Rigol DM3068

RIGOL
IV DM3068 Performance Verification Guide
The disturbance tests of all models conform to the P/F values of A based on the standard
of EN 61326: 1997+A1+A2+A3 instead of P/F values of B.
Input Terminal Protection Limit
The protection limits are defined for the input terminals.
1． Main input (HI and LO) terminals
The HI and LO input terminals are used for voltage, resistance, capacitance, continuity,
frequency and diode measurements. Two protection limits are defined for these terminals.
1) HI-LO protection limit: 1000VDC or 750VAC; this is also the maximum measurable voltage.
The limit can be expressed as up to 1000Vpk.
2) LO-ground protection limit: the LO input terminal can safely float to 500Vpk at most relative
to the ground.
Since the protection limit of the HI input terminal is up to 1000Vpk relative to the ground, the
sum of the “floating” voltage and measured voltage cannot exceed 1000Vpk.
2． Sampling (HI Sense and LO Sense/200mA) terminals
The HI Sense and LO Sense/200mA terminals are used for 4-wire resistance measurement.
Two protection limits are defined for these terminals.
1) HI Sense-LO Sense/200mA protection limit: 200Vpk.
2) LO Sense/200mA-LO protection limits: 0.5Vpk. The current input fuse on the rear panel
provides up to 500mA protection limit for the current passing through the LO
Sense/200mA terminal.
3． Current input (10A and Sense/200mA) terminals
The 10A and LO terminals are used for the current measurements of 2A and 10A ranges
respectively. The internal fuse of the multimeter provides 10A protection limit for the current
passing through the 10A terminal. The LO Sense/200mA and LO terminals are used for
current measurements ranging from 200uA to 200mA. The current input fuse on the rear panel
provides up to 500mA protection limit for the current passing through the LO Sense/200mA
terminal.
NOTE:
In order to prevent the fuse from blowing out and protect the multimeter, please
use the current input terminals according to the following requirements.
1) Do not connect the 10A and LO Sense/200mA input terminals to the current
measurement circuit at the same time.
2) Only use the 10A and LO terminals for measurements when the AC+DC RMS value of the
current under measurement is within 200mA and 10A.
3) When making current measurement, select a proper current input terminal according to the
estimated current magnitude before connecting the multimeter to AC power supply.
4) The current input into the 10A terminal cannot exceed 13.5A; otherwise, the internal fuse
of the multimeter will be burned out. The current input into the LO Sense/200mA
terminal cannot exceed 650mA; otherwise, the current input fuse on the rear panel may be
burned out.