RedLab 1608FS-Plus User's Guide
Contents
1. 10V Figure 10 Error band plot Synchronized operations You can connect the SYNC pin of multiple devices together in a master slave configuration and acquire data from the analog inputs of all devices using one clock When the SYNC pin is configured as an output the internal A D pacer clock signal is sent to the screw terminal You can output the clock to the SYNC pin of another device that is configured for A D pacer input 14 RedLab 1608FS Plus User s Guide Functional Details Mechanical drawings 0 750 0 520 0 590 1 420 1 474 1 590 020 N _ TI 1 600 2 770 P sus su CE 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 i B 1225 ernennt 0 100 CL 0 025 SQ PINS 0 750 e D R 0 0504 S ci 1 0 000 0 069 0 125 gez VUSP s 3 200 0 050 LED ct e SHIEL Dle 0 100 CL 0 025 SQ PINS eo 0 750 e 0 100 CL 0 025 SQ PINS 1 225 C L EXEEEREEZNETIEEEEEER S LE E E E E E m en a a5 ass a ss as os ns a on u 8 Y 1 600 045 S Maximum Component Height Top 0 545 Bottom 0 125 m 3 10 c 00000 000000000000000 L H 3 20 0 212 N Figure 11 RedLab 1608FS Plus circuit board top and enclosure dimensions 15 Chapter 4 Specifications All specifications are subject to change with2. 13 Environmental specifications Parameter Specification Operating temperature range 0 C to 70 C Storage temperature range 40 C to 70 C Humidity 0 to 90 non condensing Mechanical Table 14 Mechanical specifications Parameter Specification Dimensions L x W x H 79 x 82 x 27 mm 3 10 x 3 20 x 1 05 in USB cable length 3 m 9 84 ft max User connection length 3 m 9 84 ft max 20 RedLab 1608FS Plus User s Guide Specifications Screw terminal connector and pinout Table 15 Connector specifications Parameter Specification Connector type Screw terminal Wire gauge range 16 AWG to 30 AWG Table 16 Connector pinout Pin Signal Name Pin Signal Name 1 CHO IN 21 DIOO 2 AGND 22 GND 3 CH1 IN 23 DIO1 4 AGND 24 GND 5 CH2 IN 25 DIO2 6 AGND 26 GND 7 CH3 IN 27 DIOS 8 AGND 28 GND 9 CH4 IN 29 DIO4 10 AGND 30 GND 11 CH5 IN 31 DIO5 12 AGND 32 GND 13 CH6 IN 33 DIO6 14 AGND 34 GND 15 CH7 IN 35 DIO7 16 AGND 36 SYNC 17 RSVD 37 TRIG_IN 18 AGND 38 CTR 19 AGND 39 PC 5V 20 AGND 40 GND 21 Meilhaus Electronic GmbH Am Sonnenlicht 2 D 82239 Alling Germany Phone 49 0 81 41 52 71 0 Fax 49 0 81 41 52 71 129 E Mail sales meilhaus com http www meilhaus com
3. 98 2 V 1 31 1 V 0 68 16 RedLab 1608FS Plus User s Guide Table 3 Accuracy components All values are Range Gain error Gain error at FS Offset mV of Reading mV 10 V 0 04 4 00 1 66 5 V 0 04 2 00 0 98 2 V 0 04 0 80 0 51 1 V 0 04 0 40 0 28 Noise performance Table 4 Noise performance Range Typical counts LSBrms 10 V 10 1 52 5 V 10 1 52 2 V 11 1 67 1 V 14 2 12 Table 4 summarizes the noise performance for the RedLab 1608FS Plus Noise distribution is determined by gathering 50 K samples with inputs tied to ground at the user connector Samples are gathered at the maximum specified sampling rate of 100 kS s Digital input output Table 5 Digital I O specifications Parameter Specification Digital type 5V TTL Number of I O 8 DIOO through DIO7 Configuration Independently configured for input or output Pull up pull down All pins pulled up to 5V via 47 K resistors default configuration May be changed to pull down using an internal jumper Input high voltage 2 0 V min threshold Input high voltage limit 5 5 V absolute max Input low voltage threshold 0 8 V max Input low voltage limit 0 5 V absolute min 0 V recommended min Output high voltage 4 4 V min IOH 50 pA 3 76 V min IOH 24 mA Output low voltage 0 1 V max IOL 50 pA 0 44 V max IOL 24
4. RedLab 1608FS Plus User s Guide Functional Details For more information on digital signal connections For general information regarding digital signal connections and digital I O techniques refer to the Guide to Signal Connections available on our web site at www mccdaq con signals signals pdf Counter input The CTR terminal is a 32 bit event counter that can accept frequency inputs up to 1 MHz The internal counter increments when the TTL levels transition from low to high SYNC I O The SYNC terminal is a bidirectional I O signal that can be configured as an input default or an output Configure as an external clock input to pace the A D conversions from an external source The SYNC terminal supports TTL level input signals of up to 100 kHz Configure as an output that may be used to pace conversions on a second device and acquire data from 16 channels Refer to page 14 for more information about synchronized operations Trigger input The TRIG IN terminal is an external digital trigger input The trigger mode is software selectable for edge or level sensitive Edge sensitive mode is selectable for rising or falling Level sensitive mode is selectable for high or low Reserved The RSVD terminal is reserved for future use 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 trigger counter and sy
