Verilink 2010 (34-00204) Product Manual - Manual (Page 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