Image quality – Conventional X-ray
... laboratory session, more human like phantoms will be shown in order to demonstrate the clinical effects in a more realistic fashion. DEFINITIONS: We use three concepts in order to define image quality: Contrast: The difference in grey level between the object detail and the surrounding background. T ...
... laboratory session, more human like phantoms will be shown in order to demonstrate the clinical effects in a more realistic fashion. DEFINITIONS: We use three concepts in order to define image quality: Contrast: The difference in grey level between the object detail and the surrounding background. T ...
LTC1250 - Very Low Noise Zero-Drift Bridge
... when the LTC1250’s output is heavily loaded, the chip may dissipate substantial power, raising the temperature of the package and aggravating thermocouples at the inputs. Although the LTC1250 will maintain its specified accuracy under these conditions, care must be taken in the layout to prevent or ...
... when the LTC1250’s output is heavily loaded, the chip may dissipate substantial power, raising the temperature of the package and aggravating thermocouples at the inputs. Although the LTC1250 will maintain its specified accuracy under these conditions, care must be taken in the layout to prevent or ...
PC Oscilloscope PCSU1000
... broadening around individual spectral lines. Many different windows have been designed for this purpose. The choice of a suitable one depends on the nature of the signal or data, and on the type of information to be extracted from its spectrum. In general, a good FFT window has a narrow main spectra ...
... broadening around individual spectral lines. Many different windows have been designed for this purpose. The choice of a suitable one depends on the nature of the signal or data, and on the type of information to be extracted from its spectrum. In general, a good FFT window has a narrow main spectra ...
Amateur Extra License Class - Wabash Valley Amateur Radio Asso
... E4B12 -- What is the significance of voltmeter sensitivity expressed in ohms per volt? A. The full scale reading of the voltmeter multiplied by its ohms per volt rating will provide the input impedance of the voltmeter B. When used as a galvanometer, the reading in volts multiplied by the ohms/volt ...
... E4B12 -- What is the significance of voltmeter sensitivity expressed in ohms per volt? A. The full scale reading of the voltmeter multiplied by its ohms per volt rating will provide the input impedance of the voltmeter B. When used as a galvanometer, the reading in volts multiplied by the ohms/volt ...
7.0 - Radio Signals and Measurements
... E4B12 -- What is the significance of voltmeter sensitivity expressed in ohms per volt? A. The full scale reading of the voltmeter multiplied by its ohms per volt rating will provide the input impedance of the voltmeter B. When used as a galvanometer, the reading in volts multiplied by the ohms/volt ...
... E4B12 -- What is the significance of voltmeter sensitivity expressed in ohms per volt? A. The full scale reading of the voltmeter multiplied by its ohms per volt rating will provide the input impedance of the voltmeter B. When used as a galvanometer, the reading in volts multiplied by the ohms/volt ...
AN1435 A family of wideband low noise transimpedance
... such as high input impedance FET preamplifiers with a shunt input resistor, tend to be more bandwidth limited. They exhibit integrating characteristics, and therefore must be equalized by a differentiating second stage to achieve broad frequency response. The integrating input stage, however, is pro ...
... such as high input impedance FET preamplifiers with a shunt input resistor, tend to be more bandwidth limited. They exhibit integrating characteristics, and therefore must be equalized by a differentiating second stage to achieve broad frequency response. The integrating input stage, however, is pro ...
LMX2216 0.1 GHz to 2.0 GHz Low Noise Amplifier/Mixer 0.1
... Q6. Assuming that the two signals are small, the result is a product of the two signals, producing at the output a sum and difference of the frequencies of the two input signals. If either of these two signals are much larger than the threshold voltage VT, the output will contain other mixing produc ...
... Q6. Assuming that the two signals are small, the result is a product of the two signals, producing at the output a sum and difference of the frequencies of the two input signals. If either of these two signals are much larger than the threshold voltage VT, the output will contain other mixing produc ...
Cont`d
... • Computers, cannot work well with analog information. So we digitize information by breaking it into pieces and representing those pieces separately. • Why do we use binary? Modern computers are designed to use and manage binary values because the devices that store and manage the data are far less ...
... • Computers, cannot work well with analog information. So we digitize information by breaking it into pieces and representing those pieces separately. • Why do we use binary? Modern computers are designed to use and manage binary values because the devices that store and manage the data are far less ...
Lab 6 - Digital Signals and A/D and D/A Conversion
... For most (e.g. non-sinusoidal) signals, the only means to avoid aliasing is to apply a low pass filter to analog signals prior to A/D conversion, so that the sampled signals contain very little spectral amplitude at frequencies of fs/2 and higher. This will dramatically reduce or eliminate the highe ...
