45
UNI-T
®
UT4000 User Manual
Example 2 : Setup for delayed measurement. You can use the delayed measurement
function to measure the time interval between the rising edge of two signal source, i.e. the
time interval between the rising edge of the first cycle of a certain signal source and the
rising edge of the first cycle of another signal source. Measure as follows :
1. As shown in the previous example, select rising delay in the measurement
parameters menu.
2. Press [SELECT] to display the rising delay parameter.
3. Press [CLOSE] to exit the parameter options.
4. The rising delay parameter is displayed in the left bottom corner.
Automatic measurement of voltage parameters
Your UT4000 can automatically measure the following voltage parameters :
Peak-to-peak value (Vpp) : The voltage value from the highest point to lowest point of the
waveform.
Maximum value (Vmax) : The voltage value from the highest point to ground (GND) of
the waveform.
Minimum value (Vmin) : The voltage value from the lowest point to ground (GND) of the
waveform.
Amplitude value (Vamp) : The voltage value from top to base of the waveform.
Mean (Vmid) : Half of the amplitude.
Top value (Vtop) : The voltage value from the level top to ground (GND) of the
waveform.
Base value (Vbase) : The voltage value from the level base to ground (GND) of the
waveform.
Overshoot : The ratio value of the difference between maximum value and top value to
the amplitude value of the waveform.
Preshoot : The ratio value of the difference between minimum value and base value to the
amplitude value of the waveform.
Average value : Average amplitude of signals within 1 cycle.
Root mean square value (Vrms) : The effective value. Energy generated by AC signal
conversion during 1 cycle with respect to the DC voltage that produces equivalent energy,
i.e. root mean square value.
Automatic measurement of time parameters
Your UT4000 can automatically measure the frequency, cycle, rising time, falling time,
positive pulse width, negative pulse width, delay 1
→
2 (rising edge), delay 1
→
2 (falling
edge), positive duty ratio, negative duty ratio and 10 time parameters. Definitions of these
parameters are as follows :
RiseTime : The time taken by the waveform amplitude to rise from 10% to 90%.
FallTime : The time taken by the waveform amplitude to fall from 90% to 10%.
Positive Pulse Width (+Width) : The pulse width when positive pulse is at 50%
amplitude.
Negative Pulse Width (-Width) : The pulse width when negative pulse is at 50%
amplitude.
Rising delay (Rise) : Delayed time of the rising edge of CH1, CH2.
Falling delay (Fall) : Delayed time of the falling edge of CH1, CH2.
Positive duty ratio (+Duty) : Ratio of positive pulse width to cycle.
Negative duty ratio (-Duty) : Ratio of negative pulse width to cycle.
Summary of Contents for UT4000 Series
Page 13: ...2 UNI T UT4000 User Manual Figure 1 1 Front panel of UT4000 Oscilloscopes ...
Page 14: ...3 UNI T UT4000 User Manual Figure 1 2 Schematic diagram for operating the UT4000 front panel ...
Page 15: ...4 UNI T UT4000 User Manual Figure 1 3 Schematic diagram for the display interface ...
Page 74: ...63 Figure 3 14 Dual time base function ...
Page 98: ...87 UNI T UT4000 User Manual This user manual may be revised without prior notice ...
