BK Precision 1685B Programming Manual
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BK Precision 1685B Programming Manual

Switching dc power supplies
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Model: 1685B, 1687B, 1688B, 1900B, 1901B, 1902B
Switching DC Power Supplies
PROGRAMMING MANUAL

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Summary of Contents for BK Precision 1685B

  • Page 1 Model: 1685B, 1687B, 1688B, 1900B, 1901B, 1902B Switching DC Power Supplies PROGRAMMING MANUAL...

  • Page 2: Table Of Contents

    Table of Contents USB Interface Connection ................2 USB (Virtual COM) Configuration ..................2 PC Software ....................2 General Functions and Display ..................2 External Timed Program ....................5 Internal Preset Memory ....................6 Data Log ..........................7 Settings ..........................8 Power Supply Calibration ....................

  • Page 3: Usb Interface Connection

    USB Interface Connection Users can remotely control the power supply via PC over the USB interface. Upon installation of the USB driver, the PC can control the instrument over virtual COM. Connecting Instrument to PC 1. Download the USB drivers from www.bkprecision.com . 2.
  • Page 4 Figure 2.1 - PC Software General Functions and Display 1. Display panel Shows real-time information of power supply’s output and setting voltage and current. 2. Main configuration and data log display panel Use to change general setting of program and display data log. 3.
  • Page 5 Figure 2.2 - Display Panel Figure 2.3 - Output Configuration Panel You can directly type the desired output voltage and output current and then click “Set” button to set the value or use the slide bar to adjust the value.

  • Page 6: External Timed Program

    External Timed Program External Timed Program is completely controlled by the PC. The PC counts the step time and changes the specified voltage and current levels of the power supply. Figure 2.4 - External Timed Program External Timed Program Procedure 1.

  • Page 7: Internal Preset Memory

    Internal Preset Memory The Internal Preset Memory tab allows you to define the power supply’s presets remotely. Figure 2.5 - Internal Preset Memory Internal Preset Memory Procedure 1. Select Internal Preset Memory tab to switch to the Internal Preset Memory function. 2.

  • Page 8: Data Log

    Data Log The Data Log window can be used to view real-time or stored output voltage, current, and power data. Move left and right along the graphed data by adjusting the “Move” slide bar. Zoom In/Out of the graph by adjusting the “Zoom”...

  • Page 9: Settings

    Settings Use this tab to configure general settings. The software will automatically detect power supply model and COM USB Interface port used. If not found, please recheck COM port or USB driver installation as mentioned in “ Connection ” section. Figure 2.7 - Settings Configuration Data Log Sampling Time: You can select your desired data log sampling time from 1 second and up.

  • Page 10: Power Supply Calibration

    Power Supply Calibration Note: Software calibration only available for firmware 3.1 or above. 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: ...
  • Page 11 To enter the Calibration function, input the password (default is “password”). After log-in, click the “Change Password” button to enter a new password. To recover to default factory shipped calibration, click on the “Recovery Default” button. Click the “Start calibration” button to run the calibration process. Figure 2.10 –...

  • Page 12: Command Set

    9600, Data bits: 8, Parity: none, Stop bits: 1. If you are using HyperTerminal, make sure to check your ASCII setup to not append line feeds. Command line format: COMMAND<parameter1><parameter2>…[CR] Current value will have one decimal place for models 1687B, 1688B, 1900B, 1901B, and 1902B, and two decimal places for Model 1685B. Command code & Function Example...
  • Page 13 Command code & Function Example Return value Input command: Get display voltage, Input command: GETD[CR] current, and status GETD[CR] reading from power Return value: supply Return value: [voltage][current][stat 030201450 us][CR] [voltage] = 0000-XXXX OK[CR] [current] = 0000-XXXX [status] = 0|1 (0=CV, Indicates voltage reading is 3.02 1=CC) V and current reading is 1.45 A.
  • Page 14 Command code & Function Example Return value Input command: Set upper current limit Input command: SOCP{<current>}[CR] of power supply SOCP108[CR] Return value: <current> = 000-XXX Return value: OK[CR] OK[CR] Sets upper current limit to 10.8 Input command: Get upper voltage Input command: GOVP[CR] limit of power supply...
  • Page 15 22820 Savi Ranch Parkway Yorba Linda, CA 92887 www.bkprecision.com © 2016 B&K Precision Corp. V022316...

This manual is also suitable for:

1687b1688b1900b1901b1902b

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