80
Electrical Characteristics
Display update
rate
• V, Continuity,
Ω
,
nS, Diode, Clamp,
Frequency, A, dBm, dBV: 5 times/s
• Electrostatic
capacity
0.05 to 5 times/s (varies
depending on the measured
value)
• Temperature 1 time/s (including disconnection
check)
• Peak measurement Up to 155 times/s when peak
value is updated
• DC+ACV 2.5 times/s
Input impedance See “Accuracy Table” (p. 81).
Overload protection
Function Overload protection
• ACV, dBm, dBV, Hz,
AC clamp (DT4281)
• DCV
• DC+ACV, Hz
1100 V DC/AC (50 Hz/60 Hz) or 2 × 10
7
V •
Hz, whichever is the lower value
• Voltage applied for 1 minute
• Transient overvoltage 8000 V
• Continuity check,
diode test
•
Ω
, temperature (K)
• Electrostatic capacity
• nS (DT4282)
1000 V DC/AC or 2 × 10
7
V • Hz, whichever is
the lower value
• Voltage applied for 1 minute
• Current steady state under overload 15 mA
or less
• Current transient state under overload 0.8 A
or less
• DCμA, ACμA, DCmA,
ACmA, (4-20mA)%, Hz
630 mA/1000 V fuse
Breaking capacity 50 kA AC/30 kA DC
• DCA (DT4282),
ACA (DT4282), Hz
11 A/1000 V fuse
Breaking capacity 50 kA AC/30 kA DC