Mouse Speed with PC USB mouse

Hi
Can somebody tell me how I can increase the mouse tracking speed of a normal non-mac usb mouse?
I have "Zoom Mouse" installed but this only helps for the touchpad, the mouse remains to be painfully slow.
Thanks!

There is a great utility for customizing any USB mouse its called USB Overdrive
http://www.usboverdrive.com
I use it with Logitech MX 510 and it works very well, i can even customize its extra buttons for Mac OS X specific functions.
MacBook Pro 1.83Ghz 1GB RAM Mac OS X (10.4.8)

Similar Messages

Too low(400Kbyte/sec) speed with USB MSI-6545 (and printer HP-1200, sc

Hello!
I Use motherboard MSI-6545(i850, with 3 USB 1.1 ports), printer HP Laserjet-1200 and scanner HP scanjet-5400. OS Windows Xp pro SP1.
2 cables USB are length 3m.
I have found that speed of downloading from scanner to PC and from PC to printer is about 400Kbytes/sec instead of 1500Kbytes/sec. Very very slow. Why?
The support of HP X( have forwarded me to you…
Can you help me?
Andrei Shakunov, President of BusinessLawyer inc., Russia

1) 3 USB 1.1
2)No
3) Sorry? no
Understanding why in Windows XP peripheral devices work in some times more slowly, than it is necessary, has encountered the strongest restriction of a bandwidth. That is USB allowed a maximum 400Кбайт/sec instead of 1.5Мбайт/sec. Especially it affects at scanning and a printing of the big graphic files.
Bought expensive firm cabels (according to a kind support HP.ru), has spent a heap of time …
At last, according to the friend has climbed in device manager in properties USB controllers (on mine i850 their two 2 sockets each). Also has been shocked by a phrase:
“ The table below shoes you how much bandwidth each USB controller is using. Each USB controller has a fixed amount of bandwidth, which all attached drivers must show ”. On the first controller – 12 %, on the second-20 %. Also it is not known how to increase them.
Who knows, how these values increase even up to 90 %?

Read/Write speeds with Airport Extreme and USB Hard Drives

Anybody know how fast the read/write speeds are with a USB hard drive and the Airport Extreme Base Station?
My Setup
I have a 17 MBP (2010) and a 13 MBP (2011) - no SSD's
MBP generally connect via 802.11n 5Ghz with a very strong signal
Gigabit connection on a Windows Desktop
I have a variety of external drives (7200, 5400, Drobo) at varying capacity (320GB, 2TB, 5.6TB)
Goals
Backup: Time machine
Backup: File copies of pictures and home videos (greater than 1GB files)
Backup: Crashplan
File sharing: Aperture libraries--not sure if that is possible or practical. That is something that I need to research further...but on the off chance people have experience with it.
Thanks!

ishjen wrote:
Anybody know how fast the read/write speeds are with a USB hard drive and the Airport Extreme Base Station?
Welcome to Apple's discussion groups.
Apple's AirPort base stations aren't known for fast file serving, but for most purposed they're fast enough.
I can't comment specifically on your Aperture plan, but with some software it's important to avoid simultaneous access by more than one user.

Problems with multiple USB devices. (Possible Low Power on USB Bus)

