WPA 2 slows data rate on ATV 3

Hi there
I have Apple TV 3 and Airport Extreme connected by wireless. With WPA 2 enabled on the AP and 802.11n (5hz) selected the data rate is 65 Mbs. With WPA 2 off I get 144 Mbs. Does anyone have any ideas with this problem? I don't want to run on an unsecured network. Thx.

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Apple tv slow data rate

HI Guys, i have a problem with one of my Apple TV. I currently have 2 Apple TV and one is having a slow data rate. I have Apple AirPort Time Capsule 2TB (latest gen) with most devices running on wireless connection and I checked the data rate (from the base station) on one Apple TV is showing 65Mbps and on another its showing between 6-13Mbps. The signal reception on both AppleTV is excellent. I have tried unplugging, restarting and restoring the AppleTV with no luck. The model number on this AppleTV is A1427. Any other ideas?

Hi arustandi,
Thanks for the question. If I understand correctly, one of the Apple TV's has a slow connection. I see you have already done a bit of troubleshooting. I would recommend that you read this article, it may be able to help with the slow connection.
Wi-Fi and Bluetooth: Potential sources of wireless interference - Apple Support
Thanks for using Apple Support Communities.
Have a great day,
Mario

Strong Signal/Slow Data Rate

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How many wireless computers do you have? Are you experiencing the problem on all of them? Does your wireless card has wireless-N feature? If your wireless card does not have wireless N feature, set the radio band to standard-20Mhz channel and change channel to 11. Disconnect and re-connect to your wireless network and see if that fixes your problem.

Data rate slows over time: Using Time Capsule (4th) and AirPort Express (1st)

Time Capsule using Airport Express to extend network.
Over 3-4 days my data rate gradually gets slower and slower until I have to reboot both TC and AE.
Fresh reboot gets me 10Mbs or better for a while and then slows over time to 2Mbs or less.
I can cable directly to the ISP modem, taking TC and AE out of the equation, and its smokin fast
No hair left to pull out, so any help or suggestions would be appreciated.
Time Capsule (4th gen) - Model A1409
Version - 7.6.4
Wireless Mode: Create a wireless network
Wireless Security: WPA2
Channel: 149 (Automatic), 11 (Automatic)
Allow this network to be extended is checked
Radio Mode: Automatic
Multicast Rate: Low
Transmit Power: 100%
Use wide channels is checked
Guest Network is NOT enabled
Mac Address Access Control: Not Enabled
Connection Sharing: Share a public address
Using DHCP
One printer attached to Time Capsule
Airport Express (1st gen) - Model A1143
Version 7.6.4
Wireless Mode: Extend a wireless network
Wireless Security: WPA2
Channel: 11 (Automatic)
Mac Address Access Control: Not Enabled
Using DHCP

You have your wireless channels on auto.. it is usually better to control it.
You will notice I have different names for 2.4ghz and 5ghz.. then I can force the link to either band.
After you set Radio Channel selection to Manual,, click edit. You can then set the channels.
Lock the channels.. ie you take control and you set what the wireless channels will be.. when you extend wireless this works far better. The auto channel system has to run on the Extender.. but since the main base is fixed on the 2.4ghz so it will be also.. the only channel that can flap around is 5ghz (extender) since that is not under my control. Of course it is up to you to determine which channel works best.. I strongly recommend the upper channels for 2.4ghz and the lower channels for 5ghz.
So.. I have set 5ghz to 48 on the main base.. and the auto channel sets it to 149 in the extender.
One strange thing results from my setup .. (amongst many!!)
You cannot name the wireless for 5ghz in the extender.. so in my case the upstairs wireless extender has both 2.4ghz and 5ghz named TC24ghz.. nought that I can do about it. But it is not a big deal.
You can see the result in the wireless diagnostics. The last wireless I have put in the box.. it is named TC24ghz but is in fact running on 5ghz. That is just how the over automated system of the apple routers work.. If I could I would fix it.. and maybe shall via serial console at a later date.

