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Jensen Transformers VBH-1BB
ISO-MAX® Studio-Quality Video Ground Isolator / Corrector
Jensen Transformers VBH-1BB ISO-MAX® Studio-Quality Video Isolator / Corrector.
The Jensen Transformers
ISO-MAX VBH-1BB is a
single-channel, studio-quality, high-bandwidth ground loop isolator that can reduce ground current-induced interference,
such as "hum bars" by a factor of over 100, while also reducing audio hum or buzz in connected audio systems.
With bandwidth that extends from DC to 900 MHz and super-low 0.05 dB insertion loss, you can expect excellent picture quality, free of the visible effects of video interference.
Inputs and outputs feature isolated, true 75 Ohm BNC connectors. The VBH-1BB is housed in a sturdy metal enclosure, measuring 3" W x 4.5" D x 2" H.
Similar models are also available in 3-channle and 5-channel versions here.
Please do not confuse the VBH-1BB with similar (but inferior) products. Jensen Transformers' ISO-MAX Studio-Quality Video Isolators provide the ultimate signal interface solutions. They solve the fundamental problems associated with ground loops, without degrading signal quality.
If you're not sure which model to choose, please check out our Jensen Transformers Application Guide.
With inferior products coming from all over the world, we think it is a genuine treasure to find a company like Jensen Transformers, actually designing and manufacturing some of the finest products in the world, right here in the USA, and we are proud to be able to offer their products. The VBH-1BB is made in the USA, is backed by the manufacturer's comprehensive one-year warranty, and has a remarkable 20-year warranty on the transformer device itself.
Ground Loops?
(or why the best planned systems sometimes look bad)
It is a subject that is seldom discussed in manufacturers publications, or even in magazines of the trade, but ground loops can happen even in the most carefully planned A/V system. When ground loops happen in a video system, the result is unwanted hum or video hum bars.
For example, in front projection systems, the power supply for the source components are typically powered by a different electrical branch circuit than the projector.
When devices in the same system are powered by separate branch circuits, that can cause a difference in ground potential between the two pieces of equipment. It can be because one of the circuits is loaded more heavily than the other, or because one run is longer than the other, or any number of other reasons that are beyond the scope of this article, but the result of this difference in ground potential is commonly referred to as a ground loop.
Ground loops manifest themselves as "hum bars" and other visible artifacts in video systems. Quite often, these hum bars will appear crawl slowly up (or down) the screen as. To make matter worse, it is not uncommon for video ground loops to cause hum and noise in connected audio gear in the same system.
The Solution
The Jensen Transformers VBH-1BB is elegant in its simplicity. In the example above, one would simply insert the VBH-1BB anywhere in the video path between the source and the projector. Immediately, the effects of the ground loop become a non-issue. Problem solved. There are not too many things that one can install in a video system that can provide so much improvement with so little effort.
Don't Forget the Cables!
Good cables are very important in the fight against hum and noise. You will need short patch cables in order to insert the VBH-1BB into your signal path, and you may want to consider upgrading your existing cable(s) as well. The VBH-1BB does not include any cables, but if you need them, we have some very high-performance video cables available. Please click here to see them!
Jensen Transformers' Description
Jensen Transformers VBH-1BB
ISO-MAX® Video Ground Loop Corrector for 75 Ohm Systems
- 56dB of CMRR typ. at 60Hz minimizes ground loops
- DC to 900MHz bandwidth for excellent picture quality
- Greater than 1 Vrms 60Hz common-mode level handling
- VSWR under 1.1 at 100MHz to prevent waveform distortion
- Insertion loss of 0.05 dB maintains maximum S/N ratio
Here is another angle.
In this picture the BNC connectors can be seen clearly.
Shown here is the typical product packaging.
This data sheet includes physical dimensions and electrical performance specs. Click to download in PDF format.
Why Cable Solutions?
- Cable Solutions is an Authorized Jensen Transformers Distributor, so our customers are ensured full warranty protection and technical support. (Jensen Transformers is obligated to provide neither warranty nor technical support for products purchased from unauthorized resellers!)
- We stock this item locally so that it will be ready for immediate shipment, and no one works harder than we do to get your order shipped out to you fast! On business days, orders that are funded by noon will ship the same day. Orders funded on weekends or holidays will ship the next business day.
- Customer service is our first priority. We do our best to help you find the best solutions for your particular application. We're enthusiasts too, so we know what it's like to wait for cables and accessories that are needed to hook up new gear. We also know how important it is to be able to get a response when you need help, so you'll often find us working long hours in an effort to get you the answers that you need.
- If you have had enough of outsourced support or worse yet, companies that do not even publish a phone number or a functional email address, we think you will be absolutely delighted that you found our company. We know how important it is to be able to get help when you need it. That's why we have people, right here in Texas, ready to respond to your email or answer your phone call. If English is your language of choice, you will have the simple pleasure of communicating with people whose first language is English. Granted, if you call on the phone, you may detect more than a trace of a Texas accent, but that is to be expected when dealing with a family-owned business run by native Texans. We sincerely hope that you will find our heritage of courtesy, honesty, and an ethical way of doing business to be a refreshing experience.
Design excellence, high quality materials, meticulous workmanship, and superior service...put it all together and you get a superior product. Don't get stuck with bad advice, poor service, slow shipment or an inferior product. If you want the best, here it is.