ADTRAN DS3 NIU3, Installation And Maintenance Practice

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®
Section 61212073L1-5D
Issue 4, August 2004
CLEI Code: NCM5K4ZD_ _
61212073L1-5D 1
Trademarks: Any brand names and product names included in this document are
trademarks, registered trademarks, or trade names of their respective holders.
Figure 1. DS3 NIU3 3-Slot Shelf
CONTENTS
1. General .................................................................... 1
2. Description .............................................................. 1
3. Installation............................................................... 2
4. Wiring...................................................................... 2
5. Turnup ..................................................................... 4
6. Operation................................................................. 4
7. Maintenance ............................................................ 4
8. Specifications .......................................................... 5
9. Warranty and Customer Service ............................. 6
FIGURES
Figure 1. DS3 NIU3 3-Slot Shelf ..................................... 1
Figure 2. NIU3 Circuit Diagram....................................... 3
Figure 3. NIU3 3-Slot Shelf Rear Panel ........................... 3
Figure 4. Local DC Power Connection ............................ 3
Figure 5. Power Supply/Rectifier Connection.................. 4
TABLES
Table 1. Compliance Codes ............................................ 1
Table 2. DS3 NIU3 3-Slot Shelf Specifications.............. 5
1. GENERAL
This practice is used in association with the NIU3
circuit card practice, P/N 61213075L2-5.
The ADTRAN ® NIU3 3-Slot Shelf (P/N 1212073L1)
installs in a standard 19-inch bay (23-inch mounting
flanges also included) at a designated location conve-
nient to the customer.
Revision History
Issue 4 of this document provides the inclusion of a
cautionary statement concerning the bypass relays in
the Installation section on page 2.
2. DESCRIPTION
The NIU3 3-Slot Shelf is an all-metal construction
housing that has slots for 3 NIU3 horizontally-mounted
circuit cards. Card guides direct the card to the
backplane edge connector. When properly inserted,
thumbscrews on the NIU3 front panel align and fasten
to threaded holes on the shelf. Shelf slots are numbered
1 through 3, left to right, looking at the front of the shelf.
The backplane circuitry is protected by a metal cover
that has openings for BNC data jacks, pass-through
relays, power terminal connections, and alarm pins.
Removable covers provide security for power and alarm
connections, and pass-through and alarm relays. All
connections are clearly labeled.
Features
The NIU3 3-Slot Shelf provides the following features
and functions.
• Field replaceable pass-through relays ensure virtu-
ally uninterrupted transmission during card replace-
ment, failure, or power loss.
• BNC transmit/receive jacks provided for each
NIU3 card.
• Shelf alarm relay terminals provide alarm indica-
tion.
• Dual
−
48 VDC or ±24 VDC power feeds provided.
• Sturdy metal construction with durable powder-
coated enamel finish.
• Mounting and accessory hardware included.
Compliance
The NIU3 3-Slot Shelf is intended for installation in a
restricted access, environmentally controlled, or
protected location only.
See Table 1 for compliance codes.
NTWK MON
NIU3
1212075
CUST MON
LBK SEL:
NTWK: 1X & HOLD CUST
: 2X & HOLD
DUAL: 3X & HOLD
LOS = RED AIS =
AMBER
C-BIT M13 LBK
N
T
W K C U
S T
ST
A
TUS
LOS = RED AIS =
AMBER
C-BIT = GRN IDLE =
AMBER
M13 = GRN IDLE =
AMBER
LBK FUSE ALARM
NTWK MON
NIU3
1212075
CUST MON
LBK SEL:
NTWK: 1X & HOLD CUST
: 2X & HOLD
DUAL: 3X & HOLD
LOS = RED AIS =
AMBER
C-BIT M13 LBK
N
T
W K C U
S T
ST
A
TUS
LOS = RED AIS =
AMBER
C-BIT = GRN IDLE =
AMBER
M13 = GRN IDLE =
AMBER
LBK FUSE ALARM
NTWK MON
NIU3
1212075
CUST MON
LBK SEL:
NTWK: 1X & HOLD CUST
: 2X & HOLD
DUAL: 3X & HOLD
LOS = RED AIS =
AMBER
C-BIT M13 LBK
N
T
W K C U
S T
ST
A
TUS
LOS = RED AIS =
AMBER
C-BIT = GRN IDLE =
AMBER
M13 = GRN IDLE =
AMBER
LBK FUSE ALARM
Table 1. Compliance Codes
Code Input Output
Power Code (PC)
Telecommunication Code (TC)
Installation Code (IC) F
-
E
C
-
-
DS3 NIU3 3-Slot Shelf
Installation and Maintenance Practice