7 Voltage measurement (U= and U~)
ARGUS Copper Box
37
Display:
- Current DC voltage in volts
- Current AC voltage in volts
- Current frequency of AC voltage in hertz
Hotkeys/settings s. page 20
Selection of voltage measurement
By default, voltage measurements are
carried out using high-ohm values.
A change in the input resistance is stored
until ARGUS is restarted.
For high-ohm measurement, the input
resistance is at least 1 MΩ (depending on
the measuring range).
Voltage measurement can also be set to
a low-ohm range. Low-ohm measure-
ment is carried out using a 200 kΩ
resistor connected parallel to the input
impedance that is dependent on the
measuring range. Low-ohm measure-
ment permits discharge of coupled
voltage on lines (charged lines).
This load indicates the state (low-ohm,
high-ohm) of the source of any external
voltage.
<Menu>
Opens the Copper Box
menu, see page 20.
<Min/Max>
Display of minimum and
maximum measured values.
<Go>
Continues measuring.