3
5. Perform the Device Test as described in the
Operation section of the User’s Guide.
If the DSU fails this test, replace the DSU.
6. Connect the network interface.
The Model 3510 DSU’s rear panel contains a miniature universal service ordering
code (USOC) type RJ48S jack for connecting your DSU to the digital network.
Purchasers in the United States receive a modular telephone cable (D8W-87) with
each DSU, with identical connectors on both ends. Canadian purchasers must
order another cable (Feature Number 3000-B1-006) with a USOC-type RJ48S
connector on one end and a 6-pin connector on the other.
7. Connect the DSU to the digital network by inserting the 8-pin end of the cable into
the connector labeled LINE at the rear of the DSU.
Insert the other end of the cable into the modular jack provided by the telephone
company. Make sure the OK indicator shows green and the OS/NS indicator stops
flashing.
NOTE:
For LADS applications, the OK indicator will not come on and the OS/NS
indicator will flash until both DSUs are connected to the LADS circuit.
8. The DSU has an EIA-232-D/V.24 (ISO 2110) connector and a CCITT V.35
connector. EIA-232-D/V.24 is the factory default setting; Switch S3-6 on the CCA is
positioned toward the front (F). Equipment speeds above 19.2 kbps typically use
the V.35 interface.
To configure the DSU to use the V.35 interface, set Switch S3-6 on the CCA toward
the rear (R) during configuration. Refer to
Hardware Strapping on page 8 for
additional information.
NOTE:
For the V.35 connector, the recommended maximum distance between a DTE
and a DSU is nominally 1000 feet. For the EIA-232 connector, the effective
shunt capacitance of the circuit, measured at the DSU, including the
capacitance of the cable and the DTE, must not exceed 2500 picofarads, as
specified in EIA-232-D.
9. Insert the plug end of the DTE cord into the appropriate DATA TERMINAL
connector (EIA-232-D or V.35) at the back of the DSU. Connection of the DSU to
the DTE is a matter of selecting and installing the appropriate cable.
Connect the other end of the DTE cord to your DTE.
10. If the network line and remote-end DSU are installed and tested, do a Remote
Loopback – Test Pattern Test (Point-to-Point or Multipoint).
11. If the Front Panel test switches strap is to be disabled, do this now.
Installation of the standalone Model 3510 DSU is complete.