THORLABS K-Cube KLC101 User manual

KLC101
K-Cube™Liquid Crystal
Controller
User Guide

K-Cube™Liquid Crystal Controller

K-Cube™Liquid Crystal Controller
Table of Contents
Chapter 1 Safety.............................................................................................................................1
1.1. Safety Information...................................................................................................1
1.2. General Warnings....................................................................................................1
Chapter 2 Overview and Setup ....................................................................................................2
2.1. Introduction..............................................................................................................2
2.2. Power Options.........................................................................................................4
2.3. PC Software Overview.............................................................................................4
2.3.1. Introduction.....................................................................................................................4
2.3.2. Software Upgrades ........................................................................................................4
Chapter 3 Getting Started.............................................................................................................5
3.1. Install The Software.................................................................................................5
3.2. Mechanical Installation............................................................................................5
3.2.1. Environmental Conditions..............................................................................................5
3.2.2. Mounting Options...........................................................................................................5
3.2.3. Using the Baseplate.......................................................................................................6
3.3. Electrical Installation...............................................................................................6
3.3.1. Rear Panel .....................................................................................................................6
3.3.2. Supply Voltage and Current Requirements ...................................................................6
3.3.3. Front Panel.....................................................................................................................7
3.3.4. Connecting to a Power Supply.......................................................................................7
3.3.5. Powering Down The Unit ...............................................................................................8
3.4. Connect The Hardware............................................................................................8
Chapter 4 Standalone Operation .................................................................................................9
4.1. Control Panel...........................................................................................................9
4.1.1. Digital Display - Operating Mode ...................................................................................9
4.1.2. Menu Option - LC output..............................................................................................10
4.1.3. Menu Option - LC Config .............................................................................................11
4.1.4. Menu Option - Analogue input .....................................................................................11
4.1.5. Menu Option –Trigger mode.......................................................................................12
4.1.6. Menu Option –Wheel lock...........................................................................................12
4.1.7. Menu Option –Brightness............................................................................................13
4.1.8. Menu Option –Disp.Timeout .......................................................................................13
4.2. Software Operation................................................................................................13
4.2.1. Device Connection.......................................................................................................13
4.2.2. Normal Operation.........................................................................................................14
4.2.3. Sequence.....................................................................................................................14
4.2.4. Sweeping Mode ...........................................................................................................15
Chapter 5 Connector Pinout Details..........................................................................................16
5.1. Power Connector...................................................................................................16
5.1.1. Pin Identification...........................................................................................................16
Chapter 6 Preventive Maintenance............................................................................................17
6.1. Cleaning.................................................................................................................17
Chapter 7 Mechanical Drawings................................................................................................18
Chapter 8 Specifications & Accessories ..................................................................................19
8.1. Specifications........................................................................................................19
8.2. Power Supplies & Cables......................................................................................19

K-Cube™Liquid Crystal Controller
Chapter 9 Regulatory ..................................................................................................................20
9.1. Declarations Of Conformity ..................................................................................20
9.1.1. For Customers in Europe.............................................................................................20
9.1.2. For Customers in the USA...........................................................................................20
9.2. CE Certificate.........................................................................................................21
Chapter 10 Thorlabs Worldwide Contacts..................................................................................22

K-Cube™Liquid Crystal Controller Chapter 1: Safety
Rev A, September 11, 2020 Page 1
Chapter 1 Safety
1.1. Safety Information
For the continuing safety of the operators of this equipment, and the protection of the equipment
itself, the operator should take note of the Warnings, Cautions, and Notes throughout this
handbook and, where visible, on the product itself. The following safety symbols may be used
throughout the handbook and on the equipment itself.
Warning: Risk of Electrical Shock
Given when there is a risk of injury from electrical shock
CAUTION
Caution is given when there is a possibility of damage to the product.
WARNING
Given when there is a risk of injury to users.
1.2. General Warnings
WARNING
If this equipment is used in a manner not specified by the manufacturer, the protection provided by
the equipment maybe impaired. In particular, excessive moisture may impair operation. In any
installation that uses the KLC101 it is the user’s responsibility to ensure adequate insulation and
precautions are taken to avoid shock risk.Spillage of fluid, such as sample solutions, should be
avoided. If spillage does occur, clean up immediately using absorbant tissue. Do not allow spilled
fluid to enter the internal mechanism.