5. gh performance 32 bit RISC microcontroller 19 RedLab 1608FS Plus User s Guide Specifications Power Table 11 Power specifications Parameter Condition Specification Supply current USB enumeration lt 100 mA Supply current Including DIO and SYNC output loading lt 500 mA 5V power available Note 2 Connected to externally powered root port hub ora 4 5 V min 5 25 V max self powered hub Output current Note 3 200 mA max Note 2 Self powered hub refers to a USB hub with an external power supply Self powered hubs allow a connected USB device to draw up to 500 mA Root port hubs reside in the PC USB host Controller The USB port s on your PC are root port hubs All externally powered root port hubs such as a desktop PC provide up to 500 mA of current for a USB device Battery powered root port hubs provide 100 mA or 500 mA depending upon the manufacturer A laptop PC that is not connected to an external power adapter is an example of a battery powered root port hub If your laptop PC is constrained to the 100 mA maximum you need to purchase a self powered hub Note 3 Output current is the total amount of current that can be sourced from the PC 5V SYNC and digital outputs General Table 12 General specifications Parameter Specification Device type USB 2 0 full speed Device compatibility USB 1 1 USB 2 0 Environmental Table
6. mA Power on and reset state Input 17 RedLab 1608FS Plus User s Guide Specifications External trigger Table 6 External trigger specifications Parameter Condition Specification Trigger source External digital TRIG_IN Trigger mode Software selectable Edge or level sensitive user configurable for CMOS compatible rising or falling edge high or low level Trigger latency 2 us 1 pacer clock cycle max Trigger pulse width lus min Input type Schmitt trigger 47 kQ pull down to ground Schmitt trigger hysteresis 1 01 V typ 0 6 V min 1 5 V max Input high voltage threshold 2 43 V typ 1 9 V min 3 1V max Input high voltage limit 5 5 V absolute max Input low voltage threshold 1 42 V typ 1 0 V min 2 0 V max Input low voltage limit 0 5 V absolute min 0 V recommended min External clock input output Table 7 External clock I O specifications Parameter Condition Specification Pin name SYNC Pin type Bidirectional Direction software selectable Input Receives A D pacer clock from external source Output Outputs internal A D pacer clock Input clock rate 100 KHz max Clock pulse width Input 1 us min Output 4 us min Input clock mode Edge sensitive rising Input type Schmitt trigger 47 kQ pull down to ground Schmitt trigger hysteresis 1 01 V typ 0 6 V min 1 5 V max Input high vol
7. nc channels and the power terminal Power output The PC 5V output terminal can output up to 200 mA maximum You can use this terminal to supply power to external devices or circuitry Caution The PC 5V terminal is an output Do not connect it to an external power supply or you may damage the device and possibly the computer The maximum output current that can be drawn by the RedLab 1608FS Plus is 500 mA This maximum applies to most personal computers and self powered USB hubs Bus powered hubs and notebook computers may limit the maximum available output current to 100 mA If the current requirement of the device exceeds the current available from the computer connect to a self powered hub or power the computer with an external power adapter When running applications with the device each DIO bit can source up to 24 mA The total amount of current that can be sourced from the PC 5V SYNC and digital outputs is 200 mA max Accuracy The overall accuracy of any instrument is limited by the error components within the system Resolution is often used incorrectly to quantify the performance of a measurement product While 16 bits or 1 part in 65 536 does indicate what can be resolved it provides little insight into the quality or accuracy of an absolute measurement Accuracy specifications describe the actual measurement achievable with a RedLab 1608FS Plus Accuracy specifications are listed Seite 16 There are three types of e
