2.0 GENERAL INFORMATION
Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected and tested and is
warranted for One Year parts and labor. If you have any questions
during installation or use of the Model 1205, contact Patton Electronics
Technical Support at
(301) 975-1007
.
2.1 FEATURES
•
V.35 (EIA-530) operation
•
Synchronous data rates from 32 to 144 Kbps
•
Host-to-host distances up to 300 feet
•
Constant or RTS controlled carrier selections
•
RTS-CTS delay options of 0mS, 7mS or 53mS
•
Power derived from V.35 interface
•
Internal or external clocking
•
All necessary data, clocking and control signals supported
•
Made in the U.S.A.
2.2 DESCRIPTION
The Patton Model 1205 synchronous modem eliminator
lets
two synchronous 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 1205 can be configured to emulate dial-up or leased line
service. Maximum distance between the connected hosts is 300 feet.
Timing can be set for internal or external clock, and all necessary data,
clocking and control signals are supported.
The Model 1205 modem eliminator implements the V.35 electrical
interface on dual DB-25 or dual M/34 female connectors, according to
the EIA-530 Standard. Operating power for the Model 1205 is drawn
from the V.35 interfaces, so no AC power or batteries are required.
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3.0 CONFIGURATION
The Model 1205 is equipped with one internal four-position DIP
switch and six internal jumpers that allow configuration to a wide range
of applications. This section describes all possible configuration
settings, including the factory default settings.
3.1 ACCESSING SWITCHES AND JUMPERS
All switches and jumpers are located on the Model 1205 PC board.
To access the PC board, open the Model 1205 case by inserting a
small flat-blade screwdriver in the slot on either side of the case and
twisting gently. As Figure 1 (below) illustrates, the DIP switches are
located on the daughterboard and the jumpers are located on the main
PC board.
3.2 INTERNAL DIP SWITCH
The Model 1205 has one four-position DIP switch mounted on the
internal daughterboard. Figure 2 (below) shows the numbering of the
individual switches and their “ON/OFF” positions relative to the
daughterboard.
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Figure 1.
Model 1205 DIP Switch and Jumper Locations on PC Board
Figure 2.
Model 1205 DIP Switch Orientation on Internal Daughterboard
Switches
Jumpers
On
On
Off
Port
B
Port
A
Port
B
4
3
2
1
4 2 3 1
JP1
JP2
JP3