USB-1608G Series User's Guide
Contents
1. Range 2 pS settling accuracy 4 uS settling accuracy 9 pS settling accuracy 96 FSR 96 FSR 96 FSR 10 V 0 1251 0 0031 0 0015 5 V 0 0687 0 0031 0 0015 2 V 0 0687 0 0031 0 0015 1 V 0 0687 0 0031 0 0015 USB 1608G Table 5 Input settling time specifications in uS typical Range 4 pS settling accuracy 6 uS settling accuracy 10 uS settling accuracy FSR FSR FSR 10 V 0 0061 0 0031 0 0015 5 V 0 0061 0 0031 0 0015 2 V 0 0061 0 0031 0 0015 1 V 0 0061 0 0031 0 0015 20 USB 1608G Series User s Guide Specifications Analog output USB 1608GX 2A0 only Table 6 Analog output specifications Parameter Condition Specification Number of channels 2 Resolution 16 bits Output ranges Calibrated 10 V Output transient Host computer is reset powered on suspended Duration 500 us or a reset command is issued to the device Amplitude 2 V p p Powered off Duration 10 ms Amplitude 7 V peak Differential 0 25 LSB typ non linearity 1 LSB max Output current AOUTx pins 3 5 mA max Output short circuit AOUTX connected to AGND Unlimited duration protection Output coupling DC Power on and DACS cleared to zero scale 0 V 50 mV reset state Output noise 30 uVrms 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 To2. approximation ADC resolution 16 bits Number of channels 8 differential 16 single ended Software selectable Input voltage range 10 V 5 V 42 V 1 V Software selectable per channel Absolute max input voltage CHx relative to AGND 325 V max power on 5 V max power off Input impedance GQ power on 820 Q power off Input bias current 10 nA Input bandwidth All input ranges small signal 3 dB USB 1608G 750 kHz USB 1608GX 870 kHz USB 1608GX 2A0 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 86 dB ranges Crosstalk Adjacent differential mode 75 dB channels DC to 100 kHz Input coupling DC Sampling rate USB 1608G 0 0149 Hz to 250 kHz USB 1608GX 0 0149 Hz to 500 kHz USB 1608GX 2A0 0 0149 Hz to 500 kHz Software selectable Trigger source TRIG see External trigger on page 22 Sample clock source Internal A D clock or external A D clock AICKI pin Burst mode USB 1608G 4 us USB 1608GX 2 us USB 1608GX 2A0 2 us Software selectable using the internal A D clock always enabled when using the external clock AICKI pin Throughput Software paced 33 to 4000 S s typ system dependent Hardware paced USB 1608G 250 kS s max USB 1608GX 500 kS s max USB 1608GX 2A0 500 kS s max Channel gain queu
3. information Chapter 1 Introducing the USB 1608G Series coommoonnnncnncinnnncccnnrenrcr rr 6 Functional block diagram aie adem O ON 7 Chapter 2 Installing a USB 1608G Series Device eese eeeeeeeees rr 8 What comes with your ShipMent ooooccnnccnoccnnncononononononnonnncn nono nocn nono conocio nn neon teee E EEEE EE ESSEE EEE EE EEEE EEES 8 Hard WA eret Rn On DUI daa e RE 8 BATH E 8 Unpack a ET 8 Installing the SOMWaATE ssie n e a a a odi a e ttes Es DA QFIOK inicios isa Universal Library and InstaCal Installing the hard Ware rr thee a POE P she HER WERE FU Calibracion EE Self calibrati n uie eee e e OR A esas ee e eot eet ao aa Factory Calibration 5 5 oerte rose ee e eerie et er A Ote e ed eda te MEC pe ARE Programming and developing applications essent nennen rene enne ene 10 Firmware Updates ies er rne pe e E e Re MR EEG pU 10 Chapter 3 Functional Details P 11 Analog Input modes ent ced bed Me etn Ne EPA E EA E E bed eee A e tanda e vete iE 11 Software paced ueniet RR eie enne eee DRE 11 Hardware paced A nean dH NOI ER READER TER 11 BUrst MOde sa ive EP External components USB connector TELS 625s Rd Screwterminals 5er ce secre ss C EROR BERN Pe Rt uere Fee eue eret Lee bi A tre ve p ehe etur pere vera Signal connections o n ncmo e pin Drei DR UR GO PORE IO
4. 4 DIO6 Digital input output 51 CTR1 Counter 1 25 DIO7 Digital input output 52 CTRO Counter 0 26 GND Digital ground 53 TMR Timer output 27 NC No connect 54 GND Digital ground 25 USB 1608G Series User s Guide Specifications Note 4 USB 1608GX 2AO only NC no connection on the USB 1608G and USB 1608GX Single ended mode pinout Table 23 16 channel single ended mode pinout Pin Signal name Pin description Pin Signal name Pin description 1 CHO Channel 0 28 CH15 Channel 15 2 CH8 Channel 8 29 CH7 Channel 7 3 AGND Analog ground 30 AGND Analog ground 4 CH1 Channel 1 31 CH14 Channel 14 5 CH9 Channel 9 32 CH6 Channel 6 6 AGND Analog ground 33 AGND Analog ground 7 CH2 Channel 2 34 CH13 Channel 13 8 CH10 Channel 10 35 CH5 Channel 5 9 AGND Analog ground 36 AGND Analog ground 10 CH3 Channel 3 37 CH12 Channel 12 11 CH11 Channel 11 38 CH4 Channel 4 12 AGND Analog ground 39 AGND Analog ground 13 AOUTO 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 Analog ground 43 AGND Analog ground empty empty 17 GND Digital ground 44 GND Digital ground 18 DIOO Digital input output 45 AICKI Al clock input 19 DIO1 Digital input output 46 AICKO Al clock output 20 DIO2 Digital input output 47 AOCKI Note 5 AO clock inp
