High speed and Low Speed CAN

Hi
This is my first time to use CAN.
I have LabVIEW 2010 and LabVIEW FPGA
I have NI 3110 Dual-Core Industrial Controller with Windows OS, NI 9157, NI 9852 CAN Low Speed Module and NI 9853 CAN High Speed Module to be used to monitor the CAN messages from an ECU unit.
The connection is done as the following:
·         The High speed CAN is connected to the NI-CAN 9853 (Port 0)
·         The low speed CAN is connected to the NI-CAN 9852 (Port 0)
·         The baud rate of the 9853 is 500kbps
·         The baud rate of the 9852 is 50kbps
·         Both modules are set to “Listen Only”
·         “Module Clock” in both modules is set to 20MHz
·         CAN networks are 29-bit and 11-bit.
My consideration is to read all the messages from both modules without losing any message. Below is a picture from the block diagram on the FPGA target, is this the best way to read CAN messages from both modules? Also, could you please suggest what is the best way to read the messages on Host vi?
Unfortunately, I do not have the module right now to do some test, so that I cannot get the iteration time (“CAN Low Speed Loop” and “CAN High Speed Loop” show in the picture below), could you please tell how to calculate the iteration time needed for each loop depending on the above information.

The way that you have proposed to use the CAN module to monitor the BUS is a bad idea. We have a prebuilt driver that will do most of this work for you. You will need to download and install the NI-CAN 2.7.3 and then you will be able to use the example finder. In the example finder look for.
The example finder is accessed through the Help menu.
Jacob K || Applications Engineer || National Instruments

Similar Messages

Need help, high ping and low speeds almost constan...

Hello. Over the past 5 or so days my internet has been incredibly slow and I'd like some help.
My houses internet has been incredibly slow for around 5 days, I've regularly been checking speedtest.net and we have been having ~300-600 ping, 0.5 download and 0.1 upload, this is much lower than usual. I'm not sure if you know what's causing this but any advice would be greatly appreciated to help us get back upto speed!
If you need any information (stats etc) just link me to what I need to do and I'll post it!
Thanks, Josh!
Solved!
Go to Solution.

Or this -
ADSL Line Status
Connection Information
Line state:
Connected
Connection time:
0 days, 06:16:51
Downstream:
6.813 Mbps
Upstream:
448 Kbps
ADSL Settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.1 Annex A
Latency type:
Fast
Noise margin (Down/Up):
4.9 dB / 23.0 dB
Line attenuation (Down/Up):
43.4 dB / 25.0 dB
Output power (Down/Up):
19.9 dBm / 12.1 dBm
FEC Events (Down/Up):
0 / 1
CRC Events (Down/Up):
926 / 11
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
HEC Events (Down/Up):
2011 / 0
Error Seconds (Local/Remote):
798 / 9
Hide details

Whats the difference between high-density and low-density ram?

I bought what I thought was supposed to be a cheap 256 mb chip (pc100 or 133) but the g4 400 read only 128mb, The fellow in the store that sold it flipped out when I told him I had a Mac and said something about high density and low-density.Another guy in the store described it as being one sided and two sided.
I don't know what my machine needs. I got my money back but he would'nt let me exchange the chip for another, me thinking it was simply mislabeled.

The QuickSilvers use PC-133 SDRAM and are compatible with high-density memory chips (256 Megabit), so that 16-chip 512 MB and 8-chip 256 MB non-ECC DIMMs are supported. A low density, 16-chip (128 Megabit) 256 MB DIMM is also supported.

What are the advantages of varying write speeds and burn speeds?

What are the advantages of varying write speeds and burn speeds?

The slower the speed, the fewer burn errors (or, in other words, you'll burn fewer "coasters"). I've always tried to burn at a slower speed, i.e. 2x - 4x. I'd rather wait a few minutes more and I've never had any burn errors.

High bytes and low bytes?

What are high bytes and low bytes? Thanks for helping.

