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Preface 

About this User's Guide 

What you will learn from this user's guide 

This user's guide explains how to install, configure, and use the RedLab 1208FS so that you get the most out of 
its USB data acquisition features.  

This user's guide also refers you to related documents available on our web site, and to technical support 
resources. 

Conventions in this user's guide 

For more information on … 

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.  

<

#

:

#

Angle brackets that enclose numbers separated by a colon signify a range of numbers, such as those assigned 
to registers, bit settings, etc.  

bold

 text 

Bold 

text is used for the names of objects on the screen, such as buttons, text boxes, and check boxes. For 

example: 

1.

   Insert the disk or CD and click the 

OK

 button.

 

italic

 text 

Italic

 text

 

is used for the names of manuals and help topic titles, and to emphasize a word or phrase. For 

example: 
The 

Insta

Cal installation procedure is explained in the 

Quick Start Guide

Never

 touch the exposed pins or circuit connections on the board. 

Where to find more information 

The following electronic documents provide helpful information relevant to the operation of the RedLab 
1208FS. 

ƒ

 

The 

Quick Start Guide

 is available on our RedLab CD in the root directory. 

ƒ

 

The 

Guide to Signal Connections

 is available on our RedLab CD under „ICalUL\Documents“. 

ƒ

 

The 

Universal Library User's Guide

 is available on our RedLab CD under „ICalUL\Documents“. 

ƒ

 

The 

Universal Library Function Reference

 is available on our RedLab CD under „ICalUL\Documents“.

 

ƒ

 

The 

Universal Library for LabVIEW

 User’s Guide 

is available on our RedLab CD under 

„ICalUL\Documents“. 

 

Summary of Contents for redlab 1208fs

Page 1: ......

Page 2: ...RedLab 1208FS USB based Analog and Digital I O Module User s Guide Document Revision 1 5 E April 2014 Copyright 2014 Meilhaus Electronic...

Page 3: ...rm Meilhaus Electronic GmbH feels obliged to point out that they cannot be take on neither any warranty apart from the claims for warranty as agreed nor legal responsibility or liability for consequen...

Page 4: ...Details 13 Theory of operation analog input acquisition modes 13 Software paced mode 13 Continuous scan mode 13 External components 13 USB connector 14 LED 14 Screw terminal wiring 14 Main connector a...

Page 5: ...RedLab 1208FS User s Guide 5 Microcontroller 31 Power 31 General 32 Environmental 32 Mechanical 32 Main connector and pin out 32 4 channel differential mode 33 8 channel single ended mode 33...

Page 6: ...Bold text is used for the names of objects on the screen such as buttons text boxes and check boxes For example 1 Insert the disk or CD and click the OK button italic text Italic text is used for the...

Page 7: ...nter The RedLab 1208FS is powered by the 5 volt USB supply from your computer No external power is required The analog inputs are software configurable for either eight 11 bit single ended inputs or f...

Page 8: ...IN CAL Screw terminal I O connector Screw terminal I O connector Analog Input 8 single ended 11 bit channels or 4 differential 12 bit channels 1 Analog output 2 channels 12 bit 8 2 Port A Port B Figur...

Page 9: ...osition DIP switches to set or interrupts to configure You can connect the RedLab 1208FS before or after you install the software and without powering down your computer first When you connect an HID...

Page 10: ...USB cable 2 meter length Additional documentation In addition to this hardware user s guide you should also receive the Quick Start Guide available on our RedLab CD root directory This booklet supplie...

Page 11: ...stem software Before you install your RedLab 1208FS run Windows Update to update your operating system with the latest HID and USB drivers To connect the RedLab 1208FS to your system turn your compute...

Page 12: ...ilhaus com Caution Do not disconnect any device from the USB bus while the computer is communicating with the RedLab 1208FS or you may lose data and or your ability to communicate with the RedLab 1208...

Page 13: ...acquire data from up to eight channels The analog data is continuously acquired and converted to digital values until you stop the scan Data is transferred in blocks of 31 samples from the RedLab 120...

Page 14: ...FS is connected to a computer or external USB hub Blinks continuously Data is being transferred Screw terminal wiring The RedLab 1208FS has two rows of screw terminals one row on the top edge of the h...

