81
Electrical Characteristics
5.2
Electrical Characteristics
Noise rejection
characteristics
NMRR
• DCV: -60 dB or more (50 Hz/60 Hz)
Noise rejection
characteristics
CMRR
• DCV: -100 dB or more (DC/50 Hz/60 Hz, 1 k
Ω
unbalance)
• ACV: -60 dB or more (DC/50 Hz/60 Hz, 1 k
Ω
unbalance)
Response time
(Auto range)
• Power ON time: Within 2 seconds
(When the range does not move until the measured
value is displayed on the LCD screen)
• DCV: 0.6 to 0.7 seconds (0 V
→
100 V auto range
operation)
*1, *6
0.7 to 0.8 seconds (0 V
→
100 V auto range
operation)
*2, *3, *4, *5, *6
• ACV: 0.6 to 0.7 seconds (0 V
→
100 V auto range
operation)
*6
•
Ω
: Approx. 1.0 to 1.1 seconds (In
fi
nity
→
0
Ω
auto
range operation)
*6
Display update
rate
• Measured value: 5 times/s (excluding electrostatic
capacity, frequency, temperature after the range is
fi
xed)
*7
0.05 to 5 times/s (varies depending on the
electrostatic capacity)
*7
1 to 2 times/s (frequency)
*7
1 time/s (temperature)
*7
• Bar graph: Updated 40 times/s
Dielectric
strength
8.54 kV AC sine wave (50 Hz/60 Hz, 60 seconds)
(current sensitivity: 2 mA) Between the measurement
terminal and chassis
Maximum rated
voltage between
terminals
V terminal: 1000 V DC (1700 V DC
*3
) /1000 V AC or
2×10
7
V • Hz
*1: DT4252, *2: DT4253, *3: DT4254, *4: DT4255, *5: DT4256
*6: Until the values stabilize within the accuracy speci
fi
cation range.
*7: Measured within the measurement range (excluding range movement).
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