Chapter 5 Specifications  RIGOL 
DL3000 User’s Guide  5-3 
Readback Resistance 
Model  Range  Resolution 
DL3021 
0.08 Ω~15 kΩ 
(0.0667 S~0.5 S) 
2 mA/Vsense 
DL3021A 
DL3031 
0.08 Ω~15 kΩ 
(0.0667 S~0.5 S) 
2 mA/Vsense 
DL3031A 
 
Model  Range  Resolution 
DL3021 
0 ~ 200 W  100 mW 
DL3021A 
DL3031 
0 ~ 350 W  100 mW 
DL3031A 
 
Protection Function 
Overcurrent protection (OCP), overvoltage protection (OVP), overpower protection (OPP), 
overtemperature protection (OTP), as well as local/remote reverse voltage (LRV/RRV) 
protection. 
 
Model  Current  Voltage 
DL3021 
±(0.01%±10 mA)  ±(0.01%±10 mV) 
DL3021A 
DL3031 
±(0.01%±10 mA)  ±(0.01%±10 mV) 
DL3031A 
 
Input Resistance 
350 kΩ 
 
Mechanical 
Dimensions  239 mm(W) x 157 mm(H) x 442 mm(D) 
Weight  Net weight: 7.58 kg 
 
Power 
AC Input (50 Hz~60 Hz)  115 Vac±10%, 230 Vac±10% (max: 250 Vac) 
Maximum Input Power  <30 VA 
 
Interface 
USB Device Interface  1 
USB Host Interface  1 
LAN Interface  1 (optional) 
RS232  1