GMC-I Gossen-Metrawatt GmbH
51
GB
Hysteresis:
HYSt
The hysteresis setting allows for efficient memory utiliza-
tion.
In the memory mode, new measurement data are only
stored as a data block if they deviate from the previously
stored value by an amount which is greater than the
selected hysteresis.
Hysteresis can be set in steps of 1, 2 or 5 digits. These
digits make reference to the measuring range as follows:
The positions of the digits in the pre-selected hysteresis
correspond to the same positions within the measuring
range, but are counted starting at the left.
Example:
A pre-selected hysteresis of 001000 for the
300,000 V measuring range means that only those mea-
surement values which deviate from the previous measure-
ment value by at least 001.000 V are stored.
All measurement values are stored to memory if hysteresis
is set to “ALL”. This may be required, for example, for real-
time analysis at a PC with simultaneous display at the
monitor.
➭
See chapter 23 for entering the “Operating Mode Menu”.
➭
Enter hysteresis as follows:
SEt
↵
V
HYSt
↵
000500
UV
↵
22.2
Trigger Functions
With the help of the trigger functions (except for
trigger events, trigger cont in and mains trig hi, lo), you can
determine which measurement values are stored to mem-
ory. In the following examples for the selection of parame-
ters, V represents trigger variables V, A,
Ω
,
°
C,
μ
F, Hz, dB
and W. Furthermore, the trigger function
in
represents
in
,
out
,
Sto
–
ou
and
Sto
–
in
. An overview (flow chart) of the com-
plete trigger menu can be found in page 54.
Note!
☞
Changing the measuring function has no influence
on the trigger functions. The following trigger
parameters are not active if the sampling rate is less
than (faster than) 50 ms.
triG = OFF
If the triG function is set to OFF, measurement values can
be stored to memory independent of quantity (independent
of parameters H-triG, L-triG, prEtr and rEtriG). However,
storage is dependent upon date and time trigger parame-
ters.
SEt
↵
V
triG
↵
V
↵
VU
0FF
↵
tiME
on ...