INSTRUCTION MANUAL
NPPA-TT-E56
PATCH PANEL “Easy Patch” | 96 Bantam (TT) Jacks,
EDAC 56-pin termination

NEUTRIK AGNEUTRIK Zürich AG
Liechtenstein
Switzerland
Tel.: +423/237 24 24 Tel.: +41 44/736 5010
Fax: +423/232 53 93 Fax: +41 44/736 5011
www.neutrik.com
Draft. Nr.:
Update:NEUTRIK (UK) Ltd.
NEUTRIK USA INC.
Great Britain
USA
Tel.: +44 1983/811 441 Tel.: +1 732/901 9488
Fax: +44 1983/811 439 Fax: +1 732/901 9608

BDA90-1/ 3102M0801
03.08.2009

Data subject to change without prior notice. ©2007 NEUTRIK . ALL RIGHTS RESERVED.

NEUTRIK Tokyo Ltd.
JapanTel.: +81 3/3663 4733
Fax: +81 3/3663 4796

NEUTRIK France
NEUTRIK Vertriebs GmbHFranceGermany/Netherlands/Austria
Tel.: +33 1/4131 6750 Tel.: +49 8131/28 08 90
Fax: +33 1/4131 0511 Fax: +49 8131/28 08-30

NPPA-TT-E56 Instruction ManualIndex
1. Electrical configuration.................................................................................................3
2. Replacement of Jack Pairs ..........................................................................................4
3. Reconfiguration by hand..............................................................................................5
4. Grounding variations ...................................................................................................6
5. Wiring diagram ............................................................................................................8
6. Cable retention to the unit............................................................................................9
7. Channel identification ..................................................................................................9
8. Technical data ...........................................................................................................11
9. Ordering Information..................................................................................................12482 (19”)

43.5

31.3

Dimensional Drawings “Easy Patch” NPPA-TT-E56

89.4

435

Page 2 of 12NPPA-TT-E56 Instruction Manual

1. Electrical configuration
The Neutrik ”Easy Patch” Patch Panel is fitted with high quality, long life NJ3TTA gold plated
double contact jacks (2 x 48). This Patch Panel is an innovative and compact patching system(just 1 U high) for 19” rack mounting. Robustly housed in black coated steel shell and featuring
precision aluminum fittings it is built to last. The Neutrik "Easy Patch” is suitable for analog anddigital audio signals.
The ”Easy Patch” is available in five normalling configurations (fully loaded).
•••••half normalled bottom row
half normalled top row
full normalled
parallelisolated

Configuration Chart

Furthermore individual jack pairs can be changed to combine various normallings within one
panel quickly and without fuss. This is even possible while the panel is "on air". For this we offer
pre-configured jack pairs (NJ3TTA-4-*).
In case of emergency the normalling for individual jack pairs can be changed by the use ofnormalling bars. Normalling bars to change the normalling of 4 channels are included.

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NPPA-TT-E56 Instruction Manual

2. Replacement of Jack Pairs
Each individual jack pair can be exchanged quickly and without fuss even while the panel is "onair". For replacement simply remove the easy accessible jack pairs.

Module consisting of 2 Jack Pairs

Remove Front Panel by unscrewing the 3 black cross-recessedscrews (M3x8 Taptite), remove the two side-stops.

Push out the channel identification strips.

Pull one module out of the casing using the supplied
disassembling pliers

Alternatively the jack pairs may be pulled out by the use of twoBantam plugs (diagonally plugged in).

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NPPA-TT-E56 Instruction Manual

The two jack pairs have to be re-assembled in the right way sothat the thicker body marked “left” is put on the left side withthe mark outside and readable.

To complete, push the new jack pairs into the casing again with the mark on the left side (Ifmore than one module are removed always assemble from the center to the right or left sideand be careful that the keys on the left side of the jack pairs find their guiding slots. If all jackpairs are removed start at the casing support in the center and assemble to the right and leftside). Slide in again the channel identification strips (best from the outside inwards) and fix thefront panel with the black cross-recessed screws. Don’t forget to insert the side-stops before
fixing the screws (see page 10).

