L300 user manual - Mouser Electronics
Contents
1. 11 Press exit when finished 15 12 Pressing the start Key keypad 7 the following program will run Step 1 1A for 2 seconds Step 2 2A for 5 seconds Step3 3A for 10 seconds To stop the program Press the Stop key keypad 13 this program may be stored in memory by pressing the Store key then enter a location between 1 and 9 from the keypad or rotary dial Press OK to enter see 2 3 4 2 Creating a program to provide a constant Power Output A program using a sequence of constant power values steps with a time interval may me entered using the following procedure 1 Select POWER OUT press OK 2 The LCD will display STEP NJUMBER 1 NEW 3 3 Enter the number of power values in this example 3 power steps will be used Note from 1 to 11 power values may be entered Enter 3 from the keypad or rotary dial and then press OK The LCD will now display STEP 1 SET 0 0 NEW 50 4 Enter the first power value In this example 50 watts Enter 50 from the numeric keypad or the rotary dial press OK the LCD will now display STEP 1 TIME 1S NEW 30 5 Enter the time duration for the first power from 1 to 7200 seconds In this example 30 seconds enter 30 from the numeric keypad or rotary dial then press OK the LCD will now display STEP 2 SET 0 0 NEW 100 16 6 The second power to be entered is 100W Enter 100 from the numeric keypad or rotary dial Press OK The LCD will now display2. 36 0 360 0V 0 3 300mV 1 3 Features 1 LCD display with backlight 2 Numeric keypad 3 ImV resolution 4 Over current protection 5 Over power protection 6 Adjustable constant resistance constant current and constant power output 7 All values are set by a numeric keypad or rotary dial 8 Power shutdown function 9 PC software for monitoring output 10 Small sized and lightweight 11 Can be used in parallel connection 12 Programmable output 1 4 Dimensions and Structure 1 4 1 Dimensions Fig 1 EL 300 Programmable DC Electronic Load Dimensions 1 4 2 Structure 1 4 2 1 Front view Front panel consists of the LCD display numeric keypad and the rotary dial for entering current power or resistance values Please see the diagrams below ce i wado Raa Y Sagas as e Fig2 Front view of L300 DC electronic load 1 LCD display Au 0 000A 0 000V OF Vors WATTS 0 0W 0 000A IS PRESET Fig3 EL 300 electronic load LCD Display The upper half of the LCD display The current value Voltage value and output status ON OFF represent power source output status The lower half of the LCD display The output power value The current preset value Operating mode IS PS RS SW represents constant current constant power constant resistance and program output 2 Arrangement of the Keyboard When in the input state the keyboards enters the numeric value that is printed on the Keypads When in th
3. Fig 3 10 Main Interface of Electronic Load PC and Panel a Control State reser Power State e Power State of the Electronic Load These two lights may be on at the same time And it is possible that one of them is on or neither of them is on That the PC Self light is on means the PC is in the charge of the Electronic Load Conversely it is in charge of its panel That the Power State light is on means the power of the Electronic Load is on Conversely it is off Before exiting the run program the control of the Electronic Load must be reurned to the machine itself and it must confirmed that the power is off The functions of the seven buttons in the up are as follows Run Run the Program 25 Pause Stop Running COM Setting COM Port Set Program Setting Program Set Send Data Send Data Stop Send Stop Sending Data Close Stop Communication 3 3 Uninstall the System It will be OK to select Uninstall Elect from the system start menu Remember to close the system before uninstalling otherwise it will be no way to run the command 26 Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery amp Lifecycle Information Protek L300
4. is set you must enter it through the keypad every time you set a current power or resistance 20 2 3 7 7 Set up SAVE OPTION When you select the SAVE OPTION function the LCD will display as SAVE LPR DON T SAVE VOLT This function is convenient if you use the same settings day to day It saves the last Power Current or Resistance setting before the unit is shut off When the unit is power on the last setting before powering off will be displayed Users can changed this selection using the UP and DOWN keys or rotating the ROTARY dial and pressing the OK button Selecting SAVE I P R you save the last set up of current power and resistance Selecting DON T SAVE the last setting before powering off is not saved 2 3 7 8 EXIT function When the EXIT function is selected you will exit the Menu operation 21 Chapter 3 software Installation 3 1 Software Installation 3 1 1 Insert the monitoring CD into the CDROM drive The CD Drive will start automatically and the initial window will be displayed as shown in Fig 3 1 Programmable Power Supply Fig 3 1 The Installation Initial Interface 3 1 2 The Welcome Screen will display the message as shown in Fig 3 2 Press NEXT to continue Welcome Welcome to the PowerMS Setup program This program will install PowerMS on your computer It is strongly recommended that you exit all Windows programs before running this Setup program Cl