Page 15: ...ternal event counter connection CTR Screw terminal pins 21 40 The screw terminals on the bottom edge of the pins 21 to 40 provide the following connections 16 digital I O connections PortA0 to Port A7...

Page 16: ...Port B3 35 Port B2 34 Port B1 33 Port B0 32 Port A6 27 Port A5 26 Port A4 25 Port A3 24 Port A2 23 Port A1 22 Port A0 21 8 channel single ended mode pin out 20 CTR 19 SYNC 18 TRIG IN 17 GND 16 CAL 15...

Page 17: ...gh two wires The wire carrying the signal to be measured connects to CH IN The second wire connects to AGND The input range for single ended mode is 10 V No other ranges are supported in single ended...

Page 18: ...signal of the differential channel must be in the 10 V to 20 V range in order to yield a useful result For example you input a 4 V pp sine wave to CHHI and apply the same sine wave 180 out of phase t...

Page 19: ...respect to ground all ranges except 20V can realize a linear output for any differential signal with zero common mode voltage and full scale signal inputs The 20 V range is the exception You cannot p...

Page 20: ...40 Port A0 to Port A7 and Port B0 to Port B7 Refer to the pinout diagrams on page 16 for the location of these pins You can configure each digital port for either input or output When you configure t...

Page 21: ...llows RedLab 1208FS 80 mA 16 DIO 2 5 mA ea 2 AO 15 mA ea 150 mA For an application running on a PC or powered hub the maximum available excess current is 500 mA 150 mA 350 mA This number is the total...

Page 22: ...Quite often resolution is incorrectly used to quantify the performance of a measurement product While 12 bits or 1 part in 4096 does indicate what can be resolved it provides little insight into the...

Page 23: ...tput Code 9 77mV 2048 Figure 12 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 percentage of full s...

Page 24: ...no voltage error Combining these two error sources in Figure 14 we have a plot of the error band of the RedLab 1208FS for the 10 V range This is a graphical version of the typical accuracy specificati...

Page 25: ...reading It can also introduce a long recovery time from saturation which can affect the next measurement in the queue Synchronizing multiple units You can connect the SYNC pin of two RedLab 1208FS un...

Page 26: ...that use the EXTCLOCK option An example of a master slave configuration is shown below Figure 15 Configuring for synchronous data acquisition When you are operating one RedLab 1208FS do not set the E...

Page 27: ...ngle ended mode 10 V G 2 Input ranges differential mode 20 V G 1 10 V G 2 5 V G 4 4 V G 5 2 5 V G 8 2 0 V G 10 1 25 V G 16 1 0 V G 20 Software selectable Software paced 250 samples per second S s typ...

Page 28: ...ge Accuracy LSB 10 V 4 0 Table 4 Accuracy components differential mode All values are Range of Reading Gain Error at full scale FS millivolts mV Offset mV Accuracy at FS mV 20 V 0 2 40 9 766 49 766 10...

Page 29: ...9 Analog output accuracy all values are Range Accuracy LSB 0 4 096 V 4 0 typ 45 0 max Table 10 Analog output accuracy components all values are Range of FSR Gain Error at FS mV Offset mV Note 5 Accur...

Page 30: ...series resistor External clock input output Table 13 External clock I O specifications Parameter Conditions Specification Pin name SYNC Pin type Bidirectional Output default Outputs internal A D pace...

Page 31: ...Access Description 0x000 0x07F Reserved 128 bytes system data 0x080 0x1FF Read write 384 bytes cal data EEPROM Configuration 0x200 0x3FF Read write 512 bytes user area Microcontroller Table 16 Microco...

Page 32: ...In this case the maximum current available from the USB 5 V is 100 mA The minimum USB 5 V voltage level can be as low as 4 1 V Note 11 This refers to the total amount of current that can be sourced fr...

Page 33: ...14 D A OUT 1 34 Port B2 15 AGND 35 Port B3 16 CAL 36 Port B4 17 GND 37 Port B5 18 TRIG IN 38 Port B6 19 SYNC 39 Port B7 20 CTR 40 GND 8 channel single ended mode Pin Signal Name Pin Signal Name 1 CH0...

Page 34: ...Meilhaus Electronic GmbH Am Sonnenlicht 2 D 82239 Alling Germany Phone 49 0 8141 5271 0 Fax 49 0 8141 5271 129 E Mail sales meilhaus com http www meilhaus com...

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