RS PRO RSPD3303C Quick Start Manual

Quick Start

RSPD3303C

Programmable DC Power Supply

General Safety Summary

Please review the following safety precautions carefully to avoid
personal injury or damage to this product or any product connected

to it. To prevent potential danger, please use the instrument as
specified.

Use proper power cord

Only the power cord designed for the instrument and authorized by
local country could be used.

Power supply

AC Input Voltages: 100V/110V/220V/230V ±10%, 50/60Hz.

Use proper fuse

The fuse types: 100V/110V(T6.3A/250V) 220V/230V
(T3.15A/250V)
Make sure to use the correct type of fuse before turning on the
instrument.
Do not connect the power cord before replacing the fuse.
Find out the reason why the fuse burned out before replacing the
fuse.

Ground the instrument

The instrument is grounded through the protective terra conductor
of the power cord. To avoid electric shock, the grounding conductor
must be connected to the earth. Make sure that the instrument is
properly grounded before any inputs or outputs.

Observe all terminal ratings

To avoid fire or electric shock, please observe all ratings and
symbols on the instrument. Read this guide carefully to know more
details about the ratings before connection.

2

Keep proper ventilation

Inadequate ventilation may cause an increase of temperature,
which will lead to further damage. Please keep proper ventilation
and check the fan and air-vents regularly when using the
instrument.

Operate condition

Location: indoor, no strong light, almost no Interfering pollution
Comparative humidity: <80%
Altitude: <2000m
Temperature: 0℃ to 40℃

Do not operate in an explosive atmosphere

To avoid personal injury or damage to instrument, please do not
operate in an explosive atmosphere.

Keep surface of the product clean and dry

To avoid dust or moisture in the air, which may influence the
performance of the instrument, please keep surface of
the product clean and dry.

3

Safety Terms and Symbols

Terms may appear on the product:

DANGER
WARNING
CAUTION:

: Indicates direct injury or hazard that may happen.

: Indicates potential injury or hazard that may happen.

Indicates potential damage to the instrument or other

property that may happen.

Symbols may appear on the product:

Hazardous

Voltage

Protective

Earth Ground

Warning

Earth

Ground

Power

Switch

4

Brief Introduction

RSPD3303C LED series Programmable DC Power Supply is
convenient, flexible and multi-function. It is designed with three
groups of independent output terminals, the output voltage of two
groups is adjustable and another group is fixed to select: 2.5V, 3.3V,
and 5V. The instrument also provides output short circuit and
overload protection.

Main Features



Three independent output channels, two of which are

controllable, with a total power up to 195W



Compatible design for power voltage: 100V, 110V, 220V and

230V to satisfy different power network



Capable of saving and recalling set parameters



Perfect PC software to realize the real-time control through

USBTMC.

5

Chapter 1 Quick Guide

In this chapter, we mainly introduce the panel display interface
and inspecting the new machine. Reading the following steps will
give you a quick understanding on operation.

General Inspection

1. Inspect the shipping container.

Keep the damaged shipping container or cushioning material
until the contents of the shipment have been completely
checked and the instrument has passed both electrical and
mechanical tests.

2. Inspect the instrument.

If there are instruments found damaged, defective or failure in
electrical and mechanical tests, please contact us.

3. Check the accessories.

Please check the accessories according to the packing list. If the
accessories are incomplete or damaged, please contact us

.

6

Safety Considerations

To ensure that the instrument can work normally, please conduct
necessary inspection before using the RSPD3303C.

Input Power Requirement

The RSPD3303C allows a 50Hz/60Hz frequency, and four levels of
AC power: 100V/120V/220V/230V. You can select required power

voltage with the

“DIP

Switch

” at

the rear panel according to the

actual demand.

Warning

To switch to the required power voltage, please disconnect the
power cord first.

Electrical Check

Please use the power cord provided and connect the
instrument to AC power. Check the power as follows.

1. Connect the power supply

Warning

To avoid electric shock, please make sure that the instrument is
grounded correctly.

2. Turn on the power switch

Press the button POWER to enter boot interface, the system
then returns to the default setting.

7

The Front Panel

1

2

3

4

5

6
7
8

10 11 12 13 14 15

NO.

Description

NO.

Description

1 Logo 9 CH3 DIP Switch

2 LED Display 10 Power Switch

3 Model 11 CH1 Output Terminal

4 Configuration button 12 Ground Terminal

5 Multi-function knob 13 CH2 Output Terminal

6 Fine Adjust button 14 CV/CC Indicator Light

7 Voltage/Current button 15 CH3 Output Terminal

8 Channel Control button

9

8

Instruction for Buttons

Buttons for setting parameters

NO.1- 5

SER

PARA

LOCK

SAVE

RECALL

: Press the button to choose the storage location

: Press the button to set series mode of CH1/CH2.

