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3.0 CONFIGURATION
This section describes the location and orientation of the Model
1140RC’s configuration switches and jumpers, and provides detailed
instructions for all possible settings.
The Model 1140RC 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
1140RC incorporates both front and rear cards. Configuration of both
may be necessary. The switches/jumpers are accessible when the
cards are removed from the rack chassis. Once configured, the Model
1140RC is designed to operate transparently, without need for frequent
re-configuration.
3.1 FRONT CARD CONFIGURATION
The Model 1140RC front card has two sets of eight switches (S1 &
S2), which are mounted on the PC board (Figure 1, below). These
configuration switches allow you to configure the Model 1140RC for a
wide range of applications. The ON/OFF orientation of the DIP
switches is shown in figure 2 (below).
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 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,
support@patton.com or www.patton.com.
2.1 FEATURES
• Supports async or sync communication over dual optical fibers
• RS-232 Data rates to 57.6 Kbps
• Distances to 2 miles
• V.54 and V.52 Diagnostics
• Mounts in Patton’s 16-Card Rack Chassis
• Compatible with the Patton Model 1140 self-powered modem
• Immune to RFI/EMI noise, ground loops and transient surges
• Easily accessible configuration jumpers & switches
• Bi-level LED status indicators
• Works with switchable 120V or 240V rack mount power supply
• SMA or ST connectors available (HD-26 female RS-232 port) on
rear Interface card
2.2 DESCRIPTION
The Patton Model 1140RC fiber optic rack card modem is the
rack mountable counterpart to Patton’s Model 1140 self-powered, fiber
optic modem. Communicating full or half duplex over dual optical
fibers, the Model 1140RC supports data rates to 57.6 Kbps and
distances to 2 miles. Both V.54 and V.52 diagnostics are built into the
unit. Like all fiber optic modems, the Model 1140RC is inherently
immune to RFI/EMI noise, ground loops and transient surges. The
carrier may be switch selected as either “Continuously On” or
“Controlled by RTS”. Five pairs of bi-level LED indicators monitor TD,
RD, RTS, CD, test and error. A single LED monitors power.
The Model 1140RC is designed to mount in Patton’s 2U high 19”
rack chassis. This 16-card chassis has a switchable 120/240 volt
power supply and mounts cards in a mid-plane architecture: The front
“brains” half-card can be plugged into different rear “interface” cards.
The Model 1140RC is available with a choice of two interface cards:
one with SMA connectors, and one with ST connectors. Both cards are
equipped with an HD-26 female connector for the RS-232 interface.
3 4
Figure 1. Model 1140RC front card jumper locations
Figure 2. Close-up of DIP switches showing “ON” and “OFF” positions
12345678
ON
OFF
ON
Switch Set 1
(Switch 1:1 on bottom)
SwitchSet 2
(Switch 2:1 on bottom)