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Related Manuals for BK Precision MR Series
Summary of Contents for BK Precision MR Series
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Page 2: Safety Summary
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 Category III (CAT III): Measurement instruments whose measurement inputs are meant to be connected to the mains installation of a building. Examples are measurements inside a building's circuit breaker panel or the wiring of permanently-installed motors. Category IV (CAT IV): Measurement instruments whose measurement inputs are meant to be connected to the primary power entering a building or other outdoor wiring.
- Page 4 Electrical Power This instrument is intended to be powered from a CATEGORY II mains power environment. The mains power should be 120 V RMS or 240 V RMS. Use only the power cord supplied with the instrument and ensure it is appropriate for your country of use.
- Page 5 In environments where there is a danger of any liquid being spilled on the instrument or where any liquid can condense on the instrument. In air temperatures exceeding the specified operating temperatures. In atmospheric pressures outside the specified altitude limits or where the surrounding gas is not air.
- Page 6 This instrument is not authorized for use in contact with the human body or for use as a component in a life-support device or system. 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 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. Cooling fans This instrument contains one or more cooling fans. For continued safe operation of the instrument, the air inlet and exhaust openings for these fans must not be blocked nor must accumulated dust or other debris be allowed to reduce air flow.
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Page 8: Compliance Statements
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: Ce Declaration Of Conformity
CE Declaration of Conformity This instrument meets the requirements of 2006/95/EC Low Voltage Directive and 2004/108/EC Electromagnetic Compatibility Directive with the following standards. Low Voltage Directive UL 61010-1:2012 EMC Directive EN 55011:2009+A2:2010 EN 61000-3-11: 2000 EN 61000-3-12: 2011 EN 61000-4-2 / -3 / -4 / -5 / -6 / -8 / -34 EN 61326-1: 2013 EN 61326-2-1: 2013... -
Page 10: Safety Symbols
Safety Symbols Refer to the user manual for warning information to avoid hazard or personal injury and prevent damage to instrument. Electric Shock hazard On (Supply). This is the AC supply connect/disconnect switch on the front of the instrument. Off (Supply). This is the AC mains connect/disconnect switch on the front of the instrument. -
Page 11: Table Of Contents
Table of Contents Safety Summary ........................ 1 Category rating ........................... 1 Compliance Statements......................7 CE Declaration of Conformity ....................8 Low Voltage Directive ........................ 8 EMC Directive ..........................8 Safety Symbols ........................9 Table of Contents ......................... 10 General Information ....................... 13 Features: .......................... - Page 12 Menu Options ......................... 28 3.1.1 Menu Tree ......................29 3.1.2 How to Access the Menu ................29 Configure Voltage/Current Output ................... 30 3.2.1 Setting Voltage ....................30 3.2.2 Setting Current ....................31 3.2.3 Remote Sense ....................31 Voltage/Current Measurement ..................33 CONFIG Menu........................
- Page 13 4.1.3 USBTMC: ......................64 4.1.4 RS232 ........................64 4.1.5 GPIB ........................65 4.1.6 RS485 ........................66 4.1.7 LAN (Ethernet) ....................68 4.1.8 Web server ......................69 Error/Event List ....................... 72 Calibration ........................73 Voltage Calibration ......................74 Current Calibration ......................75 OVP Calibration ........................
