NJU9214 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJU9214

4•3/4 DIGIT SINGLE CHIP DIGITAL MULTIMETER LSI

Japan Radio Corporation  

NJU9214

(7-5) Bargraph display

The bargraph displays 10 times speed comparing with numeric display. However it is not displayed in frequency,

revolution and capacitance measurement mode

1. BP-

: Displayed when negative signal is input.

2. BP0

: Displayed when the digital display is more than about " 00400 ".

3. BP1 to 40

: BP1 is displayed when the digital display is more than about

" 01000 ", then 1 segment display increases at every 1,000 counts.

If overflow occurs, all of BP0 to BP40 are displayed.

4. The figures of " 0, 10, 20, 30, 40 " under the bargraph is displayed expecting for frequency, tacho

and capacitance measurement mode.

(7-6) Over-range Display

When the over-range is occurred, the display becomes " 40000 " and all digit blinks.

However " 0000 " is displayed in frequency measurement mode, " 60000 " is displayed in revolution

measurement mode, " 4000 " is displayed in capacitance measurement mode, and also every digit blinks in

these modes.

In relative measurement mode, but it is not concerned with the display value. All of digits blink when

over-range occurs by the absolute input value

(7-7) Polarity Display

In cases of the “ 0 “ display value, AC voltage, AC current, resistance ( Ω ), diode ( ), capacitance ( C ),

frequency ( f ), tacho ( rpm ) and continuity test ( ) measurement mode, " – " mark is not displayed.

However in relative measurement mode, any measurement modes display " – " .

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