8. out 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 16 bit successive approximation type Number of channels 8 single ended Input configuration Individual A D per channel Sampling method Simultaneous Absolute maximum input voltage CHx IN relative to GND 15 V max Input impedance 100 MQ min Input ranges Software selectable per channel 10 V 45 V 2 V 1 V Sampling rate Hardware paced 0 01 S s to 100 kS s software selectable Throughput Software paced 500 S s all channels Hardware paced Note 1 400 kS s of channels max 100 kS s max for any channel BURSTIO lt 32 768 total samples 800 kS s of channels max uses onboard FIFO 100 kS s max for any channel Gain queue Software configurable Up to eight elements one gain element per unique ordered channel Resolution 16 bits No missing codes 16 bits Crosstalk Signal DC to 25 kHz 80 dB Trigger source Software selectable External digital TRIG_IN Note 1 Maximum throughput when scanning in hardware paced mode is machine dependent Accuracy Analog input DC voltage measurement accuracy Table 2 Calibrated absolute accuracy Range Accuracy mV 10 V 5 66 5 V 2
9. rcentage of full scale Figure 9 shows the RedLab 1608FS Plustransfer function with gain error Gain error is easily converted to voltage by multiplying the full scale input 10 V by the error 13 RedLab 1608FS Plus User s Guide Functional Details The accuracy plots in Figure 9 are drawn for clarity and are not drawn to scale Input Voltage Gain error 0 04 or 4 mV Gain error 0 04 or 4 mV y PUN ae Output Code Dr 65535 10V Figure 9 ADC Transfer function with gain error For example a RedLab 1608FS Plus exhibits a typical calibrated gain error of 0 04 on all ranges For the 10 V range this would yield 10 V x 0 0002 4 mV This means that at full scale neglecting the effect of offset for the moment the measurement would be within 4 mV ofthe actual value Note that gain error is expressed as a ratio Values near FS 10 V are more affected from an absolute voltage standpoint than are values near mid scale which see little or no voltage error Combining these two error sources in Figure 10 we have a plot of the error band at full scale 10 V This plot is a graphical version of the typical accuracy specification of the product The accuracy plots in Figure 10 are drawn for clarity and are not drawn to scale Input Voltage Ideal 1 66 mV 4 mV Ideal Ideal 1 66 mV 4 mV Output Code 65535 Ideal 1 66 mV 4 mV Ideal Ideal 1 66 mV 4 mV gt
10. rrors which affect the accuracy of a measurement system Offset 12 RedLab 1608FS Plus User s Guide Functional Details gain nonlinearity The primary error sources in a RedLab 1608FS Plus are offset and gain Nonlinearity is small and is not significant as an error source with respect to offset and gain Figure 7 shows an ideal error free transfer function The typical calibrated accuracy of a RedLab 1608FS Plus is range dependent We use a 10 V range as an example of what you can expect when performing a measurement in this range Input Voltage Output Code B 32768 65535 10V Figure 7 Ideal ADC transfer function The offset error is measured at mid scale Ideally a zero volt input should produce an output code of 32 768 Any deviation from this is an offset error Figure 8 shows the transfer function with an offset error The typical Offset error specification for a RedLab 1608FS Plus on the 10 V range is 1 66 mV Offset error affects all codes equally by shifting the entire transfer function up or down along the input voltage axis The accuracy plots in Figure 8 are drawn for clarity and are not drawn to scale Input Voltage Ideal Output Code Offset 1 66 mV i 32768 1 66 mV 0 fi actuals 7 65535 10V Figure 8 ADC transfer function with offset error Gain error is a change in the slope of the transfer function from the ideal and is typically expressed as a pe
11. tage threshold 2 43 V typ 1 9 V min 3 1V max Input high voltage limit 5 5 V absolute max Input low voltage threshold 1 42 V typ 1 0 V min 2 0 V max Input low voltage limit 0 5 V absolute min 0 V recommended min Output high voltage 4 4 V min IOH 50 pA 3 80 V min IOH 8 mA Output low voltage 0 1 V max IOL 50 uA 0 44 V max IOL 8 mA 18 RedLab 1608FS Plus User s Guide Specifications Counter section Table 8 Counter specifications Parameter Specification Pin name CTR Counter type Event counter Number of channels 1 Input type Schmitt trigger 47 kQ pull down to ground Input source CTR screw terminal Resolution 32 bits Schmitt trigger hysteresis 1 01 V typ 0 6 V min 1 5 V max Input high voltage threshold 2 43 V typ 1 9 V min 3 1V max Input high voltage limit 5 5 V absolute max Input low voltage threshold 1 42 V typ 1 0 V min 2 0 V max Input low voltage limit 0 5 V absolute min 0 V recommended min Input frequency 1 MHz max High pulse width 500 ns min Low pulse width 500 ns min Memory Table 9 Memory specifications Parameter Specification Data FIFO 32 768 samples 65 536 bytes EEPROM 2 048 bytes 768 bytes calibration 256 bytes user 1 024 bytes DAQFlex Microcontroller Table 10 Microcontroller specifications Parameter Specification Type Hi
Download Pdf Manuals
Related Search