NEUTRIK NPPA-TT-SD50 Manual de usuario
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.: +423/237 24 24 Tel.: +41 44/736 5010 Tel.: +44 1983/811 441 Tel.: +1 732/901 9488 Tel.: +81 3/3663 4733 Tel.: +33 1/4131 6750 Tel.: +49 8131/28 08 90
Fax: +423/232 53 93 Fax: +41 44/736 5011 Fax: +44 1983/811 439 Fax: +1 732/901 9608 Fax: +81 3/3663 4796 Fax: +33 1/4131 0511 Fax: +49 8131/28 08-30
www.neutrik.com
Draft. Nr.: BDA82-0
Update: 16.01.2009
Data subject to change without prior notice. ©2007 NEUTRIK . ALL RIGHTS RESERVED.
INSTRUCTION MANUAL
NPPA-TT-SD50
PATCH PANEL “Easy Patch” | 96 Bantam (TT) Jacks, 50 pin
D-subminiature
Page 2 of 14
NPPA-TT-SD50 Instruction Manual
Index
1. Electrical configuration.................................................................................................3
2. Replacement of Jack Pairs ..........................................................................................4
3. Reconfiguration by hand..............................................................................................5
4. Grounding variations ...................................................................................................7
5. Wiring ..........................................................................................................................9
6. Cable retention to the unit..........................................................................................10
7. Channel identification ................................................................................................10
8. Technical data ...........................................................................................................12
9. Wiring Diagram..........................................................................................................13
10. Ordering Information................................................................................................14
Dimensional Drawing NPPA-TT-SD50
Front panel
Cable retention bar
Top cover
Page 3 of 14
NPPA-TT-SD50 Instruction Manual
1. Electrical configuration
The Neutrik ”Easy Patch” is fitted with high quality, long life NJ3TTA double contact jacks (2 x
48) with drastically improved contact integrity. The NJ3TTA double contact jacks are gold plated
and prewired. The Neutrik ”Easy Patch” is an innovative and compact patching system (just 1 U
high) for 19” rack mounting. Robustly housed in black coated steel casing and featuring
precision aluminum fittings it is built to last. The Neutrik ”Easy Patch” is suitable for analog and
digital audio signals.
The new generation of the Neutrik ”Easy Patch” is easily programmable for any out of five
electrical configurations:
•half normalled bottom row
•half normalled top row
•full normalled
•parallel
•isolated
The programming feature allows to set all possible switching configurations inside the jack pair
with a specially designed mechanism and individually for each channel.
Configuration Chart
The standard configuration on ”Easy Patch” NPPA-TT-SD50 is half normalled bottom row.
Modules NJ3TTA-4-.x. consisting of two “Plug-in Units” (or four jacks NJ3TTA) with
prefabricated normalling are also available.
Page 4 of 14
NPPA-TT-SD50 Instruction Manual
2. Replacement of Jack Pairs
Each individual jack pair can be exchanged or re-configured without fuss even while the unit is
“on air”. For replacement or re-configuration just remove the easy accessible module consisting
of two “Plug-in Units”.
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
Page 5 of 14
NPPA-TT-SD50 Instruction Manual
Alternatively the jack pairs may be pulled out by the use of two
Bantam plugs (diagonally plugged in).
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
For easy and safe modification work we recommend our preconfigured jack pairs (NJ3TTA-4-*).
Please note, in case of emergency the normalling can by changed by hand by the use of
normalling bars.
The two jack pairs are separated by spreading apart the rear
parts to unlock the fixing mechanism till it is possible...
Page 6 of 14
NPPA-TT-SD50 Instruction Manual
...to slide the jack pairs against each other in axial direction.
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).
Page 7 of 14
NPPA-TT-SD50 Instruction Manual
4. Grounding variations
The patch panel is terminated with 4 Sub-D connectors each of them corresponding to groups
(Sub-D groups) of 12 channels. Each Sub–D connector has only two ground contacts:
•one for the top row connecting all top row ground contacts
•one for the bottom row connecting all bottom row ground contacts
Each Sub-D group is configured by its own jumper block. The flexible grounding system
provides the following alternatives to choose from:
•Chassis Common: All channel grounds (top & bottom row) are
connected via PCB and jumpers to the patch panel
chassis as standard (delivery configuration).
•Sub-D-Group-Central: Ground contacts of top and bottom row are
connected but separated from chassis.
•Sub-D-Group-Chassis Top or Bottom:Either top or bottom ground contacts are connected
to chassis.
•Floating of individual channels: The ground contacts of top and/ or bottom
jacks of each channel can be disconnected
from a Sub-D Group by cutting the tracks
between the corresponding solder pads.
Page 8 of 14
NPPA-TT-SD50 Instruction Manual
Jumper
S
etting Floating
Grounding Variations
Note:
Phantom powered microphones
In general it is not recommended to run phantom power through patch panels.
In the case it is required to patch phantom powered microphones, all of the shields (SLEEVE contacts)
from this device must be tied together. This can be accomplished by grouping the grounds of these
channels via the PCB bus (using solder bridges). This group is then connected onto the general technical
ground. Because of the missing SLEEVE normalling contact it is necessary to wire internally the ground
(sleeve) contact of the top and bottom row of each channel. If this is critical with respect to possible
ground loops make the connections via patch cable instead of using the normalling feature.
Page 9 of 14
NPPA-TT-SD50 Instruction Manual
5. Wiring
Four Sub-D connectors with 50 pins each enable fast and easy wiring even with the patch panel
installed in the rack.
Rear front for wiring
50 pin Sub-D connector terminal (SD50)
Pin Header
Page 10 of 14
NPPA-TT-SD50 Instruction Manual
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.
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
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
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