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Keithley DAS-1800ST Series User Manual Download Page 76

 

Connecting Signals

4-15

 

The upper two circuits of the diagram illustrate floating signal source 
connections. (A floating signal source is a voltage source that has no 
connection with earth ground; the signal is not referenced to the third wire 
on a 3-wire AC line outlet.) Floating signal sources require the addition of 
resistors to provide a bias current return. You can determine the value of 
the bias return resistors (R

 

b

 

) from the value of the source resistance (R

 

s

 

), 

using the following relationships:

 

●

 

When R

 

s

 

 is greater than 100

 

Ω

 

, use the connections in the upper 

circuit. The resistance of each of the two bias return resistors must 
equal 2000 R

 

s

 

.

 

●

 

When R

 

s

 

 is less than 100

 

Ω

 

, use the connections in the middle circuit. 

The resistance of the bias return resistor must be greater than 1000 
R

 

s

 

.

In the lower circuit of Figure 4-13, bias current return is inherently 
provided by the source. The circuit requires no bias resistors. R

 

s

 

 is the 

signal source resistance while R

 

v

 

 is the resistance required to balance the 

bridge.

 

Avoiding a Ground Loop Problem

 

If your signal source is grounded, the signal-source ground and the 
DAS-1800ST/HR Series board ground may not be at the same voltage 
level because of the distances between equipment wiring and the building 
wiring. In this situation, ground loop problems can occur if you tie the 
two grounds together and the two grounds are not at the same potential. 
The difference in potential is referred to as a 

common-mode voltage

 (V

cm

) 

because it is normally common to both sides of a differential input (it 
appears between each side and ground). 

The most effective way to avoid common-mode voltage errors for 
single-ended inputs is to wire the inputs as shown in Figure 4-12 on page 
4-13, using the U_CM MD input. 

Since a differential input responds only to the difference in the signals at 
its high and low inputs, its common-mode voltages cancel out and leave 
only the signal. However, if your input connections create a ground loop, 
you could see incorrect data readings resulting from the difference 
between the signal source’s ground potential and the DAS-1800ST/HR 
Series board’s ground. 

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Summary of Contents for DAS-1800ST Series

Page 1: ...ss underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In stock Ready to ship TAR certified secure asset solutions Expert team I Trust guarantee I 100 satisfaction All trademarks brand names and brands appearing herein are the property of their respectiv...

Page 2: ...s and Technicians on staff in our State of the art Full Service In House Service Center Facility InstraView Remote Inspection Remotely inspect equipment before purchasing with our Innovative InstraView website at http www instraview com We bUy used equipment We also offer credit for Buy Backs and Trade Ins Sell your excess underutilized and idle used equipment Contact one of our Customer Service R...

Page 3: ...G R E A T E R M E A S U R E O F C O N F I D E N C E Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOURCE www artisan scientific com Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 4: ...tion of the Keithley Software will be uninterrupted or error free and or that the Keithley Software will be adequate for the customer s intended application and or use This warranty shall be null and void upon any modification of the Keithley Software that is made by other than Keithley and not approved in writing by Keithley If Keithley receives notification of a Keithley Software nonconformity t...

Page 5: ...Road Dewai Madian Beijing 100029 8610 6202 2886 Fax 8610 6202 2892 FINLAND Tietäjäntie 2 02130 Espoo Phone 09 54 75 08 10 Fax 09 25 10 51 00 FRANCE 3 allée des Garays 91127 Palaiseau Cédex 01 64 53 20 20 Fax 01 60 11 77 26 GERMANY Landsberger Strasse 65 82110 Germering 089 84 93 07 40 Fax 089 84 93 07 34 GREAT BRITAIN Unit 2 Commerce Park Brunel Road Theale Berkshire RG7 4AB 0118 929 7500 Fax 0118...

Page 6: ...uide Revision H June 2002 Part Number 90090 Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOURCE www artisan scientific com Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com ...

Page 7: ...oft and Windows are registered trademarks and Visual C and Visual Basic are trademarks of Microsoft Corporation Borland is a registered trademark and Borland C Delphi and Turbo Pascal are trademarks of Borland International Inc IBM is a registered trademark of International Business Machines Corporation Acrobat is a registered trademark of Adobe Systems Incorporated All other brand and product nam...

Page 8: ...otechnical Commission IEC Standard IEC 60664 Most mea surement control and data I O signals are Installation Category I and must not be directly connected to mains voltage or to voltage sources with high transient over voltages Installation Category II connections require protection for high transient over voltages often associated with local AC mains connections Assume all measurement control and...

Page 9: ...ws that it can source or measure 1000 volts or more including the combined effect of normal and common mode voltages Use standard safety precautions to avoid personal contact with these voltages The WARNING heading in a manual explains dangers that might result in personal injury or death Always read the associated information very carefully before performing the indicated procedure The CAUTION he...

Page 10: ...s 2 15 Clock Sources 2 16 Pacer Clock 2 16 Burst Mode Conversion Clock 2 17 Triggers 2 18 Pre Trigger Acquisition 2 20 About Trigger Acquisition 2 20 Post Trigger Acquisition 2 20 Gates 2 20 Data Transfer Modes 2 22 Analog Output Features 2 23 DAS 1800ST DA Series Boards 2 23 DAS 1802HR DA Boards 2 23 Digital I O Features 2 23 Using Digital Control Signal DOSTB 2 24 Using Digital Control Signal TG...

Page 11: ... Signals 4 11 Precautions 4 11 Precautions for Using a DAS 1801ST Board at High Gains 4 12 Additional Precautions 4 12 Connecting a Signal to a Single Ended Analog Input 4 13 Connecting a Signal to a Differential Analog Input 4 14 Avoiding a Ground Loop Problem 4 15 Connecting Analog Output Signals 4 16 Connecting Digital I O Signals 4 17 Connecting Digital Control Signals 4 17 Connecting and Sync...

Page 12: ...U Accessory B 3 Connectors J4 to J7 and Jumper Pads J8 to J11 of the STA 1800U Accessory B 3 C DriverLINX Configuration Notes Configuration C 2 Model C 2 Address C 3 Calibrate C 3 A D Channels C 3 A D Volts C 3 D A Volts C 3 AI IRQ C 4 AI DMA 1 AO DMA 1 C 4 Clock C 4 Special Device Settings C 4 Common mode reference C 4 Number of EXP 1800s C 5 Simultaneous sample and hold configuration C 5 Disable...

Page 13: ...s Analog Input Output Clocking C 17 External Clocking C 18 External Triggering C 18 Data Coding C 19 D A Conversion Delay C 20 D A Data Lost C 21 Digital Input and Output Subsystems C 21 Logical Channels C 21 Digital Input Initialization C 22 Digital Output Initialization C 22 Digital I O Conversion Delay C 22 Digital I O Data Lost C 22 Counter Timer Subsystem C 23 Counter Timer Initialization C 2...

Page 14: ...ies Board 4 2 Figure 4 3 Pin Assignments for the Main I O Connector of a DAS 1800ST HR Series Board 4 3 Figure 4 4 Pin Assignments for Connectors J1 and J2 of the STA 1800U 4 4 Figure 4 5 Attaching an STP 50 to a DAS 1800ST HR Series Board 4 5 Figure 4 6 Pin Assignments for Screw Terminals of the STP 50 4 5 Figure 4 7 Attaching an SSH 8 to a DAS 1800ST Series Board through an STA 1800U 4 6 Figure ...

