3-22
VIBXPERT 11.2010
Options
Measurement setup for
- Runup/coastdown analysis
(left)
- Orbit
(right)
*'Fixed range', e.g. for a runup /
coastdown curve or impact test.
Tip: Carry out a test measurement in
order to determine the maximum
amplitude.
M
EASUREMENT
RANGE
(
ALL
VIBRATION
MEASUREMENTS
): The measurement
range for the analog channel (A/B) can be automatically matched
to the input signal ('Auto') or set to fixed*. When set to ‘[Value] /
Auto-Up’, the measurement range is automatically increased when
the upper limit is exceeded.
L
OW
PASS
FILTER
(A
MPLITUDE
C
OAST
-
DOWN
- P
HASE
): The low pass filter can
be set automatically as a function of the start and stop speeds
(‘Yes’ option). ‘No’ is used if the low pass filter is not used.
W
INDOW
/ N
UMBER
OF
LINES
(I
MPACT
TEST
): The standard window function
for the impact test with an impulse hammer is the rectangular
window; all other parameters are described in section A2.
N
EGATIVE
A
VERAGING
(I
MPACT
T
EST
): Enables an impact test while the
machine is running (1 channel and 2 channels with impulse
hammer). The signals from the running machine are filtered out.
FRF
CALCULATION
(2-
CH
IMPACT
TEST
): Calculation procedure for the
transfer function
- (Frequency Response Function = FRF).
T
RIGGER
TYPE
/
LEVEL
/
START
(S
HOCK
P
ULSE
, V
IBRATION
OVERALL
V
ALUE
, U
SER
AC, I
MPACT
T
EST
)
Level
: The measurement starts as soon as the signal has exceeded
the selected
trigger threshold
(in % of the max. meas. range).
Signal recording can be started before or after the trigger event via
the
Trigger start time
.
S
TART
/ S
TOP
SPEED
(R
UNUP
/ C
OASTDOWN
): RPM at which the measure-
ment should start or stop.
RPM
DEVIATION
(R
UNUP
/C
OASTDOWN
): Storage condition for the mea-
surement values. The current, averaged measurement value is not
saved until the rpm has changed by the value set here (p. 5-11).
RPM
RANGE
(P
HASE
- C
ROSS
C
HANNEL
): Maximum RPM range for calcu-
lating the phase correlation.
Содержание VIB 5.300 EX Series
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