5. ER Te TEE ER En pani Analog iAiput z O E Analog output USB 1608GX 2A0 only iranerne anA OE nennen AEA anno none on none nn nana AEEA EEE REE 15 Externalclock VO vec see p a EORR ERR EE Monts 15 Dijital VO m A aaa 15 Trigger ptas eee p E ERO Pneterea eee etd E de b em e ea nt bes pee 16 eimi TEE IE 17 Timer UEP UIE Seg rea URINE RTT TENA UR GRE REINO RENE eS cacas 17 Power output e 17 Ground o5 side esce te E er A a e dd Mee Malone al tance 17 Mechanical drawings repete BOR BERUF EP ERU re ope RR ree DER REP RP Pee R 18 Chapter 4 Specifica OS ia Amnaloe1npUt rore rr PD EU PR Ee E E E EE E A as ACCULAGCY APE LEER Analog input DC voltage measurement accuracy INOISG perfOFmalice A sioe eu i sese tee et eese ose eei er aeterne pee de sees e v Meet ee epar E re e eben Settling tme 2n eoe a n e o Reo UI la USB 1608G Series User s Guide Analog output USB 1608GX 2A0 only nennen enne nene teen neee trennen reete enne enne en 21 Analog input output calabratOn esis iet rie de eee diede de e ee dob ede 22 Digital ynput oUtpUt acre en eise in E E E etd en retenue 22 Idae 22 External clock input output 4 2 eot coe ii 23 C OUD IeTz Side D USED NERA et eines PIDEN UE RUE RH 23 Titriet in eo n EOEPRRHRECO REI n p E DEP Ra aE ees 24 Mem Y OR ERREUR REIP ERRORI ATO RR RE T
6. QFlex software OEM users can create a custom driver for use with the message based firmware to interface with the device Refer to the Quick Start Guide for information about the Universal Library and InstaCal Refer to the DAOQFlex Software User s Guide for information about DAQFlex software Refer to the Message based Firmware Specification for information about the message based firmware Firmware updates Your DAQ device contains firmware that can be updated in the field if required Firmware is available for download at www mccdaq com firmware aspx We recommend that you check this page periodically to see if an update to your device firmware is available 10 Chapter 3 Functional Details Analog input modes USB 1608G Series devices can acquire analog input data in two basic modes software paced and hardware paced Software paced You can acquire one analog sample at a time in software paced mode You initiate the A D conversion with a software command The analog value is converted to digital data and returned to the computer Repeat this procedure until you have the total number of samples that you want The sample rate in software paced mode is system dependent and can range from 33 S s to 4000 S s Hardware paced You can acquire data from up to 16 channels in hardware paced mode The analog data is continuously acquired converted to digital values and written into the FIFO buffer on the device until y
7. R VI EE e eter 24 PO WOE is O OOO 24 USB ti ranas haria EE 24 Environmental iei p E RR ERE CREER RU REUS OR reo RU Ra eric 25 Mechanical tinas 25 SCLEW terminal COMME celica H 25 Differential mode pinouts e A p tener ORE 25 Singl ended mode pimo t perna e HERE nr ROI pn e E E RU En e ete pa e pi 26 Declaration of Conformity nace lead iia name rp cote 27 Preface About this User s Guide What you will learn from this user s guide This user s guide describes the Measurement Computing USB 1608G Series data acquisition devices and lists device specifications Conventions in this user s guide For more information about Text presented in a box signifies additional information and helpful hints related to the subject matter you are reading Caution Shaded caution statements 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 text boxes and check boxes italic text Italic text is used for the names of manuals and help topic titles and to emphasize a word or phrase Where to find more information Additional information about USB 1608G Series hardware is available on our website at www mccdaq com You can also contact Measurement Computing Corporation by phone fax or email with speci
8. USB 1608G Series Multifunction DAQ Devices USB 1608G USB 1608GX USB 1608GX 2AO User s Guide Document Revision 2 Vi FA MEASUREMENT April 2012 4 W x 9449 COMPUTING Copyright 2012 Your new Measurement Computing product comes with a fantastic extra Management committed to your satisfaction Thank you for choosing a Measurement Computing product and congratulations You own the finest and you can now enjoy the protection of the most comprehensive warranties and unmatched phone tech support It s the embodiment of our mission To provide data acquisition hardware and software that will save time and save money Simple installations minimize the time between setting up your system and actually making measurements We offer quick and simple access to outstanding live FREE technical support to help integrate MCC products into a DAQ system Limited Lifetime Warranty Most MCC products are covered by a limited lifetime warranty against defects in materials or workmanship for the life of the product to the original purchaser unless otherwise noted Any products found to be defective in material or workmanship will be repaired replaced with same or similar device or refunded at MCC s discretion For specific information please refer to the terms and conditions of sale Harsh Environment Program Any Measurement Computing product that is damaged due to misuse or any reason may be eligible for replacement with the same or