Slow data transfer rates

I have a MacBook Pro - Retina with an Apple thunderbolt to gigabit ethernet adaptor which is connected directly to one port of a synology 412+Nas with Cat6 cable. I am experiencing low data rates when transferring large files (>1GB) usually less than 25Mb/s though sometimes peaking at 100Mb ( fora few seconds) The average rate declines throughout the file transfer. I have noticed that there is a repeated/ self recovering crash which occurs which is co incdent with a dip in the date rates. Having eventually found the crash report its detail is associated with Finder. I am not technically savy enough to interpet the report nor have I been fortunate enough to find the crash reports again!
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your profile will sort itself out after that period but if you are having disconnection with the hub resetting then there is a more serious noise problem. Check your phone line by dialling 17070 option 2 - should hear nothing - best done with a corded phone
Are you connected to the master or test socket or somewhere else? do you have extensions sockets and if so have you removed the orange bellwire from terminal 3 from the master and all the extensions as this can act like an aerial for noise. http://www.jarviser.co.uk/jarviser/bellwirenutshell.html
there is no point in getting the mods to fix your profile if you have a noise problem as you will be back to square 1 in a few days so better sorting problem first
If you like a post, or want to say thanks for a helpful answer, please click on the Ratings star on the left-hand side of the post.
If someone answers your question correctly please let other members know by clicking on ’Mark as Accepted Solution’.

Max Data Rate: AGP 2x?!

Bought myself a new MSI-KT6 Delta a few weeks ago (MSI-6590), and have had no problems until now.
First up, my GeForce 4 Ti 4600 decided to suddenly die. Random characters on the screen in text mode, flickery colours and corrupt pixels everywhere. Windows wouldn't detect it properly anymore.
Bought a new Powercolor Radeon 9600 XT with VIVO today. Downloaded the new drivers, and loaded up some Battlefield, all good. Runs nice and smooth. COD, Quake 3, etc, no problems at all.
Halo, however... BAD. Even with the basic graphics settings and no Pixel-Shading, it runs at 4 frames a second, and nothing I do changes this, from lowest to highest with Pixel-Shaders 2.0. Although there's a visual difference, it's just as slow.
So I loaded up ATI control Panel and used SmartGart to enable 8x and Fast-Writes... Rebooted, lots of flickering screen, and Windows XP is now software-rendering everything (Transparent menus take 100% CPU to fade in)
Wait for SmartGart to fix my graphics again, and it's all back to 4x and no fast-write.
Loaded up SiSoft Sandra, to check the settings in there...
Mainboard: "Max Data Rate: AGP 2x"
AGP Card: "Data Transfer Modes Support: 1x, 2x"
"AGP Bus is unused or AGP card not fully AGP compatible"
Er... should this be right? BIOS wont let me select an AGP speed, it's "Auto" and I can't select it. I'm a little concerned that my Motherboard may have been damaged! I'll go get the latest Halo Patch, but it doesn't change the fact that I can't use 8x or Fast-Write.
I'm a little apprehensive about flashing my BIOS, made more difficult by the fact that I have no working floppy drive.
CPU: AMD 2600+
RAM: 2x512mb DDR 333MHz Kingston
AlphaGremlin

Well, I updated the VIA drivers, and an updated Sandra. AGP is running at 8x, and Fast-Writes are enabled! I don't know what the hell SmartGart was going on about, but it appears to slunk away and disappeared completely from the ATI control panel since the last reinstall of drivers.
So there's one problem solved... but I don't know what's up with Halo... I can set it to the lowest settings and it still runs like an elephant with three legs, even with the -useff option for Fixed Function shaders... ah well, that's a matter for another forum, eh?
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AlphaGremlin

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Hi all,
I read the datasheet of NI-9022 and know that USB data rate can be 480Mb/s.
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I check my FPGA and RT code by save to RT disk and the result is pass. So I think my code should be correct.
Is that because the USB driver not installed into RT?
Should I install the USB driver into RT?
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According to this document: Data Storage Options for CompactRIO, depending on many conditions, such as complexity of processor
requirements, USB data can be transferred off the controller at
approximately 700 KB/s.
Also, you don't need a driver to get a USB mass storage device to work on the cRIO. Have a look at this document:
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Coleman Technologies

I have a question about Data Rates.

