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SECTION 2
INSTALLATION
OVERVIEW
This section describes the installation of the DataComm 551, including
option selection.
UNPACKING AND
HANDLING
The DataComm 551 is shipped in packing material that is enclosed in a
corrugated box. Inspect the DataComm 551 for damage; if any is observed,
notify the shipper immediately. Do not discard the box and packing mate-
rial; their use will facilitate reshipping the DataComm 551, if necessary.
PREOPERATIONAL
CHECK
Before it is connected to the network or the customer equipment, and be-
fore any factory-set options are changed, the DataComm 551 should be
given a preoperational check by performing a DS1 Local Test with Self-
Test to verify normal operation. Refer to Section 4 for instructions on per-
forming this test. First verify that the options are set as shown in Figure
2-1, and perform the test on the DataComm 551 before it is connected to
anything except ac power.
If the DataComm 551 passes the test, but subsequently fails to perform in
data communications operation, it may not be at fault; some error may
have been made in the installation or option selection, or there are other
faulty devices or connections. Recheck the connections and option selec-
tions, and if necessary perform the Fault Isolation Procedures in Section
4 to isolate the fault. Also verify that the customer equipment and remote
CSU are compatible. In the event that the DataComm 551 does not check
out properly, replace it with a spare, if available, and repeat the test. Do
not attempt to repair the DataComm 551. For assistance, contact
DataComm Service Corporation (refer to the Technical Assistance Proce-
dure in Section 4).
INSTALLATION
PROCEDURES
The DataComm 551 should be installed in a ventilated area where the
ambient temperature does not exceed 122˚F (50˚C). Do not install the
DataComm 551 above other equipment that generates large amounts of
heat (e.g., power supplies).
2-1
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