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Re: Frequency dependant gain stages
Hello Andrew, By mixing the output of a differentiator (+6 Db / octave slope for all frequency) with a straight flat gain, you get a response that remains flat with increasing frequency until...
View ArticleRe: Zedboard + FMCOMMS1 + reference design problems
Hello Adrian, Thank you for pointing out the revisions that supposed to be used.I have downloaded and installed Vivado 2013.4 and SDK. I have generated BOOT.bin, uImage and devicetree.dtb. But I am...
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Pot on ADC to select index filter
I had this working swell with a pushbutton on a counter. Now I want a turn a pot and select different filters, sort of like "presets". Clearly I am doing something wrong. What is it? The GPIOs are to...
View ArticleRe: What was wrong with my boot process of Ubuntu system supporting the...
Jie: It's not that we don't help, or don't want to - we want to help, and do help, as much as we can. However - the basic boot process of Linux is beyond what we can provide assistance with. There are...
View ArticleRe: AD-FMCOMMS3 and IIO
Ed: In the http://wiki.analog.com/resources/tools-software/linux-software/zynq_images it says you should run the update scripts. Documentation reflects the status of the system after the updates have...
View ArticleRe: AD9364 Clock
Anthony: You need to purchase a carrier board that the AD9361 can connect to. There is no way just to connect it to a logic analyzer. The lowest cost FPGA board is $395 which isn't that much. There are...
View ArticleRe: Building libiio and examples?
Jan: If you want to cross compile - that's totally up to you. That's not something we can spend time supporting. Compiling things on the Zedboard/ZC706 will make things go much faster/easier, since you...
View ArticleRe: AD9361 initialization and calibration
Slobodan: If you changed the drivers - you are on your own (sorry). We don't have this problem. -Robin
View ArticleRe: Programming registers in AD936x
RC: One of the things that people don't understand about the AD9361 & AD9364 is there is not "one" register settings that will work across multiple parts. Each part is unique, and part of the...
View ArticleRe: Request FMCOMMS1 output clarifications
There were some issues that we found that could show up like this. The Tx and Rx PLL can interact if they are too close together. If you turn off the Rx side, and look at the Tx on a spectrum analyzer...
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Re: axi_axi_hdmi problems in directfb supplied examples
Henry: Lars is at the European Linuxcon this week. Someone might be able to help - but it might get delayed til he gets back. -robin BTW - I tried looking at your blog, and I got a "Sorry, the page you...
View ArticleRe: AD1939 at 8Khz sample rate
Hello Peter, Are you able to "talk" to the part and control it? Something like run it at 48K and send audio then mute it using a register write? I am questioning weather all the connections are enable...
View ArticleRe: Issue when using ADV7619 in 1080p / 24-25-30Hz
The ADV7619 is basically a serial to parallel converter. Have you verified the source is producing the correct HDMI signals. Maybe connect it to a HDMI analyzer, (Astro) What really bothers me is the...
View ArticleRe: ADV7610 I2C answers xFF for every registers read
If you have some hardware that works than at least the basic schematic and layout appears to be correct. Have you sent us a schematic for review? There might be some other issues that are causing the...
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AD5933 Occasional Spurious Data
Hi,I'm using the AD5933 to monitor the impedances of various systems and the majority of the time it works fine, but every 50-100 samples I get a spurious reading that throws everything off. I...
View ArticleRe: I have problems in using SPI. I would be very grateful if anybody could...
Problem solved! Thanks John! Sheng
View ArticleRe: AD9911 Multi-tone generation
Bingo! The issue was writing 0x03 (CFR) for each channel. The Data Align bits were not set for every channel. Thanks.
View ArticleRe: AD9911 Multi-tone generation
I have one more issue. When having just an auxiliary channel on sometimes the output appears to be clipping on the bottom. As though the Primary Channel CH1 is adding an offset from its phase...
View ArticleRe: CN0196: H-Bridge Driver Circuit Using Isolated Half-Bridge Drivers
Hi there, I tested the CN0196 in automotive environment driving a throttle actuator. The circuit works fine. 1. I would like to know, if I can use the same ground on the drive and the control side (I...
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Re: dc/dc controller with output of 500 V
Hello Sveta, It looks like your design is well on its way. Yes, sensing high voltage with a resistor divider can waste too much power in a system such as yours, where current to the useful...
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