Neutrik NPPA-TT-E56 User Manual

INSTRUCTION MANUAL

NPPA-TT-E56

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

NEUTRIK AG NEUTRIK Zürich AG NEUTRIK (UK) Ltd. NEUTRIK USA INC. NEUTRIK Tokyo Ltd. NEUTRIK France NEUTRIK Vertriebs GmbH

Liechtenstein Switzerland Great Britain USA Japan France Germany/Netherlands/Austria

Tel.: [phone] Tel.: [phone] Tel.: [phone] Tel.: [phone] Tel.: [phone] Tel.: [phone] Tel.: [phone]
Fax: [phone] Fax: [phone] Fax: [phone] Fax: [phone] Fax: [phone] Fax: [phone] Fax: [phone]
www.neutrik.com

Draft. Nr.: BDA90-1/ 3102M0801

Update: 03.08.2009

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

NPPA-TT-E56 Instruction Manual

Index

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..................................................................................................12

Dimensional Drawings “Easy Patch” NPPA-TT-E56

31.3

482 (19”)

435

89.4

43.5

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NPPA-TT-E56 Instruction Manual

1. Electrical configuration

The Neutrik
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 and
digital audio signals.

The ”Easy Patch” is available in five normalling configurations (fully loaded).

• half normalled bottom row

• half normalled top row

• full normalled

• parallel

• isolated

”Easy Patch” Patch Panel is fitted with high quality, long life NJ3TTA gold plated

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 of
normalling 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 "on
air". For replacement simply remove the easy accessible jack pairs.

Module consisting of 2 Jack Pairs

Remove Front Panel by unscrewing the 3 black cross-recessed
screws (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 two
Bantam 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 so
that the thicker body marked “left” is put on the left side with
the mark outside and readable.

To complete, push the new jack pairs into the casing again with the mark on the left side (If
more than one module are removed always assemble from the center to the right or left side
and be careful that the keys on the left side of the jack pairs find their guiding slots. If all jack
pairs are removed start at the casing support in the center and assemble to the right and left
side). Slide in again the channel identification strips (best from the outside inwards) and fix the
front 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 of
normalling bars. For easy and safe modification work we recommend our preconfigured jack
pairs (NJ3TTA-4-*).

The two jack pairs are separated by spreading apart the rear
parts 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 both
ends.

Attention: To ensure best contact conditions never reuse the
configuration bars once being put in place! Always take new
ones! Keep the contacts and switches in place with the thumb
while manipulating the normalling contacts.

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

4. Grounding variations

The flexible grounding system provides the following versions:
Individual: Each channel is individually grounded by its corresponding cable shield

(default configuration).

Group: Selected channel grounds are connected via the ground bus on the

PCB using solder bridges and track cuts to form a group that is
connected to one common cable shield.

Central: 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.

Chassis-Common: 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.

Page 6 of 12

A

NPPA-TT-E56 Instruction Manual

Symbolic structure of ground connection:

S1 - S48

S49 - S96

Pin Header

Corresponding flat tab
for Top Row ground contacts

Corresponding flat tab
for Bottom Row ground contacts

EDAC - key
for orientation

PCB

EDAC 56 pin

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

rrangement on PCB

Flat tab to connect Ground cable

(seen from mating side)

Pin Header & Jumpers

Configurations

Chassis Top

Chassis Bottom

Chassis Common

Central
(Top & Bottom connected
separated from Chassis)

............. Needed jumper position for intended Grounding

............. Insignificant jumper position

Note that all these
configurations are
only given when
all of the corresponding
solder-pads are
connected:
Connection between
PCB and Chassis is only existing
if the Gro un d cab le i s
connected

NOTE: 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 of
phantom powered microphone lines, either make an internal connection by individually
wiring the corresponding upper and lower ‘S’ terminals, or if the latter is critical with
respect to possible ground loops make the connection via patch cable instead of using
the normalling feature.

Page 7 of 12

A

W

W

NPPA-TT-E56 Instruction Manual

5. Wiring diagram

T

T

B

O

R

O

O

M

T

P

R

O

O

# 1

56 pole

mating side

EDAC male

Pin

Header

SB
ST

ST

T4

S4

R4

T52

S52

R52

SB

ST

T8

S8

R8

T56

S56

R56

SB

Top Bottom

Header

Female

T7

T3

S3

R3

T51

S51

R51

S7

R7

S55

Header

Female

C # Chan ne l #
ED

T55

R55

Contact arrangement

29 -1657 - 64

3 17 - 24 65 - 72

11 - 849 - 56

4 25 - 32 73 - 80

5 33 - 40 81 - 88

6 41 - 48 89 - 96

Header

Female

T6

S6

T2

S2

R2

T50

S50

R50

Channel 2 Channel 3 Channel 4

T1

S1

R1

S49

Channel 1

Header

Female

T49

R49

Header

Female

Channel 5 Channel 6 Channel 7 Channel 8

R6

S54

T5

S5

R5

S53

Header

Female

2.8 mm

T54

R54

Header

Female

T53

R53

Header

Female

Flat Tabs

Pin

Header

Page 8 of 12

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 cable
ties 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 the
channels 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 to
customer’s needs there are two large and separate labeling strips, one for the bottom and one
for the top row.

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NPPA-TT-E56 Instruction Manual

To 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 Electrical

Frequency range: DC to > 50 MHz
Digital suitability: Digital audio acc. to AES/EBU
Channel separation: > 100 dB @ 10 kHz, 600 Ω terminated

> 40 dB @ 6 MHz , 110 Ω terminated
Insulation resistance: > 10
Connector contact resistance: < 20 mΩ
Switch contact resistance: < 25 mΩ
Dielectric strength: 1000 V dc

7.2 Mechanical

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

9

Ω @ 500 V dc

7.3 Materials

Jack housing: PA 66 blend
Jack contacts: CuSn6 – TRIBOR

®

plated (0.2 µm AuCo over 2 µm NiP)
Casing: Steel and aluminum, black coated
Front Panel: 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 specially

designed normalling mechanism (standard: half normalled bottom row)

• Integrated internal pre-wiring with selectable flexible grounding system

• 6 ELCO

• 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 Configuration*

NJ3TTA-4-HNB blocks of 2 channels half normalled bottom row cover ident color: clear
NJ3TTA-4-HNT blocks of 2 channels half normalled top row cover ident color: yellow
NJ3TTA-4-FN blocks of 2 channels full normalled cover ident color: green
NJ3TTA-4-P blocks of 2 channels parallel cover ident color: red
NJ3TTA-4-I blocks of 2 channels isolated cover ident color: orange

Accessories

NPPA-S Strain Relief bar
NKTT* Patch cords with NP3TT-1 plugs. Available in black, blue, green, red and

NPPA-NB Normalling bars for changing the normalling of all 48 channels

®

-EDAC® 56-pin male connectors

yellow. Lenght: 30, 40, 60, 90, 120 cm

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