Specifications

RIGOL Chapter 1 Performance & Specifications
Service Guide for DM3058
1-6
[4] Specifications are for sine wave input >5% of range. Add 0.1% of the range for the sine wave
input is 1% ~ 5% of the range.
[5] 30 seconds OFF after 30 seconds ON is recommend for the continuous current higher than DC
7 A or AC RMS 7 A.
[6] For frequency<100 Hz.
True RMS AC Voltage
Measurement Method: AC coupled true RMS measure - up to 1000 V DC bias are permitted on
every range.
Crest factor: ≤ 3 at full scale
Input Impedance: 1 MΩ ± 2% in parallel with 100 pF on any ranges
Input Protection: 750 VRMS on all ranges
AC filter bandwidth: 20 Hz ~ 100 kHz
CMRR (common mode rejection ratio): 60 dB (For the 1kΩ imbalance resistance among LO lead and
<60 Hz, maximum ± 500 VDC).
True RMS AC Current
Measurement Method: DC coupled to the fuse and shunt. AC coupled true RMS measurement
(measures the ac component only)
Crest factor: Crest factor on full range ≤ 3
Max. Input: The DC + AC current peak value <300% of the range. The RMS current
including DC current is <10 A.
Shunt Resistor: 0.01 Ω for 2 A, 10 A
1 Ω for 20 mA, 200 mA
Input Protection: Rear panel: accessible 10 A, 250 V fast-melt fuse
Internal 12 A, 250 V slow-melt fuse
Setting time attentions:
Make sure that the RC return on input terminal has been in a stable state completely (higher than 1
s) before accurate measurement.
Input >300 Vrms (or >5 Arms) will cause the self heating of the signal conditioning component to
generate error, this error is included in the characteristics of the instrument. Internal temperature
variation results from the self heating will cause additional an error on ac range that is lower than
0.03% of readings, and it will disappear after a few minutes.