General-tools-and-instruments DSM8921 Manual de usuario descargar pdf (Pagina 11)

SELECTING AUTOMATIC AND

MANUAL RANGING

The meter features six measurement

ranges in 10dB steps:

30~80dB, 40~90dB, 50~100dB,

60~110dB, 70~120dB, 80~130dB.

When you turn the meter on, it will be in

automatic range mode and a small AUTO

will be displayed on the left side of the

screen (See Fig.11) . In this mode, the

meter will adjust the measurement range

automatically for accuracy. The two digit

number to the left of the bar graph on

the LCD will show the low end of the

current range.

You can also set the range manually. This

is helpful when you know the measurement

range in advance. The meter will be able to

take readings more quickly, because the

unit does not need to first establish the

range before displaying the measurement.

BACKLIT KEY (8922 only)

Offer a light for approximate 5 seconds

to make it easier to see the display in

the dark.

+10

SPLSPL

Fig.11

+10

SPLSPL

Fig.12

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