Rion VA-12 User Manual

91
Trigger Functions
The trigger functions of the VA-12 can be used for each analysis mode except
for FFT mode (instantaneous value). Four types of trigger operation modes
are available: [Free], [Repeat], [Single], [Time]. In vibration meter mode,
only [Free] and [Time] are available.
Trigger operation modes
Free
In this mode, processing is carried out constantly, regardless of the trigger condition.
Repeat
Processing is carried out every time the trigger condition is met.
START/STOP
key
START/STOP
key
START/STOP
key
Y
1
Y
2
Y
N
Y
1
Y
2
Y
N
Y
N+1
Y
r
T
p
T
p+1
T
p+2
T
q
T
q+1
T
q+2
T
r
T
r+1
T
r+2
T
s
T
s+1
T
s+2
X
p
X
p+1
X
p+2
X
q
X
q+1
X
q+2
X
r
X
r+1
X
r+2
X
s
X
s+1
X
s+2
D
j
D
j+1
D
j+2
D
k
D
k+1
D
k+2
D
l
D
l+1
D
l+2
D
m
D
m+1
D
m+2
Y
1
Y
2
Y
N
Y
N+1
Y
1
Y
2
Y
N
Y
1
Y
2
Y
N
Measure-
ment mode
Vibration
meter
Time wave-
form
FFT
(INST)
FFT (EXP)
FFT
(LIN, MAX)
Processing stopped
Processing completed Processing completed Processing completed
Y
k
: k-th average value
X
k
: k-th instantaneous value
N: Preset average number
k = 1, 2, ......, r, ......
Y
k
=
(N-1)Y
k-1
+X
k
N
k = 1, 2, ......, N
Y
k
=
k
X
i
i =1
k
Exponential
averaging
Linear
averaging
T
1
T
2
T
3
T
N
T
N+1
Y
1
Y
N
Y
3
Y
2
Y
1
Y
2
Y
3
Y
N
Y
N+1
N: Preset average number
Trigger Trigger Trigger Trigger Trigger
Measurement mode
Time waveform
FFT (EXP)
FFT (LIN, MAX)
Measurement stops at
N-th time
Overlapping second
time is disregarded

Rion VA-12 Specifications

General

Brand	Rion
Model	VA-12
Category	Measuring Instruments
Language	English