K-Cube™Liquid Crystal Controller Chapter 2: Overview and Setup
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Chapter 2 Overview and Setup
2.1. Introduction
The K-Cube Liquid Crystal Controller (KLC101) is a compact single channel controller/driver for easy manual
and automatic control of all Thorlabs Liquid Crystal Variable Retarders and Liquid Crystal Cells with the
exception of the LCC2415. The KLC101 produces a square wave output, the frequency of which is adjustable
from 500 Hz to 10 kHz, with an amplitude that can be varied from 0 to ± 25 Vrms. Both the output amplitude
and frequency can be set via the front panel controls, the USB interface, and the external input.
Figure 1 K-Cube Liquid Crystal Controller (KLC101)
This unit features two selectable set points, Preset V1 and Preset V2. The output amplitude and frequency of
both set points are controlled by the user and produce a square wave that is plus/minus the set point. For
example, if the user sets Preset V1 to 15.000 V, the output would be a ±15.000 V, 2 kHz square wave (see
Figure 2).

K-Cube™Liquid Crystal Controller Chapter 2: Overview and Setup
Rev A, September 11, 2020 Page 3
Figure 2 A 2 kHz Square Wave Output
The user can also select a modulated output with a frequency range of 0.1 to 150 Hz. The first cycle will be
equal to Voltage 1 and the second cycle will be equal to Voltage 2 (see Figure 3).
Figure 3 A 1 kHz Square Wave Output with 100 Hz Switching
The KLC101 will automatically detect and correct any DC offset in real time to within ±10 mV. This feature
increases the life of the liquid crystal device.
For convenience, the footprint of this unit has been kept to a minimum with measurements of 60 mm x 60 mm
x 47 mm (2.36ʺx 2.36ʺx 1.85ʺ) and with the facility to directly mount to the optical table, close to the device
under control. Table top operation also allows minimal drive cable lengths for easier cable management. All
manual controls are located on the top face of the unit –convenient when manually adjusting Liquid Voltage or
Frequency using the digitally encoded adjustment pot and easy to read voltage display (with brightness
adjustment).

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2.2. Power Options
For power, a compact two-way power supply unit (TPS002) is available from Thorlabs allowing up to 2 K-Cube
Liquid Crystal Controllers to be powered from a single outlet. This power supply unit is also designed to take up
minimal space and can be mounted to the optical table in close proximity to the driver units, connected via short
power leads.
As a further level of convenience when using the K-Cube Controllers, Thorlabs also offers 3-channel and 6-
channel K-Cube Controller Hubs (KCH301 and KCH601). These products have been designed specifically with
multiple K-Cube operation in mind in order to simplify issues such as cable management, power supply routing,
multiple USB device communications, and different optical table mounting scenarios.
The K-Cube Controller Hub comprises a slim base-plate type carrier with electrical connections located on the
upper surface to accept the K-Cubes.
Internally the Controller Hub contains a fully compliant USB 2.0 hub circuit to provide communications for all K-
Cubes –a single USB connection to the Controller Hub is all that is required for PC control. The Controller Hub
also provides power distribution for the K-Cubes, requiring only a single power connection.
2.3. PC Software Overview
2.3.1. Introduction
The stand-alone software user interface of the KLC101 allows full control of all settings and operating modes,
enabling complete ‘out-of-box’ operation with a single KLC101 unit. The stand-alone KLC101 software also
provides full functionality support of a single KLC101 as well as quick generation of sequence operation and a
sweeping mode. The stand-alone software package comes with a SDK that supports C++, Labview, and Python.
Please refer to the help file of the software package for more details.
The stand-alone software GUI is available on www.thorlabs.com.
2.3.2. Software Upgrades
Thorlabs operates on a policy of continuous product development and may issue software upgrades as
necessary.

