
RIGOL
User’s Guide for DM3058/DM3058E
Loading Errors (AC Volts)
In the AC Voltage function, the input of DM3058/DM3058E appears as a 1MΩ
resistance in parallel with 100 pF of capacitance. The test lead that you use to
connect signals to the multimeter will also add additional capacitance and loading.
Table 5-2 shows the multimeter’s approximate input resistance at various
frequencies.
Table 5-2 Approximate input resistance at various frequencies
For low frequencies:
Error (%)
Additional error for high frequencies:
Error (%)
%
1001
)2(
1
1
×
−
×××
+
=
ins
CRF
π
: source resistance
: input frequency
: input capacitance (100 pF) plus test lead capacitance
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