5. PC 2311 Cable j i e a 2a ha Ei 300 electronic load Fig 2 1 Connecting the electronic load to the PC 2 2 Function descriptions 2 2 1 Main functions 1 Set a constant current output 2 Set a constant power output 4 Set a constant resistance output 5 Store 10 sets of setup values in memory 6 Recall previously stored setups 7 Start Stop program 8 Switch ON OFF the electronic load output 2 2 2 Sub functions 1 Set maximum current 2 Set maximum power 3 Set up the programming 4 Set PC communication 5 Set up password 2 3 Function operation As stated above there are 8 main functions and 5 sub functions provided by the EL 300 electronic load the following is a description of the functions and sub functions and how to us them 2 3 1 I set setting a constant current value Setting a constant DC current output is the first main function of the L300 programmable DC electronic load The two methods to set a constant DC current input value is using the Numeric keyboard or the rotary button Please see the following chart for the operation procedure Procedure Operation details LCD display Step 1 Press I set SET CURR 0 00A NEW Step 2 Enter the password Or jump to step 4 if there is ENTER PASS WORD no keyboard pass word Step 3 Press the OK button the LCD will return to step ENTER PASS WORD 2 if you entered the wrong password Reenter the correct Pas
6. Programmable DC Electronic Load L300 user manual CONTENTS CAUTION nae aan a E aE EE A ERORIS nia 2 SAFETY NOTES co ciccscccsceceviesnssesee cok cavsecetcansecdbvesencts 2 Chapter 1 General Introduction ceceeeeeeeeeeees 3 1 1 General Introduction cece eeceeceseeteeneeeeeeeees 3 1 2 Specification K3 Feat res preseron rana aE aies 1 4 Dimension and Structure ccc ecesseeteeeeees 3 1 4 1 Dimensions ccccecceeceescecsseceseceseee R 3 EZ PA O A i EA E E E 5 1 4 2 1 Front Vi0W ceeccssessseeecesseeeeeeeeeeceteeneeteee i 5 114 22 Reat ViGWec cccciscssessesceyecscives aian e 7 Chapter 2 Operation sessesessesseseesessesereessssrseress see 8 2 1 General Operation ececeececseesceseceseeseeeeceteeneeeeees 8 2 2 Function Introduction 8 2 2 1 Main functions ccccccccssceeseeessecsseceseseeseeesseees 8 2 2 2 Sub funCtiOns a nenn ieena 8 2 3 The Operation of the Functions 8 DS E E EA deters mevechelenehemhcnditea tore 9 D3 2 P SE n a E r E ieee 10 23 3 R SC bios sevscesesse cvvecs sescvens se sevesd es ccusti te a ustesess 11 2 3 4 Store Data FUNCtION 0 00 cceececeseeneeeeeeeeeeseeneees 11 2 3 5 Recall Data FUnction cccceceeceseceteeteeeeeeeenee 12 2 3 6 OUT ON OFF key 0 cece eseese L2 2 3 7 The Menu Operation 00 ceeeeeseeeeeeseeeeeeees 13 2 3 7 1 Set Max Current sssessseseesseesessssseesseessesee 13 2 3 7 2 Set Max Power eini segonna
7. Q Enter 500 from the numeric keypad or the rotary dial press OK the LCD will now display STEP TIM NEW 30 5 Enter the time duration for the first resistance from 1 to 7200 seconds In this example 30 seconds enter 30 from the numeric keypad or rotary dial then press OK the LCD will now display STEP 2 SET 200 0 NEW 200 6 The second resistance to be entered is 200Q Enter 200 from the numeric keypad or rotary dial Press OK The LCD will now display STEP 2 TIME 1S NEW 60 18 7 The time duration for the second resistance is 60 seconds enter 60 then press OK the LCD will now display STEP 3 SET 300 0 NEW 300 8 The third resistance value is 300Q enter 300 and then press OK to confirm and then LCD will display ST STEP 3 TIME 1S NEW 120 9 The time duration for the third resistance is 120 seconds enter 120 then press OK the LCD will display ONE TIME REPEAT 10 If one time is selected the above program will be executed once If repeat is selected the program will loop continuously 11 Press exit when finished 12 Pressing the start Key keypad 7 the following program will run Step 100 Q for 30 seconds Step2 200 Q for 60 seconds Step3 300 Q for 120 seconds To stop this program Press the Stop key Keypad 13 this program may be stored in memory by pressing the Store key then enter a location between 1 and 9 from the keypad or rotary dial Press OK to en