: Press the button to set parallel mode of CH1/CH2.

: Long press the button to turn on/off the keylock function.

: Press the button to enter the storage system for saving files.

: Press the button to enter the storage system for recalling files.

Buttons for controlling the channel

CH1

CH2

: Press the button to select CH1 as the current channel

: Press the button to select CH2 as the current channel

ON/OFF

CH3 ON/OFF

ALL ON/OFF

Other buttons

FINE

V

: Press the button to turn on/off output of the current channel

: Press the button to turn on/off the CH3 output.

: Press the button to turn on/off all channels

: Press the button to open the fine adjust function and modify the

parameter in the minimum step

A

: To select between voltage and current.

9

The Front Panel Terminals

The positive/negative output terminals of CH1, CH2, CH3, and the
common GND for CH1, CH2 are located on the front panel. Refer
to later “control panel operation” for wiring method details.

10

User Interface

1: Channel Logo

1

2

3

2 : Voltage set/Readback value

3 : Current set/Readback value

11

The Rear Panel

7

6

1

5

4

2

3

Description:

1

Warning message

2

AC power DIP switch

3

Instruction for the AC input voltage

4

AC power socket

5

Fan vent

6

CE certification mark

7

USB interface

12

Output Checking

To ensure the instrument is operating correctly,
please check the output voltage and current before load is connected.

1. Output voltage checking

(1) With the instrument no load, turn on the power, and make

sure the current value displaying is not zero

(2) Check the output voltage of CH1/CH2

Turn on CH1/CH2 channel and the instrument will work

in CV mode. Check whether the voltage value is
adjustable from 0V to 32V.

2. Current output check

(1) Turn on the power.
(2) Check the output current of CH1/CH2.

Use an insulated wire to connect the positive and negative

terminal of CH1/CH2

(3) Turn on CH1/CH2

Select voltage and revolve the knob to set the value to 32V
Select current and revolve the knob to set the value to 0A

Check whether the current value is adjustable from 0A to

3.2A.

13

Chapter 2 Control Panel Operation

In

this chapter，the function and operation of RSPD3303C control

panel will be introduced in detail to give you an all-around
understanding of it.

Brief introduction

Output Summary
CH1/CH2 Independent Output
CH3 Independent Output
Parallel Output
Series Output
Save and Recall

14

Output Summary

RSPD3303C is designed with three independent outputs, two of
which are adjustable in voltage value and the other includes a set of
selectable voltage values: 2.5V, 3.3V or 5.0V.

Independent/Parallel/Series

RSPD3303C has three output modes: independent, parallel and
series that could be selected through the track switch on the front

panel. In independent mode, the output current and voltage are
controlled respectively. In parallel mode, the current value is twice
that of single channel. In the series mode, the voltage value is twice
that of single channel.

Constant Current/Voltage

In constant current mode (series/track mode), the current value is rated.
When the voltage value are under its rating, the indicator light displays
red. The instrument will automatically return to constant voltage mode
when the current value is under rated. In parallel 1 mode, the accessory
channel remains in constant current mode neglecting shift of the current
value.
In constant voltage mode, the voltage value is rated. When the current
value are under its rating, the indicator light dispays green.
The instrument will turn to constant current mode when the current
value returns to its rating.

15

CH1/CH2 Independent Output

Instruction CH1 and CH2 are working in independent mode and

insulated from the ground.

Output ratings 0~30V/0~3A (Max: 32V, 3.2A)

Operation steps

1. Make sure that parallel/series mode is off.

2. Connect load to the positive and negative terminals of CH1/CH2.

3. Set the voltage (current) value of CH1/CH2: Firstly, press V (or A )
to select the voltage (current) parameter needed to modify. Then
revolve the multi-function knob to set the wanted value (You
could press FINE to make accurate adjusting).
Coarse adjusting: 0.1V or 0.1A each step.
Fine adjusting: the least precision each step.

4. Open output: Press ON/OFF button to turn on the output, the

channel works in CC or CV mode and its indicator light gets
lit immediately.

16

CH3 Independent mode

Instruction CH3 works independently from CH1, CH2, and its

voltage and current ratings are: 2.5V, 3.3V, 5V, 3A.

Output ratings 2.5V/3.3V/5V, 3A

Operation steps:

1. Connect the load to the positive and negative terminal of CH3

channel.

2. Select the required voltage value by moving the

“DIP switch”

of

CH3.

3. Open the output: Press ON/OFF button to turn on the channel

and the indicator light gets lit immediately.

CV

CC

When the current value gets higher than 3A, the overload indicator
light turns red and the working mode of CH3 turns to CC mode from

CV mode.

Note:

“Overload” does not mean abnormal operation.

