UNI-T UPO2102 User Manual page 41

User's Manual
display function so that different brightness can reflect the frequency of different parts of the signal.
Experienced users can quickly judge the signal quality during the debugging process and find the unusual
conditions.
7.5 Ramp Trigger
Ramp trigger refers to triggering when the ramp of signal rising or falling conforms to the setting value. Ramp
trigger menu can set the source, trigger coupling, trigger mode, edge type (rising edge, falling edge), time
condition, the lower limit/ upper limit of time, level setting etc.
(1) Edge Type
a. Rising edge: Perform ramp trigger by using the rising edge of the trigger signal
b. Falling edge: Perform ramp trigger by using the falling edge of the trigger signal.
(2) Time Condition
a. >：It will be generated when the slope time of the trigger signal is greater than the setting slope
time, it can set the lower limit of time.
b. <：It will be generated when the slope time of the trigger signal is less than the setting slope time,
it can set the upper limit of time.
c. ≤≥：It will be generated when the slope time of the trigger signal is basically similar to the setting
slope time or the pulse width of the trigger signal is in the setting scope, it can set the lower/upper
limit of time.
Note：Slope time of trigger signal refers to the figure shown "slope time of rising/ falling edge".
(3) Level Setting
Level setting can set low level, high level and high-low level. Press LEVEL knob on trigger control area
to quickly switch the selection.
a. Low level：Adjust low level threshold of ramp trigger by using LEVEL knob on trigger control area.
b. High level：Adjust high level threshold of ramp trigger by using LEVEL knob on trigger control area.
c. High-low level：Adjust high-low level threshold of ramp trigger by using LEVEL knob on trigger
control area.
(4) The upper/lower limit of time
Set time value and the range can set to 8ns ～ 1s.
Note: In ramp trigger, the setting slew rate value will display on the left corner of the screen. The calculation
formula of slew rate value:
(High level threshold - low level threshold) ÷ Time
For the setting slew rate value, the time here is the slope time value for the setting slew rate.
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Slop time of rising edge Slope time of falling edge
High level threshold
Low level threshold
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