Omega OMB-DAQ-2408 Series, User Manual

Page 1: ...omega com e mail info omega com For latest product manuals omegamanual info OMB DAQ 2408 SERIES Multifunction USB Data Acquisition Modules Extended Warranty Program SM Shop online at User sGuide...

Page 2: ...6 USA Canada only Tel 203 359 1660 Fax 203 359 7700 e mail info omega com For Other Locations Visit omega com worldwide omega com info omega com The information contained in this document is believed...

Page 3: ...pter 3 Functional Details 10 External components 10 USB connector 10 LEDs 10 Screw terminals 10 Signal connections 12 Input isolation 12 Analog TC input 13 Analog input mode 13 Gain queue 14 TC input...

Page 4: ...User s Guide 4 Analog input output calibration 27 Digital input output 27 Counter 28 Memory 29 Microcontroller 29 Power 29 USB specifications 29 Environmental 30 Mechanical 30 Screw terminal connector...

Page 5: ...ements present information to help you avoid injuring yourself and others damaging your hardware or losing your data bold text Bold text is used for the names of objects on a screen such as buttons te...

Page 6: ...h sampling rates up to 1 kS s Each channel is software configurable as SE or DIFF For each DIFF channel pair you lose one SE channel Analog input ranges of 10 V 5 V 2 5 V 1 25 V 0 625 V 0 312 V 0 156...

Page 7: ...s User s Guide Introducing the OMB DAQ 2408 Series 7 OMB DAQ 2408 Series block diagram OMB DAQ 2408 Series functions are illustrated in the block diagram shown here Figure 1 OMB DAQ 2408 Series functi...

Page 8: ...are Please read this booklet completely before installing any software or hardware Unpacking As with any electronic device take care while handling to avoid damage from static electricity Before remov...

Page 9: ...on If the LED is not on the device is not powered or did not initialize Figure 2 on page 10 shows the location of the STATUS LED Caution Do not disconnect any device from the USB bus while the compute...

Page 10: ...s components USB connector The USB connector provides 5 V power and communication No external power supply is required LEDs OMB DAQ 2408 Series devices have two LEDs STATUS and ACTIVITY The Status LED...

Page 11: ...ht DIFF CH0H CH0L to CH7H CH7L analog input connections Eight digital I O connections DI00 to DI07 Two analog output connections AOUT0 AOUT1 OMB DAQ 2408 2AO only Two counter inputs CTR0 CTR1 One powe...

Page 12: ...isolated ground as shown in the figure below This ground is physically and electrically separate from the ground used by the circuit connected to the system bus interface Isolation provides a barrier...

Page 13: ...mall signals in the presence of large common mode voltages Isolation increases the ability of the measurement system to reject common mode voltages The common mode voltage is the signal that is common...

Page 14: ...nel gain queue feature to configure a list of channels modes and gains for each scan The settings are stored in a channel gain queue list that is written to local memory on the device The channel gain...

Page 15: ...scharge ESD protection for each of the TC inputs However before handling TC sensors follow standard ESD practices and discharge any accumulated ESD charge Once the TC sensor is connected to the device...

Page 16: ...e data and issues such as reference noise become less important At higher data rates higher frequency noise sources are not averaged out and begin to be troublesome These noise sources include the noi...

Page 17: ...input Digital input voltage ranges of up to 0 to 15 V are permitted with thresholds of 0 6 V low and 2 2 V high Each DIO channel is an open drain which when used as an output is capable of sinking up...

Page 18: ...e surface then carefully remove the top section of the case to expose the circuit board 5 Configure jumper J6 for either pull up pins 1 2 or pull down pins 2 3 The jumper is configured by default for...

Page 19: ...a slight voltage impedance shift to digital lines in the on state as various lines change between the on off states Figure 13 Digital I O external resistor configuration Counter input The CTR0 and CT...

Page 20: ...OMB DAQ 2408 Series User s Guide Functional Details 20 Mechanical drawings Figure 14 OMB DAQ 2408 Series device circuit board top and enclosure dimensions...

Page 21: ...ifferential you essentially lose two single ended channels Input isolation 500 VDC min between field wiring and USB interface Channel configurations Temperature sensor input software selectable to mat...

Page 22: ...avoid settling time and accuracy errors Table 2 Channel configurations Channel Category Specification CxH CxL Thermocouple 8 differential channels CxH CxL Voltage 16 individually configurable channel...

Page 23: ...510 C 2 930 Co 089 250 C 2 165 C 1 468 C 1768 C 3 187 C 2 597 C B 250 C 5 489 C 3 956 C 0 14 700 C 2 283 C 1 743 C 1820 C 2 202 C 1 842 C E 200 C 2 413 C 1 352 C 0 017 0 C 1 069 C 0 551 C 1000 C 1 575...

Page 24: ...33 14 76 8 19 6 94 4 75 4 69 4 49 3 70 3 34 2 56 2 45 0 15625 V 13 28 16 84 7 47 6 61 5 70 4 48 4 48 4 24 2 66 3 07 2 29 0 078125 V 13 47 15 02 9 17 6 88 4 28 4 16 4 00 3 57 2 28 2 13 2 40 Table 8 RM...

Page 25: ...0016 0 0011 0 0011 0 0007 0 0007 0 0005 0 0005 0 0004 0 0005 0 0003 0 3125 V 0 0031 0 0031 0 0020 0 0017 0 0015 0 0012 0 0010 0 0010 0 0012 0 0009 0 0009 0 15625 V 0 0056 0 0062 0 0048 0 0037 0 0032 0...

Page 26: ...76 0 71 0 36 0 18 15 73 53 58 48 40 65 25 25 6 27 3 85 3 23 1 64 0 66 0 33 0 17 16 68 93 54 82 38 11 23 67 5 87 3 61 3 03 1 54 0 62 0 31 0 16 Analog voltage output OMB DAQ 2408 2AO only Unused AOUTx o...

Page 27: ...ax Long term stability 30 ppm 1000 hours AO calibration procedure OMB DAQ 2408 2AO only The analog output pin is internally routed to the analog input pin AOUTx readback OMB DAQ 2408 2AO only Each AOU...

Page 28: ...150 mA max continuous for all eight channels DMOS transistor on resistance drain to source 4 Note 3 DGND pins are recommended for use with digital input and digital output pins The DGND and AGND pins...

Page 29: ...ith USB interface non isolated One high performance 16 bit RISC microcontroller for measurements isolated Power Table 23 Power specifications Parameter Conditions Specification Supply current Note 8 Q...

Page 30: ...re range 40 C to 85 C max Humidity 0 to 90 non condensing max Mechanical Table 26 Mechanical specifications Parameter Specifications Dimensions L x W x H 127 89 9 35 6 mm 5 00 x 3 53 x 1 40 in User co...

Page 31: ...round 31 CH5H Channel 5 HI 10 CH3H Channel 3 HI 32 AGND Analog ground 11 CH3L Channel 3 LO 33 CH4L Channel 4 LO 12 AGND Analog ground 34 CH4H Channel 4 HI 13 DGND Digital ground 35 AGND Analog ground...

Page 32: ...10 CH3 Channel 3 32 AGND Analog ground 11 CH11 Channel 11 33 CH12 Channel 12 12 AGND Analog ground 34 CH4 Channel 4 13 DGND Digital ground 35 AGND Analog ground 14 DIO0 Digital input output 36 AOUT1...

Page 33: ...y OMEGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limite...

Page 34: ...ity Indicators Turbine Paddlewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators Pumps Industrial...