АМM-1130
21
Logic Frequency/Duty Ratio Measurement
The testing chart is shown in the Figure 3-4.The frequency range is of 2.01Hz
～
10MHz
（
Vp 0.35
～
5V
）
, while the duty
ratio measurement range being of 5%
～
94.9%.And the measurement methods are as follows:
1.
Turn on the power switch and set the rotary switch to the position .
2.
Insert the red testing line into the
VΩHz
end and the black testing line into the
COM
end.
3.
Press the
HZ/DUTY
key to select the duty ratio( % ) modes.
4.
Connect the red testing line to high logic level, the black one to low logic level.
5.
Read the measured value from the display screen. If the frequency of the measured signal is lower than 2.01Hz, the
reading will be displayed as zero. If the amplitude of signal is too low or the low level is larger than 0.35 Volt, the
reading will also displayed as zero.
6.
If the frequency of the duty ratio is lower than 5%, the reading will be displayed as UL. If the duty ratio is bigger than
95% the reading will also displayed as OL.
7.
This measurement is of automatic range or manual range, it is available to press the
RANGE
key.
Hz
%
Summary of Contents for ??M-1130
Page 1: ...AMM 1130 USER S MANUAL www tmatlantic com...
Page 18: ...M 1130 18 Figure 3 2 AC Measurement Warning Not try to measure a voltage higher than 1000 Volt...
Page 20: ...M 1130 20 Figure 3 3 DC AC mV Measurement...
Page 22: ...M 1130 22 Figure 3 4 Logic Frequency Duty Ratio Measurement...
Page 24: ...M 1130 24 Figure 3 5 Resistance continuity Test Diode Measurement...
Page 26: ...M 1130 26 Figure 3 6 Capacitance Measurement...
Page 28: ...M 1130 28 Figure 3 8 DC AC A Measurement...
Page 30: ...M 1130 30 Figure 3 9 DC AC mA Measurement...
