ADTRAN 12804108L1B Manual de instrucciones descargar pdf (Pagina 31)

TRACER 4108/4208 System Manual Section 3 Engineering Guidelines

T1 Connections (RJ-48C)

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

AT& T

standards.

Alarm Contacts (Plug-In Terminal Block)

Normally open (NO) and normally closed (NC) alarm contacts are provided on the rear panel of the

TRACER 4108/4208 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.

DC Power Connection (Plug-In Terminal Block)

The TRACER 4108/4208 can operate from a supply between 21 and 60 VDC, with either polarity

referenced to ground, and consumes less than 21 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 4108/4208 would draw

approximately 0.438 A (21 W/48 V).

The + terminal of the DC power connection must be connected to the most positive voltage rail, while the

– terminal must be connected to the most negative voltage rail. For example, a +24 V source should be

delivered to the TRACER 4108/4208 by connecting +24 V to the + terminal of the TRACER 4108/4208

power terminal block and ground (the most negative voltage) to the TRACER 4108/4208 – terminal.

Alternately, a -48V supply should be delivered to the TRACER 4108/4208 by connecting ground (the most

positive voltage) to the + terminal of the TRACER 4108/4208 power terminal block and -48 V to the –

terminal.

Table 6. T1 Interface Connector Pinout

PIN NAME DESCRIPTION

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 Receive data (tip) from the network

Table 7. Alarm Contact Connector Pinout

PIN NAME DESCRIPTION

1 COM Common Contact

2 NO Normally-Open Contact

3 NC Normally-Closed Contact

If the power supply voltages are incorrectly connected to the TRACER 4108/4208

system, the fuse will blow.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 59 60

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ADTRAN 12804108L1B Manual de instrucciones Pagina 31