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BK Precision BK9242-GPIB User Manual
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BK Precision BK9242-GPIB User Manual

BK Precision BK9242-GPIB User Manual

Multi-range dc power supplies
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Summary of Contents for BK Precision BK9242-GPIB

  • Page 2 Safety Summary The following safety precautions apply to both operating and maintenance personnel and must be followed during all phases of operation, service, and repair of this instrument. Before applying power to this instrument: • Read and understand the safety and operational information in this manual. •...
  • Page 3 Electrical Power This instrument is intended to be powered from a CATEGORY II mains power environment. The mains power should be 115 V RMS or 230 V RMS. Use only the power cord supplied with the instrument and ensure it is appropriate for your country of use. Do not use this instrument in an electrical environment with a higher category rating than what is specified in this manual for this instrument.
  • Page 4 Environmental Conditions This instrument is intended to be used in an indoor pollution degree 2 environment. The operating temperature range is 0 C to 40 C and 20% to 80% relative humidity, with no condensation allowed. ∘ ∘ Measurements made by this instrument may be outside specifications if the instrument is used in non- office-type environments.
  • Page 5 Do not operate instrument if damaged If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other material gets on or inside the instrument, remove the instrument’s power cord, remove the instrument from service, label it as not to be operated, and return the instrument to B&K Precision for repair.
  • Page 6 Do not touch live circuits Instrument covers must not be removed by operating personnel. Component replacement and internal adjustments must be made by qualified service-trained maintenance personnel who are aware of the hazards involved when the instrument’s covers and shields are removed.
  • Page 7 Servicing Do not substitute parts that are not approved by B&K Precision or modify this instrument. Return the instrument to B&K Precision for service and repair to ensure that safety and performance features are maintained. Fuse replacement must be done by qualified service-trained maintenance personnel who are aware of the instrument’s fuse requirements and safe replacement procedures.
  • Page 8 Compliance Statements Disposal of Old Electrical & Electronic Equipment (Applicable in the European Union and other European countries with separate collection systems) This product is subject to Directive 2002/96/EC of the European Parliament and the Council of the European Union on waste electrical and electronic equipment (WEEE), and in jurisdictions adopting that Directive, is marked as being put on the market after August 13, 2005, and should not be disposed of as unsorted municipal waste.
  • Page 9 Contents Introduction Product Overview Contents Features Dimensions Rackmount Installation Front Panel Display Rear Panel Getting Started Input Power and Fuse Requirements Fuse Requirements Check or Replace Fuse Preliminary Check Self test Errors Basic Front Panel Operation Keys 3.1.1 Function Keys 3.1.2 Soft Keys 3.1.3...
  • Page 10 4.2.5 On/Off Delay 4.2.6 LED Mode List Mode List Setup 5.1.1 List State: 5.1.2 List Number: 5.1.3 Pace: 5.1.4 Trigger Source 5.1.5 After List Edit List 5.2.1 Load/Save List 5.2.2 List Number 5.2.3 Next 5.2.4 Repeat 5.2.5 Steps List Run Battery Charge Function Charge Test 6.1.1...
  • Page 11 7.2.2 File Path 7.2.3 T. Stamp Filename 7.2.4 Log Data 7.2.5 Status Code 7.2.6 Trigger Source 7.2.7 Datalog Start/Stop Utilities Menu User Settings 8.1.1 Key Lock Output 8.1.2 Beep Sound 8.1.3 Date 8.1.4 Time 8.1.5 Screen Intensity 8.1.6 Language Remote Interface 8.2.1 USB Settings 8.2.2...
  • Page 12 10.2 Recall the Instrument’s Settings 10.2.1 Recall from USB 10.3 Screenshot 10.4 Power-On Settings 11 Calibration Adjustment Procedure 11.1 Voltage Calibration Adjustment 11.2 Current Calibration Adjustment 11.3 OVP Calibration Adjustment 11.4 OCP Calibration Adjustment 11.5 RTC Calibration Adjustment 12 Performance Verification 13 Specifications 14 Service Information 15 LIMITED THREE-YEAR WARRANTY...
