ULTRAPATCH® PRO PX2000
User’s Manual
Version 1.2 May 2001
www.behringer.com
ENGLISH
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ULTRAPATCH PRO PX2000
Welcome to BEHRINGER!
Thank you very much for expressing your confidence in BEHRINGER products by purchasing the ULTRAPATCH PRO PX2000.
A patchbay allows to patch the audio signals of most components in your studio from a central point and send them to other units, which makes your entire cabling better structured and is indispensable for professional work. If you want to use your studio as effectively as possible then it is preferable to use a complete patchbay wiring scheme, but even less sophisticated patchbay solutions will benefit smaller studio configurations.
1. PATCHBAY CONFIGURATION
The majority of commercially available patchbays include two rows with 24 phone jacks each in a 19" 1 HU rack panel. On the rear, either a corresponding number of phone jacks or contacts for soldering signal leads can be found. Each group of four of these phone jacks forms one module. The configuration of some patchbays can be changed by inserting jumpers or turning individual modules.
With the BEHRINGER ULTRAPATCH PRO PX2000 you own an easy-to-use 24-patchbay offering phone jacks throughout, which can be operated in four different modes simply by setting a switch on the upper panel (example: module 17):
1.1 Parallel
In this mode, all terminals of one module are interconnected. This configuration doesn’t make sense at first glance but is used to split up and send one audio signal (e.g. aux send) to several destinations (e.g. effects devices).
1.2 Half-normalled
In this configuration, the contacts of the two jacks on the rear are interconnected. When you insert a plug into the upper front jack, the signal routed through the rear path is not interrupted. Only when the lower front jack is used will the rearpanel route be split up, so that the two upper and the two lower phone jacks are connected to one another. This configuration is called “input break” and is used mainly for insert paths. So you can easily patch the signal from a mixing console channel at the patchbay without interrupting the signal flow in the channel.
1.3 Normalled
Here, and in contrast to the “half-normalled” setup, the signal route of the rear phone jacks is interrupted when you insert a plug both into the upper and lower front jacks.
1.4 Open
This mode is used to connect devices such as sound modules or CD players having no inputs of their own. This saves space, as you can route the left and right outputs to one module (left - top; right - bottom) or patch two devices to one module (top and bottom). Effects devices and 2-tracks can be configured this way, so the inputs and outputs are positioned on top of each other.
Basically, the inputs are routed to the bottom and the outputs to the top rear-wall connectors. Avoid routing digital signals over a patchbay as the pulse signal used for the transmission of such signals causes heavy interference in analog signals. Additionally, normal patchbays change the impedance of the digital cable route, which causes interference in the digital path. Use the BEHRINGER ULTRAMATCH SRC2496 specifically designed for this and other digital signal-related functions.
Microphone inputs operate at a level several orders of magnitude lower than line levels (+4 dBu or -10 dBV). Therefore, they should never be routed via a patchbay. In any case, patching in a field with 48 V DC (phantom power) flying
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