This may not be enough information to answer your question. How and where are the terms High bytes and Low bytes used?
Often, a data type is represented using multiple bytes. For example, short is 2 bytes. Sometimes the most significant byte is the high byte while the least significant byte is the low byte.

High noise margin, low speed and repeated drop out...

Hi - I have a Home Hub 3 which is always dropping the connection. Unfortunately it gets re-booted alot as this seems to be the only way to get things moving again. I have just ordered a new router/modem to ss if that will hold the connection better but have been reading these forums and see that the Line Status and Speedtest are a good place to start. My Line Status shows a noise margin of 17.7dB - could this be my problem?
ADSL Line Status
Connection Information
Line state:
Connected
Connection time:
0 days, 03:09:09
Downstream:
7.781 Mbps
Upstream:
448 Kbps
ADSL Settings
VPI/VCI:
0/38
Type:
PPPoA
Modulation:
G.992.1 Annex A
Latency type:
Fast
Noise margin (Down/Up):
4.3 dB / 22.0 dB
Line attenuation (Down/Up):
33.6 dB / 17.5 dB
Output power (Down/Up):
19.8 dBm / 11.7 dBm
FEC Events (Down/Up):
0 / 2
CRC Events (Down/Up):
3000 / 5
Loss of Framing (Local/Remote):
0 / 0
Loss of Signal (Local/Remote):
0 / 0
Loss of Power (Local/Remote):
0 / 0
HEC Events (Down/Up):
1907 / 1
Error Seconds (Local/Remote):
794 / 6
Speed Test data via BT Wholesale site
D/L speed 3.78
U/L Speed 0.23
Ping Latency 68.38
and via BT domestic speed test
D/L Speed 5.74
U/L Speed 0.20
Connection Speed 7.97
Do you think noise is my problem and any suggestions please!!
Many thanks in advance
Andrew

Ha - many thanks the quick reply but I am un-masked already as not having a clue what I am talking about! A few hours spent reading up on things before I posted was not enough! I am plugged in to the test socket - have just done the quiet line test on 17070 from a corded phone and there is no noise. A bit of history - 18 months ago we had issues with water damage to underground lines to the house and we are now on the last usable pair (?) at that time I had all extension wiring reoved and new Master socket fitted. We have been OK but not spectacular since - we struggle to have 3 computers running off the net at times and I dont beieve we are getting anywhere close to our expected speed and then recently we have experienced drop outs and really slow speed as mentioned in original post.

DSL disconnects and low speed: Transceiver Statistics

So the technician changed my modem to an Actiontec GT784WN. I now have access to the transceiver statistics.
I've already had like 20 disconnections today and my speed -which can go up to 10000 kbps in the morning- dropped to 2000-4000 kbps. So I'm copy/pasting my stats here in case somebody can pinpoint a problem somewhere.
Connection : Status
Broadband:
CONNECTED
Internet Service Provider:
CONNECTED
PPP Parameter : Status
User Name:
N/A
PPP Type:
PPPoE
LCP State:
DOWN
IPCP State:
DOWN
Authentication Failures:
0
Session Time:
0 Days, 00H:00M:00S
Packets Sent:
N/A
Packets Received:
N/A
Broadband Parameter : Status
VPI:
0
VCI:
35
Broadband Mode Setting:
ADSL2+
Broadband Negotiated Mode:
ADSL2+
Connection Status:
CONNECTED
Downstream Speed:
4387 Kbps
Upstream Speed:
956 Kbps
Retrains:
6
Retrain Timer:
0 Days, 0H:0M:28S
ATM QoS class:
UBR
Near End CRC Errors Interleave:
4061
Near End CRC Errors Fastpath :
N/A
Far End CRC Errors Interleave :
91
Far End CRC Errors Fastpath :
N/A
30 Minute Near End CRC Interleave :
375
30 Minute Near End CRC Fastpath :
N/A
30 Minute Far End CRC Interleave :
0
30 Minute Far End CRC Fastpath :
N/A
Near End RS FEC Interleave :
0
Near End RS FEC Fastpath :
N/A
Far End RS FEC Interleave :
0
Far End RS FEC Fastpath :
N/A
30 Minute Near End FEC Interleave :
1998
30 Minute Near End FEC Fastpath :
N/A
30 Minute Far End FEC Interleave :
0
30 Minute Far End FEC Fastpath :
N/A
30 Minute Discarded Packets Downstream :
0
30 Minute Discarded Packets Upstream :
0
SNR Downstream :
5 dB
SNR Upstream :
9 dB
Attenuation Downstream :
47 dB
Attenuation Upstream :
26 dB
Power Downstream
19.5 dBm
Power Upstream
12.3 dBm