I believe I'm having an issue with the USB bus or one of my devices that I have installed on my iMac.
I purchased this iMac along with a printer (HP C4280 All-in-One) as part of a promotion deal. I also have wireless logitech USB mouse, and iPhone and an 80gb 5th Gen iPod.
My problem has to do with syncing the iPod and iPhone. Normally I have the printer attached to the iMac along with the USB mouse. Both devices function as expected. However I have problems when I connect the iPhone or iPod.
iPod Symptoms: When I connect the iPod the iPod screen shows the flashing red circle with a line but iTunes never launches and the iPod never syncs.
iPhone Symptoms: When I connect the iPhone the iPhone screen says Sync in Progress and iTunes does show the iPhone in the list of devices but a dialog appears giving me one of two messages (that I've seen so far) - [msg 1] Your iPhone is corrupt please disconnect then reconnect to restore. [msg 2] iPhone device timed out.
I've been dealing with this problem for a couple months and found that if I disconnect the printer (HP C4280) then connected either other device then everything works just fine.
I downloaded XCode 2.5 and launched the USB Prober utility. Then plugged in each device in turn and found some interesting findings.
When connecting the iPhone (1st attempt) the USB Logger reported; (iTunes displayed msg 1 from above)
128.517 [1] USB Device iPhone is violating Section 9.3.5 of the USB Specification -- Error in GetConfigDescriptor( wLength = 4)
128.520 [1] USB Low Power Notice: The device "iPhone" cannot be used because there is not enough power to configure it
128.528 [1] USB Low Power Notice: The device "iPhone" cannot be used because there is not enough power to configure it
128.629 [1] AppleIRController[0x2dc8e00]::RearmInterruptRead immediate error 0xe000404f queueing read, clearing stall and trying again(1)
When connecting the iPod (1st attempt) the USB Logger reported; (iTunes never showed that the iPod devices was connected)
938.797 [1] USB Device IOUSBDevice is violating Section 9.3.5 of the USB Specification -- Error in GetConfigDescriptor( wLength = 4)
938.801 [1] IOUSBCompositeDriver[0x39b9f80](IOUSBDevice) SetConfiguration (1) returned 0xe00002ed
938.900 [1] AppleIRController[0x2dc8e00]::RearmInterruptRead immediate error 0xe000404f queueing read, clearing stall and trying again(1)
When connecting the iPhone (2nd attempt) the USB Logger reported; (iTunes displayed msg 2 from above)
1789.023 [1] AppleIRController[0x2dc8e00]::RearmInterruptRead immediate error 0xe000404f queueing read, clearing stall and trying again(1)
1802.166 [1] AppleUSBEHCI[0x28a7000]::Found a transaction which hasn't moved in 5 seconds on bus 253, timing out!
1809.166 [1] AppleUSBEHCI[0x28a7000]::Found a transaction which hasn't moved in 5 seconds on bus 253, timing out!
I'm suspicious of the USB Low Power Notice. If this is true then I suspect the my iMac might need some type of repair. However I am also suspicious of USB Device violating the USB Spec Error. Although this is the message that appears when I plug in the iPhone or iPod I don't think I can assume that error relates to the iPod or iPhone. The error doesn't specify which USB Device is in violation.
My current workaround is to unplug the printer every time I sync the iPhone or iPod which is cumbersome. I'm also worried that repeated connecting/disconnecting of USB plug for the printer will over time damage the USB port.
I'm not sure what options I have here. Can anyone provide some suggestions or information that might provide some insight.
Best Regards,
xgnomex

A-Ha! Now I'm feeling like my 1.5 hours of reading this forum are not wasted, since I've found others with similar symptoms.
I've only had my iMac for two weeks today. I've got some new accessories & have experimented with the ones I've had awhile (various USB external drives). My model has 3 USB ports, one of which is taken by the keyboard, of course.
Over the weekend, I picked up an MS Office 2008 Upgrade and also an HP Officejet Pro L7680 all-in-one. I only mention the Office upgrade because I installed it on the same day as the printer, but it's possibly unrelated.
I actually have a Belkin 4-port hub--not the same one suggested in this thread, but externally powered with it's own A/C adapter. (It's a Hi-Speed USB 2.0 r-Port Hub, model F5U234 Rev.3, and I used it with a previous iMac G3 CRT with no problem.)
So with a LaCie 100 GB USB Mobile Drive in one of the iMac's ports, and the HP L7680 in the iMac's third port, or the HP via the Belkin hub in iMacs the third hub, here are some of the symptoms I've seen:
1) while browsing in Firefox, suddenly the mouse-cursor will "freeze" (get stuck) in a pull-down selector...sometimes it unfreezes, but eventually (like on the next pull-down menu) the keyboard & mouse will shut off (and if you wait & the iMac goes to sleep, the keyboard won't let me enter my unlock password when I wake the iMac with the Apple Remote)
2) when trying to open a document from the LaCie in MS Word, Word freezes and the keyboard & mouse go dead--terminal beachball--to restart the computer, I have to hold in the power button
3) when trying to print a message in Mail, Finder freezes (though the print job does finish)
These symptoms seem strange! Hey, it's just supposed to work, right? But everything has limits, so my question becomes, "how much stuff can I hook up at once?"
I wonder if this Apple article is addressing this issue:
http://docs.info.apple.com/article.html?artnum=25243
especially when it says "Two high-bandwidth devices or two isochronous devices cannot be connected to a single Universal Serial Bus (USB)."
So only two hi-speed USB devices can be connected "to the same bus" simultaneously? I'm not entirely sure I understand what "isochronous" means, but I'm thinking I need to peel my printer off the USB somehow, maybe via Airport Express--?
Does anyone know for sure about USB limitations? Thanks.
Also, xgnomex, how/where did you find that "USB Logger"? Is that something iPhone-specific, or is it an OS X log in a Library somewhere?

