Ed, and list members, I have for some time been using a digital camera to include data in reports and e-mail form. It turns out to be as convenient, sometimes more, as dumping data directly from a digitizing instrument into a computer. I can use any kind of display -- analog or digital readout, even old-style storage scopes -- and download a JPEG file to either include in my report or send as an e-mail attachment. Equipment set-ups, ferrite positions, you name it, can all be documented easily. However, I did experiment with the "free" digital camera that came with an Earthlink membership, and I can testify that cheap still doesn't work.
Cortland ====================== Original Message Follows ==================== >> Date: 27-Jan-01 17:59:17 MsgID: 1078-1459 ToID: 72146,373 From: "Price, Ed" >INTERNET:[email protected] Subj: A Data Presentation Technique Chrg: $0.00 Imp: Norm Sens: Std Receipt: No Parts: 1 From: "Price, Ed" <[email protected]> Subject: A Data Presentation Technique List-Post: [email protected] Date: Sat, 27 Jan 2001 17:55:35 -0800 Reply-To: "Price, Ed" <[email protected]> Hi Listmembers! The following is a discussion of a nice technique for data presentation. All it needs is a digital camera and software you probably already have. It produces a graphically striking view of the "hot spots" on a circuit board. The view can be printed or emailed to share the results. I don't claim any technical originality or new insights. This is just an example of what you can do with resources you may already have. I'm only going to post the first couple of paragraphs, without the JPEG files, to this list. If you would like the complete text, plus the four JPEG files, just email me and I'll send you the complete 2 MB MS Word text and picture package. ++++++++++++++++++++++++ I recently did a study for a division of our company which produces revenue collection devices (ticket machines, card readers, turnstiles, fare boxes, etc) for the rapid transit industry. This particular EUT has a stylish 18" tall fiberglass housing and will be mounted in the passenger area of a bus. The EUT is equipped with bright LED indicators, a large liquid crystal display with a fluorescent backlight, a microwave data link, an infrared data link and a 13.56 MHz transponder (for powering and interrogating a "smart card"). This EUT had a large number of emissions throughout the 30MHz to 1 GHz range. The case was non-conductive, so every circulating RF current was radiating nicely. Ferrites added to the only cable (the 12VDC power input) didn't solve most of the emanations. I determined that almost all emanations originated on the liquid crystal display driver board at the front of the EUT. This board had been purchased from a non-local vendor. The question became one of how to convey the noisy RF condition information to the program engineers and the display board vendor's engineers. The first thing I did was shoot a color digital photo of the driver board. Ed Price [email protected] Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military & Avionics EMC Services Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected] ====================== End of Original Message ===================== ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: [email protected] Michael Garretson: [email protected] For policy questions, send mail to: Richard Nute: [email protected]
