Patton electronic 3088 - Manual (Page 31)

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ment ) for connection to DCE such as a modem or multiplexer. When
connecting the X.21 interface of the Model 3088/D to your DTE or DCE
device, use an X.21 straight-through cable (See figure 8).
Figure 8. Connecting the Model 3088/D to X.21 DTE or DCE
To change the DCE/DTE orientation from the default position (DCE), you
must open the case Model 3088/D case.
Opening the Case
To open the Model 3088/D case, insert a flat head screw driver into an
open slot on both sides of the case, as in figure 9. Twist the screw driver
head slightly and the top half of the case will separate from the lower
half, as in figure 9. Be careful not to damage the PC-board
mounted components.
Figure 9. Opening the 3088 case with a small screwdriver
Straight-Through 15-pin
D-Sub Cable
DSL Span
Router (DTE)
OR
Mux (DCE)
Model 3088/D (DCE or DTE)
Remote Model 3088)