Problem with detecting USB devices.. something abt ehci-hcd??

Hi All,
I have a DELL E6410 laptop. I have a problem with connecting USB devices.
Whenever a power event (such as connecting/disconnecting of AC adaptor) happens, my laptop stops detecting any USB devices and any changes that happen on the USB ports. That is, say an external mouse is connected to the laptop, the mouse stops functioning, and if I connect a mouse/USB_stick or any such thing to the computer, the device is not detected.
dmesg output show that any connecting/disconnecting events are not detected by the computer. lsusb output too shows the same thing.
To solve the problem, I need to rmmod the module ehci-hcd and modprobe it back. That is, I have to run the commands rmmod ehci-hcd followed by modprobe ehci-hcd. Then, this problem goes away until the next power event happens.
This event does not happen all the time, but it happens very regularly.
Here are the kernel and laptop specs..
uname -a
Linux myhost 3.0-ARCH #1 SMP PREEMPT Tue Aug 30 08:53:25 CEST 2011 x86_64 Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz GenuineIntel GNU/Linux
Kindly help me on this issue.
Thanks

This is the output of kernel.log when I unplug my AC adaptor with the external USB mouse connected.
Sep 12 11:18:33 localh ost kernel: [ 591.015557] EXT4-fs (sda6): re-mounted. Opts: commit=600
Sep 12 11:18:37 localhost kernel: [ 595.478866] ehci_hcd 0000:00:1a.0: PCI INT A disabled
Sep 12 11:18:37 localhost kernel: [ 595.478919] ehci_hcd 0000:00:1a.0: PME# enabled
Sep 12 11:18:37 localhost kernel: [ 595.498827] ehci_hcd 0000:00:1d.0: PCI INT A disabled
Sep 12 11:18:37 localhost kernel: [ 595.498877] ehci_hcd 0000:00:1d.0: PME# enabled
After this the the mouse goes dead (the light on the mouse also goes off).
If I disconnect the mouse at this stage, there is no change in kernel.log. If I the mouse back too, there is no change in kernel.log.
Now, when I turn the AC adaptor on, this is the output on kernel.log
Sep 12 11:22:16 localhost kernel: [ 813.917712] EXT4-fs (sda6): re-mounted. Opts: commit=0
Sep 12 11:22:16 localhost kernel: [ 813.977405] NMI watchdog enabled, takes one hw-pmu counter.
Sep 12 11:22:16 localhost kernel: [ 813.977453] NMI watchdog enabled, takes one hw-pmu counter.
Sep 12 11:22:16 localhost kernel: [ 813.980838] NMI watchdog enabled, takes one hw-pmu counter.
Sep 12 11:22:16 localhost kernel: [ 813.980874] NMI watchdog enabled, takes one hw-pmu counter.
Sep 12 11:22:16 localhost kernel: [ 814.075104] ehci_hcd 0000:00:1a.0: BAR 0: set to [mem 0xd6970000-0xd69703ff] (PCI address [0xd6970000-0xd69703ff])
Sep 12 11:22:16 localhost kernel: [ 814.075148] ehci_hcd 0000:00:1a.0: restoring config space at offset 0xf (was 0x100, writing 0x10b)
Sep 12 11:22:16 localhost kernel: [ 814.075189] ehci_hcd 0000:00:1a.0: restoring config space at offset 0x1 (was 0x2900000, writing 0x2900002)
Sep 12 11:22:16 localhost kernel: [ 814.075256] ehci_hcd 0000:00:1a.0: PME# disabled
Sep 12 11:22:16 localhost kernel: [ 814.075279] ehci_hcd 0000:00:1a.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
Sep 12 11:22:16 localhost kernel: [ 814.075295] ehci_hcd 0000:00:1a.0: setting latency timer to 64
Sep 12 11:22:17 localhost kernel: [ 814.228224] ehci_hcd 0000:00:1d.0: BAR 0: set to [mem 0xd6950000-0xd69503ff] (PCI address [0xd6950000-0xd69503ff])
Sep 12 11:22:17 localhost kernel: [ 814.228246] ehci_hcd 0000:00:1d.0: restoring config space at offset 0xf (was 0x100, writing 0x10a)
Sep 12 11:22:17 localhost kernel: [ 814.228273] ehci_hcd 0000:00:1d.0: restoring config space at offset 0x1 (was 0x2900000, writing 0x2900002)
Sep 12 11:22:17 localhost kernel: [ 814.228310] ehci_hcd 0000:00:1d.0: PME# disabled
Sep 12 11:22:17 localhost kernel: [ 814.228324] ehci_hcd 0000:00:1d.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
Sep 12 11:22:17 localhost kernel: [ 814.228333] ehci_hcd 0000:00:1d.0: setting latency timer to 64
Sep 12 11:22:17 localhost kernel: [ 814.614404] usb 2-1.1: reset low speed USB device number 3 using ehci_hcd
At this point, the mouse comes back to life (its light begins to glow) and I can move the mouse pointer on the screen.
The output of the grep command that rwd gave is too big (16000 lines) to be pasted here..
Thanks,