9. e Up to 16 elements Software selectable range for each channel Warm up time 15 minutes min 19 USB 1608G Series User s Guide Specifications Accuracy Analog input DC voltage measurement accuracy Table 2 DC Accuracy components and specifications All values are Absolute Gain Offset accuracy at temperature temperature Gain error Offset error INL error Full Scale coefficient coefficient Range of reading uV 96 of range uV 96 reading C pV C 10 V 0 024 915 0 0076 4075 0 0014 47 5 V 0 024 686 0 0076 2266 0 0014 24 2 V 0 024 336 0 0076 968 0 0014 10 1 V 0 024 245 0 0076 561 0 0014 5 Noise performance For the peak to peak noise distribution test a differential input channel is connected to AGND at the input terminal block and 32 000 samples are acquired at the maximum rate available at each setting Table 3 Noise performance specifications Range Counts LSBrms 10 V 6 0 91 5 V 6 0 91 2 V 7 1 06 1V 9 1 36 Settling time Settling time is defined as the accuracy that can be expected after one conversion when switching from a channel with a DC input at one extreme of full scale to another channel with a DC input at the other extreme of full scale Both input channels are configured for the same input range USB 1608GX 2A0 USB 1608GX Table 4 Input settling time specifications in uS typical
10. ecifications Parameter Specification Connector type Screw terminal Wire gauge range 16 AWG to 30 AWG Differential mode pinout Table 22 8 channel differential mode pinout Pin Signal name Pin description Pin Signal name Pin description 1 CHOH Channel 0 HI 28 CH7L Channel 7 LO 2 CHOL Channel 0 LO 29 CH7H Channel 7 HI 3 AGND Analog ground 30 AGND Analog ground 4 CH1H Channel 1 HI 31 CH6L Channel 6 LO 5 CH1L Channel 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 10 CH3H Channel 3 HI 37 CH4L Channel 4 LO 11 CHSL Channel 3 LO 38 CH4H Channel 4 HI 12 AGND Analog ground 39 AGND Analog ground 13 AOUTO Note 4 Analog output 0 40 AGND Analog ground 14 AGND Analog ground 41 AGND Analog ground 15 AOUT1 Note 4 Analog output 1 42 45V 5V output 16 AGND Analog ground 43 AGND Analog ground empty empty 17 GND Digital ground 44 GND Digital ground 18 DIOO Digital input output 45 AICKI Al clock input 19 DIO1 Digital input output 46 AICKO Al clock output 20 DIO2 Digital input output 47 AOCKI Note 4 AO clock input 21 DIO3 Digital input output 48 AOCKO Note 4 AO clock output 22 DIO4 Digital input output 49 TRIG Trigger input 23 DIO5 Digital input output 50 GND Digital ground 2
11. fic questions Phone 508 946 5100 and follow the instructions for reaching Tech Support Fax 508 946 9500 to the attention of Tech Support Email techsupport mccdaq com Chapter 1 Introducing the USB 1608G Series The USB 1608G Series includes the following devices USB 1608G USB 1608GX USB 1608GX 2AO These devices are USB 2 0 high speed devices that are supported under the following operating systems Microsoft Windows 7 Vista XP 32 bit or 64 bit Macintosh 32 bit or 64 bit Linux 32 bit or 64 bit The USB 1608G Series is compatible with both USB 1 1 and USB 2 0 ports The speed of the device may be limited when using a USB 1 1 port due to the difference in 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 channels Eight individually configurable digital I O channels Two counter channels 32 bit that count TTL pulses One timer output channel 32 bit Screw terminals for field wiring connections The USB 1608GX 2A0 also provides two analog output channels You can pace each channel at rates of up to 500 kS s per second You can pace both channels simultaneously at rates of up to 250 kS s USB 1608G Series devices are powered by the 5 volt USB supply from your computer and require no external power USB 1608G Series U
12. hould be kept as small as possible to avoid settling time and accuracy errors Figure 6 shows DIFF channels 0 3 connected to a ground path resistor T za e o A A M ial L ooooooooooooooo CHOH CHOL AGND CH1H CH1L AGND CH2H CH2L AGND CH3H CH3L AGND AOUTO AGND AOUT1 AGND 100ko E 100 kQ 100kQ 5 Figure 6 DIFF connections with ground path resistor Channel Gain queue The USB 1608G Series channel gain queue feature allows you 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 queue list contains one or more channel numbers modes and range settings You can configure up to 16 elements The channels can be listed in any order and can include duplicate channels for sampling at different ranges 14 USB 1608G Series User s Guide Functional Details An example of a 4 element list is shown in the table below Sample channel gain queue list Element Channel Range Mode 0 CH5 BIPS5V SE 1 CHI BIP10V DIFF 2 CH15 BIPIV SE 3 CH5 BIPS5V SE Carefully match the gain to the expected voltage range on the associated channel or an over range condition may occur Although this condition does not damage the device it does produce a useless full scale reading and can introduce a long recovery time due to saturatio
13. jumper on the board eiit W1 jumper Figure 8 W1 jumper location Figure 9 shows the jumper configured for pull up and pull down lee eee Pull down Pull up default Figure 9 W1 jumper configurations 6 Replace the top section of the case and fasten it to the bottom section with the four screws Replace the rubber feet onto each screw For more information about digital signal connections For general information about digital signal connections and digital I O techniques refer to the Guide to Signal Connections available on our web site at www mccdaq com signals signals pdf Trigger input The TRIG terminal is an external digital trigger input The trigger mode is software selectable for edge or level sensitive Edge sensitive mode is configurable for rising or falling edge Levelsensitive mode is configurable for high or low level The default setting at power up is edge sensitive rising edge Retrigger mode Retrigger mode lets you set up repetitive analog input or output trigger events The trigger is automatically re armed after it is activated Use software to set the A D or D A trigger count the number of samples you want per trigger 16 USB 1608G Series User s Guide Functional Details Counter input The CTRO and CTR1 terminals are 32 bit event counters that can accept frequency inputs up to 20 MHz The internal counter increments when the TTL levels transition from low
