What's the purpose for the resistor in the jack of Pismo's power supply?
Recently the power supply of my Pismo started failing and I decided to troubleshoot it. Turned out the cable next to the jack was broken. I went on with the repairs and inside the jack I found a resistor connecting the negative terminal with the shield of the jack. What's the purpose for it? What would happened if I just removed it (I found a site that said it wasn't really necessary)?
Andy
After talking to a couple of experts in the field of electronics, they both confirmed tat that resistor is there in order to suppress any RF interference that the PowerBook might produce.
Similar Messages
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What's the purpose for the two Wireless Antennas on a WAP?
I have a very simple question, that I'm a little confused about. Here it goes.
Most Access Points have two antennas. One is labeled as LEFT/PRIMARY and the other is RIGHT.
What is the purpose for the two antennas? When I have one antenna connected it works without any issues. Can I just use the LEFT/PRIMARY antenna for wireless connectivity? What are the purpose for the two?
And we are talking about a single band, 802.11b/g NOT 802.11a.
Thank you!Hi Rashida,
The use of two Antennas on these AP's is used for "Diversity Mode. In many cases, 1 single Antenna will work nicely. Here is an explanation for the use of two Antennas :)
This describes the use of 2 **Identical Antennas in "Diversity" Mode;
The purpose of diversity is to overcome multipath reflections. Diversity antennas that share the same physical housing are placed at an optimum distance apart. The maker of the particular antenna determines that distance based on the characteristics of the antenna. When you use a pair of antennas with matching characteristics to provide diversity for cell coverage in your facility, the guideline is to put those matched antennas at a distance apart from each other that is equal to a multiple of the wavelength of the frequency that is being transmitted. The 2.4 GHz wavelength is approximately 4.92 inches. Therefore, to support diversity on a 2.4 GHz radio with two separate antennas, the antennas should be spaced approximately 5 inches apart. The antenna pair could also be spaced at multiples of 5 inches, but the distance between should not exceed 4 multiples: reflected waves farther apart than that are likely to be so distorted and different in delay spread that the radio could not work with them.Because each antenna is selected by itself, both antennas must have the same radiation characteristics and be positioned to provide similar cell coverage.
**** Two antennas connected to the same access point must not be used to cover two different cells.****
From this good doc;
Multipath and Diversity
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a008019f646.shtml
A diversity antenna system can be compared to a switch that selects one antenna or another, never both at the same time. The radio in receive mode will continually switch between antennas listening for a valid radio packet. After the beginning sync of a valid packet is heard, the radio will evaluate the sync signal of the packet on one antenna, then switch to the other antenna and evaluate. Then the radio will select the best antenna and use only that antenna for the remaining portion of that packet.
On transmit, the radio will select the same antenna it used the last time it communicated to that given radio. If a packet fails, it will switch to the other antenna and retry the packet.
One caution with diversity, it is not designed for using two antennas covering two different coverage cells. The problem in using it this way is that, if antenna no. 1 is communicating to device no. 1 while device no. 2 (which is in the antenna no. 2 cell) tries to communicate, antenna no. 2 is not connected (due to the position of the switch), and the communication fails. Diversity antennas should cover the same area from only a slightly different location."
Diversity Antenna Systems
Diversity antenna systems are used to overcome a phenomenon known as multipath distortion of multipath fading. It uses two **identical antennas, located a small distance apart, to provide coverage to the same physical area.
From this Antenna reference guide;
http://www.cisco.com/en/US/products/hw/wireless/ps469/products_data_sheet09186a008008883b.html
Hope this helps!
Rob -
Hello everybody
I bought a new iPhone 4 with iOS 6.1.3 installed. When I connected it to itunes for the first time to activate it iTunes asked me to enter the password for an account that the iPhone is locked to like if the device was used before what shall I do? PLease reply soonI can't do that because the device was purchased from United Arab Emirates and I got it as a gift in Syria but the problem is that there is not even a single apple store in Syria so is there another way to fix that, I googled it and was told to jailbreak the device whitch I did and than hacktivated it but the problem is the device doesn't connect to any network and only shows "no service" and the battery draining too fast so is there any other way to fix this issue
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What is setting required for Price Contol do the optional entery in master.
Hi SAP EXPERT,
What is setting required for Price Contol do the optional entery in Material master ?
Regards
Mahendra
Edited by: MAHENDRA NAVALE on Aug 27, 2011 2:23 PMHI
In general in the material master record you can, hide display or optional for a field, but there are certain feilds should be mandatory for material creation,like base unit of measure,material description,and price contro,l valuation price,valuation class,without this you cannot create a purchase order.
If you dont want to the price control means go for mateial type non valuated material NLAG. because the price control is mainly linked with the material valuation. based on the the price control the price difference will post either sock account or price difference account.