Compatability with PCMCIA USB 2 & Zen Touch

Hi,
My laptop only has USB . built in so I have recently purchased a PCMCIA USB 2 card. It appears that the card is functioning correctly and there are no problems when used with my digital camera, printer or mouse. However, when I connect the Zen Touch it starts working initially...the player says that it's docked and it seems to communicate with the computer (bringing files up in MediaSource etc...) but as soon as I try to transfer files to or from the devide the computer crashes. Firstly MediaSource stops responding, then Windows entirely freezes meaning I have to hold the power down button to reset the machine.
Please, please, please can someone help me with this problem...it's driving me insane!!
Thanks, Tom.

I know it works properly on USB but I dont own a desktop PC to try try it on there. There was a suggestion that it may be that there is not enough power getting to the Zen from the USB socket but the software with the USB card shows the power levels and it is being supplied plenty of power.
I am becoming more curious about what is going on here becasue now I am unable to transfer music through the USB sockets on the laptop. MediaSource start to transfer then brings up and error saying that some other application is using the Zen or something along those lines.
Anyhow, I am now stuck because I dont have any other way of transferring music to or from the player.

NB200 running Windows XP - What's wrong with my USB ports?

I bought a new NB200 recently and have had a problem with my USB ports ever since.
Independently, both rhs ports operate fine with my Logitech wireless mouse - unless I attach it via a USB hub. When I use the second port to attach another device - in this case an external DVD-RW - the mouse simply freezes. Meantime, the DVD-RW itself is recognised by Device Manager, etc - ("Working fine - with plenty of available power output per port), but it nonetheless fails to work and Windows Explorer is unable to read any disc inserted in it.
Furthermore, the lhs USB port is pure decoration only; nothing I attach to it (even the mouse) will work, neither will the Sleep & Charge capability (at any of the 4 Modes).
I've uninstalled the USB controllers and ports using Device Manager which, after re-booting, continues to report that all's well, both with the devices I attach and the ports themselves, albeit i's still patently not!
I'm concerned that I'm still unable to create a recovery disc should the worst happen so can anyone help me resolve my conundrum, please?
Am I doing something wrong or, less likely to be the case, I'm sure, is there perhaps a fault with my machine??
Any advice would be helpful, please.
Regards
Bob

Thanks for the suggestion, Guys, but neither provided the solution. I'd already updated both BIOS and Chipset drivers to the latest available.
Incidentally, the OS is the version of XP that came already loaded - subsequently updated via Windows Update, of course.
Any further thoughts anyone??
Bob

Will the USB debug kit help me with the USB kernel panic?