14. min 5 5 V absolute max Input low voltage 1 5 V max 0 5 V absolute min 0 V recommended min 22 USB 1608G Series User s Guide Specifications External clock input output Table 13 External clock I O specifications Parameter Specification Terminal names AICKI AICKO AOCKI AOCKO USB 1608GX 2A0 only Terminal types AxCKI Input active on rising edge AxCKO Output power on default is 0 V active on rising edge Terminal descriptions AxCKI Receives sampling clock from external source AxCKO Outputs the internal sampling clock D A or A D clock or the pulse generated from AxCKI when in external clock mode Input clock rate USB 1608G 250 kHz max USB 1608GX 500 kHz max USB 1608GX 2A0 500 kHz max Clock pulse width AxCKI 400 ns min AxCKO 400 ns min Input type Schmitt trigger 33 Q series resistor 47 kQ 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 V min OH 50 pA 3 76 V min OH 2 5 mA Output low voltage 0 1 V max IOL 50 uA 0 44 V max IOL 2 5 mA Output current 2 5 mA max Counter Table 14 Counter specifications Parameter Specification Terminal names CTRO CTRI Number of channels 2 channels Resolution 32 bit Counter ty
15. n Figure 4 Diff pinout locations are shown in Figure 5 12 USB 1608G Series User s Guide Functional Details Al channel 0 Al channel 8 Analog ground Al channel 1 Al channel 9 Analog ground Al channel 2 Al channel 10 Analog ground Al channel 3 Al channel 11 Analog ground AO channel 0 Analog ground AO channel 1 Analog ground Digital ground DIO channel 0 DIO channel 1 DIO channel 2 DIO channel 3 DIO channel 4 DIO channel 5 DIO channel 6 DIO channel 7 Digital ground No connection CHO CH8 AGND CH1 CH9 AGND CH2 CH10 AGND CH3 CH11 AGND AOUTO AGND AOUT1 AGND GND DIOO DIO1 DIO2 DIO3 DIO4 DIO5 DIO6 DIO7 GND NC OANMDAAWNH 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 00000000000 CH15 CH7 AGND CH14 CH6 AGND CH13 CH5 AGND CH12 CH4 AGND AGND AGND 5V AGND oooooooooooooooQ GND AICKI AICKO AOCKI TRIG GND CTR1 CTRO TMR GND ooooooooooQ Figure 4 SE mode pinout AOCKO Al channel 15 Al channel 7 Analog ground Al channel 14 Al channel 6 Analog ground Al channel 13 Al channel 5 Analog ground Al channel 12 Al channel 4 Analog ground Analog ground Analog ground 5V power output Analog ground Digital ground Ext clock input Al chan Ext clock output Al chan Ext clock input AO chan Ext clock output AO chan Trigger input Digital ground Counter 1 input Counter 0 input Timer output Digital ground USB 1608GX 2A0 o
16. n Specification Supply current Note 3 Quiescent current USB 1608G 230 mA USB 1608GX 230 mA USB 1608GX 2A0 260 mA 5 V user output voltage range Available at terminal block pin 42 4 5 V min to 5 25 V max 5 V user output current Available at terminal block pin 42 10 mA max Note 3 This is the total quiescent current requirement for the device that includes up to 10 mA for the Status LED This does not include any potential loading of the digital I O bits 5V terminal or the AOUTx outputs USB 1608GX 2A0 only USB Table 18 USB specifications Parameter Specification USB device type USB 2 0 high speed Device compatibility USB 1 1 USB 2 0 USB cable type A B cable UL type AWM 2527 or equivalent min 24 AWG VBUS GND min 28 AWG D D USB cable length 3 m 9 84 ft max 24 USB 1608G Series User s Guide Specifications Environmental Table 19 Environmental specifications Parameter Specification Operating temperature range 0 C to 55 C max Storage temperature range 40 C to 85 C max Humidity 0 to 90 non condensing max Mechanical Table 20 Mechanical specifications Parameter Specification Dimensions L x W x H 127 x 89 9 x 35 6 mm 5 00 x 3 53 x 1 40 in User connection length 3 m 9 84 ft max Screw terminal connector Table 21 Screw terminal connector sp
17. n of the input channel For more information about analog signal connections For more information about analog input connections refer to the Guide to Signal Connections this document is available on our web site at www mccdaq com signals signals pdf Analog output USB 1608GX 2A0 only The USB 1608GX 2A0 has two 16 bit analog outputs AOUTO and AOUT1 Both outputs can be updated simultaneously at a rate of 250 kS s per channel One output can be updated at a rate of 500 kS s The 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 provide one external clock input AICKI and one external clock output AICKO for analog inputs The USB 1608GX 2A0 also has one external clock input AOCKI and one external clock output AOCKO for analog outputs You can connect an external clock signal to AICKI and or AOCKI When using an external clock AICKO outputs the pulse generated from AICKI When using a USB 1608GX 2AO the AOCKO pin outputs the pulse generated from AOCKI When using the internal clock AICKO outputs the ADC scan clock When using a USB 1608GX 2AO AOCKO outputs the DAC scan clock Digital I O You can connect up to eight digital I O lines to DIOO through DIO7 Each digital channel is individually configurable for input or output The digital I O terminals can de