8. STEP TIME 1S NEW 60 7 The time duration for the second power is 60 seconds enter 60 then press OK the LCD will display STEP 3 SET 0 0 NEW 150 8 The third power is 150W enter 150 and then press OK the LCD will display STE STEP TIME 1S NEW 120 9 The time duration for the third power is 120 seconds enter 120 then press OK the LCD will display ONE TIME REPEAT 10 If one time is selected the above program will be executed once If repeat is selected the program will loop continuously 11 Press exit when finished 12 Pressing the start Key keypad 7 the following program will run Step 1 50W for 30 seconds Step2 100W for 60 seconds Step3 150W for 120 seconds To stop the program from executing Press the Stop key keypad 13 this program may be stored in memory by pressing the Store key and then enter a location between 1 and 9 from the keypad or rotary dial Press OK to enter see 2 3 4 17 3Creating a program to provide a constant Resistance output 1 From the Programs menu select RESISTANCE OUT press OK 2 The LCD will display STEP NUMBER 1 NEW 3 3 Enter the number of resistance values in this example 3 resistance steps will be used Enter 3 from the keypad or rotary dial and then press OK Note from 1 to 11 resistance values may be entered The LCD will now display STEP 1 SET 500 0 NEW 100 4 Enter the first resistance value In this example it is 500
9. ata lS 2 3 7 3 Program S to sissies 11 2 3 7 4 Set up the Communication cece 19 2 3 7 5 Set up Communication Address 0 254 20 2 3 7 6 Setting a Pass word a 2 3 7 7 Set up SAVE OPTION ceeeseceteeeneeeeeees 2 35 8 EXT PUNCH ON arna a 21 Electronic Load Software Chapter3 Software Installation eee eee 22 Sul Installation tet aitii aie cade e TOA 22 3 2 Starting the program eeeceeeeseeseeeeceteeneeeeeeeees 24 3 3 Uninstalling the program eeeeeeeeeeteneeeeeees 26 CAUTION SAFETY NOTES Before switching on the DC Electronic load the protective earth terminal of this instrument must be connected to the protective conductor of the AC line power cord The AC line plug shall be inserted only in a socket outlet provided with a negated by the use of an extension cord or power cable without a protective grounding conductor The following general safety precautions must be observed during all phases of operation service and repair of this instrument Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended use of the instrument The Manufacturer assumes no liability for the customer s failure to comply with these requirements Grounding the Instrument This product is provided with a protective ground terminal To minimize shock hazard the instrument chassis and cabinet mush be connect
10. e LCD or enter a new value using the numeric key pad or rotate Rotary SW to adjust the power to a new value and then press the R set button to enter the new value Procedure Operation details LCD display Step 1 Press R set SET RISIS 200 00 NEW Step 2 Enter the password Or jump to step 4 if the ENTER PASWORD Keyboard is unlocked Step 3 Press OK button it will return to step 2 if ENTER PASWORD your password is entered wrong Step 4 Press R set to enter the original value ET RISIS 200 00 NEW 50 0 To exit the P set screen press the ESC button 2 3 4 Store data function If you have and application that requires Current Resistance power values that are used continuously or are not changed It may be desirable to use the Store Data Function This function stores Current power and resistance settings in memory for later use Ten sets of values may be stored in the L300 memory with a location number assigned to it Procedure Operation description LCD display Step 1 Press Store button ae A KK 11 Step 2 Enter the memory number you want to 1 to 10 the display will return to Step 2 for reentering store the values in from 1 to 10 using STORE 1 the numeric keypad or rotating the rotary dial Step 3 Press the OK button to confirm the values if the number is out of the range of STORE T
11. e command Mode Store Recall etc the Keypad when pressed will enter the function written in blue above the Keypad SUNE F FUNCTION Lemmas Pa ox potai Ce Ge Co Cel letett A Fig4 L300 Electronic load Keyboard layout 0 9 The Numeric keys Out ON OFF Switches the output ON or OFF Store Saves the present operating values in memory R set Sets a constant resistance value START Starts a previously entered program I set Sets the constant current value STOP Stops a previously entered program P set Sets a constant power value Recall Recalls a previously stored set of operating values Menu Displays the Menu items on the LCD A The up arrow key scrolls through the menu items upward Vv The down arrow key scrolls through the menu items downward 3 Rotary dial and function keys lt The left arrow key moves the display cursor to the left gt The right arrow key moves the display cursor to the right ESC exits a menu item or setup screen OK Enters a menu value or selects a menu item ADJUST Fig5 Rotary dial and function keys 1 4 2 2 Rear view PC connection Wire rack n l oT ao ee Se interface pe hk A EN els ht i Power supply plug Fuse ny Change over Switch Fig6 Back view The fuse can be changed easily using a small screwdriver Please use a fuse within the range of 0 3 0 5A 250V Chapter 2 Operation 2 1 General operation 1 Connect the electronic load to the
