Hioki 8841 - Page 426

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19.1 Logic Inputs
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Range
Digital input
(Threshold value)
Contact input
(Detecting resistance value)
1.4 V 1.4 V±0.3 V
More than 1.5 kΩ
Less than 500 Ω
opened (Output L)
shorted (Output H)
2.5 V 2.5 V±0.4 V
More than 3.5 kΩ
Less than 1.5 kΩ
opened (Output L)
shorted (Output H)
4.0 V 4.0 V±0.5 V
More than 25 kΩ
Less than 8 kΩ
opened (Output L)
shorted (Output H)
The number of channels 4 （insulated）
Input voltage range LOW HIGH
Input resistance 30 kΩ min 100 kΩ min
Sensitivity (Output: H) 0to10VAC
±(0 to 15) VDC
0to30VAC
±(0 to 43) VDC
Sensitivity
(Output: L)
60 to 150 VAC
±(20 to 150) VDC
170 to 250 VAC
±(70 to 250) VDC
Response time （ ）
（ ）
Less than 1 ms
Less than 3 ms
with 100 VDC
Less than 1 ms
Less than 3 ms
with 200 VDC
Maximum input voltage 150 Vrms 250 Vrms
Maximum rated voltage to earth 250 Vrms
Dielectric strength 2.3 kVAC /1 min （between unit and channels）
Insulation resistance More than 100 MΩ / 500 VDC
（between unit and channels）
93219320
9320 LOGIC PROBE
・When measuring digital signals
Set the input selector to DIGITAL when measuring digital signals. In this case, use
IC clip lead. Connect the alligator clip to the circuit ground. Use the threshold
value selector to select the threshold value.
・When measuring contact signals
Set the input selector to CONTACT when measuring contact signals. In this case,
use alligator clip lead. When these lines are shorted, H level is applied to the
contact input.
9321 LOGIC PROBE
・Set the input selector in accordance with the measured voltage.
LOW range: Turning 100 VAC and 24 VDC, etc. ON/OFF
HIGH range: Turning 200 VAC, etc. ON/OFF
・Since the inputs are bipolar, polarity should be disregarded.
・Because the inputs are insulated, each channel is connectable to independent
potential points.
This unit detects absolute values so that negative DC voltages can be
applied. The above values for AC voltages are those obtained with sine wave
signals of 50/60 Hz.
The 9306 and 9307 (no longer manufactured) can be also used.