20-101-0504 Rabbit Semiconductor, 20-101-0504 Datasheet - Page 88
20-101-0504
Manufacturer Part Number
20-101-0504
Description
ACCY CABLE&MOUNTING HDWR SR9050
Manufacturer
Rabbit Semiconductor
Datasheet
1.101-0437.pdf
(184 pages)
Specifications of 20-101-0504
Accessory Type
Smart Star Cable
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
SR9500
Other names
101-0504
101-0504
101-504
101-504
101-0504
101-504
101-504
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8.2 User Interface
Figure 33 shows the circuit used to condition the analog signal before it goes to the A/D
converter chip. Depending on the model of A/D Converter Card you have, it is designed to
handle analog inputs of 0 V to 10 V, -10 V to +10 V, or 4–20 mA. The two different volt-
age ranges are handled with different gain resistors, R
: 23.7 kΩ for the SR9300 and
g
12.1 kΩ for the SR9310. The input shown in Figure 33 is configured differently for the
SR9320, which handles analog inputs of 4–20 mA.
Input
W
R
BOTTOM
W
Figure 33. Analog Input Amplifier Circuit
The TLC2543 A/D converter chip on the A/D Converter Card uses synchronous Serial Port
B and Timer A5 on the Rabbit 2000 to do the A/D conversions.
Figure 34 shows the complete pinout for the user interface on header J2. Note that pin 1 is
indicated by a small arrow on the ribbon cable connector.
Figure 34. A/D Converter Card User Interface Pinout
88
Smart Star A/D Converter Cards (SR9300)
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