SIGLENT SPD1168X User manual

SIGLENT
SPD1168X User Manual 1
User Manual
SPD1168X Programmable Linear DC
Power Supply
UM0501X-E01A
2018 SIGLENT TECHNOLOGIES CO., LTD

SIGLENT
SPD1168X User Manual I
Copyright and Declaration
Copyright
SIGLENT TECHNOLOGIES CO.，LTD. All Right Reserved.
Trademark Information
SIGLENT is a registered trademark of SIGLENT TECHNOLOGIES.
Declaration
SIGLENT products are protected by patent law in and outside of the
People’s Republic of China
.
SIGLENT reserved the right to modify or change the specifications and
price of the product
Information in this publication replace all previous corresponding material
Any copying, extracting or translation of the content of this manual is not
allowed without permission from SIGLENT.

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II SPD1168X User Manual
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 the proper power cord
Only the power cord designed for the instrument and authorized by the local
country should be used.
Power supply
AC Input Voltages: 100/120/220/230 V ±10%，50/60 Hz
Use the proper fuse
The fuse type: 100/120 V: T6.3A/250V
220/230 V : T3.15A/250V
Make sure to use the correct type of fuse before turning on the instrument.
Find the cause of the fuse failure before replacing the fuse and connecting
the power cord.
Ground the instrument
The instrument is grounded through the protective Earth conductor of the
power cord. To avoid electric shock, the grounding conductor must be
connected to the Earth ground. Make sure that the instrument is properly
grounded before any activating any inputs or outputs.
Examine all the terminal ratings
To avoid fire or electric shock, please examine all ratings and symbols on the

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SPD1168X User Manual III
instrument. Read this guide carefully to learn more details about the ratings
before connection.
Keep proper ventilation
Inadequate ventilation may cause an increase of temperature within the
instrument, which can lead to instrument damage. Please maintain proper
ventilation and check the fan and air-vents regularly when using the
instrument.
Operating conditions
Location: indoor, no excessive bright lighting, minimal air pollution
Relative humidity: < 80%
Altitude：< 2000 m
Temperature: 0 ℃to 40 ℃
Electrostatic Prevention
Operate in an electrostatic discharge protected area environment to avoid
damages induced by static discharges. Always ground both the internal and
external conductors of the cable to remove static before connecting.
Do not operate in an explosive atmosphere
To avoid personal injury or damage to the instrument, please do not operate
in an explosive atmosphere.
Keep surface of the product clean and dry
Avoid dust and moisture in the air as they can influence the performance of
the instrument. Please keep surface of the product clean and dry.

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IV SPD1168X User Manual
Safety Terms and Symbols
Terms may appear on the product:
DANGER: Indicates direct injury or hazard that may occur.
WARNING: Indicates potential injury or hazard that may occur.
CAUTION: Indicates potential damage to the instrument or other property
that may occur.
Symbols may appear on the product:
Hazardous
Hazardous
power
Protective
Earth Terminal
Warning
Earth
Ground
Power
switch

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SPD1168X User Manual V
SPD1168X Brief Introduction
The Siglent SPD1168X Programmable DC Power Supply has a 2.8 inch
TFT-LCD screen, programmable output, and real time graphical trending
display. It has maximum output values of 16 V/8 A, and remote sensing as
well as output short circuit and overload protection. The SPD1168X is
suitable for a variety of applications in research and development, production,
and repair.
Main features:
Single high-precision programmable output: 16 V/8 A, total power
available is 128 W
Compact and easy to use, ideal for bench power supply
Stable, reliable and low noise: ≤ 350 uVrms/3 mVpp

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VI SPD1168X User Manual
Fast Transient Response Time: < 50 μs
Maximum resolution of 1 mV, 1 mA with 5-digit voltage and 4-digit current
display.
Timer function sequences preset output values
High resolution 2.8 inch TFT LCD (240*320 pixels)
Two output modes: two-wire output and remote sense compensation
function (maximum compensation up to 1 V)
Four input/line voltage selection choices includes 100 V, 110 V, 220 V
and 230 V to satisfy different requirements
Intelligent temperature controlled fan, effectively reduces noise
Bright, clear graphical interface, with waveform display
Five internal system parameters save/recall, support for data storage
space expansion
Comes with EasyPower PC software. Real-time control via USB, LAN,
support SCPI command set and LabView driver package to meet the
remote control and communication requirements

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SPD1168X User Manual VII
Content
Copyright and Declaration ................................................................................I
General Safety Summary.................................................................................II
Safety Terms and Symbols ............................................................................ IV
SPD1168X Brief Introduction .......................................................................... V
Chapter 1 Start Guide......................................................................................1
1.1 General Inspection...........................................................................2
1.2 The Front Panel ...............................................................................3
1.3 The Rear Panel................................................................................6
1.4 Connect Power...................................................................................8
1.5 User Interface...................................................................................10
1.6 Output Inspection...........................................................................12
1.7 Fuse Replacement.........................................................................13
Chapter 2 Control panel operate....................................................................15
2.1 Output summary.............................................................................16
2.2 2-wire mode ...................................................................................17
2.3 Remote mode.................................................................................19
2.4 Configuration of LAN interface.......................................................21
2.5 Save and recall ..............................................................................23
2.6 Timer..............................................................................................26
2.7 Waveform display...........................................................................29
2.8 Version information.........................................................................30
2.9 Lock key.........................................................................................31
2.10 Upgrade firmware...........................................................................32
Chapter 3 Remote control..............................................................................35
3.1 Control method...............................................................................35
3.2 Grammar conventions....................................................................36
3.3 Command Summary ......................................................................37
3.4 Command description ....................................................................39
3.5 programming examples..................................................................46

