Measurement Of Dc Offset Voltages; Time Measurements; Time Interval Or Period; Frequency Of A Signal - Metrix Multimetrix X 4010 Bedienungsanleitung

6.1.2

Measurement of DC offset voltages

1. Adjust the VOLTS/DIV. control [8] so that the signal to be measured is displayed over
approximately 3 to 5 vertical divisions and make sure that the VOLT VAR. button [7] is up
against the stop on the right (calibrated position).
2. Adjust the time base using TIME/DIV. [13] so that there are 1 to 2 signal periods on the screen
and use POSITION [12] to align the positive peak of the signal "Vc+" on the vertical axis (figure
4, point B)
⊥ ⊥ ⊥ ⊥ ⊥
3. Select the position using the switch [10] and displace the signal vertically with POSITION
[6] to make the trace coincide exactly with the central horizontal axis of the graticule which will
be the "zero volt" reference in figure 4.
4. Return the switch [10] to the DC position.
5. The value of the DC component "Vdc" is given by the following formula:
6. For example, in figure 4 where we are using a 1:10 attenuating probe:
6.2.

Time measurements

6.2.1.

Time interval or period

Follow the procedure below to measure the time interval between two points or the period of a repetitive
signal:
1. Adjust the VOLTS/DIV. control. [8] so that the signal to be measured is displayed over approximately
5 vertical divisions.
2. Adjust the time base using TIME/DIV. [13] so that there are 1 to 2 signal periods on the screen and
make sure that the TIME VAR. button [11] is up against the stop on the right (calibrated position).
3. Modify the vertical position using POSITION [6] so that the points to be measured A & B are located
on the horizontal central axis of the graticule as shown in figure 5.
4. Modify the horizontal position with POSITION [12] so that point A is on a vertical axis to the left of
the graticule (see figure 5, point A).
5. Use the following formula to measure the time interval:
Time (s) = Distance between the 2 points (div.) ´ Time Base Coefficient (t/div.)
6. Thus, for the example presented in figure 5:
Time in seconds = 4.1div. x 2µs/div. = 8.2µs
6.2.2.

Frequency of a Signal

1. First measure the period as described above.
2. To obtain the value of the signal's frequency, use the following formula:
Frequency (Hz) = 1 / Period (s)
Thus, for the example presented in figure 5:
Frequency (Hz) = 1 / 8.2x10-6 (s) = 122 x ´103 (s) = 122kHz
(div.) x Sensitivity read on
28
x Probe factor