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Page 14: General Information
The MR series power supplies also provide over voltage protection (OVP) and over current protection (OCP) features used to keep the output voltage and current within a specified safety level and preventing damage to the UUT (Unit Under Test). -
Page 15: Product Dimensions
1 x AC Power Cord 1 x Certificate of Calibration 1 x Test Report Verify that all items above are included in the shipping container. If anything is missing, please contact B&K Precision. 1.3 Product Dimensions The MR25080, MR50040, and MR100020 power supply’s dimensions are approximately: 420mm (16.54in) x 88mm (3.46in) x 532mm (20.95in) (WxHxD). -
Page 16: Front Panel Overview
Figure 1.2 – Side Panel Dimensions 1.4 Front Panel Overview Figure 1.3 – Front Panel Overview... -
Page 17: Front Panel Description
Front Panel Description 1.4.1 Power On/Off switch Vacuum Fluorescent Display LAN Status indicator Keypad lock indicator Function keys Numeric keys Function keys Rotary Knob Left, Right cursor keys 1.5 Keypad Overview Figure 1.4 – Keypad Overview Keypad Description 1.5.1 Shift key Enables access to secondary functions (Labeled in blue) On/Off Controls the output state. - Page 18 Iset / Timer Configures output current or setup the timer setting. Recall / Save button Saves and recalls instrument settings. Escape button Exits menu settings. Zero / Lock button Inputs a value of zero or locks the front panel buttons. Decimal / Local button Inputs a decimal point for values or sets the instrument back to local mode...
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Page 19: Rear Panel Overview
1.6 Rear Panel Overview Figure 1.5 – Rear Panel Overview 1.6.1 Rear Panel Description Output USB interface RS-485 interface Analog programming interface (DB25 connector) Ethernet (LAN) interface GPIB interface Earth ground connection Remote sense terminals RS-232 interface AC input receptacle... -
Page 20: Display Overview
1.7 Display Overview Figure 1.6 – Display Overview Display Description 1.7.1 Measured voltage Settings voltage and current Measured power output Measured current Indicates output is disabled Indicates constant current (CC) operation Indicates constant voltage (CV) operation Indicates remote mode Addr Indicates remote communication activity Error Indicates an error has occurred... -
Page 21: Getting Started
2 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 2.1.1 Input Power The supply has a universal AC input that accepts line voltage input within: AC Input: 210 V –... - Page 22 Follow the instructions below to connect the AC power cable to the AC input of the power supply in the rear panel. 1. First, connect the input receptacle (green terminal block) of the cable to the input terminals of the power supply. 2.
- Page 23 Refer to the descriptions below to connect the other end of the AC power cord to the AC distribution panel. Do NOT plug the AC power cord into the wall socket prior to connecting ALL three AC power wires to the rear panel and securely mount the safety metal housing over the input receptacle.
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Page 24: Fuse Replacement
2.2 Rackmount Installation The MR series power supplies are designed to fit in a space of two rack units (2U) and can be mounted in a standard 19-inch rack panel or cabinet. Rack mount brackets must be assembled before mounting the unit in a rack. -
Page 25: Preliminary Check
mΩ/meter 13.2 33.5 52.8 Table 1 – Wire Gauge Rating Before connecting wires to the output terminals, turnOFF the power supply to avoid damage to the instrument and the device under test (DUT). For safety, load wires must have a wire gauge size large enough to prevent overheating when the power supply operates at maximum short circuit output current. -
Page 26: Warm-Up Time
2.4.1 Warm-up Time The MR series is fully operable upon switching the power ON. However, to reach the specified equipment accuracy, please allow the supply to warm up for at least 15 minutes. -
Page 27: Check Model And Firmware Version
Follow the steps below to check current output of the power supply. 1. Turn ON the power supply. The display will show the OFF 2. annunciator above the voltage display. Be sure that the output is disabled (the LED next to the button should not be lit when it is off). - Page 28 5. The UI firmware is shown above as 1.02. 6. Press once again and the firmware version will displayed. 7. The control firmware is shown above as 1.02. 8. Press once again and the firmware version will displayed. 9. The interface firmware is shown above as 1.01. 10.
