Delta DVP04AD-SL, Инструкция

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
Adjust A/D Conversion Curve
Users can adjust the conversion curves according to the actual needs by changing the
Offset value (CR#28 ~ CR#31) and Gain value (CR#34 ~ CR#37).
Gain: The corresponding voltage/current input value when the digital output value =
16,000.
Offset: The corresponding voltage/current input value when the digital output value = 0.
 Equation for voltage input Mode0: 0.3125mV = 20V/64,000 = 10V/32,000
 
Offset Gain Offset
V
V X
Y







   
32000
10
16000
) (
) (
Y=Digital output, X=Voltage input

Equation for voltage input Mode4 / Mode5 / Mode6: 0.15625mV = 10V/64,000 =
5V/32,000
 
Offset Gain Offset
V
V X
Y







   
32000
5
16000
) (
) (
Y=Digital output, X=Voltage input
 Equation for current input Mode1 / Mode2: 0.625 μ A = 40mA/64,000 = 20mA/32,000
 
Offset Gain Offset
mA
mA X
Y







   
32000
20
16000
) (
) (
Y=Digital output, X=Current input

Equation for current input Mode3: 0.5 μ A = 16mA/32,000
Adopt the Equation of current input Mode3, substitute Gain for 19200 (12mA) and
Offset for 6400 (4mA)
 
6400 19200 6400 32000
20
16000







   
) (
) (
mA
mA X
Y
Y=Digital output, X=Current input
 Mode 0:  Mode 1:
Voltage input
+32000
+16000
-16000
10V
-32000
-10V
5V 0
Gain Offset
Digital
output
+32384
-32384
Current input
+32000
+16000
-16000
20mA
-32000
-20mA
10mA 0
Gain Offset
Digital
output
+32384
-32384
Mode 0 of CR#2 ~ CR#5 -10V ~ +10V
，
Gain = 5V (16,000)
，
Offset = 0V (0)
Mode 1 of CR#2 ~ CR#5 20mA ~ +20mA
，
Gain = 10mA (16,000)
，
Offset = 0V (0)
Range of digital conversion -32,000 ~ +32,000
Max./Min. range of digital
conversion
-32,384 ~ +32,384