User Manual LucidControl AO4 USB Analog Output Module
Contents
1. Call Get LucidioCtrl d COMx c Channel goutAnMode LucidIloCtrl Command Line Tool Example Set operation mode of output channel 0 to Standard Mode and make the setting persistent LucidioCtrl dCOM4 c0 soutAnMode standard p ENTER Read the operation mode of input channel 0 LucidiIoCtrl dCOM4 c0 goutAnMode ENTER gt outAnMode standard 3 4 3 outAnRefreshInterval This IO Configuration Parameter configures the output refresh interval Tinterval Parameter outAnRefreshInterval Access Read Write Address 0x1111 Tinterval IN US Micro seconds 1 ms lt Tinterval lt 100 ms Values Default Value Parameter Type 4 bytes unsigned LucidloCtri Command Line Tool Page 19 of 23 LucidControl AO4 User Manual Parameter Name outAnRefreshinterval Parameter Values 2015 03 02 Call Set LucidIoCtrl d COMx soutAnRefreshInterval Time c Channel p default Call Get LucidIoCtrl d COMx LucidloCtrl Command Line Tool Example Set Tinterval Of output channel 0 to 20 ms and make the setting persistent LucidiIoCtrl dCOM4 c0 soutAnRefreshInterval 20000 p Read Tinterval Parameter of input channel 0 LucidioCtrl dCOoM4 c0 goutAnRefreshInteral outAnRefreshInterval 20000 gt c Channel 3 4 4 outAnRefreshTime This IO Configuration Parameter configures the output refresh time Trefresh Pa2. Module Type Type Number Positive Outputs Symmetrical Outputs Tab 1 Output Voltage Range LCTR AO4 12 S 12 V 12 V Output Voltage Range Module Type Type Number Imin Imax Positive LCTR AO4 20M0 OA 20 mA Outputs LCTR AO4 20M4 4mA 20 mA Tab 2 Output Current Range 2 2 Interface and Interconnection 2 2 1 USB Connection LucidControl USB modules are connected to the computer by using a standard USB cable which must not extend a length of 5 m They are bus powered which means that the host computer supplies the module with power LucidControl AO4 module is rated with a maximum current of 250 mA Note Supplying USB devices with power is not critical using a desktop computer or notebooks but it must be considered that the total power of one USB port is limited to 500 mA Note The USB ports of the Raspberry Pi are limited to a current of 100 mA This must be taken into account when the outputs of the AO4 module are used for sourcing loads In the case that the module interfaces high resistive loads up to two devices can be connected to the Raspberry Pi without the necessity of an active USB Hub Note Using an active USB Hub with its own power supply allows the connection of additional devices in the case that the host is not able to supply them Page 3 of 23 LucidControl AO4 User Manual 2015 03 02 2 2 2 IO Connection Fig 2 shows the interconnection
3. LucidControl Analog Output USB Module with 4 channels 0 10 V LucidControl Analog Output USB Module with 4 channels 12 V LucidControl Analog Output USB Module with 4 channels 0 20 mA LucidControl Analog Input USB Module with 4 channels 4 20 mA LCTR AO4 05 LCTR AO4 10 LCTR AO4 12 S LCTR AO4 20M0 LCTR AO4 20M4 The following accessories are available Order Code Product LCTR AK1710 8 Plug In Terminal 8 way 1 5 mm wire Page 23 of 23
4. connected to the computer Note By default Linux cannot ensure that the same dev ttyACM device is assigned to the same module on restart But as long as only one module is connected to the computer it is ensured that it is accessible via dev ttyACMO This problem can be solved by the LucidloCtrl command line tool which can create static devices always pointing to a specific module Moreover the device can be given useful names e g dev digitalloKitchen Page 6 of 23 LucidControl AO4 User Manual 2015 03 02 2 3 3 Get command line LucidloCtrl LucidIoCtrl command line tool can be downloaded from our website www lucid control com downloads This page provides the command line tool LucidloCtrl for different architectures After downloading the program can be stored in a folder of choice Please see the section 3 of the general LucidControl User Manual for more information about this helpful tool 2 3 4 Ready to Start After the module was installed successfully if it was necessary at all the green Power LED is switched on signaling that the module is ready for use Since the module was preconfigured for standard output mode it can be used without further configuration The following examples demonstrate the functionality of the module by using the LucidIoCtrl command line tool The following examples demonstrate the functionality of the module by using the LucidIoCtrl command line tool Windows Examples For all examples i