Hi.
Some time ago I posted a question regarding USB trouble and got the answer that I have a 'kernel panic' (Thanks for that!). I did not do anything about it, I just did not use Memory Sticks etc. Now I want to try and solve the problem, because I hate it when things does not work.
I searched for 'kernel panic' to learn more, but I must admit that I did not understand much of it
Apple has something called 'mac OSX USB debug kit'. Can that solve the problem? Is it safe to run?
Any help will be greatly appreciated!
Regards, Littaol
iMac G4 Flat screen Mac OS X (10.3.9)

Hello again Littaol,
After a brief read of this page, I would not start messing with developer tools, scripts, programs and "kits", before having explored every other "human" solutions.
Firstly, I would simply try again to use my Memory Sticks.
Perhaps this model was not yet handled properly, but now causes no problem after you updated Mac OS X or after you installed a Security Update.
Secondly, do you have other problems with your USB ports?
Keyboard, mouse, printer, etc, all is going well?
Kernel Panics:
Yes, they are caused by a problem, not always but often a hardware problem.
Sometimes though, they come for "no reason" and never show up again.
However, they have almost completely disappeared now from our Mac OS X users' lives, or?
If they occur only one or two times a year, there's nothing to worry about.
Let us know.
Hopefully this first answer will wake some good ideas from one of the many helpful and knowledgeable members of these Discussions!
Axl

Hi guys, I recently got a new MacBook Pro with a USB Superdrive. A disc won't eject, does anyone know of a way to eject it? I'm in Morocco for the next 10 days so going to an Apple store is not possible. Any help would be gratefully received, thanks

Hi guys, I recently got a new MacBook Pro with a USB Superdrive. A disc won't eject, does anyone know of a way to eject it? I'm in Morocco for the next 10 days so going to an Apple store is not possible. Any help would be gratefully received, thanks

Five ways to eject a stuck CD or DVD from the optical drive
Ejecting the stuck disc can usually be done in one of the following ways:
1. Restart the computer and after the chime press and hold down the
      left mouse button until the disc ejects.
2. Press the Eject button on your keyboard.
3. Click on the Eject button in the menubar.
4. Press COMMAND-E.
5. If none of the above work try this: Open the Terminal application in
      your Utilities folder. At the prompt enter or paste the following:
        /usr/bin/drutil eject
If this fails then try this:
Boot the computer into Single-user Mode. At the prompt enter the same command as used above. To restart the computer enter "reboot" at the prompt without quotes.

K9N SLI with weird USB beeping and freezing

Greetings
I have a K9N SLI-F V2 MB that seems to have a weird reaction to USB devices. Right now I only have PS/2 devices plugged in (Keyboard & Mouse) and It seems to boot and run normally. I get only 1 "beep" immediately after the BIOS screen, and it runs XP just fine. If I replace the PS/2 mouse with a USB mouse, I will now get an addition "chirp" (I think of these more as a "chirp" because its a little faster than the "beep") during the BIOS screen, as well as the original "beep" right after the BIOS screen. One thing I discovered is that the number of "chirps" I receive is the same number of USB devices I have plugged in. So if I have a USB keyboard, mouse, and printer (3 USB devices) plugged in, I will get 3 "chirps" during the BIOS screen, and still get the single "beep" after the BIOS screen. The other thing is that whenever USB devices are plugged in, Windows will freeze, but with the PS/2 devices, it works fine. I cant really find a pattern to the freezing, sometimes during the log in screen, sometimes if the computer has been idle for a while, and sometimes while using browsers/applications/games, but it ONLY freezes when USB devices are plugged in. I have gone through each USB device and made sure that all the most recent drivers are installed. So whats the deal....any thoughts?
System info:
K9V SLI-F V2 nVidia 570LT SLI chipset Motherboard
AMI BIOS - MSI Ver. 1.1
AMD Athlon64 x2 5000+ 2.6 Ghz Processor (AM2 Socket)
4 Gb PC2-5300 DDR2 RAM
EVGA nVidia 9800GTX+ Superclocked Edition 512Mb
Seagate Barracuda 7200rpm-8mb Cache
Windows XP Pro SP3
Thaanks

