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General| Brand | B&K |
|---|---|
| Model | 281 |
| Category | Multimeter |
| Language | English |
Detailed specifications for DC voltage measurement ranges and accuracy.
Detailed specifications for AC voltage measurement ranges and accuracy.
Detailed specifications for DC current measurement ranges and accuracy.
Detailed specifications for AC current measurement ranges and accuracy.
Detailed specifications for resistance measurement ranges and accuracy.
Details on circuit protection mechanisms for different measurement functions.
Specifies the operational temperature limits for the instrument.
Information regarding the instrument's power source.
Details the electrical power consumed by the instrument.
Lists the accessories provided with the instrument.
Physical dimensions of the multimeter.
The total weight of the multimeter.
Selects measurement type and powers the unit on/off.
Selects the desired measurement range for the selected function.
Jack used for measuring current on the 1 Ampere range.
The common connection point for instrument inputs.
The "hot" input jack for connecting test leads.
The third digit displayed on the numerical readout.
The second digit displayed on the numerical readout.
The first digit, indicates overrange or blank.
Handle for carrying and positioning the instrument for viewing.
Test probe for all measurements, includes selectable resistor.
Table correlating settings to digital display readings and overrange indications.
Step-by-step guide to turn the multimeter on safely.
How to correctly measure DC voltages using the multimeter.
How to correctly measure AC voltages using the multimeter.
How to correctly measure DC currents using the multimeter.
Crucial safety precautions for measuring DC current.
How to correctly measure AC currents using the multimeter.
How to correctly measure resistance using the multimeter.
Crucial safety precautions for measuring resistance.
Important considerations for using the 10 Ohm resistance range.
Explanation of how analog signals are converted to digital pulses.
Describes the role of the digital counter in displaying readings.
Explanation of how the display shows measurements and overrange.
How the attenuator circuit handles higher voltage inputs.
Process for converting AC signals to DC for measurement.
How shunts convert current to voltage for measurement.
How a constant current source measures resistance.
A visual representation of the multimeter's internal electronic components.
Conditions under which instrument calibration is required.
Recommended accuracy for reference sources used in calibration.
Steps for removing instrument covers to access internal components.
Procedure for removing the end panel and handle for access.
Steps for correctly reattaching the instrument handle.
Detailed instructions for calibrating various functions and ranges.
Illustration of the instrument's disassembly for calibration.
Exploded view showing the handle assembly components.
Diagram identifying the location of internal calibration potentiometers.
Guidance on consulting the maintenance section for adjustments.
Procedure for returning faulty parts under warranty.
Steps for troubleshooting and returning the product for service.
Information on finding authorized local service distributors.
Detailed conditions and limitations of the product warranty.
List of all resistors used in the Model 281.
List of all potentiometers used in the Model 281.
List of all capacitors used in the Model 281.
List of all diodes and transistors used in the Model 281.
List of all integrated circuits used in the Model 281.
List of coils, transformers, switches, and readouts.
List of other miscellaneous parts and accessories.
Important notes and clarifications related to the schematic diagram.
Definitions of abbreviations used in the schematic diagram.
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