Breaking News
Comments
Newest First | Oldest First | Threaded View
JOHNEHRHART
User Rank
Author
re: Troubleshooting audio and video noise
JOHNEHRHART   12/1/2009 10:06:29 PM
NO RATINGS
The surrogate schematic details are a little unfamiliar. Are those coax feedthroughs that are electrically isolated from the box on boththe center conductor and the shield?? Can you draw it differently? Is the 75 ohm resistor connected to the surrogate box? Is the box metal ? I assume so? Are you going to use a signal analyzer that will actually identify the noise frequencies and power spectrum? Or just monitors? I like the hummer idea. What is common impedance coupling? Same as common mode noise? The assumption below is that a properly designed device will have very low resistance between device chassis and ground contacts for each input or output, right? 4. Connect one hummer lead to the device chassis and touch the other lead to the ground contact of each input or output connector. If the device is properly designed, there will be no output hum or change in the noise floor.



Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Like Us on Facebook
Special Video Section
LEDs are being used in current luxury model automotive ...
With design sizes expected to increase by 5X through 2020, ...
01:48
Linear Technology’s LT8330 and LT8331, two Low Quiescent ...
The quality and reliability of Mill-Max's two-piece ...
LED lighting is an important feature in today’s and future ...
05:27
The LT8602 has two high voltage buck regulators with an ...
05:18
Silego Technology’s highly versatile Mixed-signal GreenPAK ...
The quality and reliability of Mill-Max's two-piece ...
01:34
Why the multicopter? It has every thing in it. 58 of ...
Security is important in all parts of the IoT chain, ...
Infineon explains their philosophy and why the multicopter ...
The LTC4282 Hot SwapTM controller allows a board to be ...
This video highlights the Zynq® UltraScale+™ MPSoC, and sho...
Homeowners may soon be able to store the energy generated ...
The LTC®6363 is a low power, low noise, fully differential ...
See the Virtex® UltraScale+™ FPGA with 32.75G backplane ...
Vincent Ching, applications engineer at Avago Technologies, ...
The LT®6375 is a unity-gain difference amplifier which ...
The LTC®4015 is a complete synchronous buck controller/ ...
10:35
The LTC®2983 measures a wide variety of temperature sensors ...