Related Manuals for Omega Engineering OME-DB-889D
Summary of Contents for Omega Engineering OME-DB-889D
- Page 1 User’ s Guide Shop online at www.omega.com e-mail: info@omega.com OME-DB-889D 16-Channel Analog Multiplexer Board...
- Page 2 OMEGAnet Online Service ® www.omega.com Servicing North America: USA: One Omega Drive, P.O. Box 4047 Stamford CT 06907-0047 ISO 9001 Certified TEL: (203) 359-1660 e-mail: info@omega.com Canada: 976 Bergar Laval (Quebec) H7L 5A1, Canada TEL: (514) 856-6928 e-mail: info@omega.ca For immediate technical or application assistance: USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA Customer Service: 1-800-622-2378 / 1-800-622-BEST...
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Page 3: Table Of Contents
OME-DB-889D MULTIPLEXER BOARD ...2 1. FUNCTION DESCRIPTION ...2 1.1 F ...2 EATURES 1.2 A ...2 PPLICATIONS 1.3 S ...2 PECIFICATION 2. INSTALLING...4 2.1 L ...4 AYOUT 2.2 J ...5 UMPER SETUP 2.2.1 JP0 ~ JP15 Analog Input R/C Filter ...5 2.2.2 JP16 Analog Output Channel Jumper ...5... -
Page 4: Ome-Db-889D Multiplexer Board
OME-DB-889D Multiplexer Board 1. Function Description The OME-DB-889D is an expansion multiplexer / amplifier board for use with OME-A-82X, OME-PCI-1800 series. Each OME-DB-889D multiplexes 16 differential analog input channels into one analog input of the DAS board. The high grade instrumentation provides software programmable gains of 0.5, 1, 5, 10, 50, 100, 500 and 1000. - Page 5 Gain Common Mode 1000 Power requirement : +5V@120mA Dimension :114mm X 204mm Operating temperature : 0~60°C Storage temperature : -20~80°C Humidity : 5% to 90% non condensing OME-DB-889D User’s Manual Non linearity %of Rejection 99dB ±0.0004 99dB ±0.0004 114dB ±0.0004 99dB ±0.0004...
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Page 6: Installing
External Voltage Input Jumper /Connector Name Connect to A/D connector of OME-A-82x series Cascaded to another OME-DB-889D Connect to D/O connector of OME-A-82x series Cascaded to another OME-DB-889D External +5V power input CN6, CN8 Analog input channel 0~ channel 15... -
Page 7: Jumper Setup
The OME-DB-889D supports 10 separate jumper to select output channel, This feature permits up to 10 OME-DB-889D’s be connected to a 10 channel analog input card. Place the jumper in the output channel according to the channel of the analog input card selected for that OME-DB-889D board. -
Page 8: Jp19 Internal / External Power Selection
The OME-A-82X series multi-function card offers +5V power from the 37 pin connector , The OME-DB-889D can be directly from the PC I/O bus by connecting the OME-A-82Xseries multi-function card. From PC’s +5V Power Default Setting 2.2.4 JP18 Local / Remote Gain control... - Page 9 When the JP18 is set to “R”, it means Remote Gain Control is selected and the gain is controlled by the digital signal of connector CN3 bit D4, D5, D6. The bit pattern and related gain is illustrated as: OME-DB-889D User’s Manual Remote Gain Control Local Gain Control...
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Page 10: Pin Assignment
The CN1, CN2 D-sub connector is analog output link to analog input connector of OME-A-82X series multi-function card & cascaded another OME-DB-889D. The CN3, CN4 is digital control multiplex & gain setting link to digital output connector of OME-A-82x series multi-function card . - Page 11 DOn : DO0~DO3 Multiplexer control bit. DO4~DO6 Gain control bit GND : Digital Ground +5V : PC’s +5V +12V PC’s +12V OME-DB-889D User’s Manual...
