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Tektronix provides test and measurement instruments, solutions and services for the computer, semiconductor, military/aerospace, consumer electronics and education industries worldwide.
These distortions cause amplitude changes, ringing, overshoot, and undershoot in fast rise times and 2T pulses.
The affected signal components range in duration from 125 nsec to 1 μsec. A 1T pulse must be used to test for these distortions. See the discussion on Linear Distortions. Errors are expressed in “percent-SD.” The presence of distortions in short time domain can also be determined by measuring K2T or Kpulse/bar. See the discussion on K Factor. Picture effects include fuzzy vertical edges. Ringing will sometimes generate chrominance artefacts near vertical edges.
Industry:Software
The relative speed of tape and head during normal recording or replay. The tape-to-head speed coincides with the tape speed in conventional longitudinal recording but is considerably greater than the tape speed in systems where the heads are scanned across or along the tape.
Industry:Software
Memory test pattern in which a single one bit is shifted through each location of a memory filled with 0s. A walking-zero pattern is the converse.
Industry:Software
Points are locations in 3D space. They are represented in the computer as numerical triplets (x, y, z) where x, y, and z measure the point’s distance from the origin. A point is also called a vertex (plural is vertices). Objects are defined in terms of points. Vertex is a synonym for point. A point’s x, y, and Z values are called its coordinates.
Industry:Software
Term for a transmission or recording scheme that can tolerate significant impairments, without catastrophic failure (severe degradation).
Industry:Software
Present condition of the device. Usually indicated by flag flip-flips or special registers. See Flag.
Industry:Software
Flow diagram consisting of tests and measurements used to diagnose and locate faults in a product.
Industry:Software
A) A process that allows two signals to modulate a single carrier frequency. the two signals of interest Amplitude Modulate carrier signals which are the same frequency but differ in phase by 90 degrees (hence the Quadrature notation). The two resultant signals can be added together, and both signals recovered at the other end, if they are also demodulated 90 degrees apart. b) Type of modulation for digital signals (DVB-C). Two signal components I and Q are quantized and modulated onto two orthogonal carriers as appropriate for the QAM level (4, 16, 32, 64, 128, 256). The constellation diagram is obtained by plotting the signal components with I and Q as the coordinate axes.
Therefore, 2, 3, 4, 5, 6, or 8 bits of a data stream are transmitted with one symbol, depending on the QAM level (4, 16, 32, 64, 128, 256). This type of modulation is used in cable systems and for coding the COFDM single carriers.
Industry:Software
A picture monitor displaying ADO video output can be thought of as a window which reveals a finite area of target space.
Industry:Software
