3.0 CONFIGURATION
This section describes the location and orientation of the Model
1206RC’s configuration switches and jumpers, and provides detailed
instructions for all possible settings.
The Model 1206RC uses a combination of DIP switches and
jumpers that allow configuration to an extremely wide range of
applications. Designed around a mid-plane architecture, the Model
1206RC incorporates both front and rear cards. Configuration of both
may be necessary. The switches/jumpers are accessible when the
cards are slid out of the rack chassis. Once configured, the Model
1206RC is designed to operate transparently, without need for frequent
re-configuration: just set it and forget it!
3.1 FUNCTION CARD CONFIGURATION
All switches and jumpers are located on the Model 1206RC’s PC
board. To access the PC board, loosen the two thumb screws on the
front panel and slide the card out of the chassis. As Figure 1 (below)
illustrates, the DIP switches are located on the “daughterboard” and the
jumpers are located on the main PC board.
3.1.1 FUNCTION CARD DIP SWITCH
The Model 1206RC has one four-position DIP switch mounted on
the daughterboard. Figure 2 (following page) shows the numbering of
the individual switches and their “ON/OFF” positions relative to the
daughterboard.
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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; [email protected] or
http://www.patton.com.
2.1 FEATURES
• X.21 operation
• Synchronous data rates from 32 to 144 Kbps
• Host-to-host distances up to 300 feet
• Internal, external or receive loopback clocking
• All necessary data, clocking and control signals supported
• Front panel LEDs show TD and CD activity for each port
• Two UD-26 connectors on rear interface card
• Switchable 120V or 240V power supply
• Mounts in Patton’s 16-slot rack chassis and 2/4/8-slot Cluster Boxes
2.2 DESCRIPTION
The Patton Model 1206RC synchronous X.21 modem
eliminator rack card
lets two synchronous X.21 hosts communicate
with each other in the same room for a fraction of the cost of a pair of
high speed modems. Supporting synchronous data rates of 32, 48, 56,
64, 72, 112, 128 and 144 Kbps, the Model 1206 can be configured for
internal, external or receive loopback clock. Maximum distance
between the connected hosts is 300 feet, and all necessary data,
clocking and control signals are supported.
The Model 1206RC is designed to mount in Patton’s 2U high, 16-
slot rack chassis, as well as Patton’s 2/4/8-slot desktop Cluster Boxes.
This rack chassis and cluster boxes feature a switchable 120/240 VAC
power supply (optional 48 VDC) and hot swappable function/interface
cards mounted in a mid-plane architecture. Front panel LEDs show TD
and CD activity for both ports, as well as power. The rear interface card
has two UD-26 connectors for patching to the host devices.
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Figure 1.
Model 1206RC board, showing location of switches/jumpers
DIP Switches
Jumpers