K-Cube™Liquid Crystal Controller Chapter 3: Getting Started
Rev A, September 11, 2020 Page 5
Chapter 3 Getting Started
3.1. Install The Software
Caution
Some PCs may have been configured to restrict the users ability to load software and on these systems,
the software may not install/run. If you are in any doubt about your rights to install/run software, please
consult your system administrator before attempting to install.
If you experience any problems when installing software, contact Thorlabs Technical Support.
Note
This section is applicable only if the K-Cube is to be used with a PC. If your application consists only of local
operation via the K-Cube front face, proceed to Chapter 4.
When operating via a PC, direct user interaction with the liquid crystal controller is accomplished through
intuitive graphical user interface panels (GUIs), which expose all key operating parameters and modes. The user
can select multiple panel views displaying different information about a particular hardware unit. The multitasking
architecture ensures that the graphical control panels always remain live, showing all current hardware activity.
DO NOT CONNECT THE CONTROLLER TO YOUR PC YET
1) Go to Services/Downloads at www.thorlabs.com and download the software.
2) Run the .exe file and follow the on-screen instructions.
3.2. Mechanical Installation
Warning
The safety of any system incorporating this equipment is the responsibility of the person performing the
installation.
3.2.1. Environmental Conditions
Warning
Operation outside the following environmental limits may adversely affect operator safety.
Location:
Indoor use only
Maximum altitude:
2000 m
Temperature range:
10 to 40 °C
Maximum humidity:
Less than 80% RH (non-condensing) at 31 °C
To ensure reliable operation the unit should not be exposed to corrosive agents, excessive moisture, heat, or
dust.
If the unit has been stored at a low temperature or in an environment of high humidity, it must be allowed to
reach ambient conditions before being powered up.
3.2.2. Mounting Options
The K-Cube liquid crystal controller is shipped with a baseplate for use when fitting the unit to a breadboard,
optical table, or similar surface.
For multiple cube systems, 3-channel and 6-channel K-Cube Controller Hubs (KCH301 and KCH601) are also
available (see Section 2.2. for more details). Full instructions on the fitting and use of the controller hub are
contained in the handbook available at www.thorlabs.com.
Caution
When sitting the unit, it should be positioned so as not to impede the operation of the control panel
buttons.
Ensure that proper airflow is maintained to the rear of the unit.

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3.2.3. Using the Baseplate
The baseplate must be bolted to the worksurface before the K-Cube is fitted, as shown below. The K-cube
is then placed on two dowels in the baseplate and secured by two clips.
Figure 4 Using The Baseplate
3.3. Electrical Installation
3.3.1. Rear Panel
Figure 5 Rear Panel Connections
MOD IN (SMA Female Connector) - external analog signal input, 0~+5 V DC;
AUX (8 Position Circular Connector) - Reserved for future use
OUTPUT (BNC Female Connector) - controller voltage output to driver Liquid Crystal Retarders, 0~+/-25 V
RMS.
3.3.2. Supply Voltage and Current Requirements
Supply
Minimum
Maximum
Max Operating
Current
+5V
+4.9V
+5.1V
350 mA
+15V
+14.5V
+15.5V
220 mA
-15V
-14.5V
-15.5V
50 mA