Page 15: ...Input Gains and Ranges for Unipolar and Bipolar Modes 2 9 Table 2 3 Maximum Throughput for DAS 1800ST Series Boards Bipolar Mode Fixed Gain 2 11 Table 2 4 Maximum Throughput for DAS 1800ST Series Boards Unipolar Mode Fixed Gain 2 11 Table 2 5 Maximum Throughput for DAS 1801ST Boards Bipolar Mode Change of Gain 2 12 Table 2 6 Maximum Throughput for DAS 1801ST Boards Unipolar Mode Change of Gain 2 1...

Page 16: ... DAS 1802ST DA and DAS 1802HR DA A 9 Table C 1 Modes Supported by DAS 1800 Models C 6 Table C 2 Allowed Operations and Events for Supported Subsystem Modes C 7 Table C 3 Table of Logical Channel Numbers for Eight External EXP 1800 Multiplexers C 12 Table C 4 Input Voltage and A D Binary Value C 14 Table C 5 Input Voltage and A D Binary Value C 14 Table C 6 Input Voltage and A D Binary Value C 15 T...

Page 17: ...tion and instructions contained in this manual you must be familiar with the operation of an IBM PC or compatible in the Windows 95 98 or Windows NT environment You must also be familiar with data acquisition principles and their applications The DAS 1800ST HR Series User s Guide is organized as follows Section 1 describes features accessories and software options of the boards Section 2 describes...

Page 18: ...support Appendix A lists the specifications for DAS 1800ST HR Series boards Appendix B lists the pin assignments for the main I O connectors of DAS 1800ST HR Series boards and for the I O and accessory connectors of STA 1800U screw terminal accessories Appendix C contains DriverLINX configuration information for the DAS 1800 Series boards An index completes this manual Artisan Scientific Quality I...

Page 19: ...ne floppy disk drive Microsoft Windows 95 98 or Windows NT 4 0 or higher a compiler supporting Microsoft Windows development a mouse is highly recommended The DAS 1801ST is a 12 bit high gain board while the DAS 1802ST is a 12 bit low gain board The DAS 1802HR is a 16 bit low gain board Major features of these boards are as follows The boards make 16 bit data transfers on the AT bus The boards are...

Page 20: ... gain of one only External expansion accessories allow a board to acquire data from up to 256 channels at the board s maximum acquisition rate Dual channel DMA Direct Memory Access operation allows the acquisition of more than 64 ksamples Pulsed interrupts allow multiple boards to share interrupt levels Hardware trigger and gate for A D conversions have software selectable polarity Triggering capa...

Page 21: ...stallation and configuration of DriverLINX to your DAS 1800ST HR Series board and demonstrates several virtual bench top instruments Learn DriverLINX an interactive learning and demonstration program for DriverLINX that includes a Digital Storage Oscilloscope Source Code for the sample programs DriverLINX Application Programming Interface files application programming interface files for the DAS 1...

Page 22: ...ct form factor RMT 02 Rack mount enclosure for the STA 1800U accessory SSH 8 An 8 channel 12 bit simultaneous sample and hold accessory for DAS 1800ST Series boards Refer to the SSH 8 User s Guide for more information MB Series modules and MB01 02 backplanes Plug in isolated signal conditioning modules and backplanes Refer to the MB Series User s Guide for more information EXP 1800 A 16 channel ex...

Page 23: ...to form a daisy chain of EXP 1800s this cable is available in two lengths as follows the CAB 50 is 4 inches long and the CAB 50 1 is 18 inches long CACC 2000 A 24 inch ribbon cable for daisy chaining additional STA 1800U accessories to the first STA 1800U or additional EXP 1800 accessories to the first EXP 1800 C 1800 An 18 inch ribbon cable with two 37 pin female D type connectors for connecting ...

Page 24: ...tions and to enable you to make the best use of your board The block diagram in Figure 2 1 represents the basic DAS 1800ST HR Series boards Figure 2 2 is a block diagram of the DAS 1800ST DA Series boards and Figure 2 3 is a block diagram of the DAS 1802HR DA board Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOURCE www artisan scientific com Artisan Technology Group Quality Instru...

Page 25: ...ler Xtal Osc Buffer Latch Chan 0 0 Chan 7 15 GEXT MUX 7 4 82C54 Timer Counter TGOUT SSHO XPCLK TGIN DI 3 0 DO 3 0 15V 15V 5V ISA AT Bus 16 bit Local Control Bus Note The sampling ADC is 12 bit for DAS 1800ST Series boards and 16 bit for DAS 1802HR boards Figure 2 1 Block Diagram of Basic DAS 1800ST HR Series Boards Analog Inputs 8 Diff or 16 S E DOSTB Sampling ADC Artisan Scientific Quality Instru...

Page 26: ...Xtal Osc Buffer Latch Chan 0 0 Chan 7 15 GEXT MUX 7 4 82C54 Timer Counter TGOUT SSHO XPCLK TGIN DI 3 0 DO 3 0 15V 15V 5V ISA AT Bus 16 bit Local Control Bus Figure 2 2 Block Diagram of DAS 1800ST DA Series Boards Analog Inputs 8 Diff or 16 S E DOSTB 12 Bit Sampling ADC ODAC 0 DAC 0 12 Bits ODAC 1 DAC 1 12 Bits ODAC 2 DAC 2 12 Bits ODAC 3 DAC 3 12 Bits Artisan Scientific Quality Instrumentation Gua...

Page 27: ...r 2 Address Decode Select Prescaler Xtal Osc Buffer Latch Chan 0 0 Chan 7 15 GEXT MUX 7 4 82C54 Timer Counter TGOUT SSHO XPCLK TGIN DI 3 0 DO 3 0 15V 15V 5V ISA AT Bus 16 bit Local Control Bus Figure 2 3 Block Diagram of DAS 1802HR DA Boards Analog Inputs 8 Diff or 16 S E DOSTB 16 Bit Sampling ADC ODAC 0 DAC 0 16 Bits ODAC 1 DAC 1 16 Bits Artisan Scientific Quality Instrumentation Guaranteed 888 8...

Page 28: ...asure the difference between two signals Single ended inputs are referred to a common ground also called common mode ground reference When you connect single ended inputs to an STA 1800U accessory you can use the accessory s LL GND or U_CM MD screw terminals for your common mode ground reference You specify your choice using DriverLINX software see DriverLINX Configuration Notes on page C 1 Genera...

Page 29: ...urrent monitoring is to connect a loop with a 250Ω resistor to ground the resistor yields a 1 to 5V output in this current range This method works but uses only 80 of the input range when connected to a 0 to 5V range A better way is to use a 312 5Ω resistor and refer all measurements to 1 25V The actual output voltage then ranges from 1 25V to 6 25V however since the amplifier low side is connecte...

Page 30: ...S 1800ST HR Series boards are discussed in the following sections Channel Expansion If you require additional analog input channels you can configure your DAS 1800ST HR Series boards for single ended inputs and attach up to 16 EXP 1800 expansion accessories or up to 16 MB02 backplanes Either option can increase your input capacity to 256 channels You can daisy chain EXP 1800 expansion accessories ...

Page 31: ...ould not use a gain of 50 with a DAS 1802HR board as you may get less than satisfactory resolution This line carries the channel gain settings from the channel gain QRAM through the main I O connector of DAS 1800ST HR Series boards Gains and Ranges The available input gains and their corresponding ranges are listed in Table 2 1 for the DAS 1801ST boards and in Table 2 2 for the DAS 1802ST HR board...

Page 32: ...the advantages of increasing total system throughput and reducing noise If you are not using all the channels you can make a particular channel gain entry twice to allow for settling time Consequently you will ignore the results of the first entry If you are measuring steady state signals do not use the channel gain queue Instead use software to step through the channels and perform single channel...