3. Reconfiguration by hand
Please note, in case of emergency the normalling can by changed by hand by the use ofnormalling bars. For easy and safe modification work we recommend our preconfigured jackpairs (NJ3TTA-4-*).

The two jack pairs are separated by spreading apart the rearparts to unlock the fixing mechanism till it is possible...

...to slide the jack pairs against each other in axial direction.

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NPPA-TT-E56 Instruction Manual

Then remove the cover with a tiny grip at the side and carefully

Pull out the configuration bars you need to exchange(preferably using a small screw-driver).

Insert new bars carefully by pressing them in parallel at bothends.
Attention: To ensure best contact conditions never reuse theconfiguration bars once being put in place! Always take newones! Keep the contacts and switches in place with the thumbwhile manipulating the normalling contacts.

Finally snap on the cover (Insert it first at one side and thensnap slightly into the opposite groove with a light pressure onthe nose).

4. Grounding variations
The flexible grounding system provides the following versions:Individual:Group:

Central:Chassis-Common:

Each channel is individually grounded by its corresponding cable shield(default configuration).
Selected channel grounds are connected via the ground bus on thePCB using solder bridges and track cuts to form a group that isconnected to one common cable shield.
All channel grounds (individual top and bottom row) are connected via
the ground bus on the PCB using solder bridges and wired with only
one cable shield.
The same as central grounding but with the addition of the common
ground bus (top and / or bottom rows) connected to the patch panel
chassis by means of jumpers.

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NPPA-TT-E56 Instruction Manual

Symbolic structure of ground connection:
S1 - S48

Corresponding flat tab
for Top Row ground contacts

S49 - S96

Corresponding flat tabfor Bottom Row ground contacts

Arrangement on PCB (seen from mating side)
EDAC - keyfor orientation

Flat tab to connect Ground cable

Pin Header & Jumpers

PCBPin Header

EDAC 56 pin
Solder Pads to connect single ground contacts either to Common Top or Bottom ground-bus

Configurations
Chassis Top

Chassis Bottom

Chassis Common

Note that all these
configurations areonly given when
all of the corresponding
solder-pads areconnected:
Connection between
PCB and Chassis is only existing
if the Ground cable isconnected

Central(Top & Bottom connected
separated from Chassis)............. Needed jumper position for intended Grounding............. Insignificant jumper positionNOTE: In standard configuration there is no ground connection between top and bottom row
unless it is provided by an inserted patch cable. If this is required, as in the case ofphantom powered microphone lines, either make an internal connection by individuallywiring the corresponding upper and lower ‘S’ terminals, or if the latter is critical withrespect to possible ground loops make the connection via patch cable instead of using
the normalling feature.

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FemaleHeader

Page 8 of 12PinHeader

2.8 mmFlat Tabs

12
3
4
56EDAC #1-8
9 -16
17 - 24
25 - 32
33 - 40
41 - 48

49 - 56
57 - 64
65 - 72
73 - 80
81 - 88
89 - 96

Channel #Top
BottomContact arrangement

R55

R54

R53

FemaleHeader

T56
R56

T55

T54

T53

FemaleHeader

S56

S55

S54

S53

FemaleHeader

T8
R8

T7
R7

T6

S8

R6

S7

Channel 8

T5

S6

Channel 7R5

S5

Channel 6

Channel 5

R52

R51

R50

R49

FemaleHeader

T52

T51

T50

T49

FemaleHeader

S52

S51

S50

S49

FemaleHeader

T4
R4

T3
R3

T2

S4

R2

S3

Channel 4

T1

S2

Channel 3

R1

S1Channel 2Female
HeaderChannel 1

SBSTSBSTPinHeader

56 poleEDAC malemating side

#1ROWTO
PROW

BOTTO
M

NPPA-TT-E56 Instruction Manual

5. Wiring diagram

SBST

NPPA-TT-E56 Instruction Manual

6. Cable retention to the unit
The ELCO®-EDAC® 56 connector is fixed to the housing by means of 4 screws. The plug itself
is secured by one screw.
The built in cable retention bar is at the back of the casing. Simply attach the cables with cableties to the bar as shown in the photo.