  • Page 13 Introduction 1.1 Product Overview 9240: 32 V / 8 A / 120 W 9241: 60 V / 4 A / 120 W Figure 1.1 Front View The 9240 series multi-range DC power supplies combine industry-leading power density and performance with an extensive set of features in a compact 2U form factor. The series produces 120/200 W of clean power with exceptionally low ripple and noise characteristics.
  • Page 14 Introduction 1.2 Contents Please inspect the instrument mechanically and electrically upon receiving it. Unpack all items from the shipping carton, and check for any obvious signs of physical damage that may have occurred during transportation. Report any damage to the shipping agent immediately. Save the original packing carton for possible future reshipment.
  • Page 15 Introduction 1.4 Dimensions The 9240 Series dimensions are approximately: 213 mm (8.4 in) x 88.2 mm (3.47 in) x 330 mm (13 in) (W x H x D). Figure 1.2 Dimensions...
  • Page 16 Introduction 1.5 Rackmount Installation The 9240 Series is compatible with the optional 19-inch rackmount kit model RK2US. The RK2US installation instructions can be downloaded from bkprecision.com Figure 1.3 Dimensions...
  • Page 17 Introduction 1.6 Front Panel Figure 1.4 Front Panel Item Name Description Power Button Power the instrument ON or OFF Function Keys section 3.1.1 for details. USB Host Port USB port used to connect flash drives. Display Visual presentation of the device function and measurements. Numeric Keypad Used to enter precise values.
  • Page 18 Introduction 1.7 Display Icon Description The output is disabled. The output is enabled and in constant voltage mode The output is enabled and in constant current mode Data loggin is enabled but not recording. Data logging is enabled and recording. The instrument is connected to a network.
  • Page 19 Introduction 1.8 Rear Panel Figure 1.5 Rear Panel Item Name Description Rear panel output with remote sense. Internal relays switch between Output/Sense local and remote sensing. Kensington Lock the instrument to a fixed location using the security lock via the security slot lock hole.
  • Page 20 Getting Started Before connecting and powering up the instrument, please review and go through the instructions in this chapter. 2.1 Input Power and Fuse Requirements The supply has a universal AC input that accepts line voltage input within: 9240 9241 9242 AC Line Input 100 - 240 VAC...
  • Page 21 Getting Started 2.2 Fuse Requirements An AC input fuse is necessary when powering the instrument. The below table shows the fuse required for all models. Model Fuse Specification 9240 3.15 AT, 250 V 9241 3.15 AT, 250 V 9242 4 AT, 250 V 2.3 Check or Replace Fuse For safety, no power should be applied to the instrument while changing line voltage operation.
  • Page 22 Getting Started Any disassembling of the case or changing the fuse not performed by an authorized service technician will void the warranty of the instrument Hazardous voltages may exist at the outputs and the load connections when using a power supply with a rated output greater than 60 V. To protect personnel against accidental contact with hazardous voltages, ensure that the load and its connections have no accessible live parts.
  • Page 23 Getting Started 2.4 Preliminary Check Complete the following steps to verify the Power supply is ready for use. Verify and check to make sure proper AC voltages are available to power the Verify AC instrument. The AC voltage range must meet the acceptable specification as Input Voltage explained in section “2.1 Input Power and Fuse...
  • Page 24 Getting Started Figure 2.3 Home Display 2.5 Self test Errors The following errors will be displayed if the self-test did not complete successfully: Error Message Description EEPROM Fail The internal EEPROM is corrupted or damaged. System Lost Last system settings within the EEPROM are lost. Module Fail Channel response failure.
  • Page 25 Basic Front Panel Operation At power-on, the power supply will automatically enter the front-panel operation mode and the instrument can be controlled via the front panel keys and knob. 3.1 Keys 3.1.1 Function Keys There are three main keys: Navigates the 2 available Opens up a menu giving Opens the main menu bar.
  • Page 26 Basic Front Panel Operation 3.1.2 Soft Keys The unit has six soft keys, which are located beneath the screen. Each key selects the corresponding function. Functions will vary depending on the current menu or display. Figure 3.1 Soft Keys 3.1.3 Numeric Keys The numeric keys allow the configuration of various parameters.
