Neutrik NPPA-TT-S User Manual

INSTRUCTION MANUAL

NPPA-TT-S

PATCH PANEL “Easy Patch” | 96 Bantam (TT) Jacks,
Solder lugs

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.: BDA84-1/ 3102M0821

Update: 03.08.2009

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

NPPA-TT-S Instruction Manual

Index

1. Electrical configuration.................................................................................................3

2. Replacement of Jack Pairs..........................................................................................4

3. Reconfiguration by hand ..............................................................................................5

4. Grounding variations ...................................................................................................7

5. Wiring ..........................................................................................................................8

6. Cable retention to the unit............................................................................................9

7. Channel identification ................................................................................................10

8. Technical data...........................................................................................................11

9. Wiring Diagram..........................................................................................................12

10. Ordering Information................................................................................................13

Dimensional Drawings “Easy Patch” NPPA-TT

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 25 26 4827 28

Half Normalled Top

Half Normalled Bottom

S
R
T

S
R
T

S

T
R

TN

RN

Full Normalled

Parallel

S

S

R

R

T

T

S

S

R

R

T

T

S

S

TN

TN

RN

RN

TN
T
R

RN

Isolated

S

S

R

R

T

T

SS
R

R

T

T

S

T
R

T
R

Grounding

Common Signal Ground
Upper Row

Chassis Ground

Common Signal Ground
Bottom Row

Module Arrangement

Key

Top View

Soldering Pads

to connect

Individual Grounds to Common G r ound

NPPA-TT-S

Front panel

Cable retention bar

Top cover

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NPPA-TT-S 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-S 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-S 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-S 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).

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NPPA-TT-S Instruction Manual

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.

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NPPA-TT-S Instruction Manual

Grounding Variations

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.

5. Wiring

For access to the terminals remove the top- and bottom-cover with three cross-recessed screws
(M2.5x8) each fixed in a triangle.

Rear front for wiring

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NPPA-TT-S Instruction Manual

Standard solder lugs enable a reliable and long-lasting wiring.

Termination with solder lugs Solder bridges

Solder tags

6. Cable retention to the unit

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.
For large and heavy bundles there is an additional strain relief bar NPPA-S available. It is
attached to the casing with four screws.

Cable Retention Bar

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NPPA-TT-S Instruction Manual

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.

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.

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NPPA-TT-S Instruction Manual

8. Technical data

Print-Out software “Patch Label”

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

9

Ω @ 500 V dc
Connector contact resistance < 20 mΩ
Switch contact resistance < 25 mΩ
Dielectric strength 1000 V dc

8.2 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 178 mm (7”)
Weight 2.9 kg
Temperature range -30° C to +80° C

8.3 Materials

Jack housing PA 66 blend
Jack contacts CuSn6 – TRIBOR

®

plated

(0.2 µm AuCo over 2 µm NiP)
Housing Steel and aluminum, black coated
Front Panel AlMgSi 0.5 F22

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NPPA-TT-S Instruction Manual

9. Wiring Diagram

Wiring diagram

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NPPA-TT-S Instruction Manual

10. Ordering Information

Patch Panels
Part Number Description Configuration* Wiring Grounding

NPPA-TT-S 2 x 48 jacks half normalled bottom 288 solder terminals individual
NPPA-TT-S-FN 2 x 48 jacks full normalled 288 solder terminals individual
NPPA-TT-S-HNT 2 x 48 jacks half normalled top row 288 solder terminals individual
NPPA-TT-S-I 2 x 48 jacks isolated 288 solder terminals individual
NPPA-TT-S-P 2 x 48 jacks parallel 288 solder terminals individual
* fully loaded jack pairs only

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

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

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

Standard supply

The compact Neutrik ”Easy Patch” NPPA-TT-S consists of:

• Black coated steel casing with aluminium fittings

• 2 x 48 highly integrated Neutrik

designed normalling mechanism (standard: half normalled bottom row)

• Integrated internal pre-wiring with selectable flexible grounding system

• Solder lugs termination

• 2 Built–in cable retention bars

• 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 plier

• 1 Instruction Manual

NJ3TTA jacks with gold plated double contacts and specially

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