12. ed to an electrical ground The instrument must be connected to the AC Electronic Load mains through a three conductor power cable with the third wire firmly connected to an electrical ground safety ground at the power outlet For instruments designed to be hard wired to the AC power lines connect the protective ground terminal to a protective conductor before any other connection is made Any interruption of the ground conductor or disconnection of the protective ground terminal will cause a potential shock hazard that could result in personal injury If the instrument is to be energized via an external autotransformer for voltage reduction be certain that the autotransformer common terminal is connected to the neutral of the AC power lines Keep Away From Live Circuits Operating personnel must not remove instrument covers Component replacement and internal adjustments must be made by a qualified service personnel Do not touch components with power cable connected Under certain conditions dangerous voltages may exist even with the power cable removed To avoid injuries always disconnect power discharge circuits and remove external voltage sources before touching components Do not substitute parts or modify the Instrument in any way that may introduce additional hazards Do not install substitute parts or perform any unauthorized modification to the instrument Return the instrument to a qualified dealer for service and repair to ensure
13. ft most digit by pressing the lt button Rotate the Rotary dial until the digit is a 3 Then press the button the select the next digit on the right Rotate the rotary dial until the digit is a 1 Press the gt button a third time and then rotate the rotary dial until the digit is a 2 Please see figures below Press I set button to enter the new value 0 000A 0 000V OF 0 0W 3 12A IS 2 3 2 P set setting a constant power EL 300 electronic load can be set a constant power The Constant power setup procedure is as following Procedure Operation details LCD display Step 1 Press P set to display the initial SET POWER 30 0W power setting NEW Step 2 Enter the password Or jump to step 4 if the ENTER PASWORD keyboard has no password Step 3 Press OK button it will return to step 2 ENTER PASWORD if your password is wrong for reentering Step 4 Press P set to enter the original value which SET POWER 30 0W displayed on the LCD or enter a new value by NEW 72 2 using the numeric keypad or rotate the Rotary dial to the new power value and then press P SET to enter the new value To exit the P set screen press the ESC button 10 2 3 3 R set set up a constant resistance L300 electronic load can be setup for a constant resistance Constant resistance setup procedure is as following which is displayed on th
14. ick Cancel to quit Setup and then close any programs you have running Click Next to continue with the Setup program WARNING This program is protected by copyright law and international treaties Unauthorized reproduction or distribution of this program or any portion of it may result in severe civil and criminal penalties and will be prosecuted to the maximum extent possible under law Next gt Cancel Fig 3 2 Welcome Screen 3 1 3 Fig 3 3 displays the software license agreement Read it and press YES to continue Otherwise the install will be discontinued 22 Power Manage System Software License Agreement x we Pleave read the faloring License Agreement Press the PAGE DOWN key to see the sest of the agreement Do you acca al the taent c ha pincading Licante Agiseenat Ik eu chosta No Setup il cote To ratal PoweMS you must accept bt apremert _ stot i Fig 3 3 The License agreement window 3 1 4 Fig 3 4 displays the user directory the software will be installed in The default directory path that the program will be installed in is C Program Files Array PowerMS If the program is to be installed in a different directory Click the mouse on Browse to locate the desired directory 28 Powers Setup 5 x Power Manage System Lene md ratah me te mary othe Peta tt ckch Hat pp oer tan ik ee on et ter Yg eoe na m ota Porat ty chag Caret m oet Fig 3 4 The Installation Direc
