Extech Instruments MS420 User Manual page 74

Trigger
Trigger sensitivity
（Edge trigger）
Triggering level range
Triggering level accuracy
(typical) which is
applicable to the signal
with rise and fall time
equal to or longer than
20ns
Trigger displacement
50% level setting
(Typical).
Trigger sensitivity (Video
triggering and typical
mode)
Signal system and
line/field frequency (Video
triggering mode)
Measurement
Cursor measurements
Auto measurements
DC
CH1 and CH2: 1div (DC～full bandwidth)
coupling
AC Same as the DC coupling when it is
coupling equal to or larger than 50Hz.
±6 divisions from the screen center
±0.3 divisions
655 divisions for pre-triggering and 4 divisions for
post- triggering
Operation with the input signal frequency equal to or
larger than 50Hz.
2 divisions of peak-to-peak value
Supports NTSC, PAL and SECAM broadcasting
systems of any field or line frequency
Voltage difference and time difference between
cursors
Peak-to-Peak voltage, mean voltage, root mean
square value, frequency and period
(MS420 0nly):Vmax, Vmin, Vtop, Vbase, Width,
Overshoot, Pre-shoot, Rise time, Fall time, ﹢Width, ﹣
Width, ﹢Duty, ﹣Duty, Delay A→B↑, Delay A→B↓
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