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Page 29: Front Panel Operation
3 Front Panel Operation 3.1 Menu Options All settings and parameters can be configured from the built-in menu system of the power supply. To access the menu, press The menu system is divided into 5 sections and are organized as follows: CONFIGURATION Configures voltage setting limits. -
Page 30: Menu Tree
3.1.1 Menu Tree 3.1.2 How to Access the Menu Before using the instrument, it is important to be familiarized with its menu structure and learn how to view or change settings and parameters. Follow the steps below to guide you in selecting menu options. From the normal display, press to enter the menu. -
Page 31: Configure Voltage/Current Output
The selected item will be show. Use the keys tomove through the menu items. When there is a on the right side of the display, that means there are more menu items available to select from. Similarly, a will appear on the left side of the display when there are menu items to the left. -
Page 32: Setting Current
When output is ON, the user can use the rotary to adjust the voltage value when the output is in constant voltage (CV) mode. The output value will change simultaneously with the adjusted value. This is so called on-the-fly function that allows user to easily change the output value if the test is needed. - Page 33 Figure 3.1 – Local/Remote Sense Connection Diagram When local sense is selected, the positive lead (+) of the DC output is connected to the positive end (+) of the load and the negative lead (-) of the DC output is connected to the negative end (-) of the load.
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Page 34: Voltage/Current Measurement
Power ON the power supply, and then configure and enable the output. The setup should look like the figure above. DO NOT at any time disconnect the wires from the Vs+ and Vs- terminals to the DUT while output is enabled (ON). Doing so may damage the power supply and cause unstable output. -
Page 35: Config Menu
PFC not functioning correctly PFC ERROR ! POWER OFF ! Power supply is powering off OUTPUT SHORT CIRCUIT Output voltage drop too fast HW Fail BVbus Module hardware fail 3.4 CONFIG Menu All setup procedures and settings explained in this section can be accessed from the CONFIGURATION menu. -
Page 36: Protection Settings
The shaded area illustrated above is the settable range of the output voltage and current. Follow the steps below to configure the output limits: From the CONFIGURATION menu, select LIMIT, then press . The following screen will display: Use the keys to select the limit setting value of V max, V min, I max, and I min. -
Page 37: Configure Over Power Protection (Opp)
To clear the trip status, press once. 3.4.2.2 Configure Over Current Protection (OCP) The MR overcurrent protection utilizes a hardware comparator that quickly protects the instrument when the current presented at the output terminal exceeds the OCP setting current. Follow the steps below to set the OCP limit: 1. - Page 38 3. Press button two times until OPP is displayed, and press 4. Use numerical keys directly or use keys with rotary adjustment followed by to confirm the OPP value. 5. Press several times to exit the menu setting. When OPP protection is tripped during operation, the output will turn off and the following OPP status message will display: To clear the trip status, press once.
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Page 39: External Analog Control
Follow the steps below to set the CV to CC Protection: 1. Press button, select CONFIGURATION, then press 2. Press button one time until PROTECT is select and press . The display will then show OVP. 3. Press button four times until CC->CV is displayed and press 4. - Page 40 Figure 3.3 – DB25 Pinout Signal Description Open: Output is OFF Enable Short to ground: Output is ON Ground Ground Open: Front panel control Local/Analog Short to ground: Rear analog control Input 0-5 V / 0-5 kΩ or 0-10 V / 0-10 kΩ...
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Page 41: External Control Setting
Signal Description Ground High: Constant voltage CV/CC Low: Constant current Ground Open: No action Short to ground: Shutoff OFF: Ignore Shutoff LIVE: Output is OFF LATCH: Output is OFF High: Output is ON Power OK Low: Output is OFF Ground Ground Output 0-5 V / 0-10 V represents power Current Monitor... -
Page 42: Enable Control
External Mode Description Program the voltage output by connecting an EXT-V external DC voltage to Pin 9. Program the voltage output by connecting an EXT-R external resistor to Pin 9. 4. Press button to set Range. External Range Description The external voltage range or resistance range 10V/10K used to control the output voltage full scale is 0-10V /0-10kΩ. - Page 43 this pin will output a logic high (5V). When a fault occurs, this pin will output a logic low (0V). Fault conditions are defined as follows: 1. Overvoltage protection 2. Overcurrent protection 3. Overpower protection 4. CV to CC protection 5.