Page 33: ... are best used with signal conditioning Use the 20mV 0 to 20mV 100mV and 0 to 100mV ranges with the differential input mode The following tables show throughput for various configurations Note that these throughputs are based on driving the input with an ideal voltage source The output impedance and drive of the source are far more critical when making large gain changes between two channels whose...

Page 34: ...m Throughput 10 0V 312 5 ksamples s 5 00V 5 00V 312 5 ksamples s 2 50V 312 5 ksamples s 1 25V 312 5 ksamples s 1 00V 312 5 ksamples s 100mV 312 5 ksamples s 20mV 75 ksamples s Table 2 4 Maximum Throughput for DAS 1800ST Series Boards Unipolar Mode Fixed Gain DAS 1801ST Input Range DAS 1802ST Input Range Maximum Throughput 0 to 10 0V 312 5 ksamples s 0 to 5 00V 0 to 5 00V 312 5 ksamples s 0 to 2 50...

Page 35: ...es s 312 5 ksamples s 70 ksamples s From 100mV 200 ksamples s 312 5 ksamples s 312 5 ksamples s 70 ksamples s From 20mV 70 ksamples s 70 ksamples s 70 ksamples s 75 ksamples s Table 2 6 Maximum Throughput for DAS 1801ST Boards Unipolar Mode Change of Gain Maximum Throughput To 0 to 5 0V To 0 to 1 0V To 0 to 100mV To 0 to 20mV From 0 to 5 0V 312 5 ksamples s 200 ksamples s 200 ksamples s 50 ksample...

Page 36: ...mples s 312 5 ksamples s From 2 50V 312 5 ksamples s 312 5 ksamples s 312 5 ksamples s 312 5 ksamples s From 1 25V 312 5 ksamples s 312 5 ksamples s 312 5 ksamples s 312 5 ksamples s Table 2 8 Maximum Throughput for DAS 1802ST Boards Unipolar Mode Change of Gain Maximum Throughput To 0 to 10 0V To 0 to 5 0V To 0 to 2 5V To 0 to 1 25V From 0 to 10 0V 312 5 ksamples s 312 5 ksamples s 250 ksamples s...

Page 37: ... should acquire all data without changing the channel Table 2 9 Maximum Throughput for DAS 1802HR Boards Bipolar Mode Change of Gain Maximum Throughput To 10 0V To 5 0V To 2 50V To 1 25V From 10 0V 98 ksamples s 60 ksamples s 60 ksamples s 60 ksamples s From 5 0V 60 ksamples s 98 ksamples s 60 ksamples s 60 ksamples s From 2 50V 60 ksamples s 60 ksamples s 98 ksamples s 60 ksamples s From 1 25V 60...

Page 38: ... rate is gain sensitive as explained in Maximum Achievable Throughput Rates on page 2 9 Burst mode with SSH In burst mode with SSH each pulse from the pacer clock starts a simultaneous scan of all channels The conversion rate equals the rate of the burst mode conversion clock The sample rate which is the rate at which a single channel is sampled equals the pacer clock rate One extra tick of the bu...

Page 39: ...is sampled The following pacer clock sources are available for DAS 1800ST HR Series boards Software DAS 1800ST HR Series boards allow you to acquire a single sample under program control Hardware internal clock source The internal pacer clock source uses the onboard 82C54 counter timer and a crystal controlled 5MHz time base The onboard pacer clock uses two cascaded counters of the 82C54 The maxim...

Page 40: ... ksamples s one sample every 10µs for the DAS 1800HR Series If you are using an external clock make sure that it does not initiate conversions at a faster rate than the ADC can handle If you are acquiring samples from multiple channels the maximum sampling rate for each channel is equal to the maximum allowable conversion rate divided by the number of channels see Maximum Achievable Throughput Rat...

Page 41: ...U connectors J1 and J2 Trigger types are as follows Positive edge trigger Triggering occurs on the rising edge of the trigger signal Negative edge trigger Triggering occurs on the falling edge of the trigger signal The actual points at which conversions begin depend on whether the clock source is internal or external as follows Internal clock source The 82C54 counter timer is idle until the trigge...

Page 42: ...rogrammed for negative edge idle state count count count count Conversions begin with internal clock source Internal clock source External clock source Conversions begin with external source programmed for negative edge idle state count count count count Conversions begin with internal clock source Internal clock source External clock source Trigger occurs on positive edge TGIN input Artisan Scien...

Page 43: ... Trigger Acquisition In about trigger acquisition the data of interest appears both before and after a specific digital trigger event Acquisition starts on an internal external analog or external digital trigger event and continues until a specified number of samples has been acquired after the digital trigger event About trigger acquisition is available with DMA mode operations only Post Trigger ...

Page 44: ...s inactive therefore with external clocking conversions are synchronized to the external clock Figure 2 7 illustrates the use of a positive polarity hardware gate with both a negative edge external clock and an internal clock Figure 2 7 Hardware Gate 1st conversion 2nd conversion 3rd conversion gate active gate inactive conversions off gate active conversions on no conversion Digital gate source p...

Page 45: ... is executing other instructions The ability to run independent of the CPU and at high transfer rates makes DMA an attractive method for transferring data in data acquisition systems DAS 1800ST HR Series boards use DMA channels 5 6 and 7 to perform single or dual channel DMA transfers of A D data from the board to memory When you set up your configuration file you can specify these channels indivi...

Page 46: ...rd contains two 16 bit DACs Each DAC has a fixed voltage range of 10V and powers up to 0V at reset Data coding is 2 s complement The two DACs have a capacitive load drive up to 100µF and an output current drive of up to 5mA short circuit current is about 25mA You can use interrupts generated by the onboard pacer clock to pace the analog output when the analog inputs are either disabled or timed by...

Page 47: ...ing Relationship between Data from DO0 to DO3 and Latch Strobe DOSTB Using Digital Control Signal TGOUT When using the onboard internal pacer clock you can use the trigger gate output signal TGOUT pin 20 of the main I O connector or pin 39 of STA 1800U connectors J1 and J2 to synchronize other DAS 1800 Series boards or to trigger or gate user specific events as follows When using digital control s...

Page 48: ...OUT is less than 1µs Note You can use TGOUT only when the onboard internal pacer clock is timing conversions Figure 2 9 Timing for the TGOUT Signal Software enables conversions Software disables conversions 1µs c Internal Trigger Gate 200ns typical b TGIN as a Gate 200ns typical a TGIN as a Trigger Remains active until conversions are disabled by software TGOUT TGIN TGOUT TGIN TGOUT Internal Trigg...

Page 49: ...remains high until 200ns after the ADC starts conversion of the last channel in the burst SSHO goes low and remains low until another pacer clock pulse To ensure adequate sample time for the SSH hardware the pacer clock period should be set as follows Pacer Clock Period Number of Channels 1 Burst Period When you are not using the SSHO signal for SSH hardware control you can use it as a converter c...

Page 50: ...l to each board if enough levels are available Assign the same interrupt level to some boards and different interrupt levels for each of the remaining boards Note Some computers can accept as many as three DAS 1800 Series boards Assign one interrupt level to be shared by all boards active edge 300ns typical a SSHO with External Pacer Clock 300ns typical b SSHO with Internal Pacer Clock External Cl...

Page 51: ...respond accordingly Power DAS 1800ST HR Series boards use the 5V and the 12V provided by your computer An onboard DC DC converter develops 15V at a maximum current output of 60mA for external use In addition to the 15V the DAS 1800ST HR Series boards supply 5V from the computer to a pin on the main I O connector at up to a maximum of 1 0A Artisan Scientific Quality Instrumentation Guaranteed 888 8...