Goto>MM>LOGISTICS GENERAL>MATERIAL MASTER>FEILD SELECTION >ASSIGN FEILD SELECTION TO FEILD SELECTIN GROUPS(OMSR) >CHECK YOUR FEILD REFERENCE FOR PRICE CONTROL (MBEW-VPRSV) FEILD REFERNCE GROUP IS 32* > AND GOTO MAINTAIN FEILD REFERENCE FOR DATA SCREENS (OMS9) >ENTER YOUR FEILD SELECTIN GROUP 32 (PRICE CONTROL )AND CHOOSE MM01 MAKE IT FROM REQUIRED TO OPTIONAL.
Thanks
Edited by: Nijamudeen**MM on Aug 29, 2011 10:19 AM -
What are the tables for Partner Fuction regarding the Vendors Purchasing ?
Hello Gurus,
What are the tables for Partner Fuction regarding the Vendors Purchasing Organisation. I need the Partner Function Key, Parner Function Name, Number and the Name of the Number.
Thanx in advance,
RamonaHi Jürgen,
I know that table but it is only showing me the technical name of the Partner Function and I need also the rest: the text(name), number and the number name (text). I presume there are other tables for those infos.
I am not sure if I understand what are these. I just want the table to upload the data to BW. -
What is the procedure for storing iPads over the summer
What is the procedure for storing iPads over the summer
Lock them up in a cart. Power off completely. If you don't have enough iPad carts any secure area will do - see environmental requirements below. You will just have to recharge each one next fall as they will not retain enough power to turn back on.
Operating temperature: 32° to 95° F (0° to 35° C)
Nonoperating temperature: -4° to 113° F (-20° to 45° C)
Relative humidity: 5% to 95% noncondensing
Maximum operating altitude: 10,000 feet (3000 m) -
Hi All,
I am configuring RSS Viewer webpart to SP 2013.
But i am getting an error "An unexpected error occurred processing your request. Check the logs for details and correct the problem."
I looked for solution of this error. i got to know, we need to set proxy server in web.config file.
So, in order to resolve this i put the following set of code in web.config and save the file
<system.net>
<defaultProxy>
<proxy usesystemdefault="True" proxyaddress="http://myproxyserver" bypassonlocal="True" />
</defaultProxy>
</system.net>
But, still i am getting the error.
What could be the problem now.
Any help is much appreciated.
Thanks,
RakeshHi Rakesh,
According to your description, my understanding is that you got an error when you used RSS viewer web part in SharePoint 2013.
The RSS viewer web part uses authentication delegation and is using the current user's credentials to access the proxy. However, the RSS viewer only supports anonymous and Kerberos authentication. So if you are using NTLM authentication, the RSS viewer will
not be able to authenticate the user through the proxy. More information, please refer to the link:
http://kalsing.blogspot.com/2007/11/troubleshooting-rss-viewer-web-part.html
Also see:
http://blogs.technet.com/b/sharepointdse/archive/2007/04/13/fun-with-rss.aspx
I hope this helps.
Thanks,
Wendy
Wendy Li
TechNet Community Support -
I am looking for information on iPad and iPhone apps and Mac software that are "top of the line" for academic research. The most current and comprehensive information I have found is dated July 2010.
PogoPossum,
My area of interest is in business and economic history. There is a considerable amount of reading and charting. Until the iPad hit the streets, I only considered stacks of books, journals, and downloaded documents, all marked up with highlighters, underlines, and marginal notes.
Most of my PC based work involved MS Office, Endnote, and MS OneNote.
What I would like to do with the iPad and MacBook are the same things (Office, Endnote, OneNote) and add the ability to read and markup all forms of printed materials from books to pdf to webpages.
I cut my teeth on an iPod Touch and have tried a lot of the note taking and reading apps. Without a camera the standard iPod Notes works for short quick notes and long think pieces. I just emailed the content and downloaded the stuff to my PC. Obviously, I do not want to continue at this "non-integrated" level of work.
Does this help?
Dick -
*Hi
I would like to know how to make the installer for my executable run the DAqcarddriver and runtime engine installer automatically
I would like to include run time engine and the drivers of my daqcard(AI16XE50),( and maybe Ni daq or anything else needed?) in order to make my application portable for other computers on OS win98 and winXP .
How can I do that
thank you in advance
OlivierOlivier,
What version of LabVIEW are you using to build your application? On a remote computer you should only need the drivers you are using and the Run-Time Engine. You can attach installers to LabVIEW 8 installers, but for previous versions you will have to add it by opening the installer configuration page, configuring your installer and then configure the Advanced properties. This will allow you to attach a EXE to the installer which you can run. Also depending on the version of LabVIEW will affect the OS version that you will be able to install the RTE on. LabVIEW 7.0 is the last version that can be installed on Windows 98.
Please let me know if you have any further questions and please include the version of LabVIEW you are using. Thanks!
Andy F.
National Instruments -
How may one cancel the download of an update that was started by having actuated the "Check for Updates" button in the "About Firefox" window, please? If possible please cover all platforms, Mac, Windows, Linux, although the first mentioned is what currently applies to my circumstances.
