3.0 CONFIGURATION
The Model 2085 is configured using an eight position DIP switch
and a DCE/DTE switch. Figure 1 (below) shows the location of the
DCE/DTE switch (externally accessible) on the PC board, as well as
the power supply daughter board and terminal block.
Figure 2 (below) shows the location of the eight position DIP switch
on the underside of the Model 2085 PC board. Figure 3 (following
page) shows the orientation of the eight position DIP switch, with
respect to ON/OFF positions.
4
+RCV- G -XMT+
DCE/DTE
Switch
Terminal
Block
Figure 1.
Top view of Model 2085 board, showing DCE/DTE switch.
1
2
3
4
5
6
7
8
ON
DIP Switch
S1
Figure 2.
Bottom view of Model 2085 board, showing (internal) DIP switch.
9. Insert the strain relief assembly with the wire going through it
into the slot in the bottom half of the modem case and set it into the
recess in the case.
10. BEND the top half of the case as necessary to place it over the
strain relief assembly. Do not snap the case together yet.
11. Insert one captive screw through a saddle washer and then
insert the captive screw with the washer on it, through the hole in the
DB-25 end of the case. Snap that side of the case closed. Repeat the
process for the other side. This completes the cable installation
process.
4.1.4 2-WIRE CONNECTION
Most RS-485 devices employ a two-wire, half duplex configuration.
When using this configuration, be sure to first set the Model 2085 to
"two wire" mode—then use
only the transmit (XMT) pair
as shown on
the following page.
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