  • Page 27 Basic Front Panel Operation 3.2 Display The power supplies have two main display modes: output overview and live output monitoring display. Press the button to cycle between the different display modes or to return home when viewing any other menu. Output Overview Provides information of the outputs’: Allows configuration of:...
  • Page 28 Basic Front Panel Operation Figure 3.3 Output Overview Display Live Output Monitoring The live output monitoring display shows metered output voltage and current over time. It is always active and will continuously plot and overwrite the oldest value when the display graph is full. Figure 3.4 Live Output Monitoring Display The Live output display can be configured by setting the: Voltage, Current, and Time Scale.
  • Page 29 Basic Front Panel Operation 3. Use the rotary knob to navigate through the available scales. Current Scale The current scale of each output can be set from 10 mA/Div up to 3 A/Div. 1. While in Live Output Display use the softkeys to select Current Scale. 2.
  • Page 30 Basic Front Panel Operation 3.3 Check Model and Firmware Version The firmware version, model, and serial number can be verified by entering the security settings. Press button then use the soft keys to select Utilities > Help > System Info to view model and firmware information.
  • Page 31 Output Configuration 4.1 Protection Settings 4.1.1 Over Voltage Protection (OVP) Over voltage protection is always enabled, however the user can set the OVP voltage limits. 1. Press the button then use the soft keys to select Output config > Protection settings 2.
  • Page 32 Output Configuration 4.1.4 Vmax/Vmin Configure the maximum or minimum voltage value the user can set from the protection settings. 1. Press the button then use the soft keys to select Output config > Protection settings 2. Select Vmax or Vmin and set a maximum or minimum value using the numeric keypad or rotary knob. 4.1.5 Protection Clear Protections are cleared from the output configuration settings as shown in the following steps.
  • Page 33 Output Configuration Do not connect any power source into any of the terminals at any time during operation. When output is enabled, DO NOT use your hands to touch the terminals or the screws that are designed to tighten wires to the terminals. Doing so may create a shock hazard under high voltage output conditions.
  • Page 34 Output Configuration 4.2.3 Voltage Slew The rising voltage slew rate can be set in volts per second. The voltage slew range can be set from 0.001 V/s to 3200.0 V/s. 1. Press the button then use the soft key to select Output config > Output Settings. 2.
  • Page 35 Output Configuration 4.2.6 LED Mode The 9240 series offer the LED mode, which enables them to function specifically for LED test applications. When this mode is Enabled, the power supply can operate in such a way as to minimize or almost eliminate the inrush current drawn by the LED load, which normally exists when the output swithes from an OFF state to an ON state.
  • Page 36 Output Configuration Figure 4.2 Inrush Current With and Without LED Mode Enabled With LED mode ON (enabled), the power supply can minimize or eliminate any inrush current from turning the output ON, which in turn will minimize damage or life of the LEDs under test. For LED mode to function correctly, the output must be turned OFF when connecting between the power supply and the LEDs under test.
  • Page 37 List Mode The 9240 series is capable of storing up to 10 programmable lists in the internal memory. Each list can have up to 100 configurable steps. If all ten list numbers are taken, a list can also be saved to a USB drive. Lists can be loaded from a USB drive, allowing for a larger collection of programmed lists.
  • Page 38 List Mode 5.1.2 List Number: Select a list program from the memory to run on the channel. Use the numeric keypad or rotary knob to select list number. Press to assign the list to a channel. 5.1.3 Pace: Set the pace in which steps are executed. a.
  • Page 39 List Mode 5.1.5 After List Sets the voltage and current settings at the end of the list program. a. DC: Returns to the last DC output voltage and current setting prior to enabling list mode. b. Last: Retains the last step voltage and current setting after the list program ends. If the list is aborted, the output will return to the last set voltage and current output values before the list began, even if After List is set to Last.
  • Page 40 List Mode 5.2 Edit List Press the button then use the soft key to select List Setup > Edit List. Use the softkeys to set the following parameters. 5.2.1 Load/Save List Save to USB Save the selected list program to a USB. Use the rotary knob to navigate through the file paths of the USB.
