Hioki MR8827, Инструкция по эксплуатации

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192
Analog Signal Triggers
3. Voltage Sag Trigger ( Only)
Triggering occurs when the voltage peak drops below a preset level for more than half a cycle. The
allowable timebase is 20 μs to 50 ms/div.
T 1/2 Period
Trigger Level
Type Parameters
[VDrop]
[L] (Level) Sets the level (voltage value) for the trigger.
(The setting can be made in 1/50 increments.)
[f=] (Frequency) Select 50 or 60 Hz.
RMS: (actual
value)
The target actual value. Changes when the level setting changes.
4. In-Period Trigger, Out-of-Period Trigger
The rising edge and falling edge cycle of the reference voltage is measured, and triggering occurs when
the cycle enters the preset range (In) or leaves the preset range (Out).
Refer to “About period range settings”, “About the trigger point of the Out-of-Period trigger” (p. 194).
Within Period
Range
Out of Period
Range
T
Reference
Voltage Level
Period Upper Limit
Period Upper
Threshold
Period Lower Limit
About the Trigger Point
The trigger point occurs one
sample after the criterion is
met.
Type Parameters
[Per.I]
or
[Per.O]
[L] (Level) Sets the level (voltage value) for the trigger. (The setting can be made in 1/50
increments.)
[S] (Slope) Determines whether triggering occurs when the signal crosses the threshold
(trigger level) on the rising or falling edge. (↑, ↓)
[P↓]
(Period lower
limit)*
1
Available settings are 0 and more than 5 times the sampling frequency. This
cannot be set to be higher than the Period upper limit setting. (When the setting is
0, the lower limit is disregarded, and triggering occurs only on the upper limit.)
[↑]
(Period upper
limit)* 1
The setting range extends to 20,000 times the sampling frequency. This cannot
be set to be lower than the Period lower limit setting.
[F] (Filter) Triggering occurs when the trigger criteria are met within the specified filter width.
This is useful to prevent spurious triggering due to noise.
(
: Off, 0.1 - 10 div, : Off, On*) *: Filter width 10 ms.
*1 Changes when the timebase changes.