Page 52: ...ld the wrapped board If you are not equipped with a grounded wrist strap discharge static electricity by holding the wrapped board in one hand while placing your other hand firmly on a metal portion of the computer chassis your computer must be turned off but grounded 2 Carefully unwrap your board from its anti static wrapping material You may store the wrapping material for future use 3 Inspect t...

Page 53: ...tructures Installing the DAS 1800ST HR Series Standard Software Package Important Before you begin installing any hardware or software for the DAS 1800ST HR read the DriverLINX Installation and Configuration Guide and the Appendix F Configuration and Implementation Notes for Keithley DAS 1800 manuals that are packaged with the DriverLINX software They are accessed from the DriverLINX CD ROM after ...

Page 54: ...quisition applications that require DriverLINX Install Interfaces This optional component installs the files and example programs that needed to develop custom applications for DriverLINX using C C Visual Basic Delphi and LabVIEW Install LabVIEW This component installs the files and programs needed to develop applications for DriverLINX using LabVIEW Install Documentation This optional component i...

Page 55: ...als appropriate to the DAS 1800 installation and read them before installing your DAS 1800 board or configuring DriverLINX Installation and Configuration Appendix F Configuration and Implementation Notes for Keithley DAS 1800 DriverLINX Technical Reference Manual DriverLINX Analog I O Programming Guide DriverLINX Digital I O Programming Guide DriverLINX Counter Timer Programming Guide Appendix I O...

Page 56: ...n in Figure 3 1 Figure 3 1 Location of Base Address Switch To reset this switch for another address use DriverLINX software configuration see DriverLINX Configuration Notes on page C 1 to determine the new switch settings The settings for the base address switch must match the settings in the DriverLINX program Hex value when switch is in down position 200 100 80 20 8 40 10 Value of Hex 300 768 de...

Page 57: ... secure the board in the selected slot 6 Replace the computer cover 7 Turn on power to the computer You can use the DAS 1800 Series DriverLINX Analog I O Panel see Section 5 to check board operation Configuring the DAS 1800ST HR Board with DriverLINX Note Be sure to note and follow all programming differences between installations for Windows NT and Windows 95 98 Be sure to make note of the config...

Page 58: ...0H to 043H 8253 Timer 060H to 063H 8255 PPI XT 060H to 064H 8742 Controller AT 060H to 06FH 8042 Keyboard controller 070H to 071H CMOS RAM and NMI mask register AT 080H to 08FH DMA page registers 0A0H to 0A1H 8259 PIC 2 AT 0A0H to 0AFH NMI mask register XT 0C0H to 0DFH 8237 DMA 2 AT word mapped 0F0H to 0FFH 80287 Numeric processor AT 170H to 177H Hard disk controller 1 1F0H to 1F8H Hard disk contr...

Page 59: ...INX program group to tell DriverLINX how you configured your DAS 1800ST HR 2B0H to 2DFH EGA 2E0H to 2EFH GPIB AT 2E8H to 2EFH Serial port 2F8H to 2FFH Serial port 300H to 31FH Prototype card 320H to 32FH Hard disk XT 370H to 377H Floppy disk controller 2 378H to 37FH Parallel printer 380H to 38FH SDLC 3A0H to 3AFH SDLC 3B0H to 3BBH MDA 3BCH to 3BFH Parallel printer 3C0H to 3CFH VGA EGA 3D0H to 3DF...

Page 60: ...nfiguration Dialog Box 7 From the Model list select the model name for your DAS 1800 Series board you are configuring 8 If the value displayed in the Address edit box is not correct type the correct value into the box You may enter the address in decimal or hexadecimal using the c notation for hex that is 768 decimal 0x300 hexadecimal 9 Choose the correct options for the Analog Digital and Counter...

Page 61: ...ration change DriverLINX runs a diagnostic program to verify the operation and accuracy of the configuration settings You are now ready to make I O connections Refer to Section 4 for descriptions of common I O accessories and connections for DAS 1800ST HR Series Boards Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOURCE www artisan scientific com Artisan Technology Group Quality In...

Page 62: ... the following components Two 50 pin male connectors J1 and J2 Use J1 for cabling to the main I O connector of DAS 1800ST HR Series board use J2 for cabling to a second STA 1800U 53 labeled screw terminals for connections from sensor outputs and test equipment Four 26 pin male connectors for cabling to MB02 backplanes One 37 pin male connector for cabling to SSH 8 accessories or to an MB01 backpla...

Page 63: ...ard to connector J1 of the STA 1800U as shown in Figure 4 2 Figure 4 2 Attaching an STA 1800U Accessory to a DAS 1800ST HR Series Board J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 J11 DAS 1800ST HR Series Board STA 1800U Accessory CDAS 2000 or CDAS 2000 S Cable J1 Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOURCE www artisan scientific com Artisan Technology Group Quality Instrumentation Guar...

Page 64: ...30 CH04 HI 29 CH03 HI 28 CH02 HI 27 CH01 HI 26 CH00 HI TGOUT 20 DOSTB 19 DO 3 18 DO 1 17 DI 3 16 D GND 25 5V 24 MUX 07 23 MUX 05 22 MUX 03 21 DI 1 15 D GND 14 15V Return 13 15V 12 ODAC3 Note 2 11 ODAC2 Note 2 10 CH07 LO or CH15 HI 09 CH06 LO or CH14 HI 08 CH05 LO or CH13 HI 07 CH04 LO or CH12 HI 06 CH03 LO or CH11 HI 05 CH02 LO or CH10 HI 04 CH01 LO or CH09 HI 03 CH00 LO or CH08 HI 02 User Common ...

Page 65: ... DI 1 29 D GND 27 15V Return 25 15V 23 ODAC3 Note 2 21 ODAC2 Note 2 19 CH07 LO or CH15 HI 17 CH06 LO or CH14 HI 15 CH05 LO or CH13 HI 13 CH04 LO or CH12 HI 11 CH03 LO or CH11 HI 09 CH02 LO or CH10 HI 07 CH01 LO or CH09 HI 05 CH00 LO or CH08 HI 03 User Common Mode U_CM MD 01 40 SSHO 38 XPCLK 36 DO 2 34 DO 0 32 DI 2 50 D GND 48 5V 46 MUX 06 44 MUX 04 42 TGIN 30 DI 0 28 GEXT 26 15V Return 24 15V 22 O...

Page 66: ...5V 23 ODAC1 Note 1 22 ODAC3 Note 2 21 CH06 LO or CH14 HI 15 CH06 HI 14 CH05 LO or CH13 HI 13 CH05 HI 12 CH04 LO or CH12 HI 11 CH04 HI 10 CH03 LO or CH11 HI 09 CH03 HI 08 CH02 LO or CH10 HI 07 CH02 HI 06 CH01 LO or CH09 HI 05 CH01 HI 04 CH00 LO or CH08 HI 03 CH00 HI 02 User Common Mode U_CM MD 01 45 MUX 07 44 MUX 04 43 MUX 05 42 TGIN 41 MUX 03 50 D GND 49 D GND 48 5V 47 5V 46 MUX 06 40 SSHO 39 TGOU...

Page 67: ...ted through an STA 1800U Note that attached SSH 8 accessories must be set as slaves Attach an SSH 8 to a STA 1800U using a C 1800 cable as shown in Figure 4 7 Refer to the SSH 8 User s Guide for more information Figure 4 7 Attaching an SSH 8 to a DAS 1800ST Series Board through an STA 1800U STA 1800U Accessory SSH 8 Accessory C 1800 Cable J1 J3 P1 DAS 1800ST Series Board CDAS 2000 or CDAS 2000 S C...