Sorry about not replying back sooner. Based on what I see here, you have a line that needs to be repaired by a field tech. Your attenuation is low in the morning hours when your connection is at a higher speed. As your connection degrades, your attenuation is going up while the speed goes down. That is typically the opposite, where a speed decrease causes the attenuation to also decrease a small amount.
Since you have big swings in speed, attenuation, and relative S/N margin, this is suggestive of a bad splice on the line.
If you have a landline with Verizon and you have static or other noise on the line, report that problem and do not mention anything about the DSL. If it's just with DSL, DSL Repair should be informed. Emphasise, and strongly emphasise that the solution is not to decrease your speed until that is concerned to be the final solution. A speed decrease won't fix this.
========
The first to bring me 1Gbps Fiber for $30/m wins!

Connection issues and low speeds

Hi there,
my family have been with BT now for about 3 or so years and the connection had been rather good until about late last year. According to my family it's everytime I come back home from uni the internet starts to play up as in:
. Low speeds
.Drops out and loses connection
Believing it was somehow my laptop causing the issues I backed everything up and completly wiped it because BT support thought it may be a virus on my machine even the the checks came back with nothing. So I've wiped my laptop and restarted it like it was a brand new laptop...still we're having these issues so I refuse to believe it's my laptop causing the problems. I've changed the chanel on the hub so many times it just doesn't make a difference. Tried different DSL adapters tried different cables even a wired connection causes problems. I am begining to think it's because the router has had it but I am willing to try anything at this point before asking for a new router from BT. Even BT don't seem to know what the problem is all they do is reset the routers chanel every single time I ring them.
So any advice or help would be greatly appreaciated
Many Thanks
Benjamin
PS - sorry for any grammar/spelling mistakes , I've written this in a hurry before the internet drops out again...

Hi Welcome to the community forums
Here is a basic guide to getting help from the community members done by CL Keith Please read through the link posted http://forumhelp.dyndns.info/speed/first_steps.html
once you have posted the information asked for then the community members can help you more
Thank You
This is a customer to customer self help forum the only BT presence here are the forum moderators
If you want to say thanks for a helpful answer,please click on the Ratings star on the left-hand side If the reply answers your question then please mark as ’Mark as Accepted Solution’

