REFLECTOR: GRT HXr USB expansion

[Glenn Babcock]

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 method of data transmission for newer devices is USB. Just like the USB port on your
> computer, an EFIS USB port is easy to connect and transmits large amounts of data quickly. USB
> devices do not require you to program a baud rate. The HXr has two USB ports that may be used
> for two USB devices, or you may attach a USB hub to run up to three devices. Some ADS-B units,
> such as the Radenna Skyradar, offer USB data transmission. Software updates are also delivered
> to the EFIS via USB– simply install the software update files onto a USB thumb drive from the GRT
> website, then install the thumb drive to the EFIS USB port. The EFIS will upload the files when you
> follow the Update instructions in the system Setup Guide. Most people choose to leave a USB
> extension cable plugged into the USB port for easy software updating. Flight and engine data may
> be recorded to a USB thumb drive as a “demo file” for later examination– a useful feature for
> collecting flight test data."
> 
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