Radio Shack 310 Uživatelský manuál stáhnout pdf (Strana 40)

Frequency Measuring Limits:

• You must have a minimum of one complete

cycle of a waveform on the display.

• You cannot have more than one cycle per divi-

sion.

PHASE MEASUREMENTS

You can compare two signal waveforms of the same

frequency either from two separate points on the same

electronic device, or from similar points on two sepa-

rate electronic devices. The phase difference between

the two signal waveforms is measured in degrees.

Note: You must calculate the number of degrees per

division for this measurement to work with your Probe-

Scope.

Grid Overlay Degree Calculation

Since a complete cycle of a sine wave is 360 degrees,

it is easy to calibrate the grid overlay in degrees. For

example, if the ProbeScope’s controls are adjusted so

one cycle of the input waveform spans 9 squares on

the grid, then each square represents 40 degrees of

the complete cycle (360/9=40). The grid display is then

considered to be calibrated to 40 degrees per square.

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Radio Shack 310 Uživatelský manuál Strana 40