K-Cube™Liquid Crystal Controller Chapter 3: Getting Started
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3.3.3. Front Panel
Warning
The unit must be connected only to a DC supply as detailed in Section 3.3. Connection to a supply of a
different rating may cause damage to the unit and could result in injury to the operator.
Caution
Ensure the power switch on the front panel of the unit is switched off before connecting power to the K-
Cube. Always power up the K-Cube unit by its ON switch. DO NOT connect the K-Cube unit to a 'live'
external power supply. Doing so (i.e. “hot plugging”) carries the risk of PERMANENT damage to the unit.
Similarly, to power down the unit, turn the power switch off before disconnecting the power supply.
Figure 6 Front Panel
POWER - Eight pin connector for connecting the unit to a regulated DC power supply of the rating detailed in
Section 3.3.2.
USB - USB port for system communications..
Note
The USB cable length should be no more than 3 meters unless a powered USB hub is being used.
ON - Power ON/Standby switch.
TRIG 1 and TRIG 2 - SMA connectors for use with external trigger input and output signals (5 V TTL levels).
The function is set to trigger IN or OUT via the settings panel.
3.3.4. Connecting to a Power Supply
Warning
The unit must be connected only to a DC supply as detailed in Section 3.3. Connection to a supply of a
different rating may cause damage to the unit and could result in injury to the operator.
Caution
Ensure the power switch on the front panel of the unit is switched off before connecting power to the K-
Cube. Always power up the K-Cube unit by its ON switch. DO NOT connect the K-Cube unit to a 'live'
external power supply. Doing so (i.e. “hot plugging”) carries the risk of PERMANENT damage to the unit.
Similarly, to power down the unit, turn the power switch off before disconnecting the power supply.
1) Using the front panel connector as shown above, connect the unit to a regulated DC power supply of the
rating detailed in Section 3.3.
2) Switch on the Power Supply unit, then switch on the KLC101.
3) The version number of the embedded software is displayed for a few seconds.

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Thorlabs offers a compact, two-way power supply unit (TPS002), allowing up to two K-Cubes to be
powered from a single outlet. However, if an external supply is to be used, see Section 5.1.1 for power
supply connector pin out details.
Caution
If an external power supply is used, ensure that the 3 voltage supplies are turned on and off
simultaneously. Applying the voltage supplies with a large (more than 1 second) time delay between
them can result in the K-Cube showing an incorrect reading.
3.3.5. Powering Down The Unit
Warning
Always use the front panel ON switch to power down the unit. When in the ON position, the unit is fully
powered up. When the switch is turned to the Standby position, the unit initiates a controlled power
down sequence, saving all user adjustable parameters to non-volatile memory before turning off the
power. For the first few seconds, the shutdown can be cancelled by turning the switch on again, in which
case the unit will save the parameters but will remain powered up. In a powered down (Standby) state,
the logic circuits are powered off and the unit will draw only a small quiescent current.
3.4. Connect The Hardware
1) Perform the mechanical installation as detailed in Section 3.2.
2) Install the software.
Caution
During items (3) to (6) the instructions should be followed strictly in the order stated. Problems
may occur if the process is not performed in the correct sequence.
3) Connect the Controller unit to your PC.
(Note. The USB cable should be no more than 3 meters in length. Communication lengths in excess of
3 metres can be achieved by using a powered USB hub).
Caution
During item (4) ensure the power supply unit is isolated from the mains before connecting to
the K-Cube unit. Always power up the K-Cube unit by connecting its power supply to the mains.
DO NOT connect the K-Cube unit to a 'live' external power supply. Doing so (i.e. “hot plugging”)
carries the risk of PERMANENT damage to the unit. Similarly, to power down the unit,
disconnect the power suply from the mains before disconnecting the K-Cube unit.
4) Connect the Liquid Crystal Retarders to the Controller unit - see Section 3.3.1..
5) Connect the Controller unit to the power supply - see Section 3.3.2..
6) Connect the PSU to the main supply.
7) Switch ‘ON’ the unit using the switch on the front panel.
The unit takes about 5 seconds from power application until warm up is finished, during which time the
software revision is displayed. WindowsTM should detect the new hardware. Wait while WindowsTM installs
the drivers for the new hardware.
8) The unit starts up with the output disabled. This must be enabled before any other settings can be
adjusted - see Section 4.1.2..
9) LCD screen displays the start menu as shown below:
Thorlabs KLC101
SwRev 10001