... For most (e.g. non-sinusoidal) signals, the only means to avoid aliasing is to apply a low pass filter to analog signals prior to A/D conversion, so that the sampled signals contain very little spectral amplitude at frequencies of fs/2 and higher. This will dramatically reduce or eliminate the highe ...
Class2_19_Tektronix. ppt
... Not showing waveshape information that really exists - when detail of interest occurs during holdoff, between samples, or is too fast for the writing speed of the oscilloscope to display Showing waveshape information that does not exist - ...
... Not showing waveshape information that really exists - when detail of interest occurs during holdoff, between samples, or is too fast for the writing speed of the oscilloscope to display Showing waveshape information that does not exist - ...
Amptek Inc. Amptek Inc. 1 Activitity (of a radioisotope): The number
... Baseline (of a pulse): The instantaneous value that the voltage would have had at the time of the pulse peak in the absence of that pulse. In nuclear electronics, pulse heights are measured relative to the baseline, which is not necessarily zero. See Figure 1. Baseline restoration: A method used to ...
... Baseline (of a pulse): The instantaneous value that the voltage would have had at the time of the pulse peak in the absence of that pulse. In nuclear electronics, pulse heights are measured relative to the baseline, which is not necessarily zero. See Figure 1. Baseline restoration: A method used to ...
Statistical Properties of Images
... This procedure can be pushed even farther. Could an image have an unspecified histogram? To answer this question, we will use a program that modifies the gray levels in the image by a code conversion that guarantees that the resulting image will have a predetermined histogram. Let us impose a constr ...
... This procedure can be pushed even farther. Could an image have an unspecified histogram? To answer this question, we will use a program that modifies the gray levels in the image by a code conversion that guarantees that the resulting image will have a predetermined histogram. Let us impose a constr ...
Raster display
... After some dissipation due to heat, rest of the energy is transferred to electrons of the phosphor atoms, making them jump to higher quantum energy levels. The excited electrons then return to their previous quantum levels by giving up extra energy in the form of light, at frequencies predicted by q ...
... After some dissipation due to heat, rest of the energy is transferred to electrons of the phosphor atoms, making them jump to higher quantum energy levels. The excited electrons then return to their previous quantum levels by giving up extra energy in the form of light, at frequencies predicted by q ...
4.2 Digital Transmission
... Vmax= Max uncompressed analog input voltage Vin= amplitude of the input signal at a particular of instant time Vout= compressed output amplitude A, = parameter define the amount of compression ...
... Vmax= Max uncompressed analog input voltage Vin= amplitude of the input signal at a particular of instant time Vout= compressed output amplitude A, = parameter define the amount of compression ...
LDO noise examined in detail
... testing and measurements. The common setup parameters are shown in Table 1. Please note that a soft-start capacitor, CSS, in the TPS74401 datasheet1 is referred to as a noisereduction capacitor, CNR, in this article for easier reading. First, the effect of the amplifier gain was examined with a negl ...
... testing and measurements. The common setup parameters are shown in Table 1. Please note that a soft-start capacitor, CSS, in the TPS74401 datasheet1 is referred to as a noisereduction capacitor, CNR, in this article for easier reading. First, the effect of the amplifier gain was examined with a negl ...
+ collecting electrode
... During these measurements we have observed various effects that distort the resulting energy spectra not-trivially, hence we choose not to show the spectra at this time. We are investigating the origin of these effects (cross-talk among the pixels in the matrix, ground bounce, …?) both by checking a ...
... During these measurements we have observed various effects that distort the resulting energy spectra not-trivially, hence we choose not to show the spectra at this time. We are investigating the origin of these effects (cross-talk among the pixels in the matrix, ground bounce, …?) both by checking a ...
New Ultra Small Satellite Image Capturing Subsystem Development
... reduce the quantity of binary information elements in order to represent images destined for storage or transmission. Although the images are quite varied, meaning that the information they contain may all be very different (color, light, objects), it is still preferable to put in place a unique pro ...
... reduce the quantity of binary information elements in order to represent images destined for storage or transmission. Although the images are quite varied, meaning that the information they contain may all be very different (color, light, objects), it is still preferable to put in place a unique pro ...
Dither
Dither is an intentionally applied form of noise used to randomize quantization error, preventing large-scale patterns such as color banding in images. Dither is routinely used in processing of both digital audio and video data, and is often one of the last stages of ""mastering"" audio to a CD.A typical use of dither is converting a greyscale image to black and white, such that the density of black dots in the new image approximates the average grey level in the original.