5. 0 Parameter Type 4 bytes signed LucidIoCtrl Command Line Tool 100 000 000 pV 100 000 000 pV Parameter Name outAnValue Parameter Values or 1 000 000 pA 1 000 000 pA Call Set LucidIoCtrl d COMx c Channel soutAnValue Value p default Call Get LucidioCtrl d COMx c Channel goutAnValue LucidloCtrl Command Line Tool Example Set output voltage of channel 0 to 5 V and make the setting persistent LucidiIoCtrl dCOM4 c0 soutAnValue 5000000 p ENTER Read output voltage of channel 0 value is 5 V LucidiIoCtrl dCOM4 c0 goutAnValue ENTER gt outAnValue 5000000 Page 18 of 23 LucidControl AO4 User Manual 2015 03 02 By using outAnValue an output value can be made persistent In this case the stored voltage or current level is restored after a restart of the module Note For normal operation it is recommended to use the functions Setlo see 0 and Getlo 3 3 3 in order to access the output channel value 3 4 2 outAnMode This IO Configuration Parameter configures the operation mode of the output Parameter outAnMode Access Read Write Address 0x1100 Output Mode Mode inactive standard Values Default Value standard Parameter Type 1 byte unsigned LucidIoCtri Command Line Tool Parameter Name outAnMode Parameter Values inactive standard Call Set pg tay c Channel soutAnMode Mode p
6. 000 pA 4 Bytes 0x23 1A 1A Tab 6 GetloGroup Request Response Frame In case of successful execution the command returns the read values of the channels specified in the Channel Mask Status LEN Data Field Status Length Value s In the case of an error the command returns Execution Status Code documented in section 4 4 of the LucidControl User Manual Example of GetloGroup Request The following request frame reads outputs 0 and 1 It returns the output voltages as signed 4 byte result Opcode P1 P2 Length 0x48 0x03 0Ox1D 0x00 Channel Mask P1 0x01 OR 0x02 0x03 Page 17 of 23 LucidControl AO4 User Manual 2015 03 02 Response Frame Output 0 1 25 V output 1 2 50 V Values in Data Field are in ascending channel order Header Field Data Field Status LEN Bytes Value 0 Value 1 1 2 5 6 0x12 0x13 0x25 0x25 3 4 Parameters LucidControl IO modules can be configured by a set of System Configuration Parameters ans IO Configuration Parameters The Parameters are accessible via the SetParam and GetParam command which are described in sections 4 3 5 and 4 3 6 of the LucidControl User Manual 3 4 1 outAnValue This IO Configuration Parameter represents the voltage or current value of the analog output Parameter outAnValue Access Read Write Address 0x1000 Values Voltage or current in 1 uV resolution Default Value
7. 8 0x09 Accessing channel 1 and 2 Value 0x02 OR 0x04 0x06 Value Type Supported Value Types Value Type Value Range Signed Voltage 100 000 000 uV Resolution 1 uV 100 000 000 uV 0x1D 100 V 100 V Signed Voltage 30 000 mV Resolution 1 mV 30 000 mV 0x10 30 V 30 V Signed Current 1 000 000 pA Resolution 1A 1 000 000 pA 0x23 1 A 1A Length of the Values in the Data Field One Value for each channel One or more values to set in ascending channel order Tab 4 SetloGroup Request Response Frame Status Length Status 0 The command does not return any data In the case of an error the command returns Execution Status Code documented in section 4 4 of the LucidControl User Manual Example of SetloGroup The following request frame sets outputs 0 to 1 25 V and output 1 to 2 5 V Page 13 of 23 LucidControl AO4 User Manual 2015 03 02 Request Frame Data Field Byte Value Output 0 Value Output 1 0 1 2 3 4 5 6 7 OxDO 0x12 0x13 0x00 OxAO 0x25 0x26 0x00 Channel Mask for Param1 0x01 OR 0x02 0x03 Output Values in Data Field are sorted Channel 0 Channel 1 Response Frame Status Length 0x00 0x00 3 3 3 Getlo This command reads the voltage or current of the analog output Command Opcode LucidIoControl Command Line Tool Call tL LucidIoCtr1 d COMx c Channel tV r L ucidIoCt