Page 68: ...Backplanes A DAS 1800ST HR Series board configured for single ended inputs and working through multiple STA 1800U accessories can support up to 16 MB02 backplanes A single STA 1800U contains receptacles J4 to J7 for up to four MB02 backplane cables Cabling for the four MB02 backplanes attached to an STA 1800U accessory is shown in Figure 4 9 STA 1800U MB01 Accessory DAS 1800ST HR Series Board J1 J...

Page 69: ... XX MB XX MB XX 0 1 15 MB02 MB XX MB XX MB XX 0 1 15 MB02 MB XX MB XX MB XX 0 1 15 MB02 MB XX MB XX MB XX 0 1 15 MB02 To J5 of the STA 1800U To J6 of the STA 1800U To J7 of the STA 1800U To J4 of the STA 1800U You can connect up to four MB02 backplanes to the STA 1800U C 2600 Cable C 2600 Cable C 2600 Cable C 2600 Cable Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOURCE www artisa...

Page 70: ...re information on MB02 backplanes and modules refer to the MB Series User s Guide STA 1800U J1 T o B o a r d 2 o f M B 0 2 G r o u p 1 T o B o a r d 1 o f M B 0 2 G r o u p 1 T o B o a r d 3 o f M B 0 2 G r o u p 1 T o B o a r d 4 o f M B 0 2 G r o u p 1 C 2600 Cables STA 1800U CACC 2000 Cables To Next STA 1800U J2 S e t f o r C H 1 S e t f o r C H 3 S e t f o r C H 2 S e t f o r C H 0 S e t f o r...

Page 71: ...ion Accessories You can attach up to 16 EXP 1800 expansion accessories to a DAS 1800ST HR Series board however some of the added EXP 1800s require external power For more information on the EXP 1800 refer to the EXP 1800 User s Guide J1 EXP 1800 EXP 1800 CAB 50 or CAB 50 1 Cable DAS 1800ST HR Series Board CDAS 2000 or CDAS 2000 S Cable CAB 50 or CAB 50 1 Cable Artisan Scientific Quality Instrument...

Page 72: ... to 16 single ended inputs DAS 1800ST HR Series boards contain separate grounds for low level analog 15V power return and digital signals An analog ground LL GND or U_CM MD depending on the input configuration is for analog signals a 15V return is for analog power and a digital ground DGND is for digital signals and the 5V power supply return If using a differential input configuration use LL GND ...

Page 73: ...Induced noise from RF and magnetic fields can easily exceed tens of microvolts even on one or two foot cables shielded cable eliminates this problem Avoid bi metallic junctions in the input circuitry For example the kovar leads used on reed relays typically have a thermal emf to copper of 40µV C Thermals can introduce strange random variations caused by air currents and so on Consider filtering Th...

Page 74: ...on on single ended ground connections refer to Low Side Reference Selection for Single Ended Inputs on page 2 6 Figure 4 12 Wiring a Signal Source to a DAS 1800ST HR Series Board Configured for Single Ended Inputs Note When wiring signals to the analog input channels you are advised to wire all unused channels to LL GND or U_CM MD to prevent the input amplifiers from saturating and ensure the accu...

Page 75: ...l Inputs Channel n High Floating Signal Source LL GND Rb Rb Rs Channel n Low Where Rs 100Ω Rb 2000 Rs Channel n High Floating Signal Source LL GND Rb Rs Channel n Low Where Rs 100Ω Rb 1000 Rs Channel n High DC Supply Channel n Low LL GND Bridge Rs Rv DAS 1800ST HR Series Board DAS 1800ST HR Series Board DAS 1800ST HR Series Board Artisan Scientific Quality Instrumentation Guaranteed 888 88 SOURCE ...

Page 76: ...signal source is grounded the signal source ground and the DAS 1800ST HR Series board ground may not be at the same voltage level because of the distances between equipment wiring and the building wiring In this situation ground loop problems can occur if you tie the two grounds together and the two grounds are not at the same potential The difference in potential is referred to as a common mode v...

Page 77: ...rminals through corresponding screw terminals of an STA 1800U Note that the screw terminals for the DAC outputs are labeled differently for Revisions 1 and 2 of the STA 1800U These differences are shown in Table 4 2 Table 4 2 STA 1800U Labels for DAC Outputs DAC Output Number Rev 1 Label Rev 2 Label 0 for DAS 1800ST HR DA Series DAC0 OUT ODAC0 1 for DAS 1800ST HR DA Series DAC1 OUT ODAC1 2 for DAS...

Page 78: ...page 2 26 Use the SSHO terminal for connecting the SSHO signal TGIN The trigger gate input described in the next section and in Using Digital Control Signal TGOUT on page 2 24 Refer also to Triggers on page 2 18 and to Gates on page 2 20 Use the TGIN terminal for connecting an external digital trigger or hardware gate signal TGOUT The trigger gate output described in the next section and in Using ...

Page 79: ...ion schemes for synchronizing multiple boards Both schemes use the onboard internal pacer clock to time acquisitions Figure 4 15 Two Connection Schemes for Synchronizing Multiple Boards In scheme 1 you connect the trigger gate inputs of the three boards together and supply the trigger or gate input A D conversions on each board start 400 100ns from the active edge of the trigger input All conversi...

Page 80: ...ave boards The delay of board 0 conversions is caused by a protection feature built into the register that creates software triggered conversions the function of the protection feature is to prevent false conversions If you use a hardware trigger for board 0 of scheme 2 board 0 triggers conversions in all three boards immediately Note that TGOUT is an active high going signal Therefore you must pr...

Page 81: ...erator Output DC Level voltages using the Level Control The Analog I O Panel is useful for Testing the DAS 1800ST HR DriverLINX installation and configuration Verifying signal inputs to your DAS 1800ST HR board Sending test signals to external devices To access this DriverLINX Analog I O Panel 1 Start the Analog I O Panel with the AIO Panel item on the Windows start menu 2 Click the button in the ...

Page 82: ...l Mapping section to map them to different channel numbers You can now select the Scope Meter SST and Level Control tabs to operate your DAS 1800ST HR board Test Panel Application Depending upon the DriverLINX drivers you have installed on your system you will have one or more of the following example applications Single Value AI for analog input Single Value AO for analog output PIO Panel for dig...

Page 83: ...S 1800ST Series boards accurate to 6 digits such as a Keithley Instruments Model 196 A digital voltmeter for the DAS 1800HR Series boards accurate to 7 digits such as a Keithley Instruments Model 2001 An adjustable 10 V voltage calibrator such as a Keithley Instruments Model 236 An STA 1800U with a CDAS 2000 cable an STP 50 with a CDAS 2000 cable or a user designed interface The appropriate number...

Page 84: ...TP3 TP2 R5 R4 R3 R11 R10 TP4 TP2 R20 R16 R13 R12 TP5 TP3 TP1 U n i p o l a r G a i n V O U T B i p o l a r O f f s e t U n i p o l a r O f f s e t R T I O f f s e t A G N D D G N D B i p o l a r O f f s e t G a i n V O U T U n i p o l a r O f f s e t R T I O f f s e t A G N D b Basic DAS 1802HR Board A D C S T B A D C S T A T B i p o l a r G a i n Artisan Scientific Quality Instrumentation Guarant...

Page 85: ... r O f f s e t R T I O f f s e t A G N D D G N D B i p o l a r O f f s e t G a i n V O U T U n i p o l a r O f f s e t R T I O f f s e t A G N D b DAS 1802HR DA Board D A C 0 O f f s e t D A C 0 G a i n D A C 1 O f f s e t D A C 1 G a i n R31 R32 R35 R36 R8 R1 R2 R3 R4 R5 R6 R7 D A C 0 O f f s e t D A C 0 G a i n D A C 1 O f f s e t D A C 1 G a i n D A C 2 O f f s e t D A C 2 G a i n D A C 3 O f f...

