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OME-DB-889D MULTIPLEXER BOARD .........................................................................................2
1. FUNCTION DESCRIPTION............................................................................................................2
1.1 FEATURES........................................................................................................................................2
1.2 APPLICATIONS .................................................................................................................................2
1.3 SPECIFICATION.................................................................................................................................2
2. INSTALLING.....................................................................................................................................4
2.1 LAYOUT...........................................................................................................................................4
2.2 JUMPER SETUP..................................................................................................................................5
2.2.1 JP0 ~ JP15 Analog Input R/C Filter........................................................................................5
2.2.2 JP16 Analog Output Channel Jumper .....................................................................................5
2.2.3 JP19 Internal / External Power selection ................................................................................6
2.2.4 JP18 Local / Remote Gain control ........................................................................................6
2.3 PIN ASSIGNMENT .............................................................................................................................8
3 ANALOG INPUT & GAIN SETTING............................................................................................10
3.1 INPUT CHANNEL SELECTION..........................................................................................................10
3.2 GAIN SETTING................................................................................................................................11
3.3. THE THERMOCOUPLE INPUT .........................................................................................................12
3.3.1 Voltage - TO - Temperature Conversion................................................................................13
3.3 CJC OUTPUT..................................................................................................................................14
4 SIGNAL CONNECTION ..............................................................................................................15
4.1 FLOATING SIGNAL CONNECTION ...................................................................................................15
4.2 NON-FLOATING SIGNAL SOURCE...................................................................................................16
4.3 CASCADING OME-DB-889D.........................................................................................................17
4.4 OPEN THERMOCOUPLE DETECTION................................................................................................18
4.5BLOCK DIAGRAM ...........................................................................................................................19
5 PROGRAMMING ............................................................................................................................20
5.1 USING OME-A-822PGL ...............................................................................................................20
5.3 EXAMPLE PROGRAM ......................................................................................................................21
6. CALIBRATION ...............................................................................................................................23
6.1 CALIBRATION VR DESCRIPTION ....................................................................................................23
6.2 CALIBRATION STEPS......................................................................................................................23
OME-DB-889D User’s Manual
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