Wide Bandwidth
2010
 |
 DATAFORTH SCM5B49 07 INPUT MODULE WIDE BANDWIDTH ISOLATED VOLTAGE 5 VDC NEW $199.99 Time Remaining: 4d 3h 14m Buy It Now for only: $199.99 |
 DATAFORTH SCM5B41 02 INPUT MODULE WIDE BANDWIDTH NEW $84.99 Time Remaining: 26d 6h 28m Buy It Now for only: $84.99 |
 DATAFORTH SCM5B41 03 MODULE ANALOG VOLTAGE INPUT WIDE BANDWIDTH NEW $80.99 Time Remaining: 4d 2h 48m Buy It Now for only: $80.99 |
Wide Bandwidth
How to Optimize Your Wan (wide Area Network)
So you're looking to optimize your WAN for your business and need to know what your options are. Upgrading your bandwidth to MPLS or Ethernet isn't necessarily the solution. Bandwidth utilization is the key for optimizing your WAN.
Packeteer, Riverbed and Juniper are WAN optimization systems that do an excellent job with latency, especially if CIFS WAN-unaware situations such as opening, copying and modifying files using Windows are the main problem.
To identify the delay, you need to find the path your IP packets take. A satellite connection versus a landline connection (such as earthbound wireless, land or underwater fibre) can be the source of the latency problem. Check with your service provider to get a service level agreement to guarantee the quality parameters you want concerning packet loss, delay and jitter.
It's very important to not buy or install any new network system before identifying existing delays.
Once the latency issue is identified, a valid solution for optimizing your WAN is to purchase a WAN-accelerator from a vendor that offers such a product. The amount of traffic your WAN uses will also determine which vendor you will choose for this product. For example, if your business uses such programs as Citrix and SAP, then a traffic-prioritizing WAN accelerator such as Packeteer or Ipanema would be the best solution. But if your business uses more file-oriented applications, your best option would be to purchase a data reduction accelerator like Riverbed, Juniper Citrix and Cisco. Riverbed is by far the best solution.
While optimization systems effect only TCP flows, latency issues with UDP flows (VoIP) can't be resolved since real-time traffic is naturally subject to delays. Citrix WANScaler, Cisco WAAS, Juniper, Riverbed and Expand as well as other vendors sell systems for optimizing generic TCP flows which would meet the needs of your business.
As a word of caution, all the vendors hide the effects of latency. WAN optimization solutions act like an invisible TCP proxy, simultaneously spoofing both the server's IP address to the client and the client's IP address to the server. The TCP ACK messages are sent locally, speeding up the delivery of the ACK message and avoiding latency effects. TCP connections and throughput are subject to latency when the ACK messages are returned.
Vendors also hide the effects of latency by utilizing the entire WAN bandwidth link for implementing selective ACKs and large initial flow control windows. Compression mechanisms, layer 7 optimizations (mostly CIFS file-sharing as well as HTTP-based compression), embedded QoS are used for artificially increasing bandwidth not in use. This is known as "WAN optimization".
About the Author
For more insights and additional information about WAN Optimization or get a FREE no obligation T1 rate quote, please visit http://www.usavetelecom.com
Best bass frequency, bass bandwidth, and treble frequency?
I just bought an Alpine CDE-121 cd player for my truck. I listen to rock and rap music.
Trying to figure what the best settings of frequencies and stuff. You people educated about this help me out by picking best answer...
Bass center frequency: 80hz 100hz 120z 60hz
Bass Bandwidth: 1 2 3 4 narrow-wide
Treble center frequency: 10.0khz 12.5khz 15.0khz 7.5khz
I don't understand this to well. Someone tell me the simple truths bout these settings!!
thanks
I used to have a blaupunkt with similar options.
All those settings really come down to personal preference, and what sounds best may very well vary from song to song.
If your bass and treble settings are near their neutral setting (0) the effect of the eq will be minimal anyway.
The manual explains things as well as I could do here, but I can try to summarize.
If you want to adjust low bass you'd choose 60 or 80hz. 80 is usually about the point where subs fade out and full range speakers kick in.
If you want to adjust mid-bass you'd set it to 100 or 120.
bandwidth refers to how wide of a range of frequencies are effected outside the center freq. For example, if you choose 80hz and a bandwidth of 4 then you'd be effecting 80 the most, 85 and 75 slightly less, 90 and 70 a little less, 65 and 95 a little bit, 60 and 100 slightly. If you choose 80 and 1 then you'd effect 80 just the same as above, 75 and 85 quite a bit less and 70/90 slightly.
The treble you'd just have to mess with. I found that changing the 7.5-10khz range helped my sound the most.
15khz covers only the highest frequency sounds -- basically just cymbals and similar sounds.
3 of 3: Measuring the TRUE Performance of Wide Bandwidth Transmitters- K Band Example