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chapter 4 Common troubleshooting...............................................................59
Chapter 5 Service and Support......................................................................61
5.1 Maintain summary..........................................................................61
5.2 Contact SIGLENT...........................................................................61

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SPD1168X User Manual 1
Chapter 1 Start Guide
In this chapter, we introduce the front panel and display interface of the
SPD1168X, and also tips for how to check and operate the power supply the
first time.
The main content of Chapter 1 includes:
General Inspection
The front panel
The rear panel
Connecting power
User interface
Output Inspection
Fuse Replacement

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2SPD1168X User Manual
1.1 General Inspection
Please check the instrument according to the following steps:
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 is responsible for damages to the instrument resulting
from shipment. SIGLENT will not provide free maintenance or
replacement for shipping damages.
2. Inspect the instrument
If there is damage, defects, or failures in electrical and mechanical tests of
the product, please contact your nearest SIGLENT sales representative.
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.

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SPD1168X User Manual 3
1.2 The Front Panel

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4SPD1168X User Manual
1. LCD Display
2.8 inch TFT display. is used to display system parameter settings,
system output state, menu options, prompt messages, etc.
2. Knob
When setting parameters, rotate the knob to increase or decrease the
value of the digit at the cursor. When browsing the setting object, rotate
the knob to quickly move the cursor.
3. Function button and power key
Setting parameter, press the Fine button to move the cursor to
select the position of digit to be modified.
The right and left direction buttons move the cursor to
select the parameter to be modified.
Press the button for a short period to enter the system message
interface. Press the button for a longer period to activate the
lock function.
Press the button for a short period to enter the timer interface.
Press the button for a longer period to enter the waveform
display mode.
Press the button for a short period to configure the network
connection information. Press the button for a longer period to

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SPD1168X User Manual 5
enter the storage function system.
Press the button to enable/disable the remote sense function.
Press the button to enable/disable the channel output.
4. Output Terminal
Physical output connections to the external circuit.
5. Ground Terminal
This terminal is connected to the instrument chassis and ground wire and
is at ground potential.
6. Sense terminal
Used to sense the actual voltage supplied at the load. This allows the
source to compensate for any voltage drop caused by the leads between
the power supply and the load and increases the accuracy of the voltage
delivered to the load. Especially effective when using higher currents
and/or longer leads.
7. Power key
Turns on or off the instrument.

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1.3 The Rear Panel
1. Warning message
Warning message regarding proper grounding and instrument

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SPD1168X User Manual 7
maintenance.
2. AC input voltage description
The frequency, voltage and the specified fuse should correspond to the
AC input mains.
3. AC power socket
The socket for AC input power.
4. Fuse
The specified fuse must be rated for the input voltage (Please refer to the
“ AC input voltage description “)
5. AC line power selection switch
AC Input Voltages: 100/120/220/230 V
6. LAN interface
RJ45 jack for connection to any user-supplied LAN.
7. USB device
USB-B connector for connection to a user-supplied USB controller.
8. Fan

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1.4 Connect Power
The power supply supports a variety of AC line power input values. For each
line voltage, the rear panel voltage selector settings are different, as shown in
table 1 below.
Table 1: AC input line power specifications
AC power input
Voltage selector
configure
100 VAC ±10%，50 ~ 60 Hz
120 VAC ±10%，50 ~ 60 Hz
220 VAC ±10%，50 ~ 60 Hz
230 VAC ±10%，50 ~ 60 Hz
Please connect the external AC power carefully using the steps below:
1. Check the input power
Make sure that the AC line power to be connected to the instrument meets
the requirements outlined in Table 1.
2. Check the voltage selector on the rear panel
Make sure that the voltage selector setting on the rear panel of the
instrument matches the actual input voltage.

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SPD1168X User Manual 9
3. Check the fuse
When the instrument leaves the factory, the specified fuse is installed.
Please check whether the fuse matches the actual input voltage
according to the "Input Power Requirements" on the rear panel of the
instrument.
4. Connect the power
Connect the instrument to AC power supply using the power cord
provided in the accessories. Then press the button to turn on the
power.
WARNING
Before switching the input power supply voltage, please disconnect
the power supply before setting the voltage selector To the
appropriate gear.
WARNING
To avoid electric shock, make sure that the instrument is correctly
grounded.

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1.5 User Interface
1. Channel output state
2. Remote sense mode
3. LAN connection icon
4. USB connection icon
5. Output mode