18. nly NC no connection on the USB 1608G and USB 1608GX Do not connect anything to pins labeled NC Al channel 0 high Al channel 0 low Analog ground Al channel 1 high Al channel 1 low Analog ground Al channel 2 high Al channel 2 low Analog ground Al channel 3 high Al channel 3 low Analog ground AO channel 0 Analog ground AO channel 1 Analog ground Digital ground DIO channel 0 DIO channel 1 DIO channel 2 DIO channel 3 DIO channel 4 DIO channel 5 DIO channel 6 DIO channel 7 Digital ground No connection CHOH CHOL AGND CH1H CHIL AGND CH2H CH2L AGND CH3H CH3L AGND AOUTO AGND AOUT1 AGND GND DIOO DIO1 DIO2 DIO3 DIO4 DIO5 DIO6 DIO7 GND NC oo o0070Hh 0000000000000000 8 8 8 8 8 8 8 8 8 8 8 CH7L CH7H AGND CH6L CH6H AGND CH5L CH5H AGND CH4L CH4H AGND AGND AGND 5V AGND 0000000000000000 GND AICKI AICKO AOCKI TRIG GND CTR1 CTRO TMR GND 200000000000 Figure 5 DIFF mode pinout AOCKO Al channel 7 low Al channel 7 high Analog ground Al channel 6 low Al channel 6 high Analog ground Al channel 5 low Al channel 5 high Analog ground Al channel 4 low Al channel 4 high Analog ground Analog ground Analog ground 5V power output Analog ground Digital ground Ext clock input Al chan Ext clock output Al chan Ext clock input AO chan Ext clock output AO chan Trigger input Digital ground Counter 1 input Counter 0 inpu
19. ou stop the scan The FIFO buffer is serviced in blocks as the data is transferred from the FIFO buffer to the computer memory buffer You start a continuous scan with either 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 2A0 and 250 kS s for the USB 1608G Burst mode When using the onboard pacer you can enable burst mode for more precise timing between samples When burst mode is enabled each successive channel in a scan is sampled at the maximum A D rate This ensures that samples from each channel are taken as close as possible to the same absolute point in time When burst mode is disabled data is sampled at evenly spaced intervals allowing maximum settling time and best amplitude accuracy Multi channel scanning with burst mode enabled and disabled is shown in Figure 2 CHO CH1 CH2 CHO CH1 CH2 Sample penod Clock period burst mode enabled CHO CH1 CH2 CHO Clock period burst mode disabled Figure 2 Multi channel scan with burst mode enabled and disabled The burst mode sample period is 2 us on the USB 1608GX and USB 1608GX 2A0 and 4 us on the USB 1608G You can trigger the acquisition with the external trigger and control the clock period with the internal or external A D pacer clock Pacing from the external clock always operates with burst mode enabled 11 USB 1608G Series U
20. pe Event counter Input type Schmitt trigger 33 Q series resistor 47 kQ pull down to ground Input source CTRO pin 52 CTRI pin 51 Counter read writes rates software paced 33 to 8000 reads writes per second typ system dependent Input high voltage 2 2 V min 5 5 V max Input low voltage 1 5 V max 0 5 V min Schmitt trigger hysteresis 0 4 V min 1 2 V max Input frequency 20 MHz max High pulse width 25 ns min Low pulse width 25 ns min 23 USB 1608G Series User s Guide Specifications Timer Table 15 Timer specifications Parameter Specification Terminal name TMR Timer type PWM output with count period delay and pulse width registers Output value Default state is idle low with pulses high Software selectable output invert Internal clock frequency 64 MHz Register widths 32 bit High pulse width 15 625 ns min Low pulse width 15 625 ns min Output high voltage 4 4 V min OH 50 pA 3 76 V min OH 2 5 mA Output low voltage 0 1 V max IOL 50 uA 0 44 V max IOL 2 5 mA Output current 2 5 mA max Memory Table 16 Memory specifications Parameter Specification Data FIFO 4 kS analog input 2 kS analog output Non volatile memory 32 KB 28 KB firmware storage 4 KB calibration user data Power Table 17 Power specifications Parameter Conditio
21. rary and InstaCal when you want to develop data acquisition applications using Windows programming languages Universal Library and InstaCal software are included on the CD that ships with the device Refer to the Quick Start Guide booklet for instructions about installing Universal Library and InstaCal software Installing the hardware Install the software before you install your device A driver needed to run the USB 1608G Series device is installed when you install the software Therefore 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 system with the latest USB drivers To connect a USB 1608G Series device to your system turn on your computer and connect the USB cable to an available USB port on the computer or to an external USB hub connected to the computer Connect the other end of the USB cable to the USB connector on the device No external power is required When you connect the device for the first time to a computer running Windows a Found New Hardware dialog opens when the operating system detects the device The dialog closes after the device is installed A green Status LED indicates the device status When the LED is on the device is powered and ready for operation When the LED is off the device is not powered or did not initialize Figure 3 on page 12 shows the loca
