Measurement Computing USB-1608G, User Manual

Page 1: ...USB 1608G Series Multifunction DAQ Devices USB 1608G USB 1608GX USB 1608GX 2AO Document Revision 2 April 2012 Copyright 2012 User s Guide...

Page 2: ...eep it These warranties are in lieu of all other warranties expressed or implied including any implied warranty of merchantability or fitness for a particular application The remedies provided herein...

Page 3: ...re 9 Calibrating 10 Self calibration 10 Factory calibration 10 Programming and developing applications 10 Firmware updates 10 Chapter 3 Functional Details 11 Analog input modes 11 Software paced 11 Ha...

Page 4: ...tput calibration 22 Digital input output 22 External trigger 22 External clock input output 23 Counter 23 Timer 24 Memory 24 Power 24 USB 24 Environmental 25 Mechanical 25 Screw terminal connector 25...

Page 5: ...ourself 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 text boxes and check boxes italic text Italic text is use...

Page 6: ...transfer rates on the USB 1 1 versions of the protocol low speed and full speed Each USB 1608G Series device provides the following features 16 single ended SE or eight differential DIFF analog input...

Page 7: ...G Series User s Guide Introducing the USB 1608G Series 7 Functional block diagram USB 1608G Series functions are illustrated in the block diagram shown here Figure 1 USB 1608G Series functional block...

Page 8: ...ng the software Unpacking As with any electronic device take care while handling to avoid damage from static electricity Before removing the USB 1608G Series from its packaging ground yourself using a...

Page 9: ...you need to install the software package you plan to use before you install the hardware For operation on a Windows operating system we recommend that you run Windows Update to update your operating...

Page 10: ...ogramming and developing applications You can program and develop applications for the USB 1608G Series device using MCC DAQ software and DAQFlex software OEM users can create a custom driver for use...

Page 11: ...ther a software command or with an external hardware trigger event The maximum sampling rate in hardware paced mode from one to 16 channels is 500 kS s aggregate for the USB 1608GX and USB 1608GX 2AO...

Page 12: ...Figure 3 shows the location of each LED Screw terminals The USB 1608G Series device screw terminals provide the following connections 16 SE CH0 to CH15 or eight DIFF CH0H CH0L to CH7H CH7L analog inpu...

Page 13: ...mode pinout USB 1608GX 2AO only NC no connection on the USB 1608G and USB 1608GX Do not connect anything to pins labeled NC Figure 5 DIFF mode pinout USB 1608GX 2AO only NC no connection on the USB 1...

Page 14: ...voltage source When connecting DIFF voltage inputs to a floating voltage source make sure the DIFF input channel has a DC return path to ground To create this path connect a resistor from each low cha...

Page 15: ...output range is fixed at 10 V The outputs default to 0 V when the host computer is shut down or suspended or when a reset command is issued to the device External clock I O USB 1608G Series devices pr...

Page 16: ...W1 for either pull up or pull down The jumper is configured by default for pull down Figure 8 shows the location of the jumper on the board Figure 8 W1 jumper location Figure 9 shows the jumper confi...

Page 17: ...Hz The timer output parameters are software selectable Figure 10 shows the timer output schematic Figure 10 Timer output schematic Power output The 5V terminal can output up to 10 mA maximum You can u...

Page 18: ...USB 1608G Series User s Guide Functional Details 18 Mechanical drawings Figure 11 USB 1608G Series device circuit board top and enclosure dimensions...

Page 19: ...GX 2AO 870 kHz Input capacitance 60 pf Max working voltage signal common mode 10 2 V max relative to AGND Common mode rejection ratio fIN 60 Hz all input ranges 86 dB Crosstalk Adjacent differential m...

Page 20: ...performance specifications Range Counts LSBrms 10 V 6 0 91 5 V 6 0 91 2 V 7 1 06 1 V 9 1 36 Settling time Settling time is defined as the accuracy that can be expected after one conversion when switch...

Page 21: ...50 mV Output noise 30 Vrms Sample clock source Internal D A clock or external D A clock AOCKI pin Output update rate 500 kHz number of channels in scan Settling time To rated accuracy 10 V step 40 s S...

Page 22: ...t Pull up configuration The port has 47 k resistors configurable as pull ups or pull downs default via internal jumper W1 Digital I O transfer rate system paced 33 to 8000 port reads writes or single...

Page 23: ...pull down to ground Schmitt trigger hysteresis 0 4 V to 1 2 V Input high voltage 2 2 V min 5 5 V absolute max Input low voltage 1 5 V max 0 5 V absolute min 0 V recommended min Output high voltage 4 4...

Page 24: ...emory 32 KB 28 KB firmware storage 4 KB calibration user data Power Table 17 Power specifications Parameter Condition Specification Supply current Note 3 Quiescent current USB 1608G 230 mA USB 1608GX...

Page 25: ...annel 1 LO 32 CH6H Channel 6 HI 6 AGND Analog ground 33 AGND Analog ground 7 CH2H Channel 2 HI 34 CH5L Channel 5 LO 8 CH2L Channel 2 LO 35 CH5H Channel 5 HI 9 AGND Analog ground 36 AGND Analog ground...

Page 26: ...AGND Analog ground 39 AGND Analog ground 13 AOUT0 Note 5 Analog output 0 40 AGND Analog ground 14 AGND Analog ground 41 AGND Analog ground 15 AOUT1 Note 5 Analog output 1 42 5V 5V output 16 AGND Analo...

Page 27: ...etic Field immunity To maintain compliance to the standards of this declaration the following conditions must be met The host computer peripheral equipment power sources and expansion hardware must be...

Page 28: ...Measurement Computing Corporation 10 Commerce Way Suite 1008 Norton Massachusetts 02766 508 946 5100 Fax 508 946 9500 E mail info mccdaq com www mccdaq com...