K-Cube™Liquid Crystal Controller Chapter 4: Standalone Operation
Rev A, September 11, 2020 Page 9
Chapter 4 Standalone Operation
4.1. Control Panel
Operating Elements
Scrolling Wheel - Used to make menu selections and to choose voltage and frequency values with
either forward or reverse scrolling - see Section 4.1.3.
Digital Display - The display shows the menu options and settings, accessed via the menu button - see
Section 4.1.1. When the Ident button on the associated GUI panel is clicked, the display will flash for a
short period.
MENU - Used to access the settings menu - see Section 4.1.1.
4.1.1. Digital Display - Operating Mode
During normal operation, the top line of the digital display shows the current drive voltage applied. The
bottom line shows various icons which indicate the operating state of the device, i.e. the feedback loop
mode (currently, only open-loop mode is available; closed-loop mode will be added in a future version of
the firmware), the unlocked symbol to show the output is enabled (see Section 4.1.2.), the analog input
mode (see Section 4.1.4.), and the output frequency (see Section 4.1.3.).
Settings Menu
Press the MENU button to enter the main menu.
Scroll the wheel to get access to more options.
Enable/disable the drive output - see Section 4.1.2.
Set the output voltage and frequency - see Section 4.1.3.
Set the analogue input source - see Section 4.1.4.
Output inactive
N ----Hz
open loop
Wheel
locked/unlock
N: Normal
S: Analog IN
:Switching
Output
Frequency
Output inactive
N ----Hz
Menu options
Use wheel
Menu options
2 LC config
Menu options
1 LC output
Menu options
3 Analogue input

K-Cube™Liquid Crystal Controller Chapter 4: Standalone Operation
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Switching enabled
to change
Set the Trigger input/output mode - see Section 4.1.5.
Set wheel adjust lock or unlock - see Section 4.1.6.
Set the display brightness - see Section 4.1.7.
Set the display timeout period - see Section 4.1.8.
4.1.2. Menu Option - LC output
This mode is used to enable or disable the drive output.
Press the MENU button, then use the wheel to scroll through the menu options.
Press the MENU button to enter the “1 LC output”option.
This screen is used to enable/disable the drive output voltage.
Scroll down for more options.
Enable the PresetV1 output. Use the wheel to scroll to the next
screen. Press the MENU button to store the selection
and return to the operating screen.
Enable the switching mode to cycling output
between PresetV1 and PresetV2.
PresetV2
1.000V
PresetV1
1.000V
Menu options
4 Trigger mode
Menu options
5 Wheel lock
Menu options
6 Brightness
Menu options
7 Disp.Timeout
Output inactive
N ----Hz
Menu options
1 LC output
Menu options
Use wheel
Output disabled
to change
PresetV1 enabled
to change
PresetV2 enabled
to change
Switching Mode
20.0Hz

