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Analog Input Features

2-9

The maximum throughput for a DAS-1802HC, operating in unipolar
mode and having less than 1 LSB of error when driven from an ideal
voltage source, is as shown in Table 2-8.

Data Conversion Modes

DAS-1800HC Series boards support two modes of data conversion: paced
and burst. The conversion rate for each of these two modes is controlled
by its own clock: the pacer clock for paced mode and the burst mode
conversion clock for burst mode. Other differences between the two data
conversion modes are as follows:

●

Paced mode

— Paced mode is the default data conversion mode and

is the mode best-suited for continuous scanning of a queue of
channels at a constant rate. In the paced mode, the conversion rate
equals the pacer clock rate. The sample rate, which is the rate at
which a single channel is sampled, is the pacer clock rate divided by
the number of channels in the queue. The internal pacer clock is
programmable from 0.0012Hz to 333kHz.

●

Burst mode

— In the burst mode, each pulse from the pacer clock

starts a scan of an entire queue of channels. The conversion rate
during a burst mode scan is equal to the rate of the burst mode
conversion clock. The sample rate, which is the rate at which a single
channel is sampled, is equal to the pacer clock rate.

Table 2-8. Maximum Throughput for DAS-1802HC in Unipolar Mode

Range

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

200 ksamples/s

From 0 to 5.0V

312.5 ksamples/s

312.5 ksamples/s

250 ksamples/s

200 ksamples/s

From 0 to 2.5V

250 ksamples/s

250 ksamples/s

312.5 ksamples/s

200 ksamples/s

From 0 to 1.25V

200 ksamples/s

200 ksamples/s

200 ksamples/s

312.5 ksamples/s

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Содержание DAS-1800HC Series

Страница 1: ...s 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...

Страница 2: ...DAS 1800HC Series User s Guide A 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 Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 3: ...therefore Keithley does not warrant that operation of the Keithley Software will be uninterrupted or error free and or that the Keithley Software will be adequate for the customer s intended applicati...

Страница 4: ...CHINA Yuan Chen Xin Building Room 705 12Yumin Road Dewai Madian Beijing 100029 8610 6202 2886 Fax 8610 6202 2892 FINLAND Tiet j ntie 2 02130 Espoo Phone 09 54 75 08 10 Fax 09 25 10 51 00 FRANCE 3 all...

Страница 5: ...DAS 1800HC Series User s Guide Revision F August 2000 Part Number 77150 Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...

Страница 6: ...demark of Scientific Software Tools Inc Microsoft and Windows are registered trademarks and Visual C and Visual Basic are trademarks of Microsoft Corporation Borland is a registered trademark and Borl...

Страница 7: ...ry II as described in the International Electrotechnical Commission IEC Standard IEC 60664 Most mea surement control and data I O signals are Installation Category I and must not be directly connected...

Страница 8: ...in the manual The symbol on an instrument shows 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 av...

Страница 9: ...0 Pacer Clock 2 11 Burst Mode Conversion Clock 2 12 Triggers 2 12 Pre Trigger Acquisition 2 14 About Trigger Acquisition 2 14 Post Trigger Acquisition 2 15 Gates 2 15 Data Transfer Modes 2 16 Analog O...

Страница 10: ...ting Signals 4 10 Precautions 4 10 Precautions for Using DAS 1801HC Boards at High Gain 4 10 Additional Precautions 4 11 Connecting a Signal to a Single Ended Analog Input 4 12 Connecting a Signal to...

Страница 11: ...s Configuration C 1 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 Nu...

Страница 12: ...r Timer Initialization C 23 Counter Timer Interrupt C 23 Index List of Figures Figure 2 1 Block Diagram of DAS 1800HC Series Board 2 2 Figure 2 2 Timing of Conversion Modes for a Queue of Channels 4 t...

Страница 13: ...Source to a DAS 1800HC Series Board Configured for Single Ended Inputs 4 12 Figure 4 11 Three Types of Connections for Wiring a Signal Source to a DAS 1800HC Series Board Configured for Differential...

Страница 14: ...le 3 1 I O Address Map 000H to 3FFH 3 7 Table 7 1 Troubleshooting Information 7 3 Table A 1 Analog Input Specifications A 1 Table A 2 Analog Output Specifications A 4 Table A 3 Digital I O Specificati...

