REFLECTOR: GRT HXr USB expansion

Don Johnston numa at comcast.net
Wed Feb 12 06:02:28 CST 2014


Well then I'm confused.  The HXr has 8 serial ports. How are you connecting
11 serial devices?
On Wednesday, February 12, 2014, lawrence <ljepstein at hotmail.com> wrote:

> Still not sure why you are running out of ports.
> I have the exact same configuration with the HXr. I am using the GRT
> autopilot, but it still connects via serial port.
>
> On Feb 11, 2014, at 9:13 PM, Don Johnston <numa at comcast.net> wrote:
>
> EIS
> Com1
> Com2
> Nav1
> GPS
> Transponder
> Audio Panel
> AHRS1
> AHRS2
> AP
> VPX
>
>
> On Tue, Feb 11, 2014 at 4:09 PM, Glenn Babcock <
> glennbabcock at roadrunner.com> wrote:
>
> Hi Don,
>
> I have a GRT HXr and an Android tablet connected via Bluetooth.  Here a
> picture of my panel on the GRT forum:
> http://www.grtavionics.com/forum/viewtopic.php?f=19&t=189
>
> Despite having lots of toys connected I'm doing fine with 8 ports on a
> single display:
>
> 1. IFR GPS (GX60)
> 2. AHRS
> 3. SL30 (remote COM)
> 4. EIS
> 5. VFR GPS
> 6. TT22 (ADS-B out)
> 7. GRT AP
> 8. none
>
> My USB connections are:
>
> Port 1: USB data stick
> Port 2: USB Hub
> Hub 1: Sky Radar (ADS-B In)
>  Hub 2: Bluetooth (tablet network)
> Hub 3: none
>
> The only thing I don't have is the WAAS GPS, but that will replace the
> GX60.  Even if I had a second AHRS I would have enough ports.
>
> So I'm curious, what do you need 11 ports for?
>
> Regards,
> Glenn
>
>
> Regards,
> Glenn
>
>
> On Feb 11, 2014, at 1:29 PM, Don Johnston <numa at comcast.net> wrote:
>
> Not exactly...
>
> Here's what I posted:
>
> Update...
>
> I was just told by GRT that the USB ports on the HXr are not programmed to
> receive the type of signals from the avionics.
>
> They are setup for uploading the EFIS software, downloading flight data
> and *communicating with either XM weather or ADS-B devices.*
>
>
> The bottom line (at least as far as the reason the thread got started) was
> that I had about 11 devices that required serial ports. None of these
> devices were weather or ADS (or radar). Which meant there was no workaround
> for the requirement of a second EFIS screen to get additional serial ports.
>
> Respectfully,
> Don
>
>
>
> On Tue, Feb 11, 2014 at 12:14 PM, Lawrence Epstein <ljepstein at hotmail.com>wrote:
>
> Last week, the discussion over what the USB ports ended with a post that
> Carlos @ GRT said the USB was not available for expansion or anything but
> software upload and data download.
> Carlos is the expert, but I think he was mis-understood.
>
> Here is the USB section of the HXr installation manual:
>
> "USB
> The preferred m
>
>
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