8. LucidControl AO4 User Manual 2015 03 02 Page 1 of 23 LucidControl AO4 User Manual 2015 03 02 1 Introduction This document describes the functionality of the LucidControl AO4 USB module generating 4 analog voltages or currents controllable via Universal Serial Bus A basic description of the complete LucidControl product family can be found in the document LucidControl User Manual This document concentrates on the specific topics of the analog output module which is described here with all its details In order to set up the module in a fast way please see the LucidControl AO4 One Sheet Manual which provides all information necessary to start working with the module out of the box without reading lots of documentation 2 Hardware Fig 1 shows the sketch of the Analog Output AO4 module with 4 analog voltage or current outputs All LucidControl modules have two connectors one USB connector and an IO Connector which makes it easy to setup them While the upper USB connector is used for interconnection with the computer the lower IO Connector is used for inputs and outputs The IO Connector provides 8 terminals in total two for each output Fig 1 Digital Output Module Page 2 of 23 LucidControl AO4 User Manual 2015 03 02 2 1 Configurations LucidControl AO4 is available with the following output types Output Voltage Range Vin Vax LCTR AO4 5 OV 5V LCTR AO4 10 OV 10 V LCTR AO4 24 OV 24V
9. Outputs 2 2 2 3 Current Outputs The current output module shown in Fig 3 consists of 4 independent current sources as they are shown in Fig 6 The positive outputs are connected to the terminals 1 3 5 and 7 of the IO Connector The remaining terminals 2 4 6 8 are connected to ground Fig 6 Current Source Page 5 of 23 LucidControl AO4 User Manual 2015 03 02 2 3 Setup of Hard and Software Setting up LucidControl hardware is extremely easy 1 Ensure that no signal is applied to the IO Connector Connect LucidControl via USB with the computer 3 Applies for Microsoft windows only The system asks for an installation file This is not a driver but only an information file INF The file can be downloaded from our website www lucid control com downloads 4 That s all LucidControl switches the green power LED on and the module is ready for usage 2 3 1 Windows As mentioned the installation under Microsoft Windows requires the information file After finished installation the Windows Device Manager contains a new serial port COM The module can be accessed using this port Note Even if more than one module is connected to a computer Windows ensures that the same serial port number is assigned to the module s after restart 2 3 2 Linux Despite to Windows installation under Linux the module is usable immediately after connection without any additional steps Linux installs dev ttyACM devices for any module
10. alue Type Tab 3 Setlo Request Page 11 of 23 LucidControl AO4 User Manual 2015 03 02 Response Frame Status Length Status 0 The command does not return any data In the case of an error the command returns Execution Status Code documented in section 4 4 of the LucidControl User Manual 3 3 2 SetloGroup This command sets the voltage or current of a group of output channels of the same Value Type Command SetloGroup Access Opcode 0x42 LucidIoControl Command Line Tool Call tV LucidIoCtrl d COMx c Channels tV w Voltages LucidIoCtrl d COMx c Channels tC w Currents Channels Comma separated list of channels e g c0 2 3 Values Comma separated list of voltages or currents to set e g w1 25 2 5 7 5 LucidloCtrl Command Line Tool Example Set output channel 0 to 1 25 V output channel 2 to 2 50 V and output channel 3 to 7 50 LucidIoCtrl dCOM4 c0 2 3 tV w1 25 2 5 7 5 ENTER Set output channel 0 to 5 mA output channel 2 to 15 5 mA and output channel 3 to 20 LucidIoCtrl dCOM4 c0 2 3 tC w5 15 5 20 ENTER Request Frame P1 P2 Data Field Channel Mask Value Type Value s Page 12 of 23 LucidControl AO4 User Manual 2015 03 02 Description Channel Mask Specifies the output channels to access Channel Bit Position Channel Mask Values are bitwise or combined Examples Accessing channel 0 and 3 Value 0x01 OR 0x0
