Patton electronic 2450 사용자 설명서
2.0 GENERAL INFORMATION
Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected by Patton's qualified
technicians. If any questions or problems arise during installation or
use of this product, please do not hesitate to contact Patton Electronics
Technical Support at (301) 975-1007.
technicians. If any questions or problems arise during installation or
use of this product, please do not hesitate to contact Patton Electronics
Technical Support at (301) 975-1007.
2.1 FEATURES
• Synchronous data rates of 56 or 64 Kbps
• Full duplex communication over two dedicated twisted pairs
• Supports distances to 3.4 miles over 26 AWG wire
• Selectable internal, external or network rcv/recover clock options
• Built-in V.54 loopback tests and V.52 BER test patterns
• Works with 56 Kbps DDS, 64 Kbps Clear Channel, or private
twisted pair circuits
• Switchable Circuit Assurance feature
• Externally accessible configuration switches
• Six front panel LEDs monitor communication and test status
• RJ-48S jack provided for line connection
• RS-232 & RS-422/530 versions have DB-25 connector
• V.35 version has either DB-25 or M/34 connector
• Ultra-compact enclosure fits in tight spaces
2.2 DESCRIPTION
The Model 2450 DDS & Clear Channel CSU/DSU is a standalone ,
AC powered CSU/DSU designed for 4-wire, full duplex communications
over dedicated twisted-pair. Synchronous data rates of 56 and 64 Kbps
are supported, at distances up to 3.4 miles. The Model 2450 provides
selectable timing options of internal, external or network receive-
recovered clock. A circuit assurance feature is also provided.
over dedicated twisted-pair. Synchronous data rates of 56 and 64 Kbps
are supported, at distances up to 3.4 miles. The Model 2450 provides
selectable timing options of internal, external or network receive-
recovered clock. A circuit assurance feature is also provided.
For user convenience, the Model 2450’s DIP switches are
externally accessible, so there is no need to open the case to configure
the unit. The Model 2450’s built-in V.54 loopback test modes and V.52
BER test patterns are accessed using two front panel switches. Six
front panel LEDs monitor test modes and communication status. Line
connections are facilitated by a modular RJ-48S jack on the rear of the
unit.
the unit. The Model 2450’s built-in V.54 loopback test modes and V.52
BER test patterns are accessed using two front panel switches. Six
front panel LEDs monitor test modes and communication status. Line
connections are facilitated by a modular RJ-48S jack on the rear of the
unit.
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3.0 CONFIGURATION
The Model 2450 is easy to install and is ruggedly designed for
excellent reliability: just set it and forget it. The following instructions
will help you set up and install the Model 2450 properly.
will help you set up and install the Model 2450 properly.
3.1 CONFIGURATION SWITCHES
The Model 2450 uses a mini DIP switch package that allows
configuration to a wide range of applications. This DIP switch is
externally accessible from the underside of the Model 2450 (see Figure
1, below), therefore you do not need to open the Model 2450's case
during configuration.
externally accessible from the underside of the Model 2450 (see Figure
1, below), therefore you do not need to open the Model 2450's case
during configuration.
3.2 CONFIGURATION SWITCH SET “S1”
The switches shown in Figure 2 below and on DIP switch S1 control
clock mode, circuit assurance, RTS, data rate and test loop functions.
Following Figure 2 are factory default settings and detailed switch
descriptions for each switch.
Following Figure 2 are factory default settings and detailed switch
descriptions for each switch.
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Figure 2. Close-up of DIP switches showing “ON” and “OFF” positions
1
2
3
4
5
6
7
8
ON
OFF
ON
1
2
3
4
5
6
7
8
ON
REAR
FRONT
Figure 1. Underside of Model 2450, showing location of DIP switches
S1