Thank you.Such a download is usually saved in an updates or updated folder in the Firefox program/application folder.
You can delete this folder to cancel the download.
If files already have been downloaded then remove the files in the updates and updates\0 folder.
*http://kb.mozillazine.org/Updates_reported_when_running_newest_version
*http://kb.mozillazine.org/Software_Update
Mac: /Applications/Firefox.app/updates "/path_to/Firefox.app/Updated.app"
Linux: "/path_to/firefox/updated"
Windows: C:\Users\<user>\AppData\Local\Mozilla\Firefox\Mozilla Firefox\updates -
In adobe premiere cc 2014 , in the version for Apple , there is the " dynamics" in the audiometer / amplitude and compression/dynamics. In the same version for PC , there is no option. Somebody is also having this problem ? tks
are you referring to the audio meters panel? im on windows, and i can right click the meters panel and get options for "dynamic peaks". there are audio effects, from the effects panel if thats what you are looking for? i have one named "Dynamics" as well as several compressors.
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I cannot turn on the wifi for my 4g. The button is visible but non functional. suggestions?
I cannot turn on the wifi for my 4G. The button is visible but non functional. Suggestions?
Hello! Does the wifi button look greyed out? Here is a link regarding this issue: http://support.apple.com/kb/ts1559
What you will need to do is to first to reset network settings by going to Settings>General>Reset>Reset Network Settings, NOTE: When you do this all bluetooth/wifi passwords will be forgotten. If the issue persists then we need to do a simple backup and restore.
Follow http://support.apple.com/kb/ht1766 and http://support.apple.com/kb/ht1414 on how to backup and restore, when you restore please restore as new, do not restore the backup just yet if the Wifi is greyed out then there is a hardware issue and the device needs to be serviced. Please check your local Apple Store or call into Apple regarding service options and warranty status. Hope this helps! -
How do you get to the options for export settings with the new quicktime?
I'm having trouble with the new quicktime pro. I'm trying to export a video with specific settings when exporting. It seems that in this version of quicktime you export and the only options i get is how to format : for ipad/pod/phone or 480p which is not what I want I need to change the settings to make my video 480x360 and fast start for web. can someone help
How do you get to the options for export settings with the new quicktime?
You don't Use QT 7 "Pro", GarageBand, a video editor app, or a third-party app like MPEG Streamclip all of which can access user conversion settings. -
I recently purchased an Apple TV box & the App for Apple TV from the Apple store. Now how do I get it to work? I am a card-carrying technological imbecile.
If I'm understanding correctly, you have an Apple TV 2 (the small, black box version of the Apple TV), and downloaded the Remote App from the iTunes Store for your iPod Touch/iPhone/iPad, correct? If so...
For the AppleTV setup, hook it up to your television and, if applicable, your Surround Sound system. To do this, you'll use an HDMI cable (not included, available here) to hook the AppleTV to your Television. The cable only fits one way, and should slide effortlessly into place. If, and only if, you intend to use your surround sound system with the AppleTV, you will also need what's called a TOSLINK Optical Cable (also not included, available here). This cable goes from the AppleTV to a port labelled Optical In or Digital In on the back of your surround receiver (consult the manual that came with your surround sound system for additonal help).
From here on, we'll focus on hooking up the AppleTV, then how to setup the Remote App from Apple on your iOS device.
The AppleTV needs a network connection in order to function correctly. A wired connection is recommended, but Wi-Fi is built-in to the AppleTV if a wired connection isn't available. With the AppleTV plugged into your television, follow the on-screen instructions for setup. To connect the AppleTV to your Wi-Fi network, you'll need to know the name of the network you want to connect to, as well as any password needed to connect to it. When the AppleTV has a network connection, it'll load the latest selection of TV Shows, Movies and Music for display on the main menu - that's the easiest way to tell everything's working.
For the Remote App, all you need to do is download the free application to a compatible iOS device (Any iOS device running iOS 3.1.2 or higher). Once downloaded, go to the computer hosting your iTunes library, and turn on Home Sharing. Finally, start the Remote App on your iOS device (be it iPhone, iPad, or iPod Touch), login with the same information you setup Home Sharing with, and away you go! The Remote App is entirely optional, since the AppleTV can be controlled by the included remote control, but it's a nice touch nonetheless.
I hope this answered your question, or at least helped put you on the path to success. If you need something clarified, please don't hesitate to ask here. -
How to let the user define the colors for each plots in the graph (I use LabVIEW 7)?
How to let the user define the colors for each plots in the graph (I
use LabVIEW 7)?Hi,
Take a look at this example, it uses property nodes to select tha
active plot and then changes the color of that plot.
If you want to make the number of plots dynamic you could use a for
loop and an array of color boxes.
I hope this helps.
Regards,
Juan Carlos
N.I.
Attachments:
Changing_plot_color.vi 38 KB
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