Echo, Echo+, 4G and 4G+

Continuing to push the boundaries of performance and value, Cold Harbour Supply is proud to announce that in addition to our industry-leading Echo builds, we will start to offer Echo+ intensifiers in our complete devices. The difference between Echo and Echo+ is simply the FOM rating. Echo intensifiers have FOM figures between 1600-2000, while Echo+ are 2000+. 

So functionally, what does 2000+ FOM potentially get you? As one of our blog posts pointed out, FOM is simply the product of Centre Resolution x Signal-to-Noise Ratio. This means that by guaranteeing a higher baseline FOM rating, you would be able to access either higher Resolution, or higher SNR, or potentially both. While standard Echo intensifiers hold their own and yield a very clean and rich image in many lighting environments (and in some cases, surpass US Gen3 performance), the higher performance numbers provided by Echo+ can be beneficial in demanding lighting or distance situations where some extra performance is required. 

Where does Echo+ stack up against Photonis' premium offerings - 4G and 4G+? On paper, Echo+ will provide the same performance as a 4G tube as long as the specs are equal. Echo+ simply has less stringent screen cosmetic requirements so the presence of factory dark spots may be higher than 4G. That being said, they fall well within acceptable operational requirements and is as follows:

 Spot Size Zone 1 Zone 2 Zone 3
0.009" - 0.012" 0 1 2
0.006" - 0.009" 1 2 4
0.003" - 0.006" 2 4 6


Taking this a step further, 4G+ is simply an even higher guaranteed level of performance that starts at 2300 FOM. Again, if the specs are equal, Echo+ intensifiers that may be available (although rare) at 2300+ FOM will yield similar levels of performance as 4G+, but at a much more palatable pricepoint. 

Just as we selected Photonis Echo as our primary intensifier line due to its phenomenal performance-to-price ratio, we feel that Echo+ takes this one step further and provides our users with an even higher tier of performance while still maintaining the same high level of value.