Quote from: BringBackXP on 10-August-09, 02:02:19
Greetings!
Wonkanoby:
Yes I did a CMOS clear and replaced the battery with new. Bios was then updated to most current: v 1.1
Biggin101:
Wow, I dont feel alone. Yes some similarities. My thoughts are the same: I dont see how this could be OS related. I am currently trying a different memory setup too that doesnt seem to help really (2 x 1 Gb 800Mhz sticks in dual channel mode slowed to 667Mhz). Yes , I also test the same components in other systems with no problems, but when i get everything back on the MSI board, it starts again. I also have been getting the "device removed" message but for my rear audio plug. Since the new PSU I installed certainly have seen a reduction in these odd occurrences, but no total solution.
My board has the nV 570 chipset
hows your PCIe Slots, running on all x16 lanes?
TP:
Ill go ahead and post all Specs I can remember, and get as many details as I can later when Im back at that computer. Yes I have been using the MSI site for drivers/patches. XP has been installed a few times and then updated to SP3, so i dont really see what I could be missing. Looking in the BIOS I dont see anywhere to manually select x16 lanes for the PCIe slot. everything has been reinstalled as if it were the 1st time out of the box
thanks guys!
(PC specs in signature)
I too have seen a bit of difference since PSU upgrade,and this morning I transferred over 200 gig of files without a hitch,
Then went onto the next set of files,another 100 gig or so and bam 30 seconds in(never even completed the first file transfer),PC locks up again.
And just when I thought I "mysteriously" fixed it.
Now I get a "network discovery" is not turned on message and when I turn it on it will not stay turned on.
That I believe is OS related.But due to the other issues I am experiencing I am not 100% sure.
Thank god I use Network Magic by Cisco,so I do not need Discovery to transfer files.
Only time I seem to have this lockup problem is when the USB drives are directly connected(any USB port,3 front,6 rear)
to the desktop PC in question.And none have the "extra" lead on Pin10 as per another post here.
I can connect to the network with these drives on any PC in the house,
I have 5 to choose from or my laptop and have no Transfer issues at all.
biggin...

Is is possible to access channels from a CAN database in labview with NI USB 8473s

Hello,
I would like to know whether is possible to access a CAN database, which is uploaded through MAX, in labview.
More specifically, I have uploaded my CAN database in MAX and I want to have access to each specific channel in labview.
i.e according to picture, I would like to have access to n_Motor_InsRpm channel of E1_L0_1 (motor speed) in Labview, so I can set and transmit a speed value through CAN. Could that be possible with NI USB 8473 s? If yes, is there any simple example in Labview ?
Thanks for your Help
Charis
Solved!
Go to Solution.
Attachments:
CANdb.jpg ‏11 KB

There are several ways to get database information without needing hardware. Here is one I did a while ago.
https://decibel.ni.com/content/docs/DOC-39793
Unofficial Forum Rules and Guidelines - Hooovahh - LabVIEW Overlord
If 10 out of 10 experts in any field say something is bad, you should probably take their opinion seriously.

Very slow transfer speeds with external hard drives through Firewire and US

Hi All,
My external drives transfer very slowly on my MacPro. I've been searching for answers and have turned up very little. Apple support suggested I post my issue here. Just to make a note, I measured my disk speeds with both AJA System Test and copying files between drives and reading the Disk Activity in Activity Monitor.
I have 3 external drives, all MyBook Premium or Professional, 1x 500GB, 1x 1TB and 2x 1TB in RAID 0. I had them on Firewire 400 and the RAID 0 2TB one on Firewire 800. My transfers on FW were all around 24MB/sec on all drives (much less than what I should be getting with FW400). I then read somewhere that the FW bus on the MacPro uses the slowest speed connected for all FW connections. So I unplugged everything but the FW800 Raid 0 drive and my transfer rate jumped to 40-60MB/sec. This is much better, but still about half or so of what I expect it should be producing from an external RAID 0 setup.
To keep my FW800 backup drive faster, I've plugged the other two into USB2.0. The transfer speeds on both drives are now hideous, around 10-15MB/sec. This is so slow, but I'm not sure what to try to fix my speeds.
The HD's in the external drives are all 7200rpm, and all should be transferring at a higher rate. Do you have any suggestions or ideas? Ideally I'd like to get everything transferring at rates they should be transferring at, but I'll settle with my current FW800 speed of 40-60MB/sec if I can get my other two drives transferring at a non-snail pace.
Is this a common issue? I can't believe I'm the only one plugging multiple external hard drives into their Mac Pro. I hope someone has a fix or solution for this. I'm all ears!
Thanks in advance.

