User Manual

263
────────────────────────────────────────────────────
10.2 Operation Sequence ( Trigger mode setting )
────────────────────────────────────────────────────
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Analog Trigger
Logic Trigger
Window-in Trigger
External Trigger
Timer Trigger
Manual Trigger
Level Trigger
Voltage drop Trigge
r
Period Trigger
･The analog signal input
channels can be used as
trigger source.
･The type of trigger that can
be used for the various
functions is limited.
Triggering occurs when the input signal crosses the preset trigger level
(voltage) with the preset trigger slope (
, ).
( MEM, REC, REC&MEM, FFT )
RMS level Trigger
This function serves to activate recording at preset times. Triggering can b
e
performed at constant intervals within a preset start time and end time.
Select the Trigger Typ
e
Window-out Trigger
Select the Trigger Typ
e
Set upper limit level and lower limit level and activated when the input
signal enters the range between these limits.
( MEM, REC, REC&MEM, FFT)
Set upper limit level and lower limit level and activated when the input
signal leaves this range.
( MEM, REC, REC&MEM, FFT)
・This unit designed to measure commercial power supplies (50/60 Hz).
・This unit detects momentary voltage drops in commercial power
supplies.
・When the peak of the voltage falls lower than the setting level, the
trigger will occur.
( MEM, REC&MEM, FFT)
・The signal of a logic channel can be used as trigger source.
・A trigger pattern and logical operator (AND/OR) are specified, and
triggering occurs when the trigger conditions are met.
・The commercial power supplies, 50/60 Hz and the DC signals can be
measured.
・This trigger occurs when the input signal crosses a predetermined
trigger level (rms value) in a particular direction ("slope":
or ).
( RMS Only )
・An external signal can be used as trigger source.
・The external trigger is activated by either shorting the EXT TRIG terminal
or applying a falling edge signal going below 2.5 V.
The manual trigger is always activated when the MANU TRIG key is
pressed, regardless of trigger source AND/OR linking setting.
This function sets both the period reference voltage and the period range,
and measures the rise (fall) period of the set reference voltage. When
the measured period deviates from the specified range, triggering occurs.
( MEM, REC, REC&MEM, FFT)
See Section 10.8.1.
See Section 10.8.2.
See Section 10.8.2.
See Section 10.8.3.
See Section 10.8.4.
See Section 10.8.5.
See Section 10.9.
See Section 10.10.
See Section 10.11.
See Section 10.12.