11. ch DAC 4 output voltages or currents are created in total Fig 7 illustrates the output processing in standard mode Each of the two DAC is responsible for the generation of Output Voltage two analog output signals Fig 7 Output Processing The processing of both DAC channels is operating in parallel the same way For simplicity only the processing of one DAC is shown in Fig 7 The lower diagram in Fig 7 shows the DAC output signals a higher for output 1 a lower voltage for output 2 The upper diagram depicts the timing sequence of the output multiplexing and refreshing algorithm for each DAC After the DAC set the updated voltage of output 1 and Tsetup has passed the output multiplexer applies the signals to the output circuit Tsetup is a guard time preventing to overwrite the stable voltage of the last refresh cycle The voltage is applied to the output circuit for the time Trefresh After refreshing has completed the DAC generates the updated signals of output 2 Output 2 is processed the same way as Output 1 was The refreshing algorithm repeats periodically after Tintervai has passed Even if Tsetup TRefresh and Tinterval Can be adjusted for each output channel independently this should only be taken into account if it is necessary since changing these parameters may have unexpected consequences like skipped output channels or high voltage ripple The relevant IO Configuration Parameters are outAnSetupTime se
12. e 3 4 5 outAnRefreshTime see 3 4 4 and outAnRefreshinterval see 3 4 3 At any time it is possible to restore the default values of changed parameters Page 9 of 23 LucidControl AO4 User Manual 2015 03 02 3 1 Operation Modes 3 1 1 Inactive Mode Setting an output to inactive mode disables processing of the output and sets the output voltage to minimum value e g 0 V Setting an output to Inactive Mode does not suspend the output processing and refreshing but forces the output voltage to minimum value 3 1 2 Standard Mode In standard mode the processing of the analog output is executed as described in section 3 3 2 Offset Compensation In some cases it is necessary to compensate an offset signal by adding a value to the output voltage or current The signed value of the IO Configuration Parameter outAnOffset see 3 4 6 is added to the output signal and allows an offset correction 3 3 Commands Accessing inputs and outputs is a very common task which is mostly identical for all LucidControl modules For this task output modules provide the commands Setlo for writing a single value and SetloGroup for writing a group of values of the same type The command Getlo supports reading of the state of a single output value while GetloGroup reads a group of output values of the same type For more comprehensive information covering reading and writing of inputs and outputs please see the sections 3 2 1 1 3 2 1 2 and 4 3 o
13. f the general LucidControl manual The following sections describe in detail the commands which are supported by the AO4 module 3 3 1 Setlo This command sets the output signal of one output channel Page 10 of 23 LucidControl AO4 User Manual 2015 03 02 Command Access Opcode LucidIoControl Command Line Tool LucidioCtrl d COMx c Channel tV w Voltage LucidiIoCtrl d COMx c Channel tC w Current Call tV Note When using the LucidIoCtrl command line tool the distinction between the Setlo and SetloGroup commands is not necessary since LucidIoCtrl command line tool handles this automatically LucidIoCtrl Command Line Tool Example Set output channel 0 to 2 540 V LucidIoCtrl dCOM4 c0 tV w2 540 ENTER Set output channel 0 to 10 mA LucidIoCtrl dCOM4 c0 tC w10 ENTER Request Frame OPC P1 P2 LEN Data Field 0x40 Channel Value Type Length Value Value Description Channel Number of input or output channel Range 0 3 Value Type Value Type Supported Value Types Value Type Value Range Signed Voltage Resolution 1 uV Ox1D 100 000 000 pV 100 000 000 uV 100 V 100 V Signed Voltage Resolution 1 mV Ox1C 30 000 mV 30 000 mV 30 V 30 V Signed Current Resolution 1A 0x23 1 000 000 pA 1 000 000 pA CIASTA Length of the Values in the Data Field Values accordingly to the V
