Measurement-computing LogBook Series Manual do Utilizador descarregar pdf (Página 221)

LogBook User’s Manual 887199 Glossary xiii

Sequencer

Defines and controls the state of the measurement system for each step of a scan.

Simultaneous Sample-and-Hold

An operation that captures samples from multiple channels at the same instant in time. The result is elimination

of time skew between measurement of individual channels.

Single-ended mode

Measurement of a voltage between a signal line and some reference that may be shared with other channels.

(Also see differential mode).

Trigger

An event to start a scan or mark an instant during an acquisition. A trigger can be a TTL signal, a specified

signal level, a button manually or mechanically engaged, or a software command.

TTL

Transistor-Transistor Logic (TTL) typically used to communicate logic signals where a logical 0 is defined by a

voltage level of <0.8V and logical 1 is defined as 2.4-5V.

Unipolar

A range of analog signals between zero and some positive value (e.g., 0 to 10 V).

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Measurement-computing LogBook Series Manual do Utilizador Página 221