Glossary
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PicoScope 2000 Series Programmer's Guide
PicoScope software. This is an application that accompanies all our PC Oscilloscopes.
Although you do not need it if you are writing your own application, you should install it
anyway, because it includes the drivers that you will need to control the oscilloscope.
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. A number that is supplied to the driver to specify a sampling rate for the
oscilloscope. Each oscilloscope model has a different range of possible sampling frequencies,
as specified in the User's Guide for that model.
USB 1.1. An early version of the Universal Serial Bus standard found on older PCs. Although
your PicoScope will work with a USB 1.1 port, it will operate much more slowly than with a
USB 2.0 or 3.0 port.
USB 2.0. Universal Serial Bus (High Speed). A standard port used to connect external devices
to PCs. The high-speed data connection provided by a USB 2.0 port enables your PicoScope to
achieve its maximum performance.
USB 3.0. A faster version of the Universal Serial Bus standard. Your PicoScope is fully
compatible with USB 3.0 ports and will operate with the same performance as on a USB 2.0
port.
Vertical resolution. A value, in bits, that indicates the number of input voltage levels that the
oscilloscope can distinguish. 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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