On Aug 28, 9:09*am, John Galloway wrote:
At 15:33 28 August 2010, Canav8 wrote:I recently upgraded a 302A flight recorder at Cambridge. It has
the
USB port installed. I am now trying to use my laptop to download
the
data. Jeff over at Cambridge did not say what type of USB cable
was
necessary to download the files but there are different types of
USB
cables. I have a USB to USB for windows to transfer files from
one
laptop to another but I am having difficulty with the flight recorder
connecting to the laptop. I have already tried to change the port
numbers as suggested in other threads. Thanks for any replies.

Doug

By chance, earlier today, I mentioned to a computer literate friend
that I could not get my 302A USB to connect to any PC computer. *
When I try it the mouse pointer just jumps about all over the place. *
He suggested that I should disable Windows Intellimouse because it
sounds as if the the PC is thinking that the 302A is a mouse. *I
have not had a chance to try this yet.

John Galloway

Actually that likely is not the primary issue here, since I suspect
you are just using the wrong USB cable.

Does Cambridge not provide any documentation? Do they not provide a
cable? Especially since they make what looks like a weird type A
receptacle choice.

Judging by the number of problems I see people having with this
adapter, I'd not waste my time upgrading an existing C302 to get this.

Oh alright, since you seem eager,...

AFAIK the USB port in the C302 is just a generic USB to serial
adapter. The slide switch just connects the internal serial port to
the serial side of the USB adapter or to the "classic" DB-9 serial
connector. So the C302 adapter really has no benefit over an external
USB to serial adapter, so if you have one of those that already works
just use it. I like the Kesypan USA-19HS and have good results using
it with both Windows XP and recent Mac OS/X platforms. And buying this
adapter is probably several times cheaper than upgrading a C302 to add
the USB port.

As a slave device the C302 internal USB to serial adapter should have
a type -B connector and then any cable would work. But for some
unexplained reason Cambridge put an A- receptacle on the C302.

If you have a USB type A to USB type A cable that you use to network
between two PCs/laptops (aka a "peer-to-peer", "host-to-host", or "USB-
networking" cable) then it will have active electronics in it to
interface between two USB host devices. That would be the wrong type
of cable here, since you are connecting a USB-host and a USB-slave.

What you need here is plain USB type A male-plug to USB type A male-
plug cable, the type with no active electronics. These cables are
available but not all that common. You can also find USB type B
receptacle to type A plug adapters that you can plug onto the type B
(square end) of a conventional USB Type A to type B cable. However
don't go plugging two computers (USB hosts) together with these
cables, there is a slight chance of damage.

--

Once you have this working can you use the device manager in Windows
and give me some information on the chipset in the C302. Go to the
Windows device manager and look under "Universal Serial Bus
Controllers" and expand that list and double-click on what looks like
the USB to serial converter and tell me what is on the "General" and
"DriverDriver Details" panels.

Darryl