Hi Kappy, thanks for the information.
So I rejigged my setup a tad. My RAID 0 is still FW800, the second drive is back on FW400 on the back port, and the third is USB 2.0 on the back as well.
It's interesting to note that I saw the FW800 taking a bandwidth hit if the FW400 drives was being read/written to. For example, if I was averaging 50-60MB/sec on the FW800 drives and copy something large to the FW400 drive, each drive averages out to about 30/MB second, roughly half the FW800 speed I was getting. The USB while the slowest didn't cause any slowness on the FW drives.
Here are my Xbench results. These results are from each drive being benchmarked individually with no other drives being tested at the same time.
*MyBook 2TB in a RAID 0 configuration: Firewire 800*
Results 75.42
System Info
Xbench Version 1.3
System Version 10.5.5 (9F33)
Physical RAM 16384 MB
Model MacPro3,1
Drive Type WD My Book
Disk Test 75.42
Sequential 80.92
Uncached Write 69.16 42.46 MB/sec [4K blocks]
Uncached Write 110.79 62.68 MB/sec [256K blocks]
Uncached Read 53.66 15.70 MB/sec [4K blocks]
Uncached Read 136.76 68.73 MB/sec [256K blocks]
Random 70.62
Uncached Write 36.38 3.85 MB/sec [4K blocks]
Uncached Write 140.55 45.00 MB/sec [256K blocks]
Uncached Read 93.26 0.66 MB/sec [4K blocks]
Uncached Read 88.38 16.40 MB/sec [256K blocks]
*MyBook 1TB on Firewire 400*
Results 47.73
System Info
Xbench Version 1.3
System Version 10.5.5 (9F33)
Physical RAM 16384 MB
Model MacPro3,1
Drive Type WD My Book
Disk Test 47.73
Sequential 52.47
Uncached Write 48.45 29.74 MB/sec [4K blocks]
Uncached Write 53.76 30.42 MB/sec [256K blocks]
Uncached Read 43.69 12.79 MB/sec [4K blocks]
Uncached Read 70.91 35.64 MB/sec [256K blocks]
Random 43.78
Uncached Write 17.29 1.83 MB/sec [4K blocks]
Uncached Write 98.83 31.64 MB/sec [256K blocks]
Uncached Read 76.33 0.54 MB/sec [4K blocks]
Uncached Read 97.01 18.00 MB/sec [256K blocks]
*MyBook 500GB on USB 2.0*
Results 40.60
System Info
Xbench Version 1.3
System Version 10.5.5 (9F33)
Physical RAM 16384 MB
Model MacPro3,1
Drive Type WD 5000AA External
Disk Test 40.60
Sequential 35.99
Uncached Write 37.31 22.91 MB/sec [4K blocks]
Uncached Write 37.22 21.06 MB/sec [256K blocks]
Uncached Read 26.62 7.79 MB/sec [4K blocks]
Uncached Read 50.27 25.27 MB/sec [256K blocks]
Random 46.55
Uncached Write 20.37 2.16 MB/sec [4K blocks]
Uncached Write 68.44 21.91 MB/sec [256K blocks]
Uncached Read 93.55 0.66 MB/sec [4K blocks]
Uncached Read 86.71 16.09 MB/sec [256K blocks]
So Kappy are you saying that those speeds look normal?
Thanks

Measuring speed with incremental single counter

Hi,
I need to measure the rotational speed and acceleration of a wheel that has 3 hall sensors on it. I will use only 1 of them en it gives 24 pulses 0-5V for a 360° rotation. How can I measure the speed with only a pulse train. I dont have the Quadric encoder...
Now I'd like to measure the rotational speed using a counter of some sort, but the software I tried writing for it isnt working.
Thank you for your help

