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Chapter 4 Measurement Options
This chapter provides description of the front panel features of TH1942. For those measurement options
accessible only by a remote interface, refer to Chapter 5 and 6. This chapter is organized as follows:
Measurement Configuration
–
Describes Ranging, Relative readings, Digits of Resolution
and Measurement rate
Triggering operations
–
Explains trigger sources
MAX and MIN operations
–
Records the minimum and the maximum input signals
Limit operations
–
Defines how to set reading limits
System Operations
–
Provides details on Beep setup, Baud rate setup, Terminal character
setup and key sound setup.
4.1 Measurement configuration
The following paragraphs discuss configuring multimeter for making measurement.
4.1.1 Range
You can let the multimeter automatically select the range using auto ranging or you can select a fixed
range using manual ranging. Auto ranging is convenient because the multimeter automatically selects
the appropriate range for each measurement. However, you can use manual ranging for faster
measurements since the multimeter doesn‘t have to determine which ranging to use for each
measurement. The multimeter returns back to auto ranging when power has been off or after a remote
interface reset.
Maximum readings
The full scale readings for every range on each function are 5% over range except for the 1000VDC,
750VAC and diode test ranges.
Manual ranging
To select a range, simply press
or
key. The instrument changes one range per key press.
The selected range is displayed for a moment.
If the instrument displays the ―
OVL.D
‖ message on a particular range, select a higher range until an
on-range reading is displayed. Use the lowest range possible without causing an overflow to ensure best
accuracy and resolution.
Auto ranging
To enable auto ranging, press
key. The
AUTO
annunciator turns on when auto ranging is selected.
While auto ranging is selected, the instrument automatically chooses the best range to measure the
applied signal. However, auto ranging should not be used when optimum speed is required.