K-Cube™Liquid Crystal Controller Chapter 4: Standalone Operation
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4.1.3. Menu Option - LC Config
When using the wheel to set the output Voltage and Frequency, there are three speed modes to quickly get
the desired voltage. When the user moves the scroll wheel quickly, the value will increase or decrease by 0.1;
when scrolling the wheel at medium speed, the value will increase or decrease by 0.01; when scrolling the
wheel at slow speed, the value will increase or decrease by 0.001.
Use wheel to scroll to the “2 LC config” menu.
Press MENU button to enter the 2 LC config option.
This menu is used to configure the output voltage or frequency.
Set the voltage of PresetV1 and use the wheel to change the
voltage value. Press the MENU button to store the
selection and return.
Set the frequency of PresetV1 and use the wheel to change
the freqency value. Press the MENU button to store
the selection and return.
Set the voltage of PresetV2 and use the wheel to change the
voltage value. Press the MENU button to store the
selection and return.
Set the frequency of PresetV2 and use the wheel to change
the freqency value. Press the MENU button to store
the selection and return.
Set the frequency of Switching and use the wheel to change
the freqency value. Press the MENU button to store
the selection and return.
4.1.4. Menu Option - Analogue input
When the analogue input is on, the output voltage of the controller is set by the external input signal of the
“MOD IN” port. The 0~5.0 V DC external input corresponds to the output voltage of 0 to ±25 Vrms.
Press the MENU button then use the wheel to scroll
to option 3 to set the Analogue input source. Press the MENU button to enter.
Use the wheel to set the Analogue input to off.
Press the MENU button to store the selection and return.
Use the wheel to set the Analogue input to on.
Press the MENU button to store the selection and return.
Set PresetV1
to change
Set Frequency1
to change
Set Frequency2
to change
Menu options
Use wheel
Menu options
2 LC config
Set PresetV2
to change
Set Volt1:1.000V
to change
Set Volt2:2.000V
to change
SetFrq1 :2000Hz
to change
SetFrq2:2000Hz
to change
Menu options
3 Analogue input
Anlg Input off
to change
Anlg Input on
to change
PresetV1 0.020V
S 2000Hz
Set Sw Frequency
to change
SetSwFrq:20.0Hz
to change
Output inactive
N ----Hz

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4.1.5. Menu Option –Trigger Mode
The K-Cube liquid crystal controller has two bidirectional trigger ports (TRIG1 and TRIG2) that can be used to
read an external logic signal or output a logic level to control external equipment. Electrically, the ports output
5 V logic signals and are designed to be driven from a 5 V logic.
When the port is used on input mode, the logic levels are TTL compatible, i.e. a voltage level less than 0.8 V
will be recognized as a logic LOW and a voltage level greater than 2.4 V will be recognized as a logic HIGH.
The input contains a weak pull-up, so the state of the input with nothing connected will default to a logic HIGH.
When the input signal is at a high level, the output voltage will select PresetV2, otherwise it will select PresetV1.
When the port is used as an output it provides a push-pull drive of 5 V, with the maximum current limited to
approximately 8 mA. The current limit prevents damage when the output is accidentally shorted to ground or
driven to the opposite logic state by external circuitry. When “Switching mode” is enabled, the Trig Port will
output the Switching frequency level. A high level indicates current output PresetV2, while a low level indicates
current output PresetV1.
Caution
Do not drive the TRIG ports from any voltage source that can produce an output in excess of
the normal 0 to 5 V logic level range. In any case the voltage at the TRIG ports must be limited
to -0.25 to +5.25 V.
Press the MENU button then use the wheel to scroll
to 4 Trigger Mode to set the Trigger state. Press the MENU button to enter.
Use the wheel to set both Trig 1 and Trig 2 as output.
Press the MENU button to store the setting and return.
Use the wheel to set Trig 1 as input and Trig 2 as output.
Press the MENU button to store the setting and return.
Use the wheel to set Trig 1 as output and Trig 2 as input.
Press the MENU button to store the setting and return.
4.1.6. Menu Option –Wheel lock
Press the MENU button then use the wheel to scroll to option 5 to set the Wheel status. When the Wheel is
locked, the user can not change the output voltage value in the start menu directly. In certain applications, it
may be advantageous to disable the wheel to remove the possibility of any unwanted disturbances due to
accidental movement of the wheel.
Press the MENU button then use the wheel to scroll
to 5 Wheel Lock. Press the MENU button to enter.
Use the wheel to select the wheel state.
Press the MENU button to store the setting and return.
Menu options
4 Trigger mode
Trig 1-OUT 2-OUT
to change
Trig 1-IN 2-OUT
to change
Trig 1-OUT 2-IN
to change
TRIG1 In Mode
N ----Hz
TRIG2 In Mode
N ----Hz
Menu options
5 Wheel lock
Wheel unlocked
to change
Wheel locked
to change
Output inactive
N ----Hz
Output inactive
N ----Hz

