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through RS-232, RS-485, and Ethernet interfaces. The
SCU manages the Mechanized Loop Test (MLT)
feature and controls the activation/deactivation relays.
Compliance
Table 1 shows the Compliance Codes for the Total
Access 1500 SCU. The SCU complies with the
requirements covered under UL 1950 and is intended
to be installed in Restricted Access Areas only and in
equipment with a Type "B" or "E" enclosure.
NOTE
At this point in the installation, power should
not be applied to the Total Access 1500 shelf.
Table 1. Compliance Codes
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This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference
received, including interference that may cause
undesired operation.
Changes or modifications not expressly approved by
ADTRAN could void the user's authority to operate
this equipment.
2. INSTALLATION
C A U T I O N !
C A U T I O N
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
After unpacking the unit, inspect it for damage. If
damaged, file a claim with the carrier. Then contact
ADTRAN Customer Service. Refer to the Warranty
and Customer Service section of this practice.
Electronic modules can be damaged by static
electrical discharge. Before handling modules, wear
an antistatic discharge wrist strap to prevent damage
to electronic components. Place modules in antistatic
packing material when transporting or storing.
2
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A
Section 61180008L1-5, Issue 2
The Total Access 1500 SCU plugs directly into the
SCU slot in the common module area of the Total
Access 1500 chassis.
The Total Access 1500 SCU can only be inserted
into the third slot of the shelf. Attempting to
insert the SCU in any other slot may damage the
SCU and/or the backplane.
To Install the Total Access 1500 SCU, perform the
following steps:
1. Pull the latch/ejector on the bottom of the SCU
front panel from its closed position.
2. Hold the unit by the front panel while supporting
p t
t u
the bottom side.
C
2. Align the card edges to the guide grooves for the
SCU slot.
X
-
3. Gently, but firmly, push the SCU into the third
slot on the shelf. Simultaneous thumb pressure at
the top and bottom of the SCU will ensure a good
seat of the SCU pins into the backplane
connector.
4. Lock the unit in place by pressing down the
locking lever.
All power, ground and administrative wiring should
now be completed on the Total Access 1500 shelf, and
an SCU should be installed in the shelf. The next
procedure is to apply power to the shelf with an SCU
in place, and ensure that the SCU properly powers up
and successfully completes its power-on self-test
routine. To verify that the SCU completes its self-test
routine perform the following steps:
1. Insert a fuse into the fuse and alarm panel serving
either the A or B power feeds to the Total Access
1500 shelf. The fuse should be selected with an
amperage appropriate for the intended use of the
Total Access shelf.
2. Verify that the SCU power-on self-test routine is
successfully completed. The LEDs will all
simultaneously flash, then the ACO, HST, and
MLT BSY LEDs will flash four times staying on
the last time. Once these LEDs turn off, the front
panel will represent the true status of the SCU.
This may take more than 1 minute.
WARNING
61180008L1-5B
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