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Blog Details
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What is the resolution and measurement speed of a Handheld Digital Multimeter?

What is the resolution and measurement speed of a Handheld Digital Multimeter?

2025-07-31

Resolution and measurement speed are core performance indicators for handheld digital multimeters, as detailed below:

1. Resolution Characteristics
Display Digits and Counts
  • Mainstream models range from 3.5 digits (2,000 counts) to 4.5 digits (40,000 counts). High-end models, such as the TH2822D, achieve a D/Q resolution of 0.0001 with 40,000-word primary parameter readouts.
  • Some Keysight handheld meters support 5.5 digit resolution, suitable for precision electronic measurements.
Influencing Factors
  • Detector pixel size and signal processing algorithms directly affect the ability to resolve tiny signals, similar to how pixel size affects inherent blur in industrial CT.
  • The auto-ranging function optimizes resolution across the dynamic range.
2. Measurement Speed
Normal Mode
  • Basic models typically measure 2-3 times/second, while the TH2822D can reach 4 times/second in AC testing (3 times/second in DCR mode). High-speed models (such as some Keysight products) support 100,000 readings/second, but there's a trade-off between accuracy and speed.
Acceleration Technology
  • The fast autoranging design and intelligent LCR auto-selection function shorten test cycles.
  • The trend chart display function improves readability of high-speed measurements by displaying graphical data.
III. Typical Application Matching Recommendations
Requirement Scenario Resolution Requirement Speed Requirement Recommended Configuration
Laboratory Precision Measurements ≥4½ digits (0.01%) Medium Speed (10Hz) Keysight High-End Handheld Meters
Field Rapid Diagnosis 3½ digits (0.5%) High Speed (≥4 readings/second) LCR Bridge Meters such as the TH2822D

By appropriately selecting the number of display digits and test mode, you can balance resolution and speed requirements. For dynamic signal measurements, it's recommended to enable averaging (e.g., 1999 averages) to improve the signal-to-noise ratio.

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Blog Details
Created with Pixso. Home Created with Pixso. Blog Created with Pixso.

What is the resolution and measurement speed of a Handheld Digital Multimeter?

What is the resolution and measurement speed of a Handheld Digital Multimeter?

Resolution and measurement speed are core performance indicators for handheld digital multimeters, as detailed below:

1. Resolution Characteristics
Display Digits and Counts
  • Mainstream models range from 3.5 digits (2,000 counts) to 4.5 digits (40,000 counts). High-end models, such as the TH2822D, achieve a D/Q resolution of 0.0001 with 40,000-word primary parameter readouts.
  • Some Keysight handheld meters support 5.5 digit resolution, suitable for precision electronic measurements.
Influencing Factors
  • Detector pixel size and signal processing algorithms directly affect the ability to resolve tiny signals, similar to how pixel size affects inherent blur in industrial CT.
  • The auto-ranging function optimizes resolution across the dynamic range.
2. Measurement Speed
Normal Mode
  • Basic models typically measure 2-3 times/second, while the TH2822D can reach 4 times/second in AC testing (3 times/second in DCR mode). High-speed models (such as some Keysight products) support 100,000 readings/second, but there's a trade-off between accuracy and speed.
Acceleration Technology
  • The fast autoranging design and intelligent LCR auto-selection function shorten test cycles.
  • The trend chart display function improves readability of high-speed measurements by displaying graphical data.
III. Typical Application Matching Recommendations
Requirement Scenario Resolution Requirement Speed Requirement Recommended Configuration
Laboratory Precision Measurements ≥4½ digits (0.01%) Medium Speed (10Hz) Keysight High-End Handheld Meters
Field Rapid Diagnosis 3½ digits (0.5%) High Speed (≥4 readings/second) LCR Bridge Meters such as the TH2822D

By appropriately selecting the number of display digits and test mode, you can balance resolution and speed requirements. For dynamic signal measurements, it's recommended to enable averaging (e.g., 1999 averages) to improve the signal-to-noise ratio.