  • Page 41 List Mode Load from USB Load a previously saved list from a USB to selected List Number. Use the rotary knob to navigate through the file paths of the USB. Use the button to expand folders. Once the desired location has been found select Load by pressing the softkey furthest to the left. Figure 5.4 Load from USB The list must be saved/overwritten at the selected list number location before it is able to be assigned.
  • Page 42 List Mode 5.2.4 Repeat To repeat a list, set Repeat using the numeric keypad or rotary knob and press 5.2.5 Steps all, or Add, delete, clear edit steps. Add Step Use the softkeys to add a step to the list. The step added will be a duplication of the step selected before pressing Add Step.
  • Page 43 List Mode Edit Step Use the rotary knob to navigate the steps available.(select a row) To edit parameters of the step, use the keys.(selects a column) See figure for the parameter each row edits. Press to toggle enable/disable BOST and/or EOST. Figure 5.6 List Configuration Description Step Parameters...
  • Page 44 List Mode 5.3 List Run Before running a list all list parameters must first be configured. To configure and run a list follow the steps below: 1. Set the settings of the channel which will output the list. See a. Enable List State on desired channel.
  • Page 45 List Mode 5. Select List Abort to end the list before all steps elapse. If the all steps elapse the list will end and the output will be set to chosen After List parameter. – If After List is set to DC the output will output the Vset and Iset values. –...
  • Page 46 Battery Charge Function The Battery Charge Function can be configured to set the desrired charging parameters. 6.1 Charge Test Press the button then use the soft key to select List/Battery > Batt Test Setup > Charge Test. Figure 6.1 List Setup Use the softkeys to select one of the available functions/parameters.
  • Page 47 Battery Charge Function 6.1.2 Save/Load Profile Save the set parameters of the profile to a flashdrive or load a previously saved profile from the flash drive to the 9240. The unit does not have internal memory to store more than one profile. Press the button then use the soft key to select List Battery >...
  • Page 48 Battery Charge Function 6.1.4 I Limit Set a current limit value limiting the curring being supplied to the battery. Press the button then use the soft key to select List Battery > Batt Test Setup > Charge Test > I Limit. –...
  • Page 49 Battery Charge Function 6.2 Battery Test Settings 6.2.1 Sampling Time Set a time duration for the charging function. Press the button then use the soft key to select List Battery > Batt Test Setup > Batt Test Settings > Sampling Time. Use the numeric keypad or rotary motor to select the sampling time.
  • Page 50 Battery Charge Function For Digital IO and Remote the first trigger will turn Data log on. A second trigger will begin data recording. will be displayed on the top right when data is being logged. See section 7.2.7. 6.2.5 File Path Press the button then use the soft key to select List/Battery >...
  • Page 51 Battery Charge Function 6.3 Fail Safe Settings Enable/Disable and edit the safety parameters of the Battery Charging Function 6.3.1 Fail State Press the button then use the soft key to select List/Battery > Batt Test Setup > Fail Safe Settings > Fail State. Press the corresponding softkey to toggel the battery fail state Enable/Disable.
  • Page 52 Battery Charge Function 6.3.4 Stop Wh Set a Wh stop time. Press the button then use the soft key to select List/Battery > Batt Test Setup > Fail Safe Settings > Stop Wh. – Use the numeric keypad or rotary knob to set the desired stop time. (0 to 9999.99 s) –...
  • Page 53 Data Logger The data logger can record the output voltage, current, and the error codes. The Data Logger can be configured to record either Voltage only, Current only, or both. Connect a USB flash drive to the front panel USB port. Max. Recording time will vary based on the flash drive size and the amount of the data being logged.
  • Page 54 Data Logger 7.2 Parameters 7.2.1 Sampling Interval Press the button then use the soft key to select Data logger > Sampling Interval. Use the numeric keypad or rotary motor to select the sampling interval. Press to assign the selected value. (.2s to 300s) 7.2.2 File Path Press the button then use the soft key to select Data logger >...