High latency and poor speed tests lately

For the past 4-5 days, I've been working with various Verizon techs to resolve a high latency/slow Internet problem. Their ultimate solution was that they have no idea why it's doing this, and since I can reach a few websites at full speed and their line tests show I'm operating at full provisioning, it's not their problem. "We can't control traffic outside of our networks." Well, my results are also showing problems with the Verizon servers, so I would think they should be more concerned. Most websites, however, exhibit the problem. So I'm stuck, looking for a better answer than "go away." Maybe some of you are experiencing a similar problem with latency or sporadic speeds?
My provisioning is 20M/5M. I'm in the L.A. area. (In the traceroutes below, I masked Hop 2 for privacy.)
I've experienced this problem with 2 computers (1 desktop, 1 laptop), both using Ethernet ports; one test using wireless on the laptop. I've plugged the router directly into the ONT coax to eliminate my house wiring as the culprit. Westell 9100EM router.
A few websites seem okay, and speedtest.net results always show provisioning at full speed to the L.A. server, but the problem persists when using the non-L.A. server. With speakeasy.net, even the L.A. server exhibits the problem. The latency gets worse as the night goes on, sometimes over 1000ms for some traceroute hops. In the morning, it seems to be back to normal.
Thanks for any help....
Jeff
Some examples...
In the past 2 mornings, I've had good results:
Speed Test (speakeasy.net, Los Angeles): ~ 19798K/4581K
Speed Test (speedtest.net, Los Angeles): always shows full provisioning ~19.74M, 4.56M, 19ms ping
Speed Test (speedtest.net, Dallas): ~ 19.81M/4.37M, 49ms ping
Tracing route to www.l.google.com [74.125.19.104]
over a maximum of 30 hops:
1    <1 ms    <1 ms    <1 ms myrouter.home [192.168.1.1]
2     8 ms     7 ms     7 ms xxxx.xxxxx-xxxxx-xxxxx.verizon-gni.net [173.55.xxx.xxx]
3     8 ms    10 ms     9 ms G4-0-6-1142.LSANCA-LCR-11.verizon-gni.net [130.81.140.122]
4    11 ms    53 ms    11 ms so-4-3-0-0.LAX01-BB-RTR1.verizon-gni.net [130.81.29.244]
5    13 ms    12 ms    12 ms 0.so-1-2-0.XL3.LAX15.ALTER.NET [152.63.10.133]
6    12 ms    11 ms    13 ms 0.ge-7-0-0.BR2.LAX15.ALTER.NET [152.63.116.157]
7     9 ms    12 ms    42 ms xe-11-0-0.edge1.SanJose3.level3.net [4.68.111.249]
8    14 ms    12 ms    17 ms ae-63-60.ebr3.LosAngeles1.Level3.net [4.69.144.52]
9    21 ms    34 ms    35 ms ae-2.ebr3.SanJose1.Level3.net [4.69.132.9]
10    26 ms    19 ms    19 ms ae-83-83.csw3.SanJose1.Level3.net [4.69.134.234]
11    21 ms    22 ms    22 ms ae-3-89.edge1.SanJose1.Level3.net [4.68.18.142]
12    23 ms    22 ms    23 ms GOOGLE-INC.edge1.SanJose1.Level3.net [4.79.43.146]
13    29 ms    34 ms    22 ms 209.85.251.98
14    20 ms    23 ms    19 ms nuq04s01-in-f104.1e100.net [74.125.19.104]
In the past 4-5 evenings, I've had poor results:
Speed Test (speakeasy.net, Los Angeles): ~ 2441K/194K
Speed Test (speedtest.net, Los Angeles): always shows full provisioning ~19.74M, 4.56M, 19ms ping
Speed Test (speedtest.net, Dallas): ~ 8.28M/1.22M, 49ms ping
Tracing route to www.l.google.com [74.125.19.105]
over a maximum of 30 hops:
1    <1 ms    <1 ms    <1 ms myrouter.home [192.168.1.1]
2     7 ms     7 ms     7 ms xxxx.xxxxx-xxxxx-xxx.verizon-gni.net [173.55.xxx.xxx]
3   531 ms   502 ms   514 ms G4-0-6-1242.LSANCA-LCR-12.verizon-gni.net [130.81.140.162]
4   519 ms   506 ms   530 ms so-4-3-0-0.LAX01-BB-RTR2.verizon-gni.net [130.81.29.246]
5   563 ms   564 ms   553 ms 0.so-1-2-0.XL4.LAX15.ALTER.NET [152.63.10.125]
6   577 ms   544 ms   524 ms 0.ge-6-1-0.BR2.LAX15.ALTER.NET [152.63.116.153]
7   477 ms   469 ms   459 ms xe-10-1-0.edge1.LosAngeles9.Level3.net [4.68.63.129]
8    11 ms    17 ms    19 ms ae-93-90.ebr3.LosAngeles1.Level3.net [4.69.144.244]
9   515 ms   559 ms   536 ms ae-2.ebr3.SanJose1.Level3.net [4.69.132.9]
10    20 ms    19 ms    19 ms ae-83-83.csw3.SanJose1.Level3.net [4.69.134.234]
11   524 ms   499 ms   544 ms ae-3-89.edge1.SanJose1.Level3.net [4.68.18.142]
12   490 ms   479 ms   464 ms GOOGLE-INC.edge1.SanJose1.Level3.net [4.79.43.146]
13    24 ms    22 ms    32 ms 209.85.251.98
14    23 ms    22 ms   489 ms nuq04s01-in-f105.1e100.net [74.125.19.105]
Solved!
Go to Solution.