Page 86: ...arameters in the setup panel to get the correct instructions Logical Device Board s device number model and address Accessory Connection method used to connect the board to the calibration stimulus Shorted Channel Input channel to be shorted high to low Voltage Channel Input channel to use to apply the various calibration voltage levels Calibration Range Input range to be calibrated Artisan Scient...

Page 87: ... in the system event log to assist in predicting and troubleshooting hardware and software problems DriverLINX uses the event log to report problems during driver loading or unexpected system errors The event log can assist in troubleshooting resource conflicts and DriverLINX configuration errors If you are having trouble configuring or initializing a Logical Device check the event log for informa...

Page 88: ...re dialog box Invalid IRQ level or Invalid DMA level Selected level does not match hardware setting conflicts with another board s IRQ DMA levels or is dedicated to the computer s internal functions COM port disk drive controller network adapter etc Hardware does not match configuration Operating mode range switch or jumper setting does not match selection s made in the DriverLINX Device Configura...

Page 89: ...The board configuration is incorrect Check the remaining settings in the configuration file The board is incorrectly aligned in the accessory slot Check the board for proper seating The board is damaged Contact Keithley for technical support see page 7 6 Intermittent operation The most common cause of this problem is that the I O bus speed is in excess of 8MHz Reduce I O bus speed to a maximum of ...

Page 90: ...nected to channel being read Check the transducer connections Board is set for single ended mode while transducer is a differential type or vice versa Check transducer specifications and board configuration Computer does not boot Board not seated properly Check the installation of the board The base address setting of the DAS 1800ST HR Series board conflicts with that of another system resource Ch...

Page 91: ...board is obviously damaged refer to Technical Support on page 7 6 for information on returning the board 4 With the DAS 1800ST HR Series board out of the computer check the computer for proper operation Power up the computer and perform any necessary diagnostics At this point if you have another DAS 1800ST HR Series board that you know is functional you can test the slot and I O connections using ...

Page 92: ...are functional use the functional board to check the I O connections Reconnect and check the operation of the I O connections one at a time 4 If operation fails for an I O connection check the individual inputs one at a time for shorts and opens 5 If operation remains normal to this point the problem is in the DAS 1800ST HR Series board s originally in the computer If you were using more than one ...

Page 93: ...of RAM Video system BIOS type ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ Operating System DOS version Windows version ___________________ ___________________ Software package Name Serial Version Invoice Order ___________________ ___________________ ___________________ ___________________ Compiler if applicable Language Ma...

Page 94: ...e Repackage the equipment using the original anti static wrapping if possible and handle it with ground protection Ship the equipment to ATTN RMA _______ Repair Department Keithley Instruments Inc 28775 Aurora Road Cleveland Ohio 44139 1891 Telephone 1 888 KEITHLEY FAX 440 248 6168 Note If you are submitting your equipment for repair under warranty you must include the invoice number and date of p...

Page 95: ...r 0 0 to 5 0V for gain 1 0 0 to 1 0V for gain 5 0 0 to 100mV for gain 50 0 0 to 20mV for gain 250 5 0V for gain 1 1 0V for gain 5 100mV for gain 50 20mV for gain 250 0 0 to 10V for gain 1 0 0 to 5 0V for gain 2 0 0 to 2 5V for gain 4 0 0 to 1 25V for gain 8 10V for gain 1 5 0V for gain 2 2 5V for gain 4 1 25V for gain 8 Absolute accuracy Typical Maximum error 0 01 of reading 1 LSB for all ranges 0...

Page 96: ...80 dB for gain 2 80 dB for gain 4 86 dB for gain 8 Input overvoltage 15V continuous powered 15V continuous unpowered Noise2 Bipolar electrical noise in counts Unipolar electrical noise in counts p p 1 rms 0 1 for gain 1 p p 1 rms 0 1 for gain 5 p p 4 rms 0 5 for gain 50 p p 8 rms 1 0 for gain 250 p p 1 rms 0 1 for gain 1 p p 1 rms 0 1 for gain 5 p p 6 rms 0 9 for gain 50 p p 9 rms 1 4 for gain 250...

Page 97: ...so makes the rms level 0 5 LSBs Table A 2 Analog Input Specifications for DAS 1800HR Series Feature DAS 1802HR HR DA Number of channels Software selectable as 8 differential or 16 single ended Input mode Software selectable as unipolar or bipolar Resolution 16 bits 1 part in 65 536 or 15 ppm Data format 16 bit 2 s complement FIFO size 1024 word Channel Gain Control Channel QRAM Gain QRAM 256 X 8 b...

Page 98: ... Gain 5µV C maximum for bipolar 5µV C maximum for unipolar 7 5 ppm C Linearity1 Integral 1 5 LSBs maximum Differential 1 LSB Throughput Single channel 100 ksamples s Multiple channels no gain change 98 ksamples s Multiple channels w gain change 60 ksamples s for gains of 1 to 8 Refer to Maximum Achievable Throughput Rates on page 2 9 Input Impedance 100MΩ in parallel with 75pF Input bias current 2...

Page 99: ...5 rms 0 7 for gain 4 p p 3 0 rms 0 8 for gain 8 DMA Burst demand mode DMA on FIFO NOT EMPTY Programmable DMA levels 5 6 and 7 Single dual DMA modes Interrupt levels On FIFO NOT EMPTY single slow transfer On FIFO HALF FULL REPL MOV On counter 2 terminal count On data overflow Programmable interrupt levels 3 5 7 10 11 and 15 Shareable pulsed interrupts Burst Mode Acquisition Control Rate Length Othe...

Page 100: ... using counter 0 Pacer Clock Internal External 32 bit counter 82C54 Programmable edge sense Support for board to board synchronization XTRIG input 4 bit digital input port 4 b latched digital output port with latch strobe 1 Monotonicity is guaranteed to 16 bits 2 The figures in the table show the electrical noise introduced by the analog front end and include the quantization noise Table A 2 Analo...

Page 101: ...ft Offset Gain 15ppm C maximum 30ppm C maximum Glitch energy 200nV seconds typical area 200mV peak Capacitive load drive 100µF Power up DACs power up to 0 0V at reset Table A 4 Analog Output Specifications for DAS 1802HR DA Attribute Specification Type 16 bit voltage out DAC Coding 16 bit 2 s complement signed 16 bit integer Output range 10 0000V to 9 999695V Integral non linearity 1 LSB typical 2...

Page 102: ...to MUX 7 VOH min 2 7V IOH 400µA VOL max 0 5V IOL 8mA Digital input signals DI 0 to DI 31 XPCLK and TGIN2 VIH min 2 0V IIH max 20µA VIL max 0 8V IIL max 0 2mA 1 Digital inputs DI 0 to DI 3 are pulled up with a 10kΩ resistor 2 On the DAS 1800ST HR Series basic models inputs TGIN and XPCLK are not pulled up on the DA models inputs TGIN and XPCLK are pulled up with 10kΩ resistors Digital output strobe...

Page 103: ... Table A 7 Power Supply Requirements for the DAS 1801ST DA DAS 1802ST DA and DAS 1802HR DA Attribute DAS 1801ST DA DAS 1802ST DA DAS 1802HR DA 5VDC input 483mA typical 768mA maximum 610mA typical 850mA maximum 12VDC input 378mA typical 700mA maximum 350mA typical 550mA maximum Maximum current available at the 15V outputs1 1 Subtract the current output of the DACs from the value given here 70mA 60m...