  • Page 55 Data Logger 7.2.4 Log Data Press the button then use the soft key to select Data logger > Next Pg. > Log Data. Select data to be logged. – All: Record both voltage and current. – Voltage: Record the voltage. –...
  • Page 56 Data Logger Data order will vary depending on Log Data selected. 7.2.5 Status Code Press the button then use the soft key to select Data logger > Status Code. Toggle to enable/disable status code. Enabled Status Code will record all codes reported. See for an example.
  • Page 57 Data Logger For Digital IO and Remote the first trigger will turn Data log on. A second trigger will begin data recording. will be displayed on the top right when data is being logged. See section 7.2.7 7.2.7 Datalog Start/Stop Press the button then use the soft key to select Data logger >...
  • Page 58 Utilities Menu Configure the settings in the following menus: • User Settings • Remote Interface • I/O Configuration • Test/Admin • Error Log • Help 8.1 User Settings Press the button then use the soft key to select Utilities > User Settings. The system’s settings can be configured here.
  • Page 59 Utilities Menu 8.1.3 Date Press the button then use the soft key to select Utilities > User Settings >Date. Use the number pad to set the date. YY/MM/DD 8.1.4 Time Press the button then use the soft key to select Utilities > User Settings >Time. Use the number pad to set the time.
  • Page 60 Utilities Menu 8.2.1 USB Settings Press the button then use the soft key to select Utilities > I/O Config > USB Settings. The USB device port is located in the rear-panel. See The 9240 series are both USBTMC and USB VCP compliant. In the USB Settings menu use the soft keys to select either: –...
  • Page 61 Utilities Menu Figure 8.2 USB Port Settings 8.2.2 LAN To configure the LAN Settings Press the button then use the soft key to select Utilities > I/O Config > LAN Settings. The following settings are available in LAN Settings: • IP Mode •...
  • Page 62 Utilities Menu IP Mode Select Dynamic Host Configuration Protocol (DHCP) or Manual to set how the LAN settings will be configured. Press the button then use the soft key to select Utilities > I/O Config > LAN Settings > IP MODE. The easiest way to configure the LAN settings is to set the IP Mode to DHCP.DHCP will automatically assign an IP address to the instrument.
  • Page 63 Utilities Menu Primary DNS Domain Name Service (DNS) is the system that automatically translates Internet addresses to the numeric machine addresses. The DNS address is the IP address of the system that performs this service. If IP Mode is set to DHCP DNS will automatically be set. To set the Primary DNS : Press the button then use the soft key to select Utilities >...
  • Page 64 Utilities Menu Figure 8.4 Reset Restore Default Restore Default will set all LAN settings to their factory defaults. To restore factory defaults: Press the button then use the soft key to select Utilities > I/O Config > LAN Settings > Restore Default .
  • Page 65 Utilities Menu LAN Status LAN Status provides an overview of the LAN settings. To view the LAN status: Press the button then use the soft key to select Utilities > I/O Config > LAN Status . Figure 8.6 LAN Status...
  • Page 66 Utilities Menu 8.3 GPIB (optional) In GPIB the GPIB address can be changed from 01 to 30. To change the GPIB address: Press the button then use the soft key to select Utilities > I/O Config > GPIB. Figure 8.7 GPIB Address Use the numeric keypad to enter the new address, then press the key.
  • Page 67 Utilities Menu 8.4 Digital I/O To enter the Digital I/O menu: Press the button then use the soft key to select Utilities > I/O Config > Digital I/O. Select the function and polarity of pins: 1, 2, and 3. • Pin Functions •...
  • Page 68 Utilities Menu 8.4.1 Functions Default: None To configure a pin: Press the button then use the soft key to select Utilities > I/O Config > Digital I/O > Pin(#). None Set selected pin to have no function. Digital In Toggle to select In/Out digital function. Digital In: Receive a signal from external device.
  • Page 69 Utilities Menu Fault Out Enable a fault condition, which generates a protection fault signal on the digital port. Different conditions such as over voltage, over current, or over temperature will generate a fault event. The fault event will “disable” all outputs without turning them off. The outputs are “disabled”...