Hey Nitch,
Concerning the measurements errors:
As you get error when speeding up, it looks like the pulses coming from the hall sensors are to short to get measured by the counter.
Following the USB-6008 specifications, the pulse needs to have a minimum lenght of 100ns (both in high and low state).
As a counter is using edges to count the pulses (for USB-6008 only the falling edge) the edges need to comply with the TTL specifications which means that the rise and fall time of the pulse needs to be within the 50ns range.
So please have a look at the pulse lenght at higher speeds (are they at least 100ns?) and make sure the pulse comply with the TTL specifications.
If not you will have to add some additional electronics to reshape the pulses.
Looking at your program.
It's not nescesarry to have two loops. It's very well possible to have two DAQ tasks within the same look.
Have a look at the Examples which come with LabVIEW --> Exampled Finder --> Hardware Input/Output --> DAQmx --> Synchronization --> Multi-Function.
There are some examples which so the combination of analog and digital input.
Anyhow you will have to remove the right while loop as the DAQ Express VI which apparently gives you the "spanning, stroom, gashendel" values will only start once you have done the counter measurements. I assume that you would like to have the "spanning", "stroom", "gashendel" and"speed" synchronized measured.
Then you have the choice to log to file during acquisition or after the acquisition.
If you would like to log on the fly don't use the express VI's, but use the lower lever "File I/O" functions. These are faster (less processor time usage).
As you VI is written now, the left while loop will only output the lastest counter value measured to the next loop when you click the stop button for example.
You have to "Enable Indexing" of the m/s output tunnel. Right click on the tunnel and you will be able to select "Enable Indexing".
This way the application will automatically create an array and each loop iteration the measured value will be added. One the measurements have been done you can do analysis and save the data using the full array instead of point by point.
Again, also bring your "spanning, stroom and gashendel" inputs to the left loop.
In your right loop you also have a loop counter.
You can simply use the loop iteraction counter (the square box in the left bottom corner with the i). This is also counting from 0 and incrementing by 1 each loop iteration.
Again, you can do this in the left loop and forget the second loop completely.
Hopes this will bring you a step further.
Don't hesitate to post the VI itself. This is always easier to look at than an image.
This way we can also make some modications and post it back.
Best regards,
Joeri
National Instruments
Applications Engineering
http://www.ni.com/ask
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New Keyboard Not Compatible With All USB Flash Drives

Hi,
I've noticed that the new super-thin iMac keyboards are not compatible with all USB Flash Drives. Here's an example.
I have 2 USB Flash Drives. One is a ByteStor 2GB USB 2.0 High Speed Dataferry Flash Drive, the other is a Kingston DataTraveler 1GB USB 2.0 Flash Drive. Neither of these drives used to work with the previous design of iMac keyboard, giving me the "low power" warning.
However, the ByteStor works just fine with the new super-thin iMac keyboard, but oddly enough, the Kingston DataTraveler doesn't. Does anyone know why this is? What's the difference? When buying a new USB Flash Drive, how do you know if it's compatible with the new iMac keyboard or not?

Thanks. Yeah the Kingston DataTraveler works just fine if I plug it into one of the USB 2.0 ports on the back of the iMac. But if I plug it into the new thin Apple Keyboard, it gives the low power warning.
http://www.amazon.co.uk/Kingston-Technology-1GB-DataTraveler-Flash/dp/B000AV14M2 /ref=pdbbs2/203-9795812-0230310?ie=UTF8&s=electronics&qid=1187109154&sr=8-2
Anyway, I'll try that new keyboard software update and report back.

I'm trying to restore my win7 with HP USB Recovery Flash Disk I get the following two messages

I'm trying to restore my win7 with HP USB Recovery Flash Disk I get the following two messages:
"Fail to Create C:\Users\User\AppData\Local\Temp; c:\arc\01Script\FormatUFD.sp" and messsage "Fail to create".
How do I port HP_recovery drive to my flash-drive?
Windows 7 x64, HP G62-144DX
This question was solved.
View Solution.

Hi:
I can't help you with that specific issue, but if you can't get it resolved and you can read the 25 character Microsoft Windows product key on the bottom of your PC, make your own W7 installation media to reinstall W7.
Here's how:
If you can read the 25 character Microsoft windows 7 product key, you can download plain Windows 7 ISO files to burn to a DVD for the version of windows that came installed on your PC, and that is listed on the Microsoft COA sticker on your PC's case.
Burn the ISO using the Burn ISO option on your DVD burning program and burn at the slowest possible speed your program will allow. This will create a bootable DVD.
Or use the Windows 7 USB/DVD installation tool to compile the ISO file you download from Digital River. Link and instructions below. You need a 4 GB flash drive to use the USB method of compilation.
http://www.microsoftstore.com/store/msstore/html/pbPage.Help_Win7_usbdvd_dwnTool
Use the 25 character product key on the PC to activate the installation.
The key will activate either a 32 or 64 bit installation.
Then go to the PC's support and driver page to install the drivers you need.
Link to the W7 ISO file downloads is below.
http://www.mydigitallife.info/official-windows-7-sp1-iso-from-digital-river/
Paul

Mouse Speed with PC USB mouse

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