Pages

4/29/2005

Outlook::Exchange::Network


Problem
Outlook uses UDP for messages notices. If there is filtering or errors sending the UDP packets Outlook may not refresh the new messages on your client until you click another folder or something to force a refresh.
Information
The Outlook Find feature and the new mail notifications do not work after you apply Windows XP Service Pack 2: "To turn on RPC Polling in Outlook 2002"

4/28/2005

Ground loop problems and how to get rid of them: "Ground loop problems and how to get rid of them"
Grounding and Bonding Datacom Systems: "Telecommunications main grounding busbar (TMGB). The TMGB is the dedicated extension of the building grounding electrode system for the datacom infrastructure. Because it's the central attachment point for TBBs and equipment, it should have easy access by datacom personnel.
The TMGB is a predrilled copper bus bar with standard NEMA bolt-hole sizing and spacing for the particular lug connection used. It should be large enough to satisfy today's applications and accommodate future growth. The TMGB should have a minimum thickness of 6 mm and width of 100 mm. You'll find varieties of ground bars available, and some come as a kit you can customize to meet specific requirements of the application. Pre-welded exothermic pigtails are available in a variety of conductor sizes and lengths, insulated or bare, ready for your attachment to the building ground.
Electrotin plating results in reduced resistance. However, you must completely clean any mating surfaces if they're not plated. If you have datacom panelboards located with the TMGB, you must bond the alternating current equipment ground bus (or metallic enclosure) of each to the TMGB/TGB. Make sure you maintain appropriate clearances when locating TMGBs as close as possible to the panelboards."

4/14/2005

USB 1.1, USB 2.0, Firewire 1394a, Firewire 1394b (Firewire 800) Comparison Chart: "USB 2.0
USB 1.1, USB 2.0, and Firewire Comparison Chart:
Max. Burst Transfer Rate
USB 1.1USB 2.0FireWire 1394aFireWire 1394b
12 Mb/s480 Mb/s400 Mb/s800 Mb/s


USB 2.0 - Capacities
Maximum cable length (USB 2.0): 5 meters
Maximum cable length (USB 1.1): 3 meters
Maximum hubs connected in series: 5
Maximum devices connected in series: 127
The Universal Serial Bus (USB) interface connects computers to mice, digital cameras, scanners, printers, handhelds, and other peripherals.

USB 2.0, available on desktop computers and on laptops, raises the data-transfer speed from 12 Mbps to 480 Mbps and brings the technology to the most demanding peripherals, such as camcorders, portable CD-RW drives, or external hard drives.

Most new mainstream PCs have at least one USB 2.0 port, which lets you connect not only dozens of new USB 2.0 devices but also the thousands of USB 1.1 devices on the market. Connecting a USB 1.1 device to a USB 2.0 port, however, will still yield a maximum througHPut of only 12 Mbps."

4/04/2005

Sharepoint::Firewall


Using Sharepoint for an Extranet
Download details: SharePoint Portal Server 2003 Document: Deploying on an Extranet by Using ISA Server 2000 and ISA Server 2004: "how to deploy Microsoft Office SharePoint Portal Server 2003 across an extranet"

MS Office::Metadata


Download details: Office 2003/XP Add-in: Remove Hidden Data: "permanently remove hidden data and collaboration data, such as change tracking and comments, from Microsoft Word, Microsoft Excel, and Microsoft PowerPoint files"