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Page 44: Voltage Program
3.5 Voltage Program 3.5.1 Voltage Mode Under voltage mode, the user may control the full scale output voltage value through Pin 9, by inputting a voltage level of 0-5 V (0-5 V / 0-5 kΩ mode) or 0-10 V (0-10 V / 0-10 kΩ mode) as shown below. Figure 3.4 –... - Page 45 Figure 3.7 - Analog Current Programming (Resistor Mode) 0-5 kΩ or 0-10 kΩ 3.5.2.4 Voltage Monitor This function is able to monitor the voltage output using Pin 11 and one of the ground pins (i.e. Pin 22), which can be connected to a digital voltage meter (DVM) or other voltage monitoring device, as shown below.
- Page 46 Then, press or sending the OUTPut:PROTection:CLEar command before pressing button again to enable the output. Note: Shut off can only occur when the power supply receives a trigger. Maintaining that pin constantly open will not trigger a shut off.
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Page 47: Parallel Operation
3.6 Parallel Operation Connection and Setup The MR power supplies can be connected in parallel to increase the power output capability as well as the output current. Up to *50 units of the same model can be connected for output up to 250 kW (max). - Page 48 Use the rotary knob to select the setting of OFF or ON and press Press button one time until Address is select and press Use the rotary knob to set the master or slave and press . Use the same procedure to set up MASTER, SLAVE 1, SLAVE 2,…,SLAVE 49 for the other power supplies.
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Page 49: Master Unit
Slave Unit When a power supply is set up to be a slave unit, it will wait for the master’s connection, as shown below. If the master unit has found the slave unit, the slave unit will be controlled by the master unit and the following will be displayed: In parallel mode, the slave unit is remote controlled by the master unit. - Page 50 While in parallel connection mode, the output voltage of each power supply should be set to equal value. If the voltage value of each unit is not the same, the higher output voltage will feed back to the lower voltage unit and damage its internal components.
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Page 51: Pv Simulation
3.7 PV Simulation Typically, a solar array is connected to an inverter, which converts the panel’s output from DC to AC. Due to varying environmental conditions and the nonlinear output of solar cells, many inverters use a maximum power point tracking mechanism to maximize the power generated from the solar panel. - Page 52 Once one of these I-V curves has been selected and set from the front panel, the power supply will operate in PV mode and output a voltage and current value according to the active I-V profile and load conditions. Different points on the I-V curve will be output in 1 ms intervals to test the inverter’s MPPT efficiency.
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Page 53: Power-On State
3.8 Power-On State The initial Power-On state of the power supply can be configured (voltage, current, output state) by following the steps below: 1. From the menu, press button 3 times to select POWER-ON STATE and press 2. The mode is showing on the display, press button. -
Page 54: Error Log
3. Select the desired option and press to save the change. 4. Press several times to exit the menu setting.. 3.10.2 Error Log Access the Error Log function from SYSTEM menu to view or clear error codes. 1. Error Code List Select Error Code List to view possible errors. -
Page 55: Restore Factory Default Settings
R002 Remote sense open R003 Remote sense fail Transformer of DC to DC over T001 temperature T002 MOSFET of buck over temperature MOSFET of Dummy Load over T003 temperature T004 PFC over temperature V001 H/W high voltage V101 AC Input voltage too low V102 AC Input voltage too high 2. - Page 56 1. From the SYSTEM menu, press button 3 times to select DEFAULT and press 2. The instrument will return to the normal display and all settings are now restored back to factory default. The table below lists some of the factory default settings. Item Parameter MR25080...
- Page 57 Item Parameter MR25080 MR50040 MR100020 Mode Program Program Number Mode PV Simulation. Curve Control Mode Mode Disable Disable Disable Power-on State Output State Beep Mode Limit VMAX 255.0 V 510.0 V 1020.0 V VMIN 0.0 V 0.0 V 0.0 V IMAX 81.6A 40.8 A...
