3.0 CONFIGURATION OV E RV I E W
The Model 1140 is fairly simple to install and is ruggedly designed
for excellent reliability: just set it and forget it. The following instruc-
tions will help you set up and install the Model 1140 properly. If you
have any questions, don't hesitate to call Patton's Technical Support
Hotline at (301) 975-1007 (9-5 PM, EST).
3.1 CONFIGURATION SWITCHES
The Model 1140 uses a unique set of 16 external mini DIP switch-
es that allow configuration to an extremely wide range of applications.
These 16 DIP switches are grouped in two eight-switch sets, and are
externally accessible from the underside of the Model 1140 (see Figure
1). Since all configuration DIP switches are externally accessible,
there is no need to open the Model 1140's case for configuration.
The configuration switches allow you to select data rates, clocking
methods, V.52 & V.54 tests, word lengths, extended signaling rates,
async. or sync. mode. The drawings, text and tables on the following
pages describe all switch locations, positions and functions.
The Model 1140 has two sets of eight switches, yielding 16 total
DIP switches. The three sets will be referred to as S1 and S2. As
Figure 2 shows, the orientation of all DIP switches is the same with
respect to “ON” and “OFF” positions.
3.2 CONFIGURATION SWITCH SET “S1”
The DIP switches on S1 set data rate, clock source, async./sync.
mode and carrier control method. The default settings are summarized
in the table below.
OFF
1 2 3 4 5 6 7 8
OFF
1 2 3 4 5 6 7 8
Figure 1. Model 1140 Configuration Switches External Position
3
4
Configuration
Switches
S1
S2
Figure 2. Close-up of DIP switches showing “ON” and “OFF” positions
1
2
3
4
5
6
7
8
ON
OFF
ON
S1 SUMMARY TABLE
Position
Function
Factory Default
S1-1
Data Rate
On
S1-2
Data Rate
Off
S1-3
Data Rate
Off
S1-4
Data Rate
On
S1-5
Clock Source
On
S1-6
Clock Source
On
S1-7
Async./Sync.
On
Async.
S1-8
Carrier Control
Off
Constantly On
9,600 bps
Internal
}
}
Figure 3. Summary of DIP switch default settings for set S1