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Page 12: Analog Input & Gain Setting
The DB-990D provides 15 channel differential analog inputs. Input channel selection is controlled by the 4 bit TTL/CMOS digital data (CN3 DO0~DO3) issued by the OME-A-82x series multi-function card. DO 3 DO 2 OME-DB-889D User’s Manual DO 1 DO 0 Analog input channel... -
Page 13: Gain Setting
Software Setting : JP18 should be place on “R” Switch Setting : JP18 should be place on “L” Software Setting (Remote control) DO 6 DO 5 DO 4 OME-DB-889D User’s Manual Switch Setting (Local Control) SW1-3 SW1-2 SW1-1 Gain 1000... -
Page 14: The Thermocouple Input
3.3. The Thermocouple Input The OME-DB-889D can accept thermocouple sensor to measure temperature. The OME-DB-889D should be set to different gain value if use different thermocouple type. If you are usingOME-A-82XPGL series multi-function bard to linked OME-DB-889D you have got the gain as:... -
Page 15: Voltage - To - Temperature Conversion
2.06132E+13 Note: 1. The thermocouple range of this table is this equation limited. 2. Other detail data please reference thermocouple data book. OME-DB-889D User’s Manual TYPE K TYPE R 0°C to 1370°C 0°C to 1000°C 0°C to 1750°C -160°C to 400°C 0.226584602... -
Page 16: Cjc Output
CJC reference. If the CJC is not required, Place the JP17 in the position “X”. CJC has output on connector CN7. Using a voltage meter measures CN7 which exists a voltage related to the OME-DB-889D board temperature. The CJC voltage transfers to temperature with formula: V: Voltage of CN7... -
Page 17: Signal Connection
4 Signal Connection The OME-DB-889D can multiplex up to 16 channel differential inputs. Input channel selection is controlled by a CN3 D4~ D6 digital output by OME-A-82x series multi-function card. 4.1 Floating Signal Connection The OME-DB-889D has only differential input channels, each input channel should be two signal wires. -
Page 18: Non-Floating Signal Source
4.2 Non-Floating Signal Source Some the signal source has one side connect to a local ground. The signal ground with OME-DB-889D ground will not be same voltage level. The input should be show as: Common mode Signal Source Common mode signal input OME-DB-889D User’s Manual... -
Page 19: Cascading Ome-Db-889D
A/D Channel 1 OME-DB-889D #2 A/D Channel 2 OME-DB-889D #3 A/D Channel 3 OME-DB-889D #4 A/D Channel n OME-DB-889D #n A/D Channel 9 OME-DB-889D #10 Note: Each OME-DB-889D JP17 place on “X” OME-DB-889D User’s Manual 20 Pin Flat Cable OME-DB-889D #2 JP16... -
Page 20: Open Thermocouple Detection
4.4 Open Thermocouple Detection The OME-DB-889D provides open thermocouple detection through a resistor circuitry. These resisters are normally not connected. The user can find on the back of the board has two solder gaps for each input channel. If you short the solder gaps, the open thermocouple detection is enabled. -
Page 21: Block Diagram
Dip Switch OME-A-82X D/O control signal CN1: connect to OME-A-82x series multi-function card CN2: connect to CN1 of another OME-DB-889D CN3: connect to OME-A-82x series digital output CN4: connect to CN3 of another OME-DB-889D AMP: programmable gain amplifier (PGA) VR1: PGA off-set adjustment. -
Page 22: Programming
Turn off power of computer. Plug in OME-A-822PGL then connect 37 pin cable & 20 pin flat cables to CN1 and CN3 of OME-DB-889D. Setup OME-DB-889D (Ref. Jumper setting section of OME-DB-889D. The example program uses default setup ) Connect your signal wiring. -
Page 23: Example Program
=============*/ A822_AD_SetChGainMode(0,0,1); /* Setup OME-A-822 A/D channel 0, Gain = 1 , Polling mode A822_DO(0x0010); /* Send D/O data to OME-DB-889D , Channel 0, Gain=1 */ delay(10); /* delay about 43u sec . Ref. Page 3 Settling time */ data1=A822_AD_PollingVar();... - Page 24 A822_DO(0x0021); /* Send D/O data to OME-DB-889D , Channel 1, Gain=10 */ delay(10); /* delay about 43u sec , Ref. Page 3 Setting time*/ data2=A822_AD_PollingVar(); /* Reading OME-A-822 A/D data */ vol2=(float)((data2-2048)*0.5/2048); printf(“OME-DB-889D channel 1= %6.4f V\n”,vol2); OME-DB-889D User’s Manual...
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Page 25: Calibration
6. Calibration The OME-DB-889D is calibrated to its best of operation. For environment subjected to large vibrations, recalibration is recommended. Before calibrating the OME-DB-889D, user should consider having the following available: One 6 digital voltage meter One temperature meter One OME-A-82x series multifunction card 6.1 Calibration VR Description... - Page 26 OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.
- Page 27 Where Do I Find Everything I Need for Process Measurement and Control? OMEGA…Of Course! Shop online at www.omega.com TEMPERATURE Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies Wire: Thermocouple, RTD & Thermistor Calibrators & Ice Point References Recorders, Controllers & Process Monitors Infrared Pyrometers PRESSURE, STRAIN AND FORCE Transducers &...