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Page 58: Save/Recall Instrument Settings
Item Parameter MR25080 MR50040 MR100020 8.8.8.8 8.8.8.8 8.8.8.8 Hostname Model Model Model Conflict Number Table 2 - Factory Default Settings 3.11 Save/Recall Instrument Settings The instrument can save up to 10 voltage/current values for quick recall. 3.11.1 Save Settings 1. Set up output voltage and current settings that you want to save. 2. -
Page 59: Program Function
Note: When in Recall mode, users can recall settings from different locations without having to press additional keys each time. For example, you can press 1 to recall settings in location one, and then press 5 to immediately recall settings in location 5. 3.12 Program Function The MR has a Program feature that allows storing of programs into internal non- volatile memory and recalling and running them per configured parameters. - Page 60 Users also have the ability to utilize the REPEAT and NEXT options. The REPEAT option allows the user to execute the same program as many times, continuously, as needed. The NEXT option allows the user to select the next program to execute once the current program ends.
- Page 61 5. Press , at this point, the user may select how many times they wish the current program to repeat in the REPEAT field, by using the keypad or the rotary knob. 6. Press to select NEXT parameter and use the rotary knob to select a value of 0- 10.
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Page 62: Timer Function
When program mode is running. The current program (1-0 : 1), step (1-0 : 0) and repeat number (0/3 : 3 ) will also show on the display. Where p is the program number, step (1-0 : 0) is the step number, repeat number (0/3 : 0 ) is the present repeated number and repeat number (0/3 : 3 ) is the total repeat number. -
Page 63: Slew Rate Setting
3.14 Slew Rate Setting The power supply has the capability of controlling the output voltage and current slew rate. The timing can be configured for the rising/falling edge between voltage and current output transitions. Follow the steps below to configure the voltage or current slope. Press buttons to enter the slope menu. -
Page 64: Remote Operation
4.1 Interface Configuration 4.1.1 USB The MR series supports USBVCP and USBTMC functions on USB port. The USBVCP and USBTMC function only one on USB port at the same time. Follow the steps below to select USBVCP or USBTMC function. -
Page 65: Usbvcp
4.1.2 USBVCP: The USBVCP is a virtual COM port that can be used for remote communication. There are no settings in the menu system for USB configuration. To configure the USBVCP settings, refer to the RS232 settings below, as they are the same. 4.1.3 USBTMC: When USB port select USBTMC-compliant (refer to the USBVCP settings) and can be used for remote communication and control. -
Page 66: Gpib
commands are sent too fast to the power supply, the internal buffer may overrun and cause a communication error. Therefore, a delay between commands to let the power supply have enough time to process them is mandatory. All serial settings must match the settings configured on the PC in order for communication to link successfully. -
Page 67: Rs485
4.1.6 RS485 The MR series supports multiple power supplies (of the same model, up to *50) that can be connected together via RS485 and be controlled with a computer via USB (virtual COM) interface (Chain mode). If connecting more than 10 units, add a 120Ω... - Page 68 7. To change the parameter settings, use the rotary dial or keys. 8. Press to save each setting and the display will return to the RS485 menu. 9. Below lists the options that can be changed for each setting: 10. Baud rate: 9600, 19200, 38400, 57600 11.
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Page 69: Lan (Ethernet)
paralleling 5 to 10 power supplies. Refer to section 3.6 Parallel Operation for more details. True RS485 The RS485 port is true RS485 mode by default allowing it to be used as an I/O interface for remote control and programming when parallel and chain mode are disabled. The following table shows under what conditions true RS485 mode can be enabled: Condition True RS485 mode... -
Page 70: Web Server
Mode: DHCP, MANUAL IP Addr: 000.000.000.000 Subnet: 000.000.000.000 Gateway: 000.000.000.000 DNS: 000.000.000.000 4.1.8 Web server There is an embedded web server GUI that can access the power supply via LAN interface using a web browser. The GUI provides a simple way of setting voltage and current, as well as monitoring the output, using a web browser from a computer connected to the same local area network as the power supply. - Page 71 String, TCP/IP SOCKET Device Address String, USBTMC Device Address String, GPIB Device Address String, USB Port Function, RS232C setting, RS485 setting, Identification indicator function. Figure 4.3 – Web Server Home Page 4.1.8.2 LAN CONFIG page The LAN CONFIG page provides the Hostname, Description, IP Address, IP Address, Netmask, Gateway, DNS, password, Lan configuration, initialize, Restore Factory Settings.
