Fluke 1625Earth/Ground Manual de usuario Pagina 16

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1625
Users Manual
8
EXT
H
S
ES
E
Switching
Voltage
measurement
Current
measurement
Source
Undervoltage
detection
Supply
voltage
ADC
Comp
Processor
LCD
driver
Display
Relais
driver
Rotary selector
switch buttons
edw003.eps
Figure 2. Description of Functions
Measurement of Interference Voltage (U
ST
)
Fullwave rectification for DC and AC (DC without operational sign, AC signal
sinus calibrated for r.m.s. values). If limit values are exceeded no measurement
will be started.
Measurement of Interference Frequency (F
ST
)
For interference voltage >1 V its frequency is derived from the period time.
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