17

CH1/CH2 Series Mode

Instruction：In the series mode, CH1 and CH2 are linked internally

into one channel controlled by CH1. The output
voltage value is twice compared with that of single
channel.

Output ratings 0~60V/0~3A (Max: 64V, 3.2A)

Operation steps

：

1. Press the SER to start the Series mode, and the indicator light

turns bright

2. Connect the load to the positive terminal of CH2 and the

negative terminal of CH1

3. Turn on CH1 and set its current value to 3A. In the default setup,

the instrument works in “Coarse”, you can turn to “Fine” by

pressing FINE

Coarse: 0.1V or 0.1A each step
Fine: the least precision each step

4. Turn on CH1and set the output voltage/current value by

revolving the multi-function knob

5. Press ON/OFF button to open the output.

Note:

You can identify the current working state “CC” or “CV” by

referring to the indicator light.(red means CV, green means CC).

18

CH1/CH2 Parallel Mode

Instruction

In the parallel mode, CH1 and CH2 are linked internally

into one channel controlled by CH1. The output current
value is twice as much as the single channel.

Output ratings 0~30V/0~6A (Max: 32V, 6.4A)

Operation steps:

1. Press the PARA button to start Parallel mode, and the indicator

light turns bright immediately

2. Connect the load to the positive and negative terminals of CH1

3. Press ON/OFF button to open the output and the indicator light

turns bright.
Turn on CH1 and set its output voltage/current value by
revolving the multi-function knob. In the default setup, the
instrument works in “Coarse”, you could turn to “Fine” by

pressing FINE button.

Note:

You can identity the current working state “CC” or “CV” refer

to the indicator light.(red means CV, green means CC). In
parallel mode, CH2 only works in CC mode.

19

Save and Recall

Five groups of setups can be saved in memory. Contents of setups
including:



Independent/series/parallel mode



Output voltage/current value

Steps for saving setup

1. Set the state needed to save

2. Press SAVE to enter the save interface

3. Select the wanted file group by pressing NO.1-5

4. Press SAVE again to save the current state to the specified file

group.

Steps for recalling setup

1. Press RECALL to enter the recall interface

2. Select the wanted file group by pressing NO.1-5

3. Press RECALL again to read the previously saved file.

20

Version Upgrade

The software of the instrument is upgraded with a fixed name file
via PC management software with USBTMC. The upgrade method

is below:

Upgrade in normal Interface

1. Open the EasyPower software after correct connection of the

USB cable with the instrument.

2. Select version in the menu bar, and then choose upgrade in the

Drop-down menu to enter USB firmware upgrade interface:

Figure 1

3. Click the “Normal Mode” option, then select the “ugf” format

upgrade file.

21

Figure 2

Figure 3

4. As shown in figure 4, click

“Upgrade”

to

start upgrading.
The instrument will run the upgraded software as soon as the
upgrading completed.

Figure 4

22

Upgrade via the Guiding Procedure

Upgrading via the guiding procedure can be used if the previously
detailed method failed.

Specific steps:

1. Press the power button to start the instrument, and it will enter
the guide procedure mode.

2. As illustrated in figure 2, select the “Firmware Mode” option instead ,
then follow the upgrade steps detailed previously.

23

Chapter 3 Remote Control

SCPI Commands can be used to conduct remote control on the
RSPD3303C Power Supply through the USBTMC. To utilise the
remote control, the installation of EasyPower or NI（Measurement &
Automation ） software is required prior to connecting the
instrument with a USB cable.

Command List

1. *IDN?

2. *SAV

3. *RCL

4. INSTrument {CH1|CH2}

5. INSTrument ?

6. MEASure:CURRent?

7. MEAsure:VOLTage?

8. [SOURce:]CURRent <current>

9. [SOURce:]CURRent ?

10. [SOURce:]VOLTage <volt>

11. [SOURce:] VOLTage?

12. OUTPut

13. OUTPut:TRACk

14. SYSTem:ERRor?

15. SYSTem:VERSion?

16. SYSTem: STATus?

24

Command Description

1.*IDN?

Command format

Description

Return Info

Example

2.*SAV

*IDN?

Query the manufacturer, product model, series NO. and

software version.

Manufacturer, product model, series NO., software

version.

RSPD3303C, SPD00001130025, .01.01.02.

Command format
Description

Save the current state in nonvolatile memory with the

*SAV <name>

specified name.

Example

3.*RCL

Command format
Description
Example

*SAV 1

*RCL <name>

Recall state that previously saved.

*RCL 1

25

4. INSTrument

Command format
Description
Example

Select the channel that will be operated.

INSTrument CH1

Command format

Description
Example
Return Info

5. MEASure

Query the current operating channel

INSTrument?

CH1

INSTrument <CH1|CH2>

INSTrument?

