of the 
TRACER 4208 system. In normal operation, the NC contact is electrically connected to the common 
contact (COM) and the NO contact is isolated. During an alarm condition, the NC contact becomes 
isolated and the NO is electrically connected to COM. This allows alarm conditions to be reported to 
external alarm monitoring systems.

The TRACER 4208 can operate from a supply between 21 and 60 VDC, with either polarity referenced to 
ground, and consumes less than 18 Watts (W). Power supplies should be able to provide up to 25 W at
the selected voltage. Current required (in Amps) is determined by dividing the power consumed (in Watts) 
by the applied voltage (in Volts). For example, at 48 V, TRACER 4208 would draw approximately 0.375 A 
(18 W/48 V).

The fuse holder, accessible from the rear panel of the TRACER 4208, accepts a generic 1 A, 250 V, 2-inch 
slow-blo fuse.

1

R

Transmit data (ring) towards the network

2

T

Transmit data (tip) towards the network

3, 6-8

UNUSED

—

4

R1

Receive data (ring) toward the network

5

T1

Transmit data (tip) from the network

1

COM

Common Contact

2

NO

Normally-Open Contact

3

NC

Normally-Closed Contact

1

+

Positive Lead (referenced to ground)

2

-

Negative Lead (referenced to ground)