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4.1.7. Menu Option –Brightness
For certain applications, it may be necessary to adjust the brightness of the LED display. The brightness is set
as a value from 0 (Off) to 100 (brightest). The display can be turned off completely by entering a setting of zero;
however, pressing the MENU button on the top panel will temporarily illuminate the display at its lowest
brightness setting to allow adjustments. When the display returns to its default operating display mode, it will
turn off again.
Press the MENU button then use the wheel to scroll to 6 Brightness.
Press the MENU button to enter.
Use the wheel to change the brightness value.
Press the MENU button to store the setting and return.
4.1.8. Menu Option –Disp.Timeout
'Burn In' of the display can occur if it remains static for a long time. To prevent this, the display is automatically
dimmed after a specified time interval.
Press the MENU button, then use the wheel to scroll to 7 Disp. Timeout.
The adjustment is done in steps of 1 minute if the timeout is between
1 and 10 minutes; 10 minute steps between 10 minutes and 1 hour;
and 30 minute steps above 1 hour, up to a maximum of 480 minutes.
After 480 minutes there is an option for Never.
4.2. Software Operation
This chapter only covers the operation of the stand-alone software GUI.
4.2.1. Device Connection
After software installation, connect the KLC101 to the PC with a USB3.0 cable and power on the device. Once
powered on, start the software. The software should recognize and connect to the device automatically. If not,
click the connect button and manually select and connect devices from the pop-up window.
Figure 7 Click the Connect Button to Select and Connect KLC101
Menu options
6 Brightness
Brightness - 50
to change
Menu options
7 Disp.Timeout
After 10 min
to change

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4.2.2. Normal Operation
The software features a master switch to swtich on/off the main output of the KLC101 and a wheel lock swtich
to enable/disable the wheel on the KLC101 front panel.
In normal operation, the GUI allows easy switching among the output mode as shown below:
Preset 1: in which the KLC101 outputs a signal according to the value set in Voltage 1 and Frequency 1.
Preset 2: in which the KLC101 outputs a signal according to the value set in Voltage 2 and Frequency 2.
Switching: in which the KLC101 toggles its output between Preset 1 and Preset 2. The toggle frequency is also
adjustable in Switching Mode.
MOD IN: in which the output voltage of the controller is set by the external input signal of the “MOD IN” port.
The 0~5.0 V DC external input corresponds to the output voltage of 0 to ±25 Vrms.
TRIG1 Input: in which the TRIG1 port on the KLC101 is set to be the input and TRIG2 port is set to be the
output.
TRIG2 Input: in which the TRIG1 port on the KLC101 is set to be the input and TRIG2 port is set to be the
output.
For detailed information on trigger operation, please refer to section 4.1.5 Menu Option –Trigger Mode.
Figure 8 Stand-Alone GUI Main Screen
4.2.3. Sequence
The software GUI also provides a tool to generate an operation sequence for a single KLC101 unit. In the
sequence, the output voltage amplitude, frequency, and duration of each step are all editable. The functions of
the buttons are listed below:
: Add one step into the sequence table.
: Delete the selected step from the sequence table.
: Delete the entire sequence table.
: Play the sequence.
: Quickly generates a linear sequence table by setting the start and end point as well as the number of
steps in between.

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Rev A, September 11, 2020 Page 15
The entire sequence can be set to just play once (infinite) or to play by a number of cycles.
Figure 9 Generating Sequence
4.2.4. Sweeping Mode
The software GUI also has a sweeping mode in which users can set a start voltage, an end voltage, step size
and step duration. The KLC101 will scan from the start to the end point after the sweep is started from the GUI.
Figure 10 Sweeping Mode