ADTRAN NIU3 Installation And Maintenance Practice

NIU3 NIU3 NIU3
1212075 1212075 1212075
STATUS STATUS STATUS
LOS = RED LOS = RED LOS = RED
AIS = AMBER AIS = AMBER AIS = AMBER
N N
C-BIT C-BIT C-BIT
T T
W W
M13 M13 M13
K K
LBK LBK LBK
LOS = RED LOS = RED LOS = RED
AIS = AMBER AIS = AMBER AIS = AMBER
C C
C-BIT C-BIT C-BIT
U U
S S
M13 M13 M13
T T
LBK LBK LBK
LBK SEL: LBK SEL: LBK SEL:
NTWK = ONCE & HOLD NTWK = ONCE & HOLD NTWK = ONCE & HOLD
CUST = TWICE & HOLD CUST = TWICE & HOLD CUST = TWICE & HOLD
NTWK MON NTWK MON NTWK MON
CUST MON CUST MON CUST MON
1 2
CONTENTS
1. General................................................................ 1
2. Installation .......................................................... 2
3. Turn-Up .............................................................. 4
4. Operation ............................................................ 4
5. Maintenance ....................................................... 4
6. Specifications ..................................................... 4
7. Warranty and Customer Service......................... 5
FIGURES
Figure 1. NIU3 12-Slot Shelf .................................. 1
Figure 2. NIU3 Circuit Diagram ............................. 2
Figure 3. NIU3 12-Slot Shelf Rear Panel ................ 3
Figure 4. Local DC Power Connection ................... 3
TABLES
Table 1. Configuration Codes ................................ 4
Table 2. Shelf Specifications ................................. 5

1. GENERAL

This practice is used in association with the NIU3
circuit card practice, P/N 61212075Lx-5.
The NIU3 12-Slot Shelf installs in a standard 19-inch
bay (23-inch mounting flanges also included) at a
designated location convenient to the customer.
61212078L2-5A
DS3 Network Interface Unit
NIU3 12-Slot Shelf
Installation and Maintenance Practice
NIU3 NIU3 NIU3
1212075 1212075 1212075
STATUS STATUS
LOS = RED LOS = RED
AIS = AMBER AIS = AMBER
N N N
C-BIT C-BIT
T T T
W W W
M13 M13
K K K
LBK LBK
LOS = RED LOS = RED
AIS = AMBER AIS = AMBER
C C C
C-BIT C-BIT
U U U
S S S
M13 M13
T T T
LBK LBK
LBK SEL: LBK SEL:
NTWK = ONCE & HOLD NTWK = ONCE & HOLD
CUST = TWICE & HOLD CUST = TWICE & HOLD
NTWK MON NTWK MON
CUST MON CUST MON
3 4 5

Figure 1. NIU3 12-Slot Shelf

Trademarks: Any brand names and product names included in this document are Section 61212078L2-5, Issue 1
trademarks, registered trademarks, or trade names of their respective holders.
NIU3 NIU3
1212075 1212075
STATUS STATUS STATUS
LOS = RED LOS = RED LOS = RED
AIS = AMBER AIS = AMBER AIS = AMBER
N N N
C-BIT C-BIT C-BIT
T T T
W W W
M13 M13 M13
K K K
LBK LBK LBK
LOS = RED LOS = RED LOS = RED
AIS = AMBER AIS = AMBER AIS = AMBER
C C C
C-BIT C-BIT C-BIT
U U U
S S S
M13 M13 M13
T T T
LBK LBK LBK
LBK SEL: LBK SEL: LBK SEL:
NTWK = ONCE & HOLD NTWK = ONCE & HOLD NTWK = ONCE & HOLD
CUST = TWICE & HOLD CUST = TWICE & HOLD CUST = TWICE & HOLD
NTWK MON NTWK MON NTWK MON
CUST MON CUST MON CUST MON
6 7 8
Revision History
This is the first issue of this document. Future changes
to this document will be summarized in this
paragraph.
Features
The NIU3 12-Slot Shelf provides the following
features and functions:
• Pass through relays ensure virtually uninterrupted
transmission during card replacement, failure, or
power loss.
• Sturdy metal construction.
• Durable powder-coated enamel finish.
• BNC transmit/receive jacks for each NIU3 card.
• Transparent front panel access cover with lock.
• Shelf alarm relay terminals provide alarm
indication.
• Dual -48 VDC power feeds.
• Load-share diode arrangement for redundant
power capability.
• Cable management bars.
• Mounting and accessory hardware included.
Section 61212078L2-5A
Issue 1, May 2003
CLEI Code NCM58Z0D_ _
N I U 3
1212078
NIU3 NIU3 NIU3
1212075 1212075 1212075
STATUS STATUS STATUS
LOS = RED LOS = RED LOS = RED
AIS = AMBER AIS = AMBER AIS = AMBER
N N N
C-BIT C-BIT C-BIT
T T T
W W W
M13 M13 M13
K K K
LBK LBK LBK
LOS = RED LOS = RED LOS = RED
AIS = AMBER AIS = AMBER AIS = AMBER
C C C
C-BIT C-BIT C-BIT
U U U
S S S
M13 M13 M13
T T T
LBK LBK LBK
LBK SEL: LBK SEL: LBK SEL:
NTWK = ONCE & HOLD NTWK = ONCE & HOLD NTWK = ONCE & HOLD
CUST = TWICE & HOLD CUST = TWICE & HOLD CUST = TWICE & HOLD
NTWK MON NTWK MON NTWK MON
CUST MON CUST MON CUST MON
9 10 11
NIU3
1212075
STATUS
LOS = RED
AIS = AMBER
N
C-BIT
T
W
M13
K
LBK
LOS = RED
AIS = AMBER
C
C-BIT
U
S
M13
T
LBK
LBK SEL:
NTWK = ONCE & HOLD
CUST = TWICE & HOLD
NTWK MON
CUST MON
12
1