True-rms Multimeter
General
Specifications
21
Table 1 Accuracy Specifications (cont.)
Function Range
Resolution
Accuracy
±
([% of Reading] + [Counts])
AC
μ
Amps True-rms
[1]
(45 Hz to 1 kHz)
600.0
μ
A 0.1
μ
A
1.5 % + 3
(2.5 % + 3 >500 Hz)
DC
μ
Amps 600.0
μ
A 0.1
μ
A 1.0
%
+
2
Hz (V input)
[3]
99.99 Hz
999.9 Hz
9.999 kHz
50.00 kHz
0.01 Hz
0.1 Hz
0.001 kHz
0.01 kHz
0.1 % + 2
Notes:
[1] All AC ranges except Auto-V LoZ are specified from 1 % to 100% of range. Auto-V LoZ is specified from 0 V.
Because inputs below 1 % of range are not specified, it is normal for this and other true-rms meters to display non-
zero readings when the test leads are disconnected from a circuit or are shorted together. For volts and
μ
A, crest
factor of
≤
3 at 4000 counts, decreasing linearly to 1.5 at full scale. AC volts is ac-coupled. Auto-V LoZ, AC mV, and
AC
μ
A are dc-coupled.
[2] Temperature uncertainty (accuracy) does not include the error of the thermocouple probe.
[3] Frequency is ac coupled and specified from 5 Hz to 50 kHz.
