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91年11月28日
ES51977
3 3/4 AUTO EASY
Operation Mode
(1) Measurement Description
Voltage Measurement
Resistive divider is automatically changed to provide in range reading
for 399.9mV to 3999V full scale reading. The following table shows
the various full scale range.
Range
Full scale
Resistive Ratio
VR1
VR2
VR3
VR4
VR5
399.9 mV
3.999 V
39.99 V
399.9 V
3999 V
1
, 1/1
R2/(R1+R2) , 1/10
R3/(R1+R3) , 1/100
R4/(R1+R4) , 1/1000
R5/(R1+R5) , 1/10000
Resistance Measurement
Resistive divider is automatically changed to provide the proper range.
The following table shows the various full scale range.
Range
Full Scale
Reference Resistor
OR1
399.9 Ω
OR2
3.999 KΩ
OR3
39.99 KΩ
OR4
399.9 KΩ
OR5
3.999 MΩ
OR6
39.99 MΩ
R6(100Ω)
R5(1KΩ)
R4(10KΩ)
R1||R3(=100KΩ)
R1||R2(=1MΩ)
R1(10MΩ)
Current Measurement
In the current measurement mode , there are three range selections :
Mode
Range Selection Full Scale
Automatic Mode 1
uA
399.9 uA
3999 uA
Automatic Mode 2
mA
39.99 mA
399.9 mA
Manual Mode
A
39.99 A
When the mode changes among (uA, mA, A), the original AC/DC
state will keep.
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