3 Operating the instrument
17
3.2
U, I, f menu
All important voltage, current and frequency parameters can be observed in the “U, I, f”
menu. Measurements results can be viewed in a tabular (METER) or a graphical form
(SCOPE, TREND). TREND view is active only in RECORDING mode. See section 3.10
for details.
3.2.1 Meter
By entering U, I, f menu, the U, I, f – METER tabular screen is shown
(see figure
below)
.
Figure 3.4: U, I, f meter table screens.
In those screens current on-line voltage and current measurements are shown.
Descriptions of symbol and abbreviations used in this menu are shown in table bellow.
Table 3.3: Instrument screen symbols and abbreviations
Show currently displayed channel.
Current recorder status
RECORDER is active
RECORDER is busy (retrieving data from memory)
RECORDER is not active
Current instrument time
RMS
True effective value U
Rms
and I
Rms
THD
Total harmonic distortion THD
U
and THD
I
CF
Crest factor Cf
U
and Cf
I
PEAK
Peak value U
Pk
and I
Pk
MAX 1/2
Maximal U
Rms(1/2)
voltage and maximal I
½Rms
current, measured after
RESET (key: F2)
MIN ½
Minimal U
Rms(1/2)
voltage and minimal I
½Rms
current, measured after
RESET (key: F2)
f
Frequency on reference channel
Note:
In case of AD converter overloading current and voltage value will be displayed
with inverted color
250.4 V
.