  • Page 70 Utilities Menu The inhibit input is ignored. Latched A logic-true transition signal will disable the power supply. The output will remain disabled. Live Power supply output follows the state of the inhibit signal. If the inhibit signal is true the output is disabled. When it is false the output is enabled.
  • Page 71 Utilities Menu 8.5.2 Security The Security Settings are locked and can be accessed by entering the default code 77416699. Figure 8.10 Security Locked The default password can be change in the Change Code menu. If the set code is forgotten contact B&K Precision customer support. Use the password (77416699) to gain access to the following settings.
  • Page 72 Utilities Menu 8.5.3 Lock Sets security status to Lock. Press the button then use the soft key to select Utilities > Test/Admin > Security > Lock . If Done is selected without locking the security settings, the user will be prompted that the security settings will not be locked.
  • Page 73 Utilities Menu 8.5.9 Factory Reset Saved settings and list memory are deleted. Help files and hex files will be be preserved. Press the button then use the soft key to select Utilities > Test/Admin > Security > Next Pg. > Factory Reset .
  • Page 74 Utilities Menu 8.6 Error Log View up to 50 previously set error codes. Press the button then use the soft key to select Utilities > Error Log. Figure 8.11 Error Log Errors are placed in the order that they were encountered. 1 being the most recent. The error log displays up to 50 error codes.
  • Page 75 Utilities Menu 8.7 Help To enter the Help menu: Press the button then use the soft key to select Utilities > Help. Figure 8.12 Help Menu Use the rotary knob to navigate the help options shown in figure 8.12. To select the Quick help topic press the key or press the Select softkey.
  • Page 76 Utilities Menu 8.8 On Screen Help Press and hold any soft key that selects a menu branch for 3 seconds to receive an explanation of what can be found in that branch.
  • Page 77 Key Lock Lock all front panel keys including Press the button then use press and hold the soft keys Key Lock for 3 seconds. Figure 9.1 Key Lock If Key Lock Output is enabled, holding Key Lock for 3 seconds locks all front panel keys except .
  • Page 78 Save/Recall Save/Recall the instruments Output Settings and Power-On Settings. 10.1 Save the Output Settings 10.1.1 Save to Internal Memory Save the instrument’s output settings to the internal memory. A total of 10 (0 to 9) output settings can be saved. To save the output settings : Press the button then use the soft keys to select Save >...
  • Page 79 Save/Recall Using the rotary knob navigate through the file paths of the USB. Use the button to expand folders. Once the desired location has been found press Save. The output settings will be saved after a short delay. Figure 10.2 Save to USB 10.2 Recall the Instrument’s Settings Recall previously saved output settings from the internal memory.
  • Page 80 Save/Recall Figure 10.3 Recall from Internal Memory Figure 10.4 Recall from USB 10.3 Screenshot To take a screenshot: Press together for 3+seconds until you hear a beep. A USB must be plugged in for this function.
  • Page 81 Save/Recall 10.4 Power-On Settings Load previously saved output parameters on power-on. To turn off Power-On Mode: Press the button then use the soft keys to select Power-On Settings > Power- On Mode > Off. Last To set the output parameters to the previous parameters before powering-off the instrument: Press the button then use the soft keys to select Power-On Settings >...
  • Page 82 Save/Recall 9240 Parameter Default VSET 0.000 32.320 0.000 ISET 1.00 8.08 0.015 Vmax 32.320 32.320 1.000 Vmin 0.000 32.320 Vslew 1600 3200 0.001 Islew OVP Limit 35.200 35.200 0.000 OCP Limit 8.800 8.800 0.015 Timer 99:59:59 99:59:59 00:00:00 On Delay 0.000 3600 0.000...
  • Page 83 Save/Recall 9241 Parameter Default VSET 0.000 60.600 0.000 ISET 1.00 4.000 0.015 Vmax 60.600 60.600 1.000 Vmin 0.000 60.600 Vslew 1600 3200 0.001 Islew OVP Limit 66.000 66.000 0.000 OCP Limit 4.400 4.400 0.015 Timer 99:59:59 99:59:59 00:00:00 On Delay 0.000 3600 0.000...
