SPD3303X / X-E Series
Programmable DC Power Supply

Main Features

3 independently controlled and isolated outputs: Two 32 V/3.2 A, one 2.5 V / 3.3 V / 5 V / 3.2 A × 1, total 220 W
5 digit Voltage/4 digit Current Display, Minimum Resolution: 1 mV/1 mA (SPD3303X)
Timing function provides programmed output steps
4.3 inch true color TFT- LCD 480 x 272 display
3 types of output modes: independent, series (60 V max), and parallel (6.4 A max)

OVERVIEW

Excellent Output Performance

The SPD3303X/X-E is robust and stable, and can accurately simulate even small voltage or current changes, fully meeting the power requirements of the load.

· Ultra-high resolution: 1 mV, 1 mA
· Excellent setting and readback accuracy to ensure accurate and pure output
· Support panel programming and timing output
· 3 independently controlled and isolated outputs

Convenient Operation and Real-time Display

Support panel timing output function (5 sets of timing settings and output control). With Free PC software EasyPower, comprehensive communication and control requirements can be easily achieved.
The SPD3303X/X-E programmable linear DC power supply employs a 4.3-inch, 160,000-color TFT-LCD liquid crystal screen with a resolution of 480×272 which can display voltage and current clearly, allowing users to understand the output status.

Series/Parallel/Independent Mode

The series-parallel function combines two power supplies into one power supply, which expands the output power range of a single power supply, which brings convenience in some applications. The three independent power supplies can individually control the output switch, and they can be turned on or off at the same time.

Specifications

Channel	CH1:0 ～ 32 V,0 ～ 3.2 A CH2:0 ～ 32 V,0 ～ 3.2 A CH3:2.5/3.3/5.0 V,3.2 A
Display	SPD3303X-E： 4.3 inch true color TFT-LCD 4 digits voltage 3 digits current SPD3303X： 4.3 inch true color TFT-LCD 5 digits voltage 4 digits current
Resolution	SPD3303X-E：10 mV/10 mA SPD3303X：1 mV/1 mA

Constant Voltage Mode
Line Regulation	≤ 0.01%+2 mV
Load Regulation	≤ 0.01%+2 mV
Ripple&Noise	≤ 300 μVrms
Recovery Time	＜ 50 μs（50% load change， minimum load 0.5 A）

Constant Current Mode
Line Regulation	≤ 0.2%+3 mA
Load Regulation	≤ 0.2%+3 mA
Ripple&Noise	≤ 3 mArms

Parallel Mode
Line Regulation	≤ 0.01%+3 mV
Load Regulation	≤ 0.01%+3 mV

Series Mode
Line Regulation	≤ 0.01%+5 mV
Load Regulation	≤ 300 mV

MODEL

Model	Output channel	Dısplay	Resolutıon	Settıng accuracy	Readback accuracy
SPD3303X	CH1/CH2: output voltage 0~32 V output current 0~3.2 A CH3: output voltage 2.5/3.3/5.0 V output current 0~3.2 A	4.3 inch	1 mV/1 mA	voltage: ± (0.03% of reading + 10 mV); current: ± (0.3% of reading + 10 mA)	voltage: ± (0.03% of reading + 10 mV); current±(0.3% of reading + 10 mA).
SPD3303X-E	CH1/CH2: output voltage 0~32 V output current 0~3.A CH3: output voltage 2.5/3.3/5.0 V output current 0~3.2 A	4.3 inch	10 mV/10 mA	voltage: ± (0.03% of reading + 10 mV); current: ±(0.3% of reading + 10 mA)	voltage: ± (0.03% of reading + 10 mV); current ± (0.3% of reading + 10 mA)

COMPARE

Comparatıve Data	SPD3303X/X-E	Keysıght E3631A Serıes	Tektronıx 2230G-30-1
Output	32 V/3.2 A×2, 2.5 V/3.3 V/5 V/3 A×1	+25 V/1 A×1,-25 V/1 A×1， +6 V/5 A×1	30 V/1.5 A×1,30 V/15 A×1， 6 V/5 A×1
Channels	3	1/3	3
Power	220 W	80 ~ 200 W	120 W
Resolutıon (Mın.)	1 mV,1 mA	1 mV,1 mA	1 mV,1 mA
Rıpple Noıse	＜300 µVrms	＜ 350 µVrms	＜ 3 mVpp
Program Accuracy	Voltage:±(0.03% +10 mV) current:±(0.3% +10 mA)	Voltage:±(0.03% +5 mV);current:±(0.04% +3 mA)	Voltage：±(0.03% +10 mV); current：±(0.1% +5 mA)
Interface	USB, LAN and GPIB	RS232,GPIB	USB,GPIB
Dısplay	4.3 inch	N/A	N/A