Cable Retention Bar

7. Channel identification
The front panel is equipped with channel identification strips located in the center of thechannels and marked with the channel numbers 1-24 and 25-48 respectively.

Channel identification strips

Labeling strips

For the perfect management of the system and for individual identification according tocustomer’s needs there are two large and separate labeling strips, one for the bottom and one
for the top row.

Page 9 of 12

NPPA-TT-E56 Instruction ManualTo write on the paper you have to unscrew one of the outer fixing screws of the front panel.
Then pull out the side-stop, the transparent foil and the paper strip itself.
After marking is done assemble the parts in reversed sequence.

Remove labeling strip

Side Stop

NOTE: For easy and perfect marking you can use our designation software “PatchLabel”
which is available on our web site www.neutrik.com free of charge.

Print-Out software “Patch Label”

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NPPA-TT-E56 Instruction Manual

8. Technical data
8.1 ElectricalFrequency range:
Digital suitability:
Channel separation:
Insulation resistance:
Connector contact resistance:
Switch contact resistance:
Dielectric strength:

DC to > 50 MHzDigital audio acc. to AES/EBU> 100 dB @ 10 kHz, 600 Ω terminated> 40 dB @ 6 MHz , 110 Ω terminated> 109 Ω @ 500 V dc
< 20 mΩ< 25 mΩ1000 V dc

7.2 Mechanical
Lifetime:
Insertion / Withdrawal force:
Cable retention force:
Dimensions (rack mount):
Depth:
Weight:Temperature range:> 5.000 Insertion / withdrawal cycles< 10 N / > 8 N
70 N max per cable retention bar
482 mm (W) × 44 mm (H) (19” × 1 U)
89 mm (3.5”)
2.1 kg- 30°C to +80°C

7.3 Materials
Jack housing:Jack contacts:
Casing:Front Panel:

PA 66 blend
CuSn6 – TRIBOR® plated (0.2 µm AuCo over 2 µm NiP)
Steel and aluminum, black coated
AlMgSi 0.5 F22

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NPPA-TT-E56 Instruction Manual

9. Ordering Information
Standard supply
The compact Neutrik "Easy Patch” NPPA-TT-E56 consists of:
••
•
•
•
•

•
•

Black coated steel casing with aluminum fittings
2 x 48 highly integrated Neutrik NJ3TTA jacks with gold plated double contacts and speciallydesigned normalling mechanism (standard: half normalled bottom row)
Integrated internal pre-wiring with selectable flexible grounding system
6 ELCO®-EDAC® 56-pin male connectors
Chassis integrated cable retention
Spare normalling configuration bars
4 Normal 1 : “short”, bridges 5 contacts
8 Normal 2 : “medium”, bridges 6 contacts
4 Normal 3 : “long” , bridges 7 contacts
1 Disassembling pliers
1 Instruction Manual

Options and Accessories
Pre-configured Jack-Pairs
Part Number
Description
NJ3TTA-4-HNB blocks of 2 channels
NJ3TTA-4-HNT blocks of 2 channels
NJ3TTA-4-FNblocks of 2 channels
NJ3TTA-4-Pblocks of 2 channels
NJ3TTA-4-I
blocks of 2 channels
Accessories
NPPA-S
NKTT*
NPPA-NB

Configuration*
half normalled bottom row
half normalled top row
full normalled
parallelisolatedcover ident color: clear
cover ident color: yellow
cover ident color: green
cover ident color: redcover ident color: orange

Strain Relief bar
Patch cords with NP3TT-1 plugs. Available in black, blue, green, red andyellow. Lenght: 30, 40, 60, 90, 120 cm
Normalling bars for changing the normalling of all 48 channels

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