algailani

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About algailani

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  1. JColvin, thank you for the replay. Have a great day, M. Algailani
  2. Hello, I'm curious to know if the cyber-week giveaway has been determined/announced. If not, is there a time frame for the announcement? Thanks.
  3. update: I got me Allen- wrench (1/16") and opened the cover (see attached photo). I used the SWD (2x5 1.27mm) Breakout Board from Adafruit (although not intended for this purpose) to hookup to the pins (see the second photo). Thanks.
  4. Hi JColvin, Thank you for your reply. These screws require a tiny Allen-key wrench, which unfortunately I don't have. I will confirm the location when I get my hands on one. Thanks.
  5. Hi, I just received the new DMC60C motor controllers and I wonder where is the location of the expansion port? Is it hidden somewhere? No photos for the expansion port anywhere, even the reference manual doesn't say anything about its location. Thanks.
  6. I Spent some time looking into the Spartan-6 datasheet, but couldn't find useful information about the input impedance/resistance. The reason for not having a consistent value for the input impedance is that the input current is not static, in other words it is always changing as if there was some capacitor in the input path. Can some one provide some explanation to this phenomena, or confirm that the input impedance is always changing? Thanks
  7. Hello @jpeyron, The methods that I used to measure the input impedance of the AD2/AD are as follows: 1. While powering the device, I used a FLUKE 289 (50 000 count meter) in ohm mode to measure the impedance between the digital channels and GND. 2. Applied a 3.1v from a battery to a Digital I/O pin and inserted the FLUKE in series between the batt and I/O pin in μA range to measure the current passing into the I/O pin while the AD is running as a Logic analyzer. I used a battery to eliminate the noise from the switching power supply, in order to get clean and accurate readings
  8. Hi, I'm trying to measure the input impedance of my AD2 Logic analyzer and compare it to my new Digital Discovery impedance. My measurement is around 650 KΩ for the DD, however, I couldn't get any consistent result for the AD2 nor AD1. The input impedance varies between 30 MΩ and 70 MΩ. I used different techniques in my measurements, but with no success. I also looked the specs of D2/AD1 and couldn't find a figure for the Logic analyzer input impedance. Can someone please, help me find an answer or suggest a technique to measure the Logic analyzer input impedance? Thanks