NJU9214 NJR Corporation, NJU9214 Datasheet - Page 13

• Manufacturer Part Number: NJU9214
• Description: 4·3/4 Digit Single Chip Digital Multimeter Lsi
• Manufacturer: NJR Corporation

Latching Relay Driving.
( 4 ) Attached functions ( Functions with KI1 to KI5 are available by only lock type switches. )
However, the bargraph displays the absolute value, not the relative value.
the relative mode is released.
About 10ms pulse width signal shown in below table is outputted from RD1 to RD4. This pulse controls the
ACmA, ACA, ACV, FRQ, rpm
ACmA, ACA, ACV, FRQ, rpm
However, A/D conversion is operating even though in the HOLD status, therefore the buzzer sounds at the
over-range and the continuity test.
the value of difference between the present and the just before value is displayed.
When the switch connecting to terminal KI3 is pressed, the mode is circulated as follows ;
When the switch connecting to terminal KI4 is pressed, all of display data is stored into the memory.
and [MEM] mark blinks during this mode.
(4-1) Data Hold : HOLD
(4-2) Relative Measurement : REL
(4-3) Min. / Max. Hold : MIN / MAX
(4-4) Data Memory : MEN
And the over-range also occurs from the absolute value of input. When the KI2 is pressed over than 1 second,
In case of the auto-range, the range is held at the just before range.
The hold or release of all display data is performed alternately by KI1 terminal input.
In the auto-range operation, changing of range is available.
The relative measurement is selected when the switch connecting to KI2 terminal is pressed. In this mode,
The bargraph always displays the input value.
The stored data can be read out and displayed on LCD by pressing the READ key connecting to terminal KI5,
This mode is released by pressing the READ key connecting to terminal KI5.
DC400mA, ADP
DC400mV, ADP
DCmA, ACmA
DCmA, ACmA
,
,
AC400mV
AC400mV
FUNCTION · RANGE
ACA
ACA
,
,
, CAP
, CAP
,
,
MIN Value Hold → MAX Value Hold → HOLD Release
Reset
Set
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW1
SW2
SW3
SW4
SW5
SW6
SW7
Relay
Reset
Set
RD1
RD2
RD3
NJU9214
RD4