  • Page 84 Save/Recall 9242 Parameter Default VSET 0.000 60.600 0.000 ISET 1.00 10.100 0.015 Vmax 60.600 60.600 1.000 Vmin 0.000 60.600 Vslew 1600 3200 0.001 Islew OVP Limit 66.000 66.000 0.000 OCP Limit 11.000 11.000 0.015 Timer 99:59:59 99:59:59 00:00:00 On Delay 0.000 3600 0.000...
  • Page 85 Calibration Adjustment Procedure Calibration Interval The recommended calibration interval for the 9240 series is one year. To enter the Calibration Menu: Press the button, then use the soft key to select Utilities > Test/Admin > Security > Calibrate. In the Calibration Menu use the softkeys to select a parameter from the menu to calibrate. •...
  • Page 86 Calibration Adjustment Procedure 11.1 Voltage Calibration Adjustment For the voltage calibration procedure a precise DMM will be needed. To adjust the voltage calibration: 1. Enter the Calibration Menu • Press the button, then use the soft key to select Utilities > Test/Admin > Security. Use the numeric keypad to enter security code.
  • Page 87 Calibration Adjustment Procedure 11.2 Current Calibration Adjustment For the current calibration procedure a precise DMM will be needed. To adjust the current calibration: 1. Enter the Calibration Menu • Press the button, then use the soft key to select Utilities > Test/Admin > Security. Use the numeric keypad to enter security code.
  • Page 88 Calibration Adjustment Procedure 11.3 OVP Calibration Adjustment For the over voltage protection calibration the instrument’s voltage must be calibrated. To adjust the OVP calibration: 1. Enter the Calibration Menu • Press the button, then use the soft key to select Utilities > Test/Admin > Security. Use the numeric keypad to enter security code.
  • Page 89 Calibration Adjustment Procedure 11.4 OCP Calibration Adjustment For the over current protection calibration the instrument’s current must be calibrated. To adjust the OCP calibration: 1. Enter the Calibration Menu • Press the button, then use the soft key to select Utilities > Test/Admin > Security. Use the numeric keypad to enter security code.
  • Page 90 Calibration Adjustment Procedure 11.5 RTC Calibration Adjustment To adjust the Real-Time Clock(RTC) calibration: 1. Enter the Calibration Menu • Press the button, then use the soft key to select Utilities > Test/Admin > Security. Use the numeric keypad to enter security code. See the subsection Security. Press the button to enter the security menu.
  • Page 91 Performance Verification Performance verification ensures the instrument will meet specifications listed in the datasheet. Load regulation can be tested for both the front and rear outputs. Note: All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 23 °C ±...
  • Page 92 Performance Verification Note: Keep all cables as short as possible. 3. Turn on the power supply. 4. Set the power supply settings of the channel being tested to the values given in table 12.1. 5. Set the electronic load settings to the stated values in table 12.1. 6.
  • Page 93 Performance Verification Figure 12.2 Rear Panel Wiring Diagram 8. Enable the electronic load. Monitor the power supply to ensure it remains in CV mode.If the power supply switches to CC slightly lower the current on the electronic load until the power supply return to CV mode.
  • Page 94 Specifications Multi-Range DC Power Supplies 9240 Series Specifications Note: All specifications apply to the unit after a temperature stabilization time of 15 minutes over an ambient temperature range of 23 °C ± 5 °C. Specifications are valid for front panel operation. Model 9240 9241...
  • Page 95 Service Information Warranty Service: Please go to the support and service section on our website at bkprecision.com to obtain an RMA #. Return the product in the original packaging with proof of purchase to the address below. Clearly state on the RMA the performance problem and return any leads, probes, connectors and accessories that you are using with the device.
  • Page 96 LIMITED THREE-YEAR WARRANTY B&K Precision Corp. warrants to the original purchaser that its products and the component parts thereof, will be free from defects in workmanship and materials for a period of three years from date of purchase. B&K Precision Corp. will, without charge, repair or replace, at its option, defective product or component parts.
  • Page 97 LIMITED THREE-YEAR WARRANTY Version: July 2, 2025...

This manual is also suitable for:

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