MisterJefferson, your problem looks to be with hop #3. That is a Verizon router just after the gateway router for you. This will need to be addressed by a Verizon Network technician. Your hops to your router and your hop to the gateway look fine. Verizon will need to reboot that second router or re-route your hops.
Chernabog, yours is more difficult, you dont have any obvious big issue. However you do have a moderate jump at hop number 8. this is off the verizon network and is out on the internet. on one of the ATT routers. Unlikely you are going to be able to do anything about this. And as it is off the Verizon network, there would be nothing verizon could do about it either. Usually though, if it is a router needing rebooting, it will generally self correct after a few days. Or you could be unlucky enough to be going through a system that is overloaded or just plain old. This can be frustraiting. I myself play a lot of online games and if the server is in Washington DC (I'm in California) one of the hops I have to go through is in kentucky with sprintlink and their routers constantly give me a 500ms ping and I havent been able to get it corrected in over 4 years. Something we sometimes have to live with when it is out of our control.
====================================================================================
Error exists between keyboard and chair.

Sky Fibre constant drop out and low speed

Hi everyone,
Just recently switched provider from Plusnet fibre to Sky fibre and boy, has it been a stressful few days. First off, our fibre went live on the 6th of this month but these last couple of days I've been experiencing low speeds between 10-20 mb which I understand is meant to be normal (Never had this issue when I joined plusnet) and I have constant drop outs when I'm surfing the net or playing internet games on my Wii U
I've phoned Sky within the last two days and told them what's going on and they've done some tests on their end and they are telling me that I'm getting speeds up to 41 mb which I'm not getting, but they can't seem to understand why I keep having this drop out issue with my devices and my laptop and my gaming console. They have sent me a new hub, but I personally don't think sending out a new hub will make a difference. I've stuck a a Ethernet cable into my Sky fibre router and attached a openreach router, to the other end and see if that stops the drop out.
I'm inclined to leave sky, because I have a feeling this poor service will continue, unless someone can help me.
Thanks

