Measured Value Storage: Data (Auto-Hold / Compare) - Gossen MetraWatt METRAHIT ENERGY TRMS System Multimeter Operating Instructions Manual

Control Functions

4.4 Measured Value Storage: DATA (auto-hold / compare)

An individual measured value can be automatically "frozen" with
the DATA function (auto-hold). This is useful, for example, when
contacting the measuring points with the test probes requires
your full attention. After the measuring signal has been applied
and the measured value has settled in in accordance with the
"condition" listed in the table below, the measured value is frozen
at the digital display and an acoustic signal is generated. The test
probes can now be removed from the measuring points, and the
measured value can be read from the digital display. If the mea-
suring signal falls below the value specified in the table, the func-
tion is reactivated for storage of the next value.
Measured Value Comparison (DATA compare)
If the currently frozen value deviates from the first saved value by less
than 100 digits, the acoustic signal is generated twice. If deviation is
greater than 100 digits, only a brief acoustic signal is generated.
Note
The selected measuring range cannot be manually changed
as long as the DATA function is active.
The DATA function is deactivated by pressing and holding the
DATA/MIN/MAX key (approx. 1 second), when the measuring func-
tion is changed, or when the instrument is switched off and back
on again.
DATA Function in Memory Mode Operation (rAtE parameter = dAtA)
If dAtA is selected as the storage rate under the StorE > rAtE mea-
suring parameter setting, and if memory mode operation is then
started, measured values "frozen" with activated DATA function are
automatically saved to permanent memory with time stamp.
20
V, A, Hz dB, F, MHz, %
60,000
Digits
6000
Digits
Save
Reactivated
Activated
Function Data/
Measuring
DATA Min/Max
Function
Key
Activate Brief
Save V, A, Hz, dB,
(stabilized F, MHz, %
measured

value)
V, A, Hz, dB,
1) F, MHz, %
Reactivate

Change to
Brief
Min/Max
Exit Long
1
Reactivation results from falling short of specified measured value limits.
2
Two acoustic signals are generated the first time a measured value is saved as a
reference value. For subsequent data hold, two acoustic
signals are only generated if the currently frozen value deviates from the first saved
value by less than 100 digits.
Key: MV = measured value, MR = measuring range
100% of measuring range
10% of measuring range
t [s]
Save
Condition Response from Instrument
Display
Measuring
Digital
Signal
DATA
MV
Blinks
> 10%
Is
rdg.
dis- Static
0L
played
< 10%
Stored
rdg.
Blinks
MV
= 0L
See table in section 4.4.1
Is Is
deleted deleted
GMC-I Messtechnik GmbH
Acous-
tic
Once
Once
2
Twice
Twice