Glossary
9
oscilloscope, spectrum analyser, and meter display.
Real time continuous mode
A sampling mode in which the software repeatedly requests single samples from the oscilloscope. This mode is suitable for low sampling rates when you require the latest sample to be displayed as soon as it is captured.
Streaming mode
A sampling mode in which the oscilloscope samples data and returns it to the computer in an unbroken stream. This mode of operation is suitable when the input signal being sampled contains only low frequencies.
Timebase
The timebase controls the time interval that the width of the scope display represents. If you select Timebase is time per division in the Preferences dialog box in the PicoScope application, it works like a traditional bench top scope. There are ten divisions across the screen, so the total time interval is ten times the timebase.
USB 1.1
Universal Serial Bus (Full Speed). This is a standard port that enables you to connect external devices to PCs. A typical USB 1.1 port supports a data transfer rate of 12 Mbps (12 megabits per second), and is much faster than a serial port.
USB 2.0
Universal Serial Bus (High Speed). This is a standard port that enables you to connect external devices to PCs. A typical USB 2.0 port supports a data transfer rate that is 40 times faster than that supported by USB 1.1. An additional feature of USB 2.0 is that it is backwards compatible with USB 1.1.
Vertical resolution
A value, in bits, related to the number of distinct input voltage levels that the oscilloscope can convert to digital values. Calculation techniques can improve the effective resolution.
Voltage range
The range of input voltages that the oscilloscope will measure in a given mode.
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