Страница 15: ...h 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 1800HC Series User s...

Страница 16: ...cal support Appendix A lists the specifications for DAS 1800HC Series boards Appendix B lists the pin assignments for the main I O connectors of DAS 1800HC Series boards and for the four 37 pin access...

Страница 17: ...follows The boards make 16 bit data transfers on the AT bus The boards are software configurable for 64 single ended or 32 differential analog input channels Channels are individually software configu...

Страница 18: ...n on these features refer to the functional description in Section 2 Supporting Software The following software is available for operating DAS 1800HC Series boards DAS 1800HC Series standard software...

Страница 19: ...figuration analog and digital I O programming counter timer programming technical reference and information specific to the DAS 1800HC Series hardware DAS 1800HC Series utilities The following utiliti...

Страница 20: ...01 backplanes are plug in isolated signal conditioning modules and the backplanes that hold them C 16MB1 is a cable for connecting an STA 1800HC to an MB01 signal conditioning backplane CAB 1800 Serie...

Страница 21: ...alog output and the digital I O These descriptions are offered to familiarize you with the operating options and to enable you to make the best use of your board The block diagram in Figure 2 1 repres...

Страница 22: ...nter 0 16 Bit Counter 1 16 Bit Counter 2 Address Decode Select Prescaler Xtall Osc Buffer Latch Analog Inputs 32 Diff or 64 S E Chan 0 0 Chan 31 63 DAC 0 Out 82C54 Timer Counter TGOUT SSHO XPCLK DI0 T...

Страница 23: ...ignals whose noise component is a significant part of the signal or if the signal has a non ground common mode You want to use single ended inputs for high level signals whose noise component is not s...

Страница 24: ...d Ranges The available gains and their corresponding input ranges are listed in Table 2 1 for the DAS 1801HC and Table 2 2 for the DAS 1802HC Table 2 1 DAS 1801HC Gains and Ranges for Unipolar and Bip...

Страница 25: ...oughput and reducing noise In the common case where the low level inputs are relatively slow speed and the high level inputs are high speed you should maintain two channel lists one for low speed inpu...

Страница 26: ...ormance driving adjacent channels at the same gain The source needs to be able to drive both the capacitance of the cable and the RC resistor capacitor product of the multiplexer resistance and the ou...

Страница 27: ...ples s 0 to 5 00V 0 to 5 00V 312 5 ksamples s 0 to 2 50V 312 5 ksamples s 0 to 1 25V 312 5 ksamples s 0 to 1 00V 312 5 ksamples s 0 to 100mV 200 ksamples s 0 to 20mV 60 ksamples s Table 2 5 Maximum Th...

Страница 28: ...50 ksamples s From 0 to 1 0V 200 ksamples s 312 5 ksamples s 250 ksamples s 60 ksamples s From 0 to 100mV 200 ksamples s 250 ksamples s 250 ksamples s 60 ksamples s From 0 to 20mV 50 ksamples s 60 ksa...

Страница 29: ...is sampled is the pacer clock rate divided by the number of channels in the queue The internal pacer clock is programmable from 0 0012Hz to 333kHz Burst mode In the burst mode each pulse from the pac...

Страница 30: ...ock In paced mode the pacer clock works alone to time interrupt mode and DMA mode operations as shown in Figure 2 2 In burst mode and burst mode with SSH the pacer clock and the burst mode conversion...

Страница 31: ...s Hardware external clock source The external pacer clock source must be an externally applied TTL compatible signal attached to the DI0 XPCLK pin B39 of the main I O connector J1 The active edge for...

Страница 32: ...oughput Rates on page 2 5 With SSH hardware attached to the DAS 1800HC Series board the sample rate pacer clock rate can be no more than the burst mode conversion rate divided by the sum of one plus t...

Страница 33: ...igger occurs they begin with the next active edge of the external clock source and continue with subsequent active edges Figure 2 3 illustrates conversions enabled with software triggering gating and...

Страница 34: ...a of interest appears both before and after a specific digital trigger Acquisition starts on an internal analog or digital trigger and continues until a specified number of samples has been acquired a...

Страница 35: ...rnal clock as follows With internal clocking The 82C54 stops counting when the gate signal goes inactive When the gate signal goes active the 82C54 is reloaded with its initial count value and starts...

