Black Box JPM083A User manual

1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax [phone]
© Copyright 1998. Black Box Corporation. All rights reserved.

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CUSTOMER
SUPPORT
INFORMATION
JULY 1998
JPM083A
JPM084A
JPM085A
JPM086A
12-Port Modular Patch Panels
24-Port Modular Patch Panels
24 PORT MODULAR PATCH PANEL
6
12
18
24
CATEGORY
5

12- AND 24-PORT MODULAR PATCH PANELS
TRADEMARKS USED IN THIS MANUAL
UL is a registered trademark of Underwriters Laboratories Incorporated.
Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

12- AND 24-PORT MODULAR PATCH PANELS
1
1. Specifications
Compliance — UL®listed, #1863
Termination Type — Incoming cables terminated to 110 clips
Connectors — RJ-45 modular jacks used for patching 568B or 568A wiring pattern
(see the illustrations below)
Wiring — JPM084A, JPM086A: TS568A (EIA/TIA) wiring pattern;
JPM083A, JPM085A: T568B (Bell 258A) wiring pattern
Bandwidth Support — Up to 100 MHz
Transmission — Exceeds Category 5 requirements for near-end crosstalk (NEXT), attenuation,
and return loss as specified in TSB-40 standard
MTBF — 200 cycles
Temperature — Operating: 14 to 140°F (-10 to +60°C);
Storage: -40 to +158°F (-40 to +70°C); 70% relative humidity
Size — JPM083A, JPM084A: 4.2"H x 17.8"W x 2.8"D (10.7 x 45.2 x 7.1 cm);
JPM085A, JPM086A: 8.2"H x 17.8"W x 2.8"D (20.8 x 45.2 x 7.1 cm)
Weight — 3 lb. (1.3 kg)
W-O O W-G Bl W-Bl G W-Br Br
12345678
Pair 2 Pair 1 Pair 4
Pair 3
568B 568A
Pair 2
Pair 3 Pair 1 Pair 4
1 2 3 4 5 6 7 8

12- AND 24-PORT MODULAR PATCH PANELS
2
2. Introduction
2.1 Description
The 12- and 24-Port Modular Patch Panels are designed for small- to medium-sized cross-connect
applications where space is limited. For example, the Patch Panel is ideal for cluttered telecommuni-
cation closets where relay racks aren’t practical. Because the Panel mounts directly on the wall, no
extra rack equipment is needed. See Figure 1 for an illustration of the 24-Port Modular Patch Panel.
The Panel supports all applications operating on bandwidths up to 100 MHz, including TP-PMD and
ATM. The panel exceeds all Category 5 transmission requirements for NEXT, attenuation, and return
loss.
2.2 Features
• The panel’s simple one-piece design (plus cover) guarantees a clean installation,
even in small closets.
• Removable cover protects terminations.
• Total front access to the 110 clips and modular jacks (separate fields for terminating
and cross-connecting) cuts installation time and labor costs.
• The Patch Panel is clearly labeled with jack and block identification numbers.
• Fully enclosed PC board reduces radio-frequency interference.
• Built-in cable management, featuring jumper loops, keeps your cable neat and organized,
and helps technicians comply with Category 5 installation practices.
• Removable, unobstructed gold designation strips ensure easier moves and changes.
• 100% computer tested means the Panel ensures reliable Category 5 point-to-point continuity.
• Keyhole mounting slots for easier installation.

12- AND 24-PORT MODULAR PATCH PANELS
3
Figure 1. The 24-Port Modular Patch Panel.
J-7 J-12
J-13 J-18
J-19 J-24
J-1 J-6
1 6
712
13 18
19 24
1 6
712
13 18
19 24
5
Category
5
Category
Removable cover protects terminations
Separate fields for terminating, patching
Removable, unobstructed designation strips
Built-in
jumper
management
Built-in wire management
helps eliminate cable stress,
maintain proper bend radius
Silk-screened jack and
block identification

12- AND 24-PORT MODULAR PATCH PANELS
4
3. Installation
Determine the appropriate mounting location for the patch panel. Insert screws (not supplied)
through the keyholes in the rear panel and fasten the patch panel securely to the wall.
There are countless ways to install cable in your patch panel. Figures 2 and 3 show (1) the suggested
order to terminate the 110 clips (left side of the panel) and (2) the suggested routing of line cords
between panels. This setup organizes the cables so the 110 clips and RJ-45 jacks are easily accessible,
even with a full patch panel.
Since NEXT electrical performance is affected by wiring practices, the TIA/EIA in 568 specifies
“preserving wiring twist as closely as possible to the point of mechanical termination.” In addition,
TSB-40 states “the amount of untwisting in a pair as result of termination to connector hardware shall
be no greater than 13 mm (0.5 inches) for Category 5 and shall be no greater than 24 mm (1 inch)
for Category 4.”

12- AND 24-PORT MODULAR PATCH PANELS
5
Figure 2. Suggested Cable Installation for the 24-Port Patch Panels.
J-7 J-12
J-13 J-18
J-19 J-24
J-1 J-6
1 6
712
13 18
19 24
J-7 J-12
J-13 J-18
J-19 J-24
J-1 J-6
1 6
712
13 18
19 24
23 19 15 11 7 3
21 17 13 9 5 1
22 18 14 10 6 2
24 20 16 12 8 4
8.27"
2.00"
3.84"
14.31"
15.63"
17.75"
3.84"
5
Category
5
Category

12- AND 24-PORT MODULAR PATCH PANELS
6
Figure 3. Suggested Cable Installation for the 12-Port Patch Panels.
J-1 J-16
J-7 J-12
7 12
16
12 10 8 6 4 2
11 9 7 5 3 1
The numbers in the diagram below
illustrate the suggested order to
terminate 110 clips.
The illustration below shows the
suggested routing for line cords.