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INSTALLATION INSTRUCTIONS
SECTION 200-255-204
FEBRUARY 1992
2)
3)
PDIU-DS disassembly/assembly instruc-
tions, and Figure 4-54 provides jumper plug
information).
Connectthe PDIU-DS totheappropriate NDKU
circuit in accordance with the wiring diagrams
in Section 200-255-205.
Connect the appropriate RS-232 cable be-
tween the modem and the PDIU-DS. Figure
4-60 shows an example of PDIU-DS to a
Hayes modem RS-232 connection.
IMPORTANT NOTE!
All ten PDIU-DS EIA leads (signals) should
be connected to the modem. Consult the
modem' s documentation
for correct RS-
232 pin requirements. The requirements
may vary with each manufacturer.
4) Connect the line side of the modem to a NSTU
standard telephone circuit, or a dedicated CO
line (Consult the modem' s documentation to
connect it to a CO line). Section 200-255-205
provides NSTU station portwiring information.
5) Refer to the DDIU Program for PDIU-DS
connection assignments.
IMPORTANT NOTE.'
The eighth port (circuit) of the NDKU can-
not be used for data switching connections
(PDIU-DI or PDIU-DS).
6.170 PDIU-DS Disassembly and Assembly
6.171 To set the jumper plugs PI - P9 on the sub-
assembly inside the PDIU-DS for DCE or DTE
operation, the PDIU-DS must be disassembled
(Figure 4-61). Disassemble the PDIU-DS in accor-
dance with the steps in Paragraph 6.172.
6.172 Disassembling the PDIU-DS
1) Remove the four screws securing the bottom
panel to the rest of the unit. These screws are
2)
3)
4)
not captive, so place them together where
they can be easily accessed.
Remove the bottom panel.
Remove the PCB by lifting the back panel from
its side grooves.
Turn the PCB over and set jumper plugs Pl -
P9 as follows:
l
If the PDIU-DS is connected to a DTE,
set the plugs to the "A-B" position.
l
If the PDIU-DS is connected to a DCE
device, set the plugs to the "B-C" position.
6.173 Assembling the PDIU-DS
1) Position the back panel to the PCB.
2) Slide the back panel down into its side grooves.
3) Attach the bottom panel, and secure it with the
four noncaptive screws.
6.180 PDIU-DVPDIU-DS Installation Tests
6.181 Figures 4-62 - 4-65 provide tests for four
PDIU call applications. The telephone and port
numbers used in these figures are provided for
explanation purposes only. When actually testing,
use port and telephone numbers appropriate for
the system. Each of these tests can be conducted
with either manual dialing from atelephone dialpad,
or AT dialing from a personal computer keyboard;
however, only the preferred method of dialing for
the application is presented, The PDIU User Guide
has additional information on the tests, which are
listed below:
l
Figure 4-62-PC to PC Test Call Using AT Com-
mands
l
Figure4-63-PCto PrinterTest Call Using Manual
Dialing
l
Figure 4-64-Internal PC to External PC Test Call
Using AT Commands
l
Figure 4-65-External PC to Internal PC Test Call
Using AT Commands
4-52
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