Page 104: ...2 CH06 HI 31 CH05 HI 30 CH04 HI 29 CH03 HI 28 CH02 HI 27 CH01 HI 26 CH00 HI TGOUT 20 DOSTB 19 DO 3 18 DO 1 17 DI 3 16 D GND 25 5V 24 MUX 07 23 MUX 05 22 MUX 03 21 DI 1 15 D GND 14 15V Return 13 15V 12 ODAC3 Note 2 11 ODAC2 Note 2 10 CH07 LO or CH15 HI 09 CH06 LO or CH14 HI 08 CH05 LO or CH13 HI 07 CH04 LO or CH12 HI 06 CH03 LO or CH11 HI 05 CH02 LO or CH10 HI 04 CH01 LO or CH09 HI 03 CH00 LO or CH...

Page 105: ...r CH13 HI 13 CH04 LO or CH12 HI 11 CH03 LO or CH11 HI 09 CH02 LO or CH10 HI 07 CH01 LO or CH09 HI 05 CH00 LO or CH08 HI 03 User Common Mode U_CM MD 01 40 SSHO 38 XPCLK 36 DO 2 34 DO 0 32 DI 2 50 D GND 48 5V 46 MUX 06 44 MUX 04 42 TGIN 30 DI 0 28 GEXT 26 15V Return 24 15V 22 ODAC1 Note 1 20 ODAC0 Note 1 18 LL GND 16 CH07 HI 14 CH06 HI 12 CH05 HI 10 CH04 HI 08 CH03 HI 06 CH02 HI 04 CH01 HI 02 CH00 H...

Page 106: ...able from an MB02 backplane The pin assignments for J4 to J7 are shown in Figure B 4 37 36 35 34 33 32 31 30 29 28 27 26 20 19 18 17 16 25 24 23 22 21 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 5V TGOUT DO 3 DO 1 DI 3 DI 1 D GND ODAC0 CH07 LO or CH15 HI CH06 LO or CH14 HI CH05 LO or CH13 HI CH04 LO or CH12 HI CH03 LO or CH11 HI CH02 LO or CH10 HI CH01 LO or CH09 HI CH00 LO or CH08 HI LL GND SSHO DO 2 DO ...

Page 107: ...X 07 MUX 05 LL GND CH01 HI CH05 HI CH01 LO CH09 HI CH05 LO CH13 HI 25 23 21 19 17 15 13 11 9 7 5 3 1 26 24 22 20 18 16 14 12 10 8 6 4 2 Connector J6 and Jumper Pad J10 DGND DGND LLGND MUX04 MUX06 MUX07 MUX05 LLGND CH02 HI CH06 HI CH02 LO CH10 HI CH06 LO CH14 HI 25 23 21 19 17 15 13 11 9 7 5 3 1 26 24 22 20 18 16 14 12 10 8 6 4 2 Connector J7 and Jumper Pad J11 DGND DGND LLGND MUX04 MUX06 MUX07 MUX...

Page 108: ... Analog Input Subsystem describes how to configure DAS 1800ST HR analog inputs Analog Output Subsystem describes how DriverLINX is used to configure analog outputs Digital Input and Output Subsystems describes how DriverLINX is used for configuring digital inputs and outputs Counter Timer Subsystem describes some of DriverLINX counter timer functions Artisan Scientific Quality Instrumentation Guar...

Page 109: ...elect the base address with a DIP switch All 12 bit versions share the same maximum A D conversion rate of 333kHz The 16 bit versions DAS 1802HR and DAS 1802HR DA have a maximum A D conversion rate of 100kHz All DAS 1800 models include a 1K sample FIFO buffer and support burst mode sampling software programmable analog input gain and have a hardware channel gain queue The channel gain queue suppor...

Page 110: ...uration is software programmable for 16 single ended or 8 differential analog inputs On the DAS 1800HC A D channel configuration is software programmable for 64 single ended or 32 differential analog inputs A D Volts You must specify the minimum and maximum analog input full scale voltages at unity gain For the DAS 1801 boards the minimum voltage is 5V and the maximum voltage is 4 9976V For the DA...

Page 111: ... are 5 6 or 7 Two devices can share DMA levels only if you do not use them at the same time Clock The counter timer input from the master clock for analog input and output for DAS 1800AO has a fixed frequency of 5MHz Special Device Settings The DAS 1800 series driver has special settings To specify these settings click the Special button on the Device property page and enter them in the Configure ...

Page 112: ...ptions dialog box For each SSH 8 unit select the number in the SSH list box and enter the following configuration parameters Base channel specify which A D input channel connects to an SSH 8 unit Channel gain click on the channel and then select its SSH 8 external amplifier gain Channel offset click on the channel and then select its channel offset Disable AO recycle mode For the DAS 1800AO hardwa...

Page 113: ...tput tasks The following table summarizes the operations implemented for each of the supported modes of the DriverLINX subsystem using the Keithley DAS 1800 boards Table C 1 Modes Supported by DAS 1800 Models Subsystem Polled Interrupt DMA Other Analog Input X X X X Analog Output X X X1 X Digital Input X X X Digital Output X X X Counter Timer X Device X Artisan Scientific Quality Instrumentation G...

Page 114: ... Other Initialize Analog Output Polled Start null null null Polled 1800AO Start rate dig null cmd dig null null TC dig Interrupt2 Start Stop Status rate dig cmd dig null cmd TC dig null DMA 1800AO Start Stop Status rate dig cmd dig cmd TC dig Other Initialize Digital Input Polled Start null null null Interrupt Start Stop Status rate cmd dig cmd TC dig Other Initialize Digital Output Polled Start S...

Page 115: ...n one A D converter and a 64 channel multiplexer You can configure the A D inputs as 64 single ended or 32 differential channels The input channels labeled CH00HI B2 and CH00LO CH32 HI B3 etc are located on the 100 pin Centronics style male connector that projects through the rear panel of the computer All models provide software programmable input channel gain and a 256 location channel gain queu...

Page 116: ...rate in each mode will cause loss of data Also the duration specified in the onCount field must be within the range of 6µs 30 tics minimum 20µs for DAS 1800HR to 64µs 320 tics maximum Repeat Mode Sampling The DAS 1802HR DA provides an option to sample the same channel 1 to 4095 times before advancing to the next channel in the channel gain queue To setup repeat mode sampling choose a rate or burst...

Page 117: ...the Digital Start Event corresponds to a positive or negative edge at trigger input DI 1 TGIN B40 for DAS 1800HC and TGIN 46 for other DAS 1800 models External Gating DriverLINX implements external gates using a Timing Event with the Generator Gated by the TGIN 46 input Acquisition is active while the TGIN input is at TTL high Use DI 1 TGIN B40 for DAS 1800HC and TGIN 46 for other DAS 1800 models ...

Page 118: ...800 with 16 external multiplexers has 272 logical channels it still has only 256 physical channels Each mux supports 16 channels and the hardware electronically switches the 16 mux inputs to the one physical channel on the DAS 1800 where you attached the mux Therefore addressing a native channel 0 15 which has a mux attached is logically equivalent to directly addressing the lowest numbered channe...

Page 119: ...s 1 2 and 3 for an EXP 1800 connected to native input channel 0 add 16 32 and 48 to the channel gain list Table C 3 Table of Logical Channel Numbers for Eight External EXP 1800 Multiplexers Native Chan Mux 0 MUX 1 1 MUX 2 2 MUX 3 3 MUX 4 4 MUX 5 5 MUX 6 6 MUX 7 7 MUX 8 etc MUX Input Chan 0 16 32 48 64 80 96 112 128 1 17 33 49 65 81 97 113 129 2 18 34 50 66 82 98 114 130 3 19 35 51 67 83 99 115 131...

