METREL CS 2890, Инструкция по эксплуатации

Страница: 42 / 96

CS 2890 Power Simulator / Calibrator Operating the instrument
42
4.8 Flickers
Flicker is impression of unsteadiness of visual sensation induced by a light stimulus
whose
luminance or spectral distribution fluctuates with time. Power
Simulator/Calibrator use amplitude modulation according to the IEC 61000-4-15
standard, to provide flicker on voltage outputs.
By enabling Flickers option from the MAIN MENU, flicker is added to the voltage
outputs. Flicker parameters depend on fundamental voltage of the system and selected
system frequency. Pst value may be set as desired in ranges 0.50 to 5.00 in 0.10 steps,
whereas CPM and ΔU/U values are defined according to IEC61000-4-15 standard.
Figure 41: Flicker settings menu
Description of symbols and abbreviations used in FLICKERS screen is shown in table
below.
Table 26: Instrument screen symbols and abbreviations
Pst Short term flicker perceptibility.
CPM
Voltage changes per minute.
ΔU/U
Voltage fluctuation in %.
Table 27: Keys in Flickers screen
F1
RESET
Reset flickers to default.
F2
SET
Refresh (activate) currently set flickers.
Scrolls between Pst and CPM parameters.
Scrolls cursor to select single phase.
ENTER
Enters parameter settings submenu.
Returns to the Main menu.
Closes parameter settings submenu.