SIGLENT SPD3303C Series User manual

SPD3303C Series
Programmable
DC Power Supply
Quick Start
EN_02A

Quick Start 1
Copyright Information
Declaration
SIGLENT products are protected by patent law in and outside of P.R.C.
SIGLENT reserves the right to modify or change parts of or all the specifications or pricing policies
at the company’s sole decision.
Information in this publication replaces all previously corresponding material.
Any method of copying, extracting or translating the contents of this manual is not allowed without
the permission of SIGLENT.
Note: SIGLENT is the registered trademark of SIGLENT TECHNOLOGIES CO., LTD.

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Content
Copyright Information ........................................................................................................................... 1
General Safety Summary ..................................................................................................................... 3
Safety Terms and Symbols................................................................................................................... 4
Brief Introduction .................................................................................................................................. 5
Quick Guide.......................................................................................................................................... 6
Control Panel Operation..................................................................................................................... 14
Remote Control .................................................................................................................................. 23
Troubleshooting.................................................................................................................................. 28
Specification ....................................................................................................................................... 29
Contact SIGLENT............................................................................................................................... 30

Quick Start 3
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.
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.

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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 influence the performance of the instrument, please keep surface
of the product clean and dry.
Safety Terms and Symbols
Terms used in this product. These terms may appear in the product:
DANGER
Indicates direct injury or hazard that may happen.
WARNING
Indicates potential injury or hazard that may happen.
CAUTION
Indicates potential damage to the instrument or other property that may happen.
Symbols used in this product. These symbols may appear on the product:
Hazardous
Voltage
Protective
Earth Ground
Warning
Earth
Ground
Power
Switch

Quick Start 5
Brief Introduction
SPD3303C 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 220W;
◆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

6 Quick Start
Quick Guide
In this chapter, we mainly introduce the panel and display of SPD3303C, as well as the new machine
inspection and attentions at first use. 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.
The consigner or carrier will be responsible for damages to the instrument resulting from shipment.
SIGLENT would not provide free maintenance or replacement.
2. Inspect the instrument.
If there are instruments found damaged, defective or failure in electrical and mechanical tests, please
contact SIGLENT.
3. Check the accessories.
Please check the accessories according to the packing list. If the accessories are incomplete or
damaged, please contact your SIGLENT sales representative.

Quick Start 7
Safety Considerations
To ensure that the instrument can work normally, please conduct necessary inspection before using
the SPD3303C.
Input Power Requirement
The SPD3303C allows a 50Hz/60Hz frequency, and four levels of AC power: 100V/ 120V/ 220V/ 230V.
You can select wanted power voltage with the “DIP Switch ” at the rear panel according to the actual
demand.
Warning
To switch to the wanted power voltage, please disconnect the power cord first.
Electrical Check
Please use the power cord provided as accessory and connects the instrument to AC power. Check
the power as the following steps.
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 to enter boot interface, and system return to the default settings after a while.

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The Front Panel
NO.
Description
NO.
Description
Logo
CH3 DIP Switch
LED Display
Power Switch
Model
CH1 Output Terminal
System Parameter Configuration button
Ground Terminal
Multi-function knob
CH2 Output Terminal
Fine Adjust button
CV/CC Indicator Light
Voltage/Current button
CH3 Output Terminal
Channel Control button

Quick Start 9
Instruction for Buttons
Buttons for setting parameters
: 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
: Press the button to turn on/off all channels;
: Press the button to select CH1 as the current channel;
: Press the button to select CH2 as the current channel;
: Press the button to turn on/off output of the current channel;
: Press the button to turn on/off the CH3 output;
Other buttons
: Press the button to open the fine adjust function and modify the parameter
in the minimum step;
: To select between voltage and current. press the A Button longer to
enter/exit the OCP mode.

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Quick Start 11
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.
User Interface
Channel Logo;
Voltage set/Readback value;
Current set/Readback value;

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The Rear Panel
Description:
Warning message
AC power DIP switch
Instruction for the AC input voltage
AC power socket
Fan vent
CE certification mark
USB interface

Quick Start 13
Output Checking
To make sure the instrument can correctly respond to operation from the front panel, please perform
the output checking, which includes voltage checking when all channels are with no load and current
checking when short circuit occurs.
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 acquiescently works 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;
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.

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Control Panel Operation
In this chapter, the function and operation of SPD3303C 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

Quick Start 15
Output Summary
SPD3303C 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
SPD3303C 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. The indicator light displays
red and the voltage value are under its rating. The instrument will automatically turn to constant
voltage mode when the current value gets less than its dating. (In parallel mode, the accessory
channel remains in constant current mode neglecting shift of the current value.)
In constant voltage mode, the voltage value is rated. The indicator light displays green and the current
value are under its rating. The instrument will turn to constant current mode when the current value
gets up to d its dating.

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CH1/CH2 Independent Output
Instruction:
CH1 and CH2 are working in independent mode and insulated from the ground.
Output ratings
0~32V / 0~3.2A
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 lighted immediately.
Set the OCP mode
Under the condition of the corresponding channel closed, press the A Button longer to enter/exit the
OCP mode. In OCP mode, you can set the overcurrent protection value. If the output current
reaches the overcurrent protection value, the channel output will be closed.

Quick Start 17
CH3 Independent mode
Instruction:
CH3 works independently from CH1, CH2, and its voltage and current ratings are:
2.5V, 3.3V, 5V, 3.2A.
Output ratings
2.5V/ 3.3V/ 5V, 3.2A
Operation steps:
1. Connect the load to the positive and negative terminal of CH3 channel.
2. Select the wanted voltage value by moving the “DIP switch” of CH3.
3. Open the output: Press button to turn on the channel and the indicator light gets lighted
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.

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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/ 0~3.2A
Operation steps：
1. Press the 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 3.2A. In the default setup, the instrument works in
“Coarse”, you can turn to “Fine” by pressing ;
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 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)