14. nel p default Page 20 of 23 LucidControl AO4 User Manual 2015 03 02 Call Get LucidioCtrl d COMx c Channel goutAnSetupTime LucidIloCtrl Command Line Tool Example Set Tsetup Of output channel 0 to 1 5 ms and make the setting persistent LucidiIoCtrl dCOM4 c0 soutAnSetupTime 1500 p ENTER Read Tsetup parameter of input channel 0 LucidioCtrl dCOM4 c0 goutAnSetupTime ENTER gt outAnSetupTime 1500 3 4 6 outAnOffset This IO Configuration Parameter configures the output offset compensation value which is described in section 3 2 Parameter outAnOffset Read Write Address 0x1120 Offset Compensation in 1 mV steps 3 V 3 V 3 000 3 000 Values Default Value 0 Parameter Type 2 bytes signed LucidIoCtrl Command Line Tool Parameter Name outAnOffset Parameter Values Voltage 1 mV Call Set meine e ae c Channel soutAnOffset Value p Call Get LucidioCtrl d COMx c Channel goutAnOffset LucidIoCtrl Command Line Tool Example Set output offset compensation value of output channel 0 to 5 mV and make the setting persistent LucidiIoCtrl dCoM4 c0 soutAnoOffset 5 p ENTER Read Offset Compensation value LucidioCtrl dCOM4 c0 goutAnOffset ENTER gt outAnOffset 5 Page 21 of 23 LucidControl AO4 User Manual 2015 03 02 4 Specification Parameter Condition Outputs No
15. of Output Channels Output Electrical Characteristics Output Function Digital to Analog Conversion Resolution 12 bit Accuracy typ 0 25 of full scale range Max Output Error 5 LSB Max Output Current per Channel Tchmax 40 mA Max Output Current of Device TrotalMax 160 mA Output Timing Characteristic Value Update interval Tupdate typ 10 ms Setup Time for stable output Tstable typ 1 ms DAC Conversion Time Tconv typ 1 ms ule Communication USB 2 0 Full Speed CDC Profil ule Electrical Characteristics Power Supply USB Bus Powered with 5V No additional Power Supply needed Maximum Rated Supply Current 250 mA ule Environment Temperature Storage 20 C 70 C Operation 0 C 55 C Humidity lt 85 RH non condensing ule Housing Dimensions LxWxH 90 x 54 x 62 mm Weight in total 120 g Assembly Rail Mount EN 50022 TS35 Protection Class DIN 40050 IP20 ule Indicators e Operation and Error Indicator e Communication Indicator Software Supported Operating Systems Windows XP Windows Vista Windows 7 Ubuntu Debian Raspbian Page 22 of 23 LucidControl AO4 User Manual 2015 03 02 Application Programming Interface Console Terminal Application API Java and Python 5 Order Information and Accessories Order Code Product LucidControl Analog Output USB Module with 4 channels 0 5 V
16. of the voltage output module in a typical application In this application the analog output voltages are sourcing LEDs The terminals 2 4 6 and 8 are internally connected to ground Fig 2 Voltage Output Module Connection Fig 3 shows the interconnection of the current output module The outputs are connected to current measurement devices The terminals 2 4 6 and 8 are internally connected to ground Fig 3 Current Output Module Connection The load current per channel must not exceed Ichmax The sum of all 4 output channels must not exceed Itotaimax Page 4 of 23 LucidControl AO4 User Manual 2015 03 02 2 2 2 1 4 Voltage Outputs The voltage output module shown in Fig 3 consists of 4 independent voltage sources as they are shown in Fig 4 The positive outputs are connected to the terminals 1 3 5 and 7 of the IO Connector The remaining terminals 2 4 6 8 are connected to ground Fig 4 Voltage Source 2 2 2 2 2 Floating Voltage Outputs All 4 voltage outputs share a common ground A floating output can be achieved by connecting the outputs as shown in Fig 5 In the picture two of the 4 independent voltage sources are connected in series Voltage output modules providing positive and negative voltages e g LCTR AO4 12 S are able to double their output voltage By connecting this module as shown in Fig 5 can create voltages in the range of 24V to 24V oQ Fig 5 Symmetrical Voltage
17. rameter outAnRefreshTime ENTER Access goutAnRefreshInterval ENTER Read Write Address 0x1113 Values TRefresh IN US micro seconds 0 1 ms lt Trefresh lt 10 ms Default Value 1ms LucidIoCtrl Command Line Tool Parameter Type 4 bytes unsigned Parameter Name outAnRefreshTime Parameter Values Time us Call Set LucidIoCtrl d COMx soutAnRefreshTim c Channel Value p default Call Get LucidIoCtrl d COMx LucidloCtrl Command Line Tool Example Set Trefresh Of output channel 0 to 5 ms and make the setting persistent c Channel LucidIoCtrl dCOM4 c0 soutAnRefreshTime 5000 p Read Trefresh parameter of input channel 0 gt LucidIoCtrl qdCOM4 c0 goutAnRefreshTime outAnRefreshTime 5000 3 4 5 outAnSetupTime This IO Configuration Parameter configures the output refresh setup time Tsetup Parameter outAnSetupTime ENT ENTER Access goutAnRefreshTime ER Read Write Address 0x1112 Values Tsetup in us micro seconds 0 1 ms lt Tsetup lt 10 ms Default Value 1ms LucidIoCtrl Command Line Tool Parameter Type 4 bytes unsigned Parameter Name outAnSetupTime Parameter Values Time us Call Set LucidIoCtrl d COMx soutAnSetupTime Value c Chan