Hello All.
This is a bit of a noob question I'm sure. I don't think I really understand Data Rates and how it applies to Motion... therefore I'm not even sure what kind of questions to ask. I've been reading up online and thought I would ask some questions here. Thanks to all in advance.
I've never really worried about Data Rates until now. I am creating an Apple Motion piece with about 15 different video clips in it. And 1/2 of them have alpha channels.
What exactly is Data Rate? Is it the rate in which video clip data is read (in bits/second) from the Disc and placed into my screen? In Motion- is the Data Rate for video only? What if the clip has audio? If a HDD is simply a plastic disc with a dye read by "1" laser... how come my computer can pull "2" files off the disc at the same time? Is that what data transfer is all about? Is that were RAM comes into play?
I have crunched my clips as much as I can. They are short clips (10-15seconds each). I've compressed them with the Animation codec to preserve the Alpha channel and sized them proportionally smaller (320x240). This dropped their data rate significantly. I've also taken out any audio that was associated with them.
Is data rate what is slowing my system down?
The data rates are all under 2MBs. Some are as low as 230Kbs. They were MUCH higher. However, my animation still plays VERY slowly.
I'm running a 3GigRam Powerbook Pro 2.33GHz.
I store all my media on a 1TB GRaid Firewire 800 drive. However for portability I'm using a USB 2 smartdisk external drive. I think the speed is 5200rpm.
I'm guessing this all plays into the speed at which motion can function.
If I total my data rate transfer I get somewhere in the vicinity of 11MBs/second. Is that what motion needs for it to play smoothly a 11MBs/second data connection? USB 2.0 is like what 480Mbs/second. So there is no way it's going to play quickly. What if I played it from my hard drive? What is the data rate of my internal HDD?
I guess my overall question is.
#1. Is my thinking correct on all of these topics? Do my bits, bytes and megs make sense. Is my thought process correct?
#2. Barring getting a new machine or buying new hardware. What can I do to speed up this workflow? Working with 15 different video clips is bogging Motion down and becoming frustrating to work with. Even if only 3-4 of the clips are up at a time it bogs things down. Especially if I throw on a glow effect or something.
Any help is greatly appreciated.
-Fraky

Data rate DOES make a difference, but I'd say your real problem has more to do with the fact that you're working on a Powerbook. Motion's real time capabilities derive from the capability of the video card. Not the processor. Some cards do better than others, but laptops are not even recommended for running Motion.
To improve your workflow on a laptop will be limited, but there are a few things that you can try.
Make sure that thumbnails and previews are turned off.
Make sure that you are operating in Draft Mode.
Lower the display resolution to half, or quarter.
Don't expect to be getting real time playback. Treat it more like After Effects.
Compressing your clips into smaller Animations does help because it lowers the data rate, but you're still dealing with the animation codec which is a high data rate codec. Unfortunately, it sounds necessary in your case because you're dealing with alpha channels.
The data rate comes into play with your setup trying to play through your USB drive. USB drives are never recommended for editing or Motion work. Their throughput is not consistent enough for video work. a small FW drive would be better, though your real problem as I said is the Powerbook.
If you must work on the powerbook, then don't expect real-time playback. Instead, build your animation, step through it, and do RAM previews to view sections in real time.
I hope this helps.
Andy

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I apologize for posting in here but this board is SO much better than the Quicktime or Compressor boards, and it's all the same workflow anyhow!
What I'm wondering is what chokes H.264 videos. Is it low bit rates? High bit rates? Big dimensions? I have an 854x480 video at 500kbps and it looks great, but even on my PowerMac there is slight stuttering, and some alpha tester feedback I've gotten tells me that a lot of slower computers are choking on the video badly.
The file size is ridiculously small, so if increasing the data rate makes it easier to decode, that would be nice.