Command format
Description

Example
Return Info

Query current value for specified channel, if there is no

MEASure: CURRent? CH1

3.000

Command format

Description

Example
Return Info

Query voltage value for specified channel, if there is no

MEASure: VOLTage? CH1

30.000

MEASure: CURRent? < CH1|CH2>

specified channel, query the current channel.

MEASure: VOLTage? < CH1|CH2>

specified channel, query the current channel.

26

6. SOURce

Command format

Description
Example

Set current value for the current channel

CH1:CURRent 0.5

<SOURce:>CURRent <value>

<SOURce>:={CH1 | CH2}

Command format

Description
Example
Return Info

Query the current value for the current channel.

CH1: CURRent?

0.5

Command format

Description
Example

Set voltage value for the current channel

CH1: VOLTage 25

<SOURce>: CURRent?

<SOURce>:={CH1 | CH2}

<SOURce>: VOLTage <value>

<SOURce>:={CH1 | CH2}

Command format

<SOURce>: VOLTage?

<SOURce>:={CH1 | CH2}

Description
Example
Return Info

Query the voltage value for the current channel.

CH1: VOLTage?

25

27

7. OUTPut

Command format

Description
Example

Turn on/off the specified channel.

OUTPut CH1, ON

OUTPut <SOURce>, <state>

<SOURce>:={CH1 | CH2} <state>:={ON | OFF}

Command format

Description
Example

8. SYSTem

Select the operation mode

OUTPut: TRACK 0

Command format

Description

Query the error code and the information.

Command format

Description
Example
Return Info

Query the software version.

SYSTem: VERSion?

1.01.01.02

OUTPut: TRACK <NR1>

<NR1>:={0[Independent] | 1[Series] | 2[Parallel]}

SYSTem: ERRor?

SYSTem: VERSion?

28

Bit NO.

Corresponding State

0

0: CH1 CV mode 1: CH1 CC mode

1

0: CH2 CV mode 1: CH2 CC mode

2,3

01: Independent mode 10: Parallel mode
11: Series mode

4

0: CH1 OFF 1: CH1 ON

5

0: CH2 OFF 1: CH2 ON

Command format
Description
Example
Return info
Instruction

Query the current working state.

SYSTem: STATus?

0x0224

The return info is in Hexadecimal format, which means

SYSTem: STATus?

that you must translate the return info into binary format.

The correspondence relationship is as shown below.

29

Specification

Test conditions: warm-up for about 30minitus, with temperature
between +20℃~+30℃.

Output
Ratings

Constant
Voltage Mode

Constant
Current Mode Load change rate ≤0.2%+3mA

CH3

Tracking
Operation

Parallel Mode Power change rate ≤0.01%+3mV

CH1/CH2 independent
CH1/CH2 series
CH1/CH2 parallel
CH3

power change rate

Load change rate ≤0.01%+3mV(rating current ≤ 3A)

Ripple and noise
Recover time

Temperature coefficient
Power change rate

Ripple and noise
Power change rate
Load change rate
Ripple and noise

Track error

0～30V , 0～3A

0～60V , 0～3A

0～30V , 0～6A

2.5V/3.3V/5.0V , 0～3A

≤0.01%+3mV

≤0.02%+5mV(rating current

≤2mVrms（5Hz

≤100μs(50%

load 0.5A)

≤300ppm/℃

≤0.2%+3mA

≤3mArms

≤5mV

≤15mV
≤2mVrms（5Hz

≤0.5%+10mV of Master(No Load)

～

load change ,minimum

～

＞

1MHz）

1MHz）

3A)

Series Mode

Resolution

Display

Accuracy

Insulation

Load change rate

Power change rate
Load change rate
Voltage
Current
Ammeter
Voltmeter
Set precision

Readback precision

Between base and
terminal

Between base and AC
power cord

≤0.01%+3mV(rating current≤3A)

≤0.02%+5mV(rating current＞3A)

≤ 0.01%+5mV
≤ 300mV

Voltage: 10mV

Current: 10mA

3.2A full scale, 3 digits LED display

32V full scale, 4 digits LED display

Voltage：±（0.5% of reading + 1digit）

Current：± (0.5% of reading + 1digit)

Voltage：±（0.5% of reading + 1digit）

Current：± (0.5% of reading + 1digit)

20MΩor above (DC 500V)

30MΩor above (DC 500V)

30

Operating
environment

Storage
environment

Power supply AC 100V/120V/220V/230V±10%, 50/60HZ

Volume

Weight

275mm x 225mm x 136mm

7.5kg

Indoor
Altitude

Environment temperature
Comparative humidity
Installation level
Pollution level
Environment temperature

Comparative humidity ≤ 70%

≤2000 m

0 ~ 40℃

80%

Ⅱ

2

-10 ~ 70℃

31