15. o exit the store menu press the ESC button 2 3 5 Recall data function The 10 settings which where saved in memory 2 3 4 can now be retrieved from memory by pressing the Recall button and the numeric keypad number associated with the memory location operation is as follows This eliminates the need to set up the L300 every time it is used The recall Procedure The operation Description LCD display Step 1 Press the Recall button SRE RARE WT KK K K A xK Step 2 Enter the memory number which has RECALL 1 the previously stored values you want to recall from 1 to 10 using the numeric keypad or rotating the rotary dial Step 3 Press the OK button to confirm If the RECALL number is out of the range from 1 to 10 it will return to Step 2 for reentering To exit the Recall menu press the ESC button 2 3 6 OUT ON OFF Button This button turns the input of the EL 300 electronic load on or off If the Load is off pressing this button again will turn it off As a precaution always have the load turned off before connecting a device to the input terminals 12 2 3 7 The Menu Display The L300 electronic load provides a Menu operation for special functions The descriptions of these functions are as follows Displaying the menu arrow on the left hand side of the LCD will point to a menu item Move the arrow to the desired menu item with the AUP or VWDOWN bu
16. sword Step 4 Press I set to enter the original current value SET CURR 2 00A displayed on the LCD or enter a new value by using id 3 NEW the numeric key pad or rotate the Rotary SW to adjust the current to a new value and then press the I set to enter the new value To exit the I set setup screen press the ESC button Example Setting the input current to 3 12A 1 To set a constant current using Numeric keyboard Step1 Press I set key Step2 Enter the password using the Numeric keyboard if the keyboard is unlocked go to step 4 Step3 Press OK button if the password is wrong go to step2 and enter the correct password Step4 Press 3 1 and 2 keys to enter the new voltage value StepS Press the I set button to enter the new current value 2 To set a constant current using the Rotary dial Step If the keyboard has no password rotate the Rotary Dial and the current will continuously changed from its previous value according the direction rotation Clockwise increases counter clockwise decreases When I Set set button is pressed the cursor will initially be displayed under the least significant digit as shown on the LCD Pressing the lt button moves the cursor to the digit to the left Pressing the Button moves the cursor to the next digit to the right Example To set the current to 3 12A move the cursor to the le
17. ter see 2 3 4 2 3 7 4 Communication Setup This function is for monitoring the output data of the electronic load with a computer When you select COMMUNICATION the LCD will display as 19 BUAD RATE 4800 BUAD RATE 9600 BUAD RATE 19200 BUAD RATE 38400 Users can select a Baud rate by with the UP and DOWN keys or rotating the ROTARY dial and pressing OK button on the selected Baud rate BUAD RATE 4800 represents BUAD rate 4800bps BUAD RATE 9600 represents BUAD rate 9600bps BUAD RATE 19200 represents BUAD rate 19200bps BUAD RATE 38400 represents BUAD rate 38400bps 2 3 7 5 Setting a communication address 0 254 The communication address is for monitoring multi electronic loads in a system One computer can monitor up to 255 DC electronic by connecting through the RS232 interface Each Electronic load should have a unique address When ADDRESS SET is selected the LCD will displays SET ADDRESS NEW The communication address value may be changed by rotating the ROTARY dial to the desired address and pressing the OK button The range of the address values is from 0 to 254 2 3 7 6 Setting a Password When Key lock is selected the LCD will display ENTER PASSWORD To create a password select key lock from the Menu and press OK Enter the four digit password using the Keypad or the rotary dial and the lt gt buttons see 2 0 Press the OK button to set the Password Once the password