It's neither - or either, if you will. H.264 achieves unprecedented levels of compression, which means that it's a lot more CPU-intensive to play back in real time. It simply doesn't play well on older hardware. Even slower G5s for example have problems playing back full HD H.264, particularly if it's progressive. It also depends on your GPU - certain GPUs support H.264 decoding, thus significantly offloading the CPU.
One general rule, though: the higher your data rate at any given frame size and frame rate, the less work the decoder needs to do. I'd try to go for approx. 800 kbps at your chosen frame size and see if that helps.
HTH,
Ron

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For slow data acquisition (e.g. 1 sample / sec) in the case of using DMM, how to display those data in a chart / graph?
For this sampling rate, there will be only 1 point in the chart.
How to buffer them and display them in a sequence?
Or, any other method?
thanks

Here is a quick example showing chart, graph and XY graph. All YOU need to do is use a chart and wire your DMM reading right to it. Charts have their own built in history (you can change the buffer size by right-clicking > Chart History Length)
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Attachments:
MultiGraphs.vi ‏17 KB

LTE oversaturated? 3G data rates on LTE in Charlotte?

For the last couple of days I have noticed extremely slow LTE rates that are often even slower than 3G in some cases - particularly the uptown area, but also in the North Charlotte area where I live. I have confirmed the same issue with multiple people who also have Thunderbolts that they are experiencing drastically reduced data rates; however, I don't think this is phone specific. I remember just last week I could pull down at least 5-10mbps and send back even more. The rates I've been seeing recently are <=.1mbps down and about the same up. That's absurd. I can't even stream music at low quality at that speed.
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Exchange DAG Replication Data Rate

i need some information regarding DAG replication issue. In my environment there is two mailbox server. One DC and another in DR site. The connectivity between DC and DR site is VPN. Bandwidth is one MB. But in VPN connection have ping loss. The ping loss rate
1-2%. In my environment twodatabase.
one is single and another is under the dag member. when i move mailbox from single to dag database the move rate is so slow and sometimes database going to dismount. I think its happened as because connectivity issue.
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Hi Parvez,
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3. The DAG replication rate depends on the replication traffic.
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What's more, here are some helpful threads for your reference.
Planning for High Availability and Site Resilience
http://technet.microsoft.com/en-us/library/dd638104(v=exchg.150).aspx
Exchange 2010: Collapsing DAG Networks
http://blogs.technet.com/b/timmcmic/archive/2011/09/26/exchange-2010-collapsing-dag-networks.aspx
Hope my clarification is helpful.
Best regards,
Amy
Amy Wang
TechNet Community Support

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WAP4410N firmware 2.0.4.2 bug: 300Mbps data rate not possible

I've spent parts of the past five days buying and exchanging several WAP4410N units because I was not able to achieve anything close to a 300Mbps data rate. I also tried various wireless-n network cards which were known to be configured correctly for 300Mbps speeds with no luck.
The highest speed I was able to achieve was 130Mbps, which is an indication that channel bonding is not in effect.
Then I came across another post in the forums:
WAP4410N does not exceed 130Mbps in N mode at close range.
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Cisco, please fix this firmware!
Edited to add: I found another post regarding the same phenomenon:
WAP4410n LIMITED TO 130Mbs in N-mode

Hi James,
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Best regards,
Brad

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No problem.... Look at it this way.... back in the days with autonomous, you could roam from one ap and not roam to the next two while walking down the hallway. So in high density, you want to have some sort of control on how many clients you want in a cell or on a particular AP. People always asked.... why an i connected to an ap 20 feet away and not the one above me. Well for one, the client chooses and also why would it roam is it is still connected at a rate that you are still supporting. There are so many tweaking involved with high density, well at least I do a lot of tweaking, but its so I can control the cell size for AP's in a high density area compared to areas where I need to extend the cell size a bit more. Data rates and TX power work hand in hand when determining this.
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Scott
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WPA 2 slows data rate on ATV 3

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