Installation; Figure 2. 23-Inch T400 Backplane - ADTRAN T400 Installation And Maintenance Manual

• Four 50-pin male amphenol connectors for
input/output signals.
• One loss-of-power relay.
• One five-terminal barrier strip for power,
ground, frame ground, and two Loss-of-Power
Alarm contacts.

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
damage is noted, file a claim with the carrier, then
contact ADTRAN. See Warranty and Customer
Service.
After unpacking the shelf, verify the zip-lock bag
contains the following items:
• Four cable tie-wrap mounts.
• Five cable tie-wraps.
• Five #12-24 mounting screws.
• One card and card pouch.
• One key for lockable front cover.
Before installing the T400 Shelf into a bay, remove
any plug-in cards that were shipped with the shelf. To
remove the cards, grasp the faceplate handle and pull.
Temporarily store these units in an area protected
from static electricity.
Mounting
The T400 Shelf is designed to mount directly into a
standard 23-inch wide flange type communications
bay. The T400 Shelf is factory configured to mount 4
J14 J13
2
P1
50
25 P 1
J12 J11 J10 J9
50
P 2
25
P2

Figure 2. 23-inch T400 Backplane

Section 61150092L1-5, Issue 5
inches from the front of the bay. Holes are also
provided for mounting the shelf 5 inches from the
front of the bay. The flanges are easily repositioned
for the applicable mounting arrangement.
Instructions for mounting and electrically connecting
the T400 Shelf in the bay are as follows:
1. Determine the chassis location in the bay.
2. Align the flange mounting holes on each side of
the shelf with the bay mounting holes and
secure with supplied fasteners.
3. Remove the rear cover by disengaging the two
Phillips-head screws.
Customer supplied ring-lug wire terminals are
recoáGended for TS1 connections.
4. Insert wires through the cable side entry
grommet before attaching ring-lug terminals.
5. Connect a fused -48 Vdc supply and return, that
is electrically isolated from an AC source, to
-48 V and GND on TS1 (see Figure 3). Fuse
rating depends on the type of circuit cards
deployed. Maximum current for the shelf PCB
is 15 A.
Although rated at 15 A, the shelf PCB can be
fused at 5 A if all shelf units are ADTRAN.
P3
26 50 26
1 25 P 3 1
J8 J7 J6 J5
25 50 26
P 4
1 25 1
P4
NOTE
NOTE
J4 J3 J2 J1
ALARM
FRAME GND -48V A B
TS1
TS1
61150092L1-5E