18. that safety features are maintained Chapter 1 General Introduction 1 1 General Introduction 1 2 Specifications The L300 Series Programmable DC Electronic Load is small sized DC programmable electronic load with nice appearance Also it is equipped with backlight LCD display Numeric keypad and rotary code switch which let it much easier to use Voltage current and power can all be displayed on the LCD or computer and tableau is distinct and clear It can be operated at con stant current mode constant resistance mode and constant power mode It is an essential instrument for scientific research education laboratory test service and so on institutions Model L 300 No of Inputs 1 Input voltage DC 0to360V Input current 0 to 30A Input power 0 to 300W Voltage resolution Current resolution 0 000 2 999 0 2 3mA 3 00 30 00 0 2 30mA Lowest Conductive Resistance lt 0 08Q Ripple lt 10mVpp Communication RS232 Monitor software Includes VC VB DELPHI LABVIEW COM Modules Memory 10 location EEPROM Protective mode Over voltage over current over power over heating and polarity reversing Power voltage AC 110 220 60 50HZ Weight 11 Ibs Accessories Software users manual AC power cable handlebars RS232 cables Rack mounting hardware Option Parts 0 000 3 999 0 2 3mV 4 00 35 999 0 2 30mV
19. ting a program is as follows 1 Creating a program to provide a series of constant Current values 1 Select CURRENT OUT then press OK 2 The LCD will display STEP NUMBER NEW 3 3 Enter the number of current values The number of values is from 1 to a maximum of 11 In this example 3 values steps will be programmed enter 3 using the up and down keys or the rotary button and then press OK The LCD will display STEP 1 SET 0 00 NEW 1 4 Enter the first current value This example 1 A will be entered as 1 then press OK The LCD will now display STEP 1 TIM 1S NEW 2 14 5 A time duration value from 1 to 7200 seconds Max must now be entered for the first current value This example the time is 2 seconds and is entered as 2 press OK and the LCD will now display STEP 2 SET 0 00 NEW 2 6 The second current value to be entered is 2A enter 2 then press OK LCD will now display STEP 2 TIM 1S NEW 5 7 The time duration for the second current is 5 sec enter 5 then press OK the LCD will now display STEP 3 0 00 NEW 3 8 The third current value is 3A enter 3 then press OK the LCD will now display STEP 3 TIM 1S NEW 10 9 The third time duration is 10 sec enter 10 then press OK the LCD will now display ONE TIME REPEAT 10 If one time is selected the above program will be executed once If repeat is selected the program will loop continuously
20. tory Path Set window 3 1 5 In Fig 3 5 the installation type is selected Normally most users will select TYPICAL Click the mouse on NEXT to continue 22 PoweeltS Setup Power Manage System Fig 3 5 The Installation Window 23 3 1 6 Fig 3 6 displays a list of existing program folders and the default program folder named ARRAY ELECTONIC where the program will be installed Setup Manage System x date a a Yah yee aa maas mane ose oe Sa Er wan Fig 3 6 The Program Folder window 3 1 7 Generally click NEXT and accept the default program folder Please wait until the files are copied Fig 3 7 displays the files being installed The software installation is now complete Seno fanage System Fig 3 7 The Installation window showing the files being installed 3 2 Starting the Program 3 2 1 In Fig 3 8 click the mouse on Start Program Array and then electronic The initial program start up window will be displayed in fig 3 9 LB Pine melt Tei Poklici b ae ar k E omn a F hmm imm L Cane UON Fr eiomsi amil Titi a ELFA Consens 5 notch ees C Peck Kegraes Fig 3 8 The System Start Interface PR Mamai EE Server 18 Po so mji LA en her fer Pa ze 24 3 2 2 The start screen is display Programmable DC Electronic Loud A Fig 3 9 System Start Diagram 3 2 3 Enter the Main Interface screen Mmj 6230 mar jme jm am
21. ttons or the rotary dial Press OK to select the desired menu item Procedure The operation Methods LCD display Step 1 Press Menu button Step 2 The LCD displays the menu items as a list MAX CURRENT SET To scroll through the menu press the An MAX POWER SE T PROGRAM SET COMMUNICATION SET ADRESS SET SAVE OPTION KEY LOCK EXIT To exit the Menu at any time press ESC button The menu items include MAX CURRENT SET MAX POWER SET PROGRAM SET COMMUNICATION SET ADDRESS SET SAVE OPTION KEY LOCK Function These items will be described below 2 3 7 1 Set Maximum current When MAX CURRENT SET is selected the LCD will display MAX CURR A NEW The Max current value may be set using the Numeric keyboard or rotating the ROTARY Dial then Press OK button 2 3 7 2 Set the maximum power When MAX POWER SET function is selected the LCD will display MAX POWER W NEW 13 The MAX Power value maybe set using the Numeric keyboard or rotating the ROTARY button and then pressing the OK button to confirm 2 3 7 3 Program Set When PROGRAM SET is selected from the menu the LCD will display CURRENT OUT POWER OUT RESISTANCE OUT When selected a series steps of constant current constant power or constant resistance values along with a time interval may be programmed in to the EL 300 using the up and down keys or the rotary button The procedure for crea
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