Page 120: ... 16 Bit ADCs 9 25 41 57 73 89 105 121 137 10 26 42 58 74 90 106 122 138 11 27 43 59 75 91 107 123 139 12 28 44 60 76 92 108 124 140 13 29 45 61 77 93 109 125 141 14 30 46 62 78 94 110 126 142 15 31 47 63 79 95 111 127 143 Table C 3 Table of Logical Channel Numbers for Eight External EXP 1800 Multiplexers cont Native Chan Mux 0 MUX 1 1 MUX 2 2 MUX 3 3 MUX 4 4 MUX 5 5 MUX 6 6 MUX 7 7 MUX 8 etc MUX I...

Page 121: ...0V range bipolar mode the voltage resolution would be For a 12 bit A D at a gain of 1 in the 0 to 10V range unipolar mode the voltage resolution would be Table C 4 Input Voltage and A D Binary Value Input Voltage A D Binary Value 10 0V 2048 0 0V 0 0 00488V 1 9 99512V 2047 Table C 5 Input Voltage and A D Binary Value Input Voltage A D Binary Value 0 0V 0 5 0V 2048 5 00244V 2049 9 99756V 4095 20V 40...

Page 122: ...le at a maximum rate of 333kHz for one channel and 312kHz for multiple channels A D Data Lost The DAS 1800 provides hardware monitoring of A D data overruns DriverLINX notifies applications that an overrun has occurred by posting an event message DL_DATALOST DriverLINX posts this message only the first time the board detects an overrun during an acquisition task The DAS 1800 hardware will stop acq...

Page 123: ...a buffers larger than 2K Alternatively for data buffers smaller than 2K samples the AO task can free run entirely from the on board DAC FIFO buffer using the board s recycle mode For the DAS AO hardware DriverLINX can automatically promote AO tasks meeting the following criteria as specified in the Service Request to run from the DAC FIFO buffer in recycle mode Mode INTERRUPT Stop Event type COMMA...

Page 124: ...ecify internal clocking using a Rate Timing Event as a rate generator RATEGEN on Logical Channel 0 channel 1 for DAS 1800AO with an internal source For hardware independence the application may specify the clock channel using the symbolic constant DEFAULTTIMER which always uses the Logical Channel assigned by hardware for analog output Synchronous Analog Input Output Clocking The DAS 1800AO is ide...

Page 125: ...r sizes and Stop Events or issue a Stop operation request for the AO task External Clocking Specify external clocking using a Rate Timing Event on channel 0 with an external clock source specified For hardware independence you can specify the hardware external trigger channel by the symbolic constant DI_EXTCLK Connect the external clock source to DI 0 XPCLK B39 for DAS 1800HC or XPCLK 44 for other...

Page 126: ... s complement data coding for the two 16 bit D A channels The output range is fixed at 10 volts The minimum DAC code is 32768 10V and the maximum code is 32767 9 9997V The DAS 1800HC uses split binary data coding for the two 12 bit D A channels The output range is fixed at 10 volts The minimum DAC code is 0 10V and the maximum code is 4095 98 9951V The DAS 1800AO uses 2 s complement coding The two...

Page 127: ...are This board supports Polled Interrupt and DMA modes of data transfer Minimum conversion delay is primarily a function of the D A mode selected and operating parameters of other active tasks if any The DAC hardware is capable of converting data at 500kHz It will run at that rate under Windows with DriverLINX if the D A task runs alone or in the recycle mode with an active analog input task On a ...

Page 128: ...nnels For logical channel 0 the digital input port is a composite of the signals DI 0 DI 1 DI 2 DI 3 and the output port is a composite of the signals DO 0 DO 1 DO 2 DO 3 You can use the external multiplexer outputs MUX4 7 as pseudo digital outputs for applications requiring more than four digital outputs Since the channel gain QRAM controls the state of these outputs changes to the Table C 8 Logi...

Page 129: ... boards as immediate single value transfers on execution of the Service Request All digital I O is right justified DriverLINX ignores unused bits on output and returns zero on input Logical Channel 0 Digital Inputs return 4 bit values Digital Input Initialization Logical Channel 0 is unchanged by initialization Digital Output Initialization Initialization of the Digital Output subsystem resets the...

Page 130: ... pacing clock 8254 counters 1 and 2 You can use Logical counter 0 to pace Analog Output or Digital I O tasks indirectly through hardware interrupts The DAS 1800AO has an additional counter timer for supporting timed Analog Output tasks in hardware DriverLINX implements two logical counters in this case Logical counter 0 which corresponds to the internal A D pacing clock and logical counter 1 which...

Page 131: ...ions in DriverLINX C 7 analog ground 15 V return 4 11 ground LL GND 2 6 4 11 ground U_CM MD 2 6 4 11 input 2 5 output 2 23 analog input multiplexer input programming in DriverLINX C 11 analog input subsystem programming in DriverLINX C 8 analog output initialization output programming in DriverLINX C 17 analog output subsystem programming in DriverLINX C 16 analog to digital converter 2 5 AO recyc...

Page 132: ...g output signals 4 16 differential inputs 4 14 digital control signals 4 17 digital I O signals 4 17 EXP 1800 4 10 MB01 backplane 4 7 MB02 backplane 4 7 multiple boards 4 18 signals 4 11 single ended inputs 4 13 SSH 8 4 6 STA 1800U 4 2 STP 50 4 5 counter timer initialization programming in DriverLINX C 23 counter timer interrupt programming in DriverLINX C 23 counter timer subsystem programming in...

Page 133: ...erLINX installation 3 3 installing in DriverLINX 3 4 DOSTB 2 24 DriverLINX analog I O panel description 1 3 using 5 1 API DLLs description 1 3 browser map 3 4 calibration utility 6 4 CD ROM installation 3 3 computer resource requirements 1 1 configuration 3 4 description 1 3 event viewer 7 1 installation 3 2 selecting components to install 3 3 special device settings for DAS 1800 C 4 test panel pr...

Page 134: ...3 gains and ranges 2 8 installing DAS 1800ST HR Series board 3 6 interfaces for DriverLINX installation 3 3 internal clocking output programming in DriverLINX C 17 internal pacer clock 2 16 interrupt mode 2 22 I O addresses commonly used 3 7 J J1 and J2 connectors STA 1800U 4 4 B 2 J3 connector STA 1800U B 3 J4 to J7 connectors STA 1800U B 4 J8 to J11 jumper pads STA 1800U B 4 jumper pads J8 to J1...

Page 135: ... screw terminals 4 5 post trigger acquisition 2 20 potentiometers 6 2 6 3 power specifications A 9 powering boards 2 28 pre trigger acquisition 2 20 problem isolation 7 1 Q QRAM 2 7 queue channel gain 2 7 R RAM storage 2 7 repeat mode sampling input programming in DriverLINX C 9 resistors bias return 4 15 resolution sampling 2 5 RMT 02 rack mount enclosure 1 4 S screw terminals STP 50 4 5 signals ...

Page 136: ...hronous analog input output clocking output programming in DriverLINX C 17 T test panel procedure 5 2 Test Point function libraries for programming in 1 3 test points 6 2 6 3 TGIN 2 18 2 20 TGOUT 2 24 throughput 2 9 time base internal pacer clock 2 16 timing data conversion modes 2 15 triggers 2 18 troubleshooting 7 1 Turbo Paxcal function libraries for programming in 1 3 U user defined common mod...

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Page 139: ...quipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentation Artisan Scientific Corporation dba Artisan Technology Group is not an affiliate representative or authorized distributor for any manufacturer listed herein We re here to make your life easier How...

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