Digital Multimeter HDM3055 Series Manual

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IP Mode enables DHCP or Static assignment of the instrument’s IP address. It also enables

configuration of network parameters based on the protocol (DHCP or Static) selected.

After enabling/disabling one or more services, press Apply. After that, you must cycle instrument

power for the new settings to take effect.

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GPIB Settings (optional)

GPIB Address

You can set GPIB address to a value from 2 to 30. After changing the address, cycle instrument

power for the change to take effect.

SCPI

You can remotely program the instrument with SCPI over the options below.

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Utility Menu - Test/Admin

Test/Admin provides access to self-test, calibration, and firmware update function:

Self-Test

Self-Test verifies proper instrument operation. See Self-Test Procedures for details, and always safely

disconnect inputs to the DMM terminals before running the Self Test.

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Calibrate

Calibrate accesses the instrument calibration procedure. See Calibration for details.

Firmware Update

Firmware Update updates the instrument firmware to a new version. See Firmware Update

for details.

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Utility Menu - System Setup

System Setup configures user preferences and sets the date and time.

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User Settings

User Settings specifies user preferences that control how you interact with the instrument. These

settings are stored in non-volatile memory and can be saved in a preferences (.prf) file.

Sounds

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Disables or enables the click heard when a front panel key or softkey is pressed.

Also enables or disables the audible tone (Beeper On or Off) associated with the following features:

l Limits – a measurement limit is exceeded (if limits are enabled)

l Probe Hold – the measured signal records a stable reading

l Diode – the forward bias voltage is between 0.3 and 0.8 V

l Continuity – a short is measured (less than or equal to 10 Ω)

l Error - an error is generated from the front panel or remote interface

This non-volatile setting appears in several different menus on the front panel. Turning the beeper on

or off in one menu affects all of the other menus and functions. For example, turning the beeper off for

probe hold, also turns the beeper off for limits, diode, continuity, and errors.

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Display Options

Display Options configures the display.

You can enable or disable the display, adjust the brightness (1 to 100%). If you turn off the display,

press any front panel key to turn it on again.

Date / Time

Date / Time sets the instrument's real-time clock, which always uses a 24-hour format (00:00:00 to 23:59:59).

There is no automatic setting of the date and time, such as to adjust for daylight savings time.

Use the front panel arrow keys to set the year, month, day, hour, and minute.

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Measurement Tutorial

Follow the suggestions in the sections below to achieve the greatest accuracy with Hantek HDM3000

Series multimeters.

Measurement Considerations

To achieve the greatest accuracy with the Hantek HDM3000 Series multimeters, you must eliminate

potential measurement errors. This chapter describes common errors and suggests ways to avoid them.

DC Measurement Considerations

Thermal EMF Errors

Thermoelectric voltages are the most common error source in low–level DC voltage measurements.

Thermoelectric voltages are generated by circuit connections using dissimilar metals at different temperatures.

Each metal–to–metal junction forms a thermocouple that generates a voltage proportional to the junction

temperature, as shown in the table below. You should minimize thermocouple voltages and temperature

variations in low–level voltage measurements. The best connections use copper–to–copper crimped

connections, as the DMM’s input terminals are a copper alloy.

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