22. rated accuracy 10 V step 40 us Slew rate 9 V us Throughput Software paced 33 to 4000 S s typ system dependent Hardware paced 500 kS s max system dependent Note 1 Leave unused AOUTX output channels disconnected Note 2 AOUTX defaults to 0 V whenever the host computer is reset powered on suspended or a reset command is issued to the device Table 7 Calibrated absolute accuracy specifications Range Absolute accuracy LSB 10 V 16 0 Table 8 Calibrated absolute accuracy components specifications Range of reading Offset Offset tempco Gain tempco mV p V C ppm of range C 10 V 0 0183 1 831 12 7 13 Table 9 Relative accuracy specifications tLSB Range Relative accuracy INL 10 V 4 0 typ 21 USB 1608G Series User s Guide Specifications Analog input output calibration Table 10 Analog input output calibration specifications Parameter Specification Recommended warm up time 15 minutes min Calibration method Self calibration firmware Calibration interval year factory calibration AI calibration reference 5 V 2 5 mV max Actual measured values stored in EEPROM Tempco 5 ppm C max Long term stability 15 ppm 1000 hours AO calibration procedure USB 1608GX 2AO only The analog output pins are internally routed to the analog input circuit For best calibration result
23. ripheral equipment power sources and expansion hardware must be CE compliant All I O cables must be shielded with the shields connected to ground Ocables must be less than 3 meters 9 75 feet in length The host computer must be properly grounded The host computer must be USB 2 0 compliant Equipment must be operated in a controlled electromagnetic environment as defined by Standards EN 61326 1 2006 or IEC 61326 1 2005 Note Data acquisition equipment may exhibit noise or increased offsets when exposed to high RF fields gt 1V m or transients Declaration of Conformity based on tests conducted by Chomerics Test Services Woburn MA 01801 USA in October 2010 Test records are outlined in Chomerics Test Report EMI5736 10 We hereby declare that the equipment specified conforms to the above Directives and Standards V re Carl Haapaoja Director of Quality Assurance Measurement Computing Corporation 10 Commerce Way Suite 1008 Norton Massachusetts 02766 508 946 5100 Fax 508 946 9500 E mail info mccdag com www mccdag com
24. s disconnect any AOUTx connections at the terminal block pins prior to performing AOUT calibration Digital input output Table 11 Digital input output specifications Parameter Specification Digital type CMOS Number of I O 8 Configuration Each bit may be configured as input power on default or output Pull up configuration The port has 47 kQ 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 bit reads writes per second typ system dependent Input high voltage 2 0 V min 5 5 V absolute max Input low voltage 0 8 V max 0 5 V absolute min 0 V recommended min Output high voltage 4 4 V min OH 50 pA 3 76 V min OH 2 5 mA Output low voltage 0 1 V max IOL 50 uA 0 44 V max IOL 2 5 mA Output current 2 5 mA max External trigger Table 12 External trigger specifications Parameter Specification Trigger source TRIG input Trigger mode Software programmable for edge or level sensitive rising or falling edge high or low level Power on default is edge sensitive rising edge Trigger latency 1 us 1 clock cycle max Trigger pulse width 100 ns min Input type Schmitt trigger 33 Q series resistor and 49 9 kQ pull down to ground Schmitt trigger hysteresis 0 4 V to 1 2 V Input high voltage 2 2 V
25. s or other grounded object to eliminate any stored static charge If the device is damaged notify Measurement Computing Corporation immediately by phone fax or email Phone 508 946 5100 and follow the instructions for reaching Tech Support Fax 508 946 9500 to the attention of Tech Support Email techsupport mccdaq com For international customers contact your local distributor Refer to the International Distributors section on our web site at www mccdaq com International USB 1608G Series User s Guide Installing a USB 1608G Series Device Installing the software Note Before installing USB 1608G Series hardware you must install the software you plan to use with the device The USB 1608G Series is supported by DAQFlex software and Universal Library software You can install both software packages on your computer However you cannot run both software packages simultaneously with one USB 1608G Series device DAQFlex Install DAQFlex software when you want to develop data acquisition applications that can be deployed across multiple operating systems and custom embedded systems DAQFlex software for each supported operating system is available from the DAQFlex download page at www mccdaq com DAQFlexDL Refer to the DAQFlex Software User s Guide at www mccdaq com pdfs manuals DAQFlex9620Software pdf for instructions about installing DAQFlex software Universal Library and InstaCal Install Universal Lib
26. ser s Guide Functional Details External components USB 1608G Series devices have the following external components see Figure 3 USB connector LEDs Screw terminals Screw terminal pins 28 to 54 Screw terminal Status LED pins 1 to 27 Activity LED USB connector Figure 3 USB 1608G Series device external components USB connector The USB connector provides 5 V power and communication No external power supply is required LEDs USB 1608G Series devices have two LEDs Status and Activity The Status LED turns on when the device is detected and installed on the computer The Activity LED blinks when data is transferred and is off otherwise Figure 3 shows the location of each LED Screw terminals The USB 1608G Series device screw terminals provide the following connections 6 SE CHO to CH15 or eight DIFF CHOH CHOL to CH7H CH7L analog input connections Eight digital I O connections DIOO to DIO7 Two analog output connections AOUTO AOUT1 USB 1608GX 2A0 only One external clock input AICKI and one external clock output AICKO for analog inputs One external clock input AOCKI and one external clock output AOCKO for analog outputs USB 1608GX 2A0 only One digital trigger input TRIG Two counter inputs CTRO CTR1 One timer output TMR One power output 5V 13 analog ground AGND and five digital ground GND connections SE pinout locations are shown i
