Radio Shack 310 Manuale del Proprietario Scaricare il pdf (Pagina 24)

MEASURING A DC VOLTAGE

In oscilloscope measurements, the DC component of a

waveform is usually measured in terms of its DC flat-

line or AC average displacement above or below a ref-

erence line.

The maximum DC voltage measurement you can make

is determined by the positions of the input voltage se-

lector and the zero line.

For example, if the input voltage selector is set to 10

and the zero line is set at the middle position, the max-

imum measurement is ±5 Volts.

Follow these steps to measure a DC voltage deflection.

1. Continuously press the ProbeScope’s Menu but-

ton until

DVM

appears on its display, then press

the Select button.

2. Set the input coupling switch to

GND

Note

: When you set the input coupling switch to

GND

, the ProbeScope automatically resets the

trigger mode to

AUTO

3. Connect the

GROUND

(0 volt) wire to the signal

source’s ground or reference level.

–5V

Zero Line

22-310.fm Page 24 Friday, August 6, 1999 12:26 PM

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Radio Shack 310 Manuale del Proprietario Pagina 24