Jan 1 00:00:07 syslog: BusyBox v1.17.2
Jan 1 00:00:16 syslog: Line 0: xDSL G.994 training
Jan 1 00:00:24 syslog: Line 0: VDSL G.993 started
Jan 1 00:00:31 syslog: Line 0: VDSL2 link down
Jan 1 00:00:34 syslog: Line 0: xDSL G.994 training
Jan 1 00:00:42 syslog: Line 0: VDSL G.993 started
Jan 1 00:01:01 syslog: Line 0: VDSL2 link up, Bearer 0, us=9995, ds=39998
Jan 1 00:01:04 syslog: ptm0.1 - WAN link UP.
Jan 1 00:01:04 syslog: Received valid DHCP lease from server. Connection UP.
Jan 1 00:01:04 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.97.46]
Jan 1 00:01:05 syslog: Send out NTP request to ntp1.isp.sky.com
Jan 1 00:01:05 syslog: Time has been set from ntp1.isp.sky.com
Aug 9 00:05:11 syslog: Received NTP Sync Reply from ntp1.isp.sky.com
Aug 9 00:11:49 syslog: eth2 (switch port: 1) Link UP 100 mbps full duplex
Aug 9 00:11:56 syslog: eth2 (switch port: 1) Link DOWN.
Aug 9 00:11:57 syslog: eth2 (switch port: 1) Link UP 100 mbps full duplex
Aug 9 00:12:04 syslog: eth2 (switch port: 1) Link DOWN.
Aug 9 00:12:06 syslog: eth2 (switch port: 1) Link UP 100 mbps full duplex
Aug 9 00:12:08 syslog: eth2 (switch port: 1) Link DOWN.
Aug 9 00:12:09 syslog: eth2 (switch port: 1) Link UP 100 mbps full duplex
Aug 9 00:12:21 syslog: eth2 (switch port: 1) Link DOWN.
Aug 9 00:12:22 syslog: eth2 (switch port: 1) Link UP 100 mbps full duplex
Aug 9 00:12:23 syslog: eth2 (switch port: 1) Link DOWN.
Aug 9 00:12:24 syslog: eth2 (switch port: 1) Link UP 100 mbps full duplex
Aug 9 00:12:32 syslog: Line 0: VDSL2 link down
Aug 9 00:12:34 syslog: Clear IP addresses. IP connection DOWN.
Aug 9 00:13:41 syslog: eth2 - WAN link UP.
Aug 9 00:13:41 syslog: Received valid DHCP lease from server. Connection UP.
Aug 9 00:13:41 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 00:19:01 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 00:47:49 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 01:22:53 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 01:51:41 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 02:24:57 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 02:54:57 syslog: Send out NTP request to ntp1.isp.sky.com
Aug 9 03:00:00 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 03:32:58 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 04:07:26 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 04:39:12 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 05:11:16 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 05:37:04 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 05:37:05 syslog: Send out NTP request to ntp1.isp.sky.com
Aug 9 06:01:57 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 06:30:27 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 06:54:27 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 07:27:25 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 08:01:35 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 08:25:35 syslog: Send out NTP request to ntp1.isp.sky.com
Aug 9 08:28:51 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]
Aug 9 09:04:13 syslog: Connection Up. SNO/MAC/IP: [A502155D006292/C03E0F9F81C4/151.231.102.13]

High Processor and Fan Speed

Hi I've had my 17" MBP for a few months now...
Until recently all was well. And now all of a sudden it is just going hard all the time, like there is always a high fan speed, and the widget I have shows an unusual amount of processing power.
And I'm only using very basic applications.
So any help would be appreciated

have you tried a restart?
are there any processes using a large amount of cpu?
open you activity monitor (applications > utilities > activity monitor)
at the top, choose all processes
click on the CPU tab to sort by highest CPU
anything running a large amount of cpu?

Repeated ADSL dropouts and low speed

I've drawn a blank here and I'm wondering if anyone has any suggestions?
Initially my connection was rated at somewhere between 7-10Mbps and it worked okay for just over a year at just shy of 10Mbps, but now I'm having problems.
A couple of weeks ago during the hot spell the connection kept repeated dropping, giving me a flashing broadband light on my homehub 3 Type A but the speed remained okay (about 7Mbps IIRC). Since then the drops have continued in bursts (sometimes it's okay for a day, other times it drops every few minutes for hours) and the speed has become increasingly worse to the point of barely usable.
Yesterday I was down to 4Mbps, today 2.5Mbps. Obviously I can't maintain a connection to gain an improved speed due to the dropouts.
I have the router connected directly to the master socket, I've tried a new filter, I've tried with and without the faceplate, I've checked the cable to the router and I've disconnected the phone and the sky box to rule those out. I've also left the router running with no devices connected to it whatsoever (wired or wireless) and it still loses its connection periodically. I can't think of anything external that would be affecting it that I've noticed, and I'm fairly confident I can rule out the weather because it's been going on longer than the current rainy spell.
The quiet line test gives me a very quiet line and calls are clean and clear when I phone people.
the latest stats taken from my homehub are:
Connection Information
Line state: Connected
Connection time: 0 days, 03:13:18 (note: This is due to a disconnection - I didn't powercycle the router)
Downstream: 2.997 Mbps
Upstream: 584 Kbps
ADSL Settings
VPI/VCI: 0/38
Type: PPPoA
Modulation: G.992.5 Annex A
Latency type: Interleaved
Noise margin (Down/Up): 19.5 dB / 18.7 dB
Line attenuation (Down/Up): 31.8 dB / 18.2 dB
Output power (Down/Up): 18.1 dBm / 9.9 dBm
FEC Events (Down/Up): 749108 / 60565
CRC Events (Down/Up): 6 / 811
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
HEC Events (Down/Up): 40 / 2174
Error Seconds (Local/Remote): 352 / 3180
and from the speedtest:
Download speed achieved during the test was 2.51 Mbps
For your connection, the acceptable range of speeds is 1.2 Mbps - 4 Mbps.
IP Profile for your line is 2.71 Mbps
Upload speed achieved during the test was 0.46Mbps
Upstream Rate IP profile on your line is 0.83 Mbps
Anything I might have missed? any suggestions?