27. ser s Guide Introducing the USB 1608G Series Functional block diagram USB 1608G Series functions are illustrated in the block diagram shown here Calibration Voltage Sources Trigger A D Clock In A D Clock Out Counter In 0 Counter In 1 D A Clock In D A Clock Out USB 1608GX 2A0 only Bitwise Programmable DIO DIO Protection oooooooooooolooooooooooooooOooQ FIFO Data Clock 165V 16 5V Power Microcontroller with 12V 3 3V Supplies High Speed E Always On USB 2 0 ENABLEs Compliant Interface Oscillator Figure 1 USB 1608G Series functional block diagram Chapter 2 Installing a USB 1608G Series Device What comes with your shipment Verify that the following hardware components are included in the shipment Hardware USB 1608G Series device USB 1608G USB 1608GX or USB 1608GX 2AO shown below USB cable 2 meter length Documentation In addition to this hardware user s guide a Quick Start Guide booklet is included with the USB 1608G Series shipment This booklet provides an overview of the MCC DAQ software you received with the device and includes information about installing 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 wrist strap or touch either the computer chassi
28. similar device for 50 of the current list price I O boards face some harsh environments some harsher than the boards are designed to withstand Contact MCC to determine your product s eligibility for this program 30 Day Money Back Guarantee Any Measurement Computing Corporation product may be returned within 30 days of purchase for a full refund of the price paid for the product being returned If you are not satisfied or chose the wrong product by mistake you do not have to keep 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 are the buyer s sole and exclusive remedies Neither Measurement Computing Corporation nor its employees shall be liable for any direct or indirect special incidental or consequential damage arising from the use of its products even if Measurement Computing Corporation has been notified in advance of the possibility of such damages Trademark and Copyright Information Measurement Computing Corporation InstaCal Universal Library and the Measurement Computing logo are either trademarks or registered trademarks of Measurement Computing Corporation Refer to the Copyrights amp Trademarks section on mccdaq conylegal for more information about Measurement Computing trademarks Other product and company names mentioned herein are trademarks or trade names of their respecti
29. t Timer output Digital ground USB 1608GX 2A0 only NC no connection on the USB 1608G and USB 1608GX Do not connect anything to pins labeled NC 13 USB 1608G Series User s Guide Functional Details Signal connections Analog input You can configure the analog inputs for SE or DIFF mode The input voltage range is software selectable for 10 V 5 V 2 V or 1 V With SE mode connect up to 16 inputs to screw terminals CHO to CH15 SE mode requires two wires Connect one wire to the signal you want to measure CHx Connect one wire to the analog ground reference AGND Refer to Figure 4 on page 13 for the location of the SE inputs With DIFF mode connect up to eight differential inputs to screw terminals CHOH CHOL to CH7H CH7L DIFF mode requires two wires plus a ground reference Connect one wire to the high positive signal CHxH Connect one wire to the low negative signal CHxL Connect one wire to the analog ground reference AGND Refer to Figure 5 on page 13 for the location of the DIFF inputs Floating 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 channel input to an AGND pin A value of approximately 100 kQ can be used for most applications Leave unused input channels either floating or tied to an AGND terminal Source impedances s
30. tect the state of any TTL level input Refer to the schematic shown in Figure 7 DIOO lt gt 1 GND 5V Figure 7 Schematic showing switch detection by digital channel DIOO If you set the switch to the 5 V input DIOO reads TRUE 1 If you move the switch to GND DIOO reads FALSE 0 15 USB 1608G Series User s Guide Functional Details Internal pull up down configuration Unconnected inputs are pulled low by default to 0 V through 47 kQ resistors via jumper W1 on the circuit board The pull up pull down voltage is common to all 47 kQ resistors Complete the following steps to configure these inputs to pull high 45V Caution The discharge of static electricity can damage some electronic components Before removing the USB 1608G Series device from its housing ground yourself using a wrist strap or touch the computer chassis or other grounded object to eliminate any stored static charge Turn the device over and rest the top of the housing on a flat stable surface Peel off the four rubber feet on the bottom of the device to access the screws Remove the four screws from the bottom of the device WN Hold both the top and bottom sections together turn the device over and rest it on the surface then carefully remove the top section of the case to expose the circuit board 5 Configure jumper W1 for either pull up or pull down The jumper is configured by default for pull down Figure 8 shows the location of the
