Verilink 2010 (34-00204) Product Manual Bedienungsanleitung PDF herunterladen (Seite 11)

2-4 Installation 2010 CSU

2.6 DTE Connection

The DTE connection is provided on the rear panel (refer to

Figure 2-2 on page 2-3). The equipment side DTE interface

of the CSU is a DSX interface. The DTE line build out level

should be set as instructed in Section 2.5.2 on page 2-2.

The DTE physical interface for both the stand-alone unit

and the chassis mounted unit is a standard RJ48C 8-pin

modular jack. A DB15 backplane is also an option for the

network and DTE interfaces. The pinout assignments are

shown in the following table:

2.7 Network Connection

The network side of the CSU is referred to as the network

interface. This interface contains an ALBO to allow the unit

to be located a substantial distance away from the telco net-

work interface (receive signal level down to -27 dB).

The network interface line build out (LBO) levels should be

adjusted as instructed in Section 2.5.2 on page 2-2. The

maximum suggested cable lengths for units connected to the

network are listed in the following table.

Calculations are based on a cable temperature of 70°F, 0.083

uF/mile capacitance, a 27 dB loss, and a 100 Ω, non-loaded,

twisted pair cable; PIC refers to Plastic Insulated Cable.

The network physical interface for both the stand-alone unit

and the chassis mounted unit is a standard RJ48C, 8-pin

modular jack. A DB15 backplane is also an option for the

network and DTE interfaces. The pinout assignments are

shown in the following table:

Cable Type Loss per 1000' Max. Length

26 gauge PIC 6.8 dB 4,400 ft

24 gauge PIC 5.4 dB 5,500 ft

22 gauge PIC 4.2 dB 7,100 ft

19 gauge PIC 3.0 dB 10,000 ft

Pin RJ48 Interface

1 Data Out

2 Data Out

3/6 Not Used

4 Data In

5 Data In

7/8 Chassis Ground

Pin DB15 Interface

1 Data In

2 Frame Ground

3 Data Out

4 Frame Ground

9 Data In

11 Data Out

Network Disconnection

: In accordance with FCC Part

68.218(b), the user must notify the telephone company prior

to disconnecting the CSU.

2.8 Alarm Connection

A rear panel terminal strip provides connections for the

alarm leads. Alarm relay contacts are provided (with the

optional alarm card) to permit connection to a remote indi-

cating device. The connection is made on pins 5 and 6 as

shown below in Table 2 - 3. Pin 5 is configured to operate in

a ‘normally

open’ or ‘normally closed’ mode, depending on

the setting of the alarm relay jumper.

Table 2-3 Power & Alarm Connector

2.9 Power Connection

The 2010 is designed to operate from either a -24 VDC

source (± 3 V, 80 mA) or from a -48 VDC source (± 6 V, 45

mA). The unit will operate over a voltage input range of -20

to -55 VDC. The chassis module of the 2010 unit obtains its

power from the 12-position shelf wiring connections.

Connections are made on the rear panel power and alarm

terminal strip. All terminal strip connections are made with

20-gauge stranded (or similar) wire. The contacts are rated

at 0.6 Amp AC or 2.0 Amp DC.

Pin Description

1 48 VDC return

2 Signal Ground

3 -48 VDC

4 Frame Ground

5 Alarm Contact

6 Alarm Common

Pin RJ48 Interface

1 Data In

2 Data In

3/6 Not Used

4 Data Out

5 Data Out

7/8 Chassis Ground

Pin DB15 Interface

1 Data Out

2 Not Used

3 Data In

4 Not Used

9 Data Out

11 Data In

1 2 ... 6 7 8 9 10 11 12 13 14 15

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