Patton electronics 2086 Series User Manual page 3

2.0 GENERAL INFORMATION
Thank you for your purchase of this Patton Electronics product.
This product has been thoroughly inspected and tested and is warrant-
ed for One Year parts and labor. If any questions or problems arise
during installation or use of this product, please do not hesitate to con-
tact Patton Electronics Technical Support at (301) 975-1007.
2.1 FEATURES
• Operates asynchronously, point to point or multipoint,
over 2 or 4 wires
• Up to 32 multipoint device drops in a polling environment
• Data rates to 115.2 Kbps
• Passes transmit & receive data
• Operates off 5V power supply
• Operates without "echo"
• Driver controlled as "constantly on", "controlled by RTS", or
"controlled by DTR"
• Compact size ( 3.8" x 2.10" x 0.8")
• Twisted pair connection via strain relief, RJ-11 or RJ-45
• 2500 Vrms Optical Isolation
2.2 DESCRIPTION
The Model 2086 Series High Speed RS-232 to RS-485 Interface
Converter provides exceptional versatility in a compact package. The
Model 2086 Series supports asynchronous RS-232 data rates to 115.2
Kbps over one or two unconditioned twisted pair.
The Model 2086 Series can handle up to 32 terminal drops in a
multipoint polling environment. Carrier may be set to "constantly on" or
"controlled by RTS", or "controlled by DTR" and the unit operates with-
out "echo".
The Model 2086 Series is equipped with a DB-25 for the RS-232
connection. Options for twisted pair connection include RJ-11, RJ-45,
or Terminal Block. 2500Vrms optical isolators provide isolation
between the RS-232 and RS-485 interfaces.
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3.0 CONFIGURATION
The Model 2086 Series is configured using a four position DIP
switch and two headers. Figure 1 (below) shows the location of the DIP
switch and the two headers on the board.
DIP SWITCH
ON
1 2 3 4
OFF
Power
Figure 1. Top View of Model 2086 Series board, showing Dip switch and jumpers
3.1 DIP SWITCH CONFIGURATION
The DIP switches control the transmit/receive signals on the Model
2086 Series. The table below shows the default configuration of the
switches. Following the default table is a chart showing the different
switch and jumper combinations that the Model 2086 Series has to
offer. Also included in this section is a description of the switches.
DIP SWITCH DEFAULT SETTING TABLE
Position Function
S1 RTS Control
S2 DTR Control
S3 Reserved
S4 Transmitter Control
JP4
A
B
A
B
JP3
Default
Switch Function
no RTS control
off
of transmitter
off no DTR control
off n/a
Constantly ON
ON
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