APPENDIX 
47 
24BSpecifications 
The specifications apply when the GPD-3303 series are powered on 
for at least 30 minutes under +20°C – +30°C. 
 
Output Ratings  CH1/CH2 
Independent 
0 ~ 30V / 0 ~ 3A 
 CH1/CH2 
Series 
0 ~ 60V / 0 ~ 3A 
 
CH1/CH2 
Parallel 
0 ~ 30V / 0 ~ 6A 
 CH3 2.5V/3.3V/5.0V, 3A 
Line 
≤ 0.01% + 3mV 
Voltage 
Regulation 
Load 
≤ 0.01% + 3mV (rating current ≤ 3A) 
≤ 0.02% + 5mV (rating current > 3A) 
 
Ripple & Noise 
≤ 1mVrms (5Hz ~ 1MHz) 
 Recovery Time 
≤ 100μs (50% load change, minimum 
load 0.5A) 
 
Temperature 
Coefficient 
≤ 300ppm/°C 
Current 
Regulation 
Line 
≤ 0.2% + 3mA 
  Load 
≤ 0.2% + 3mA 
  Ripple & Noise 
≤ 3mArms 
CH3 Specification
Regulation 
Line ≤ 5mV 
Load ≤ 15mV 
  Ripple & Noise 
≤ 2mVrms 
Tracking 
Operation 
Tracking Error  ≤ 0.5%+10mV of Master (GPD-3303S) 
≤ 0.5%+50mV of Master (GPD-3303D) 
 Parallel 
Regulation 
Line: ≤ 0.01% + 3mV 
Load: ≤ 0.01% + 3mV 
(rating current ≤ 3A) 
Load: ≤ 0.02% + 5mV 
(rating current > 3A) 
 
Series 
Regulation 
Line: ≤ 0.01% + 5mV 
Load: ≤ 300mV 
Meter Resolution
GPD-3303D Voltage: 100mV 
Current: 10mA 
    GPD-3303 Series User Manual 
48 
 
GPD-3303S  Voltage: 1mV 
Current: 1mA 
A Meter  GPD-3303D  3.2A full scale, 3 digits 0.5" LED 
display 
  GPD-3303S  3.2A full scale, 4 digits 0.4" LED 
display 
V Meter  GPD-3303D  32V full scale, 3 digits 0.5" LED display 
  GPD-3303S  32V full scale, 5 digits 0.4" LED display 
Program 
Accuracy 
GPD-3303D  ± (0.5% of reading + 2digits) 
± (0.5% of reading + 2digits) 
  GPD-3303S  ± (0.03% of reading + 10mV) 
± (0.3% of reading + 10mA) 
Readback 
Accuracy 
GPD-3303D  ± (0.5% of reading + 2digits) 
± (0.5% of reading + 2digits) 
  GPD-3303S  ± (0.03% of reading + 10mV) 
± (0.3% of reading + 10mA) 
Insulation Chassis and 
Terminal 
20MΩ or above (DC 500V) 
  Chassis and 
AC cord 
30MΩ or above (DC 500V) 
Operation 
Environment 
Indoor use, Altitude: ≤ 2000m 
Ambient temperature 0 ~ 40°C 
Relative humidity ≤ 80% 
Installation category: II, Pollution degree: 2 
Storage 
Environment 
Ambient temperature –10 ~ 70°C 
Relative humidity ≤ 70% 
Power Source  AC 100V/120V/220V/230V±10%, 50/60Hz 
Accessories  User manual x1 
Test lead GTL-104 x 2, GTL-105 x 1 
(Europe) Test lead GTL-203 x 1, GTL-204 x 2 
Dimensions  210 (W) x 130 (H) x 265 (D) mm 
Weight  Approx. 7kg 
48BOptions 
 
USB cable  GTL-246  USB 2.0, A-B type