power requirements for 174mc

draconis

Hello Sam and all . I have a few tech questions maybe someone can answer for me .

I have a asi 174 mc that I am using in conjunction with my 115mm mead 6000 series ed apo triplet on a vx mount at my home observatory .

Physical conditions require that my telescope pad be about 40 feet away (12.5 meters) from my lab area .

I am running hc (hand controller) cables and 3.0 video cables for this . I plan to use this

http://www.newegg.com/Product/Product.aspx?Item=9SIA24G28N3774 x 2 .

My question is what power the asi camera requires as I can get 120ma's without a power supply .

Would this be enough ? Just thinking of minimizing noise on the signal if I can . It is simple enough to add the power if it is needed .

Has anyone else run this camera on extended usb 3.0 ? I know the asi advise is to not extend it at all

but this is not practical for me and I am sure it can be done if powered and shielded correctly .

As a side note , if you have an avx mount and an asi camera that includes a 6 contact cable for auto guiding , you can buy a 2 dollar in-line coupler for cat5 and use it to extend the ridiculously short HC coil cable .

Sam@ZWO

USB3.0 is 10X faster than USB2.0

so the cable is more critical too

a usb 3.0 hub's distance cannot more than 1meter

so power supply is not the key point to extend the distance

you can have a look at here

http://www.ptgrey.com/tan/10341

draconis

Hello Sam , Yes I know the speed of 3.0 .That is why I am using 'Active' cable extensions that boost the signal so that no loss occurs .It is the same as what is suggested in the point grey literature 1.7 in your link .So my data part is covered . What I do not know is the power requirements of the camera .

120ma's can drop out over long distances to some degree .If the camera uses more than 80ma's I would boost it ,but I cannot find this spec .

The fiber optic extension in the 1.8 section is the ultimate way to make a remote run for an observatory .This would also allow for several 3.0's for more cameras or peripherals with no data loss .

Sam@ZWO

Draconis wrote:
Hello Sam , Yes I know the speed of 3.0 .That is why I am using 'Active' cable extensions that boost the signal so that no loss occurs .It is the same as what is suggested in the point grey literature 1.7 in your link .So my data part is covered . What I do not know is the power requirements of the camera .

120ma's can drop out over long distances to some degree .If the camera uses more than 80ma's I would boost it ,but I cannot find this spec .

The fiber optic extension in the 1.8 section is the ultimate way to make a remote run for an observatory .This would also allow for several 3.0's for more cameras or peripherals with no data loss .

the power consumption of 174 is around 400ma

I think use a remote computer to control the camera is a good way than fiber optic extension

most USB3.0 extender cannot beyond 5 meters