- Page 72 The CONFIG page provides the protection settings (OVP, OCP, OPP, CV to CC, and CC to CV) and output related parameters such as voltage/current slope and limit settings. Figure 4.5 – Web Server Configuration Page 4.1.8.4 CONTROL page The CONTROL page provides the general control of the power supply such as output On/Off setting as well as the voltage and current setting.
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Page 73: Error/Event List
Socket connection is available for communication via LAN (Ethernet) interface. The instrument uses the TCP/IP protocol for communication. Users can use socket port 5025 to open a raw socket connection for sending remote commands. 4.2 Error/Event List SCPI interface can offer an error/event list that contains up to 20 errors/events. Users can read the errors/events through the “SYStem:ERRor?”... -
Page 74: Calibration
5 Calibration B&K Precision recommends a calibration interval of one year to ensure that the power supply meets specifications. This instrument features closed-case calibration. To perform the calibration, the following equipment is required: 5 ½ digit digital multimeter (DMM); B&K Precision 5491B or equivalent The following calibration instructions may be used by authorized technicians or calibration personnel only. -
Page 75: Voltage Calibration
EXT CURRENT CC FACTORY CAL. DATA RESTORE These options are only accessible in the calibration menu. The following calibration procedures assume the operator is in the CAL menu. 5.1 Voltage Calibration Follow the steps below to perform the voltage calibration: 1. -
Page 76: Current Calibration
5.2 Current Calibration Follow the steps below to perform the current calibration: 1. Connect the shunt resistance, DMM and Electronic load to the output of the power supply as shown in the figure below: Figure 5.2 – Current Calibration Diagram 2. -
Page 77: Ocp Calibration
2. Select the OVP parameter in the CAL menu and press . The following will be displayed: 3. Press to run the OVP calibration or press to abort. The OVP calibration is an automatic process that will take about 10 to 20 seconds. 4. -
Page 78: External Voltage Programming Calibration
Press to run the OCP calibration or press to abort. The OCP calibration is an automatic process that will take about 20 to 30 seconds. After the calibration is finished, the following message will be displayed: 5.5 External Voltage Programming Calibration Follow the steps below to perform the external voltage programming calibration: Connect the DMM to the external analog control terminals of DB25 connector (+ on the DMM to Pins 9 and 11, - on the DMM to Pin 22 (GND)) on the rear of the... -
Page 79: External Current Programming Calibration
5.6 External Current Programming Calibration Follow the steps below to perform the external current programming calibration: 1. Connect the DMM to the external analog control terminals of DB25 connector (+ on the DMM to Pins 10 and 24, - on the DMM to Pin 22(GND)) on the rear of the power supply, as shown in the figure below: Figure 5.5 –... -
Page 80: Cc Calibration Of External Current
The P: 1/4signifies there are 4 points to be calibrated and the current calibration point is 1. The four points use 0Ω, 2.5kΩ, 7.5kΩ, 10kΩ. 3. Press , the calibration will start, if the resister is not insert or not correct, the following will be displayed: 4. - Page 81 The P: 1/4signifies there are 4 points to be calibrated and the current calibration point is 1. The four points use 0Ω, 2.5kΩ, 7.5kΩ, 10kΩ. 6. Press , the calibration will start, if the resister is not insert or not correct, the following will be displayed: 7.
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Page 82: Troubleshooting Guide
6 Troubleshooting Guide Below are some frequently asked questions and answers. Please check if any apply to your power supply before contacting B&K Precision. -
Page 83: General
6.1 General Q: I cannot power up the power supply. Check that the power cord is securely connected to the AC input and there is live power from your electrical AC outlet. Verify that the AC power coming from the mains contains the correct voltage. The power supply can accept a specific range of AC input voltages. -
Page 84: Service Information
7 SERVICE INFORMATION Warranty Service: Please go to the support and service section on our website at www.bkprecision.com to obtain a 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 85 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 86 22820 Savi Ranch Parkway Yorba Linda, CA 92887 www.bkprecision.com © 2018 - 2019 B&K Precision Corp. V05262020...
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