Sorry if I caused any confusion there - this is the socket I have everything connected to (the only one in the house). previously it had a faceplate on it, but I removed that to see if it made any difference. It didn't.
The only thing that is currently connected is the homehub, via a filter. Previously a phone and a Sky+ box were connected, however I have disconnected them to see if it made any difference and only plugged the phone in for a couple of minutes to do the quiet line test.

E1200 Router with poor signal and low speeds

Hello, I just bought an E1200 router, which is downstairs and about 50 ft away from me. I have only about 60% signal strength, and my speed test when connected wirelessly is only 5mbit up,4mbit down. I plugged my computer into the router via ethernet and I get 30mbit up, and 5mbit down.
Are there any settings you could suggest to improve this? I tried several channels already, none above 60% it seems.
Thanks!

first>> http://www6.nohold.net/Cisco2/ukp.aspx?vw=1&docid=0a6881b90224439b92c8d8f19ca42e5d_21511.xml&pid=80&...
second>> reset the router. there is a button at the bottom, press and hold it for 10 seconds then leave it for 2 minutes.
third>> reinstall the router using the setup cd.

High level and low level grabs

Hi, I'm looking at different acquisition options. Fast acquisition is a priority as is fast processing. I'm a little confused on high level versus low level. Is there any benefit to which one is used? Or is it 6 one way and 1/2 a dozen the other. Thanks

If you feel comfortable using the Low Level functions I would personally recommend using them instead of the High Level. Bruce's answer is correct, high level will call low level with standard options selected. If you think of ways to improve the speed of your code, you may want to use low level, my reason is because high level VIs will actually be a function call calling other functions, which introduces a minimum delay, instead, if you use low level you are directly calling the functions for acquisition so there is kind of a small time saving if you think of it as acquisition wise.
Also, the high level VIs if you check their block diagram it has more structures for error checking, session ID checking, etc., so with low level you have direct control over the acquisitio
n from your main program without introducing innecessary structures or functions.
Regards,
Nestor Sanchez
IMAQ/Motion Support
National Instruments
Nestor
National Instruments

Bus Speed and Ram Speed Question..thanks

I have recently purchased my first mac! I purchased a refurb but I noticed that the one I purchased has bus speed of 800mhz and the ram has 667mhz. (I did get a 320g hard drive vs a 250g and a 256mb graphics card vs a 128mb) The other one has bus speed of 1066mhz and ram speed has 800mhz. Am I going to notice a difference in the bus/ram speed difference or just stay with the one I purchased?
thanks

I don't think you will notice a difference. Other system factors (such as video card, system CPU clock speed, amount of RAM installed, speed of hard drive, etc.) will most likely overwhelm any noticeable difference cause by the slower bus speed.
If the price of the refurb was good, you should keep it. I have an online Apple Store refurb myself, and although I know that the latest iMacs are a bit faster, I don't see how that extra speed will be of great benefit to me. I'm much happier with the money I saved on the refurb compared to a new iMac.

High speed and Low Speed CAN

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