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david_taurus83

ASI1600MM Pro through Startech USB hub

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Bit of a long shot, but is anyone here using a 1600MM Pro through a Startech USB 2.0 to CAT 5 extender? My Startech hub has been brilliant since I got it. Works great with DSLR, ASI120 and mount plugged in. Never have any drop outs unless a battery dies. I set up my new 1600MM last night indoors and tried to avail of the 2 extra ports on the 1600 for the EFW and ASI120, with the single USB3.0 cable into the Startech. Everything connects fine but after looping for a few seconds PHD hangs and trying to snapshot a quick exposure of the main camera in APT I just get the dreaded BUSY... Tried swapping the supplied 3.0 cable for a good quality 2.0 one and it makes no difference.

 

Revert back to original cable management but with 1600 plugged into the laptop, everything is fine. I tried a 15m USB 2.0 extender cable and even with both EFW and 120 plugged into the 1600, and then plugged into the 15m cable, that works a treat. I left PHD and APT looping short exposures for a good while and the download times were less than a second. Not the end of the world, I've ordered another USB 2.0 extender for the EQMOD cable as its a bit of a faff to set up the Startech just for the mount. I'm just a bit annoyed as the Startech cost me 100 quid as they are supposed to be the bees knees and its trumped by a cheap and cheerful £10 cable!

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The Startech device is  only USB 2.0 (don’t make USB 3.0 version) hence the busy notice, as the date flow is slower over USB 2.0.. 

But that said, you have no such issues over a USB 2 extender cable....very strange indeed, I used the same Startech device for a couple of years and it was superb... :)

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I tried using a USB 2.0 hub, with abject failure. I have since updated to a StarTech USB 3.0 hub with everything connected through it, apart from the Mount (AZ-EQ6) which prefers a USB 2.0 connection.

But I also site a PC locally, so never any extenders (which I have always found problematical).

 

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4 minutes ago, LightBucket said:

The Startech device is  only USB 2.0 (don’t make USB 3.0 version) hence the busy notice, as the date flow is slower over USB 2.0.. 

But that said, you have no such issues over a USB 2 extender cable....very strange indeed, I used the same Startech device for a couple of years and it was superb... :)

Yes, it is strange. If I took the 120 out of the 1600 and plugged back into the Startech then PHD looped fine again but 1600 still hung. Even with a 2.0 cable. The settings box in APT where you select the gain showed it connected as 2.0. My laptop is only 2.0 anyway so no point getting a 3.0.

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What USB limit have you set in the ZWO\ASI driver for the camera?, try setting it lower.

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1 hour ago, Dr_Ju_ju said:

What USB limit have you set in the ZWO\ASI driver for the camera?, try setting it lower.

40

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I've not used a usb 3.0 camera myself, but you have to bear in mind that if you connect a usb 2,0 hub to a usb 3,0 port then the hub will only run at the total bandwidth of usb 2.0 so if you have 4 ports each one will be 1/4 usb 2.0 speed. There may also be incompatibilities. So probably best to get a usb 3,0 hub.

Louise

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I use the startech usb cat 5 extender with Asi 1600 and asi 120 without issues. I have the mount plugged in to one port. The Asi 1600 plugged into another and i use the 1600 to connect the 120 and the Efw. I've run like this for 2 years and the only issues I've had are when i use the black cables that came with the asi cameras. When i use the grey one that came with 1600 and the blue one that came with the 120 it works a treat.

Richard.

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1 hour ago, Allinthehead said:

I use the startech usb cat 5 extender with Asi 1600 and asi 120 without issues. I have the mount plugged in to one port. The Asi 1600 plugged into another and i use the 1600 to connect the 120 and the Efw. I've run like this for 2 years and the only issues I've had are when i use the black cables that came with the asi cameras. When i use the grey one that came with 1600 and the blue one that came with the 120 it works a treat.

Richard.

Thanks Richard. What capture program do you use? I tried both APT and Sharpcap and they both hung. The EFW works fine btw. I got another active cable today for the mount so not a deal breaker really. Just waiting for clear skies!

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4 minutes ago, david_taurus83 said:

Thanks Richard. What capture program do you use? I tried both APT and Sharpcap and they both hung. The EFW works fine btw. I got another active cable today for the mount so not a deal breaker really. Just waiting for clear skies!

I use Sequence Generator Pro. 

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7 minutes ago, Allinthehead said:

I use Sequence Generator Pro. 

Might be why then. It clearly all works through a single USB port on the laptop but I'm not going to risk the next clear night experimenting. Thanks

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21 minutes ago, david_taurus83 said:

Might be why then. It clearly all works through a single USB port on the laptop but I'm not going to risk the next clear night experimenting. Thanks

Yes you're right not to mess about with clear sky. You should experiment during the day.

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