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Summary of Contents for Hioki MR8875
- Page 1 Measurement Guide MR8875 MEMORY HiCORDER March 2014 Revised edition 2 MR8875A983-02 14-03H...
- Page 3 Introduction Introduction Thank you for purchasing the HIOKI Model MR8875 Memory HiCorder. This Measurement Guide includes basic examples of how the instrument is used. Please read it carefully before using the instrument. The Waveform screen allows you to view measurement data, while the Settings screen allows you to configure various instrument settings.
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Page 4: Left Side
Screen Organization and Operational Overview Screen Organization and Operational Overview Part names UNIT 3 UNIT 4 Analog input terminals Input modules (BNC terminals) (up to 4 can be installed) Connect optional connection cords, clamps, and other input UNIT 1 UNIT 2 sources here. - Page 5 Screen Organization and Operational Overview Screen organization Waveform screen You can change various settings on the Wave- form screen’s settings windows. Switches between the Waveform screen and the Settings screen. [Status] screen [Channel] screen Configures the measurement method. You can Configures input channels.
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Page 6: System Screen
Screen Organization and Operational Overview [System] screen [File] screen Configures the system environment, external Displays files on media and configures settings I/O, and communications. such as the method used to save data. Screen operation Touch Touch the screen with your fin- Touch the screen with your finger ger and then remove your finger. -
Page 7: Measurement Preparations
Screen Organization and Operational Overview 1. Measurement Preparations Connecting the instrument Before using the instrument, be sure to read the “Operating Precautions” and “Pre-Measurement Inspection” sections of the instruction manual. (Example: Connect the MR8901 Analog Unit connection cord.) Connect the measurement cables to the input module. -
Page 8: Performing Zero Adjustment
Screen Organization and Operational Overview Performing zero adjustment This procedure compensates for input module differences and sets the instrument’s reference potential to 0 V. (MR8901, MR8902 and MR8905 only) Zero adjustment can be performed for all input modules at once. For more precise measurement, allow a warm-up period of about 30 minutes to elapse after turn- Open the screen. - Page 9 Screen Organization and Operational Overview 2. Configuring Settings before Measurement Before starting measurement, it is necessary to configure measurement conditions, input channels, triggers, and other settings. To save data automatically after starting measurement, it is necessary to configure data save settings before measurement. Measurement and save methods There are two methods for saving data, as explained below: you can save data automatically after starting measurement, or you can save data manually (with the...
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Page 10: Setting Measurement Conditions
Screen Organization and Operational Overview Setting measurement conditions Settings can be configured on setting windows on the Waveform screen or on the Settings screen. Open the screen. Waveform screen ([Status] window) [Waveform Display] [Status] [Basic] [Setting Display] [Status] Select the desired set- ting from the... -
Page 11: Configuring Input Channels
Screen Organization and Operational Overview Configuring input channels This explanation applies when using the MR8901 Analog Unit. Waveform screen ([Channel] window) Open the screen. [Waveform Display] [Setting Display] [Channel] [Analog] Select the channel to configure. Set the [Range(/div)]. (Configure other settings as necessary.) Setting to [Display]... - Page 12 Screen Organization and Operational Overview Configuring triggers (to assign specific conditions for recording) Open the screen Waveform screen ([Trigger] window) [Waveform Display] [Setting Display] [Trigger] [General] [Trigger] [On] and set the trigger conditions. [Trigger Mode] • Single Data is recorded once when the trigger conditions are satisfied.
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Page 13: Configuring Auto Save
Screen Organization and Operational Overview Configuring auto save Waveform screen ([Status] window) Open the screen [Waveform Display] [Status] [Auto Save] [Setting Display] [Status] [Auto Save Settings] [Auto Save] [On] and set the media and filename. [Waveform] [On]. -
Page 14: Analyzing Measurement Results
Screen Organization and Operational Overview 4. Analyzing Measurement Results This section provides a basic example of how measurement results are analyzed. For more information, see the instrument’s instruction manual. Scrolling waveforms Waveforms can be scrolled by either using the Arrow window or tapping the scroll bar. Scrolling with the Arrow window Scroll toward older data Scroll toward newer data... - Page 15 Screen Organization and Operational Overview Waveform screen ([Channel] window) Magnifying and compressing the vertical axis (voltage axis) Open the screen [Waveform Display] [Setting Display] [Channel] [Analog] [Display] [Mag.] Select from the list. Viewing the value at the cursor and selecting a range Open the screen.
- Page 16 Screen Organization and Operational Overview If the display is hard to decipher due to overlapping waveforms You can either change the waveform zoom setting and zero position or assign waveforms to sheets or graphs. This section describes how to improve waveform visibility by changing the waveform zoom setting and zero position.
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Page 17: Performing Calculations
Screen Organization and Operational Overview Performing calculations There are 24 types of numerical calculations available, up to 8 of which can be performed at the same time. There are two methods for performing calculations: • Calculating while measuring (The numerical calculation must be configured before measurement.) •... - Page 18 Viewing the Contents of Media Viewing the Contents of Media You can check data that has been saved with the instrument using the File screen. Open the screen. [Setting Display] [File] [Operation] Tap the media you wish to view to select it. (The selected media will be displayed in reverse video.) Tap the media again.
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Page 19: Folder And File Structure
Viewing the Contents of Media Folder and file structure When data is saved, the folder “HIOKI_MR8875” will be created on the media, and folders will be saved inside that folder. HIOKI_MR8875 CONFIG Settings data Folder for storing settings data DATA000 to 999 Waveform data Folder for storing waveform data (Once the number of files in a folder exceeds 1,000, a new folder will be automatically created with an... - Page 20 Convenient Functionality Convenient Functionality When you don’t know the time axis When you wish to record evidence or or range passage of abnormal phenomena “Auto-ranging” “Pre-trigger” and “Post-trigger” Automatically sets the time axis range, voltage axis Allows you to record the waveform prior to the trig- range, and zero position.
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Page 21: Preparing For Measurement
Slope point. Preparing for measurement You will need: Connect to the Connect to CH1-1. • MR8875 Memory HiCorder measurement target • MR8901 Analog Unit (in this example, an • Oscillator oscillator). Connect to a •... -
Page 22: Save The Data
• If you wish to view the waveform using the instrument, set the [Type] setting to [Waveform(Binary)]. If you wish to view the waveform with spreadsheet software, set to [Waveform(Text)]. Data saved as text cannot be loaded by the MR8875. Starting and stopping measurement Trigger level Press the START key. - Page 23 Reference Reference Screen The MR8875 uses an SVGA (800 x 600) LCD. The waveform dis- play area uses 625 horizontal dots and 500 vertical dots of the screen. 20 div The waveform display range is 25 horizontal divisions by 20 ver- tical divisions, with each frame (division) taking up 25 horizontal dots and 25 vertical dots on the display.
- Page 24 Reference MEMO...
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