31. tion of the Status LED Mac OS X When connecting the device to a computer installed with the Mac OS X operating system the Status LED does not turn on until the device is configured with software Caution Do not disconnect any device from the USB bus while the computer is communicating with USB 1608G Series hardware or you may lose data and or your ability to communicate with the device If the Status LED is off If the Status LED is on but then turns off the computer has lost communication with the USB 1608G Series device To restore communication disconnect the USB cable from the computer and then reconnect it This should restore communication and the LED should turn on USB 1608G Series User s Guide Installing a USB 1608G Series Device Calibrating Self calibration USB 1608G Series hardware supports self calibration Calibrate the USB 1608G Series device whenever the ambient temperature changes by more than 10 C from the last self calibration Use either InstaCal or the DAQFlex FlexTest utility to calibrate the device Factory calibration The Measurement Computing Manufacturing Test department performs the initial factory calibration Contact Measurement Computing for details about how to return your device and have it calibrated to the factory specifications Programming and developing applications You can program and develop applications for the USB 1608G Series device using MCC DAQ software and DA
32. to high Timer output The TMR terminal is a pulse width modulation PWM timer output that can generate a pulse output with a programmable frequency in the range of 0 0149 Hz to 32 MHz The timer output parameters are software selectable Figure 10 shows the timer output schematic 5V Timer TMR terminal generator Figure 10 Timer output schematic Power output The 5V terminal can output up to 10 mA maximum You can use this terminal to supply power to external devices or circuitry Caution The 5V terminal is an output Do not connect to an external power supply or you may damage the device and possibly the computer Ground The analog ground AGND terminals provide a common ground for all analog channels The digital ground GND terminals provide a common ground for the digital counter timer and clock channels and the power terminal 17 USB 1608G Series User s Guide Functional Details Mechanical drawings O 000000000090 n000000000000000 _ NA Figure 11 USB 1608G Series device circuit board top and enclosure dimensions 18 Specifications Chapter 4 All specifications are subject to change without notice Typical for 25 C unless otherwise specified Specifications in italic text are guaranteed by design Analog input Table 1 General analog input specifications Parameter Condition Specification A D converter type Successive
33. ut 21 DIO3 Digital input output 48 AOCKO Note 5 AO clock output 22 DIO4 Digital input output 49 TRIG Trigger input 23 DIO5 Digital input output 50 GND Digital ground 24 DIO6 Digital input output 51 CTR1 Counter 1 25 DIO7 Digital input output 52 CTRO Counter 0 26 GND Digital ground 53 TMR Timer output 27 NC No connect 54 GND Digital ground Note 5 USB 1608GX 2AO only NC no connection on the USB 1608G and USB 1608GX 26 CE Declaration of Conformity Manufacturer Measurement Computing Corporation Address 10 Commerce Way Suite 1008 Norton MA 02766 USA Category Electrical equipment for measurement control and laboratory use Measurement Computing Corporation declares under sole responsibility that the products USB 1608G USB 1608GX USB 1608GX 2AO to which this declaration relates is in conformity with the relevant provisions of the following standards or other documents EC EMC Directive 2004 108 EC General Requirements EN 61326 1 2006 IEC 61326 1 2005 Emissions EN 55011 2007 CISPR 11 2003 Radiated emissions Group 1 Class A EN 55011 2007 CISPR 11 2003 Conducted emissions Group 1 Class A Immunity EN 61326 1 2006 Table 3 EC 61000 4 2 2001 Electrostatic Discharge immunity EC 61000 4 3 2002 Radiated Electromagnetic Field immunity To maintain compliance to the standards of this declaration the following conditions must be met The host computer pe
34. ve companies O 2012 Measurement Computing Corporation All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form by any means electronic mechanical by photocopying recording or otherwise without the prior written permission of Measurement Computing Corporation Notice Measurement Computing Corporation does not authorize any Measurement Computing Corporation product for use in life support systems and or devices without prior written consent from Measurement Computing Corporation Life support devices systems are devices or systems that a are intended for surgical implantation into the body or b support or sustain life and whose failure to perform can be reasonably expected to result in injury Measurement Computing Corporation products are not designed with the components required and are not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis of people HM USB 1608G Series docx Table of Contents Preface About this User s Guide 51er terere inicien rne ser rper ses Eada 5 What you will learn from this user s guide 101 5 Conventions in this user s guide Where to find more
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