Patton electronics 1004, User Manual

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3.0 CONFIGURATION
The Model 1004 is configured using six PC board mounted switch-
es. Figure 1 shows the switch locations, along with the location of the
terminal blocks and optional surge protectors:
3.1 SETTING THE DCE/DTE SWITCH
For your convenience, the Model 1004 has an externally accessi-
ble DCE/DTE switch (Figure 2). If the device connected to the Model
1004 is a modem or multiplexer (or is wired like one), set the switch to
“DTE”. This setting causes the Model 1004 to behave like Data
Terminal Equipment and transmit data on pin 2.
If the device connected to the Model 1004 is a PC, terminal or
host computer (or is wired like one), set the switch to “DCE”. This set-
ting causes the Model 1004 to behave like Data Communications
Equipment and transmit data on pin 3.
3
DCE DTE
DCE/DTE
Switch
2-Wire/4-Wire
Switch
Surge
Suppressors
(1004S only)
Terminal
Block
Control
Switches
Figure 1. Model 1004 board, showing switch locations
Figure 2. Close up of the external DCE/DTE switch
3.2 ACCESSING THE CONFIGURATION SWITCHES
The five switches shown in Figure 3 configure the Model 1004 for
RTS/CTS delay, echo, method of carrier control, impedance and
2-wire/4-wire operation. These switches are located
internally on the
Model 1004's PC board. To access switch set 1 (SW1) and switch set
2 (SW2), use a small flat blade screwdriver to pop open the Model
1004's case as shown in Figure 4.
4
“ON”
“OFF”
SW2 SW1
Figure 3. Close up of switches SW1 and SW2 on the PC board
Figure 4. Opening the Model 1004's plastic case with a small screwdriver
1 2 3
4