EXTRON CROSSPOINT 300 128 MATRIX SWITCHER DRIVER DETAILS:
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EXTRON CROSSPOINT 300 128 MATRIX SWITCHER DRIVER
Extron Crosspoint 300 Matrix Switcher - Xpt300 128hva
It just happens that on Extrons with dip switches which they refer to as sync termination switches in their manual on the back of the unit, you can set the impedance on the H and V Extron CrossPoint 300 128 Matrix Switcher to either ohms or 75 ohms - the same impedance required for digital audio! Voila, although Extron never designed the ports to carry digital audio, they should have this added benefit.
I say should because it appears some people, like Penngray, above, have not been able to achieve this on their Extron switch with the dip switches set to 75 ohms, while others have been able to. Maybe Penngray's switch itself is defective, the dip switches are defective or there is something wrong with the connectors.
Extron Crosspoint 12x8 Wideband Matrix Switcher for RGBHV & Stereo Audio eBay
That just Extron CrossPoint 300 128 Matrix Switcher really weird to me as technically it should not be possible. It just doesn't make any sense and I sure wouldn't buy an Extron expecting that to work for you. As the ports are switched bank by bank, not port by port, you cannot use one H port to send digital audio to one location and the V port to another digital audio signal to another location at the same time except for the Extron Matrix and as all of the ports on these models, including the sync ports, are actually individually switchable. Alternatively, Extron CrossPoint 300 128 Matrix Switcher guess you could use the R, G and B ports on one bank to pass the component video signals and then one of the R, G or B ports which are 75 ohms on another bank to pass the digital audio signal that corresponds to these component video signals, with all signals going to the same location.
But then that would use one entire bank of precious input ports and output ports just to pass one digital audio signal, with the other ports on that bank remaining unused.
I could not find any definitive answer anywhere stating whether or not an Extron Crosspoint, a professional grade piece of equipment, was safe to use with consumer grade devices. The only way to clear this up once and for all is to clearly explain both, and to test the output on an oscilloscope.
I decided to tackle this question so I borrow an oscilloscope from a retired electrical engineer friend of mine. His oscilloscope is old but it will get the job done and before we get Extron CrossPoint 300 128 Matrix Switcher the actual testing, let's clear up those two major points of contention. When I bought my initial Extron Crosspoint I wasn't paying any attention to which model I was getting beyond the number of available inputs and outputs.
Extron Crosspoint Series HVA Wideband Matrix Switcher With ADSP eBay
It wasn't until I learned of the different types of c-sync that I noticed the text on the lower right corner of the front panel indicating that the unit Extron CrossPoint 300 128 Matrix Switcher a feature called ADSP. Not knowing what this was I looked it up and found it defined in the manual for the series of Crosspoints; ADSP - Advanced Digital Sync Processing — An exclusive, all-digital process that regenerates the sync signal waveform and restores incoming sync level to 5.
This ensures a sharp, stable image for improved signal compatibility with any LCD, DLP, plasma, or other digital display device. Whether or not this is true is what I will be testing. If true, supplying this high voltage sync signal may be fine for professional equipment such as PVMs but could wreak havoc on the Framemeister. Extron calls these sync termination switches. The Extron CrossPoint 300 128 Matrix Switcher provide a way to condition non-TTL sync levels greater than 5 Vp-p, enabling the sync to be properly passed from input to selected output s. The matrix switchers have two sets of sync termination switches; one for horizontal or combined sync and a second set for vertical sync.
Each switch provides the option of selecting either ohms or 75 ohms. The 75 ohms position is required only for an input with non-TTL sync, greater than 5 Vp-p. The normal position is ohms.
I could not find any literature online specifically about the xi series of Crosspoints but the model number found on the side indicates that it is likely part of the series. This model has ADSP. This model is older and does not have ADSP.
The Extron CrossPoint Series is designed to route wideband RGBHV and stereo audio signals. Both 12x8 matrix switchers feature MHz (-3 dB).
This CrossPoint® 4x2 matrix switcher features MHz (-3 dB) video bandwidth, fully loaded, and is also fully compatible with RGBS, RGsB, HDTV, component.