18. ri d COMx c Channel tC r Return CHn VV n Output Channel VV Output Value Note When using the LucidIoCtrl command line tool the distinction between Getlo and GetloGroup commands is not necessary since the program handles this automatically LucidIoCtrl Command Line Tool Example Read voltage of output channel 0 LucidIoCtrl dCOM4 c0 tV r ENTER gt CH0 5 00000 Read current of output channel 0 LucidIoCtrl dCOM4 c0 tC r ENTER gt CH0 5 00000 Page 14 of 23 LucidControl AO4 User Manual 2015 03 02 Request Frame OPC P1 P2 LEN 0x46 Channel Value Type 0 Value Description Channel Number of input or output channel Range 0 3 Value Type Supported Value Types Value Type Value Range Signed Voltage 100 000 000 uV Resolution 1 uV 100 000 000 uV 0x1D 100 V 100 V Signed Voltage 30 000 mV Resolution 1 mV 30 000 mV 0x1C 30 V 30 V Signed Current 1 000 000 pA Resolution 1A 1 000 000 pA 0x23 1A 1A Tab 5 Getlo Request Response Frame In case of successful execution the command returns the value of the specified channel number Status LEN Data Field Status Length Value In the case of an error the command returns Execution Status Code documented in section 4 4 of the LucidControl User Manual 3 3 4 GetIloGroup This command reads the voltage or currents of a group of analog o
19. t is assumed that the module is connected to COM1 Set the values of all 4 voltage output channels Value of CHO 5 000 V CH1 2 500 V CH2 1 250 V CH3 0 625 V LucidIoCtrl dCOM1 tV c0 1 2 3 w5 000 2 500 1 250 0 625 ENTER Set the values of all 4 current output channels Value of CHO 5 000 mA CH1 2 500 mA CH2 1 250 mA CH3 0 625 mA LucidIoCtrl dCOM1 tC c0 1 2 3 w5 000 2 500 1 250 0 625 ENTER Linux Examples For all examples it is assumed that the module is connected to dev ttyACMO Set the values of all 4 output channels Value of CHO 5 000 V CH1 2 500 V CH2 1 250 V CH3 0 625 V LucidIoCtrl d dev ttyACMO tV c0 1 2 3 w5 000 2 500 1 250 0 625 ENTER Page 7 of 23 LucidControl AO4 User Manual 2015 03 02 Set the values of all 4 current output channels Value of CHO 5 000 mA CH1 2 500 mA CH2 1 250 mA CH3 0 625 mA LucidIoCtrl d dev ttyACMO tC c0 1 2 3 w5 000 2 500 1 250 0 625 ENTER Page 8 of 23 LucidControl AO4 User Manual 2015 03 02 3 Module Operation The LucidControl AO4 Analog Output Module generates 4 independent output voltage or current signals The Hardware of the AO4 module consists of 2 independent DAC Digital Analog Converter By Set MUX1 m Clear MUX1 Set MUX2 aaeeea Clear MUX2 oe Set MUX1 Clear MUX1 aco Set MUX2 wee Clear MUX2 Output Signal multiplexing ea
20. utputs of the same Value Type Page 15 of 23 LucidControl AO4 User Manual 2015 03 02 Command GetloGroup Access Opcode 0x48 LucidIoControl Command Line Tool Call tV Lucidioctrl d COMx c Channels tV r LucidiIoCtrl d COMx c Channels tC r Channels Comma separated list of channels e g c0 1 3 Return List of values sorted from lower to higher channels CHn VV n Input Channel VV Output Value LucidIoCtrl Command Line Tool Example Read output voltages of channel 0 1 and 3 LucidIoCtrl dCOM4 c0 1 3 tV r ENTER gt CH0 1 25000 CH1 2 50000 CH3 5 00000 Read output cuttents of channel 0 1 and 3 LucidIoCtrl dCOM4 c0 1 3 tC r ENTER gt CH0 1 25000 CH1 2 50000 CH3 5 00000 Request Frame P1 P2 Channel Mask Value Type Page 16 of 23 LucidControl AO4 User Manual 2015 03 02 Description Channel Mask Specifies the output channels to access Channel Bit Position Channel Mask Values are bitwise or combined Examples Accessing channel 0 and 3 Value 0x01 OR 0x08 0x09 Accessing channel 1 and 2 Value 0x02 OR 0x04 0x06 Supported Value Types Value Type Value Range Length Signed Voltage 100 000 000 uV Resolution 1 uV 100 000 000 uV 4 Bytes 0x1D 100 V 100 V Signed Voltage 30 000 mV Resolution 1 mV 30 000 mV 2 Bytes 0x1C 30 V 30 V Signed Current 1 000 000 pA Resolution 1A 1 000
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