Страница 36: ...ground allowing the CPU to execute other instructions The interrupt level is software selectable Unpredictable interrupt latencies in the Windows environment tend to make maximum board speeds unachiev...

Страница 37: ...ication the software driver automatically uses the FIFO to buffer the samples while the DMA channel is being re programmed for another address In most situations this FIFO buffering capability allows...

Страница 38: ...N for general purpose digital input If using an external pacer clock you must use digital input line DI0 XPCLK to attach the external pacer clock signal in this case you cannot use DI0 XPCLK for gener...

Страница 39: ...nd thus cannot be used with about trigger acquisitions Note also there is a delay of about 200ns between the active edge of TGIN and the starting edge of TGOUT When using digital control signal TGIN a...

Страница 40: ...Hold mode about 50ns after an active edge of the pacer clock and remains there until 200ns after the ADC starts conversion of the last channel in the burst SSHO remains low until another active edge o...

Страница 41: ...on when not used for SSH Hardware Assigning an Interrupt You assign an interrupt level to a DAS 1800 Series board through the DriverLINX software configuration see DriverLINX Configuration Notes on pa...

Страница 42: ...e of the request by scanning each board until the interrupt request flag is located DriverLINX then signals the computer to respond accordingly Power DAS 1800HC Series boards use the 5V and the 12V pr...

Страница 43: ...ap you discharge static electricity as soon as you hold the wrapped board If not equipped with a grounded wrist strap discharge static electricity by holding the wrapped board in one hand while placin...

Страница 44: ...ry structures Installing the DAS 1800HC Series Standard Software Package Important Before you begin installing any hardware or software for the DAS 1800HC read the DriverLINX Installation and Configur...

Страница 45: ...on applications that require DriverLINX Install Interfaces This optional component installs the files and example programs you will need to develop custom applications for DriverLINX using C C Visual...

Страница 46: ...selecting Install Adobe Acrobat 6 Open the manuals appropriate to the DAS 1800 installation and read them before installing your DAS 1800 board or configuring DriverLINX Installation and Configuration...

Страница 47: ...itch 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 t...

Страница 48: ...itch diagram 5 Insert and secure the board in the selected slot 6 Replace the computer cover You can use the DriverLINX Analog I O Panel see Section 5 to check board operation Configuring the DAS 1800...

Страница 49: ...er 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...

Страница 50: ...rnDL exe from the DriverLINX program group to tell DriverLINX how you configured your DAS 1800HC Series board and to verify that everything is properly installed and configured 2E8H to 2EFH Serial por...

Страница 51: ...Configuration Dialog Box 7 From the Model list select the model name for the DAS 1800 Series board you are configuring 8 If the value displayed in the Address edit box is not correct type the correct...

Страница 52: ...DAS 1800HC is initialized or after a configuration change DriverLINX runs a diagnostic program to verify the operation and accuracy of the configuration settings You are now ready to make I O connect...

Страница 53: ...pin female connector for cabling to the main I O connector of a DAS 1800HC Series board 120 labeled screw terminals for connecting sensor outputs and test equipment to the main I O connector A CJC Col...

Страница 54: ...9 HI CH08 LO CH40 HI CH08 HI AGND CH07 LO CH39 HI CH07 HI CH11 HI CH10 LO CH42 HI CH10 HI CH09 LO CH41 HI CH09 HI CH06LO CH38 HI CH06 HI CH05 LO CH37 HI CH05 HI CH04 LO CH36 HI CH04 HI CH03 LO CH35 HI...

Страница 55: ...3 LO CH45 HI CH13 HI CH12 LO CH44 HI CH12 HI CH11 LO CH43 HI CH24 LO CH56 HI CH24 HI AGND CH23 LO CH55 HI CH23 HI CH27 HI CH26 LO CH58 HI CH26 HI CH25 LO CH57 HI CH25 HI CH22 LO CH54 HI CH22 HI CH21 L...

Страница 56: ...100 wire ribbon cable CAB 1801 a 36 inch 100 wire ribbon cable CAB 1800 S an 18 inch 100 wire shielded ribbon cable CAB 1801 S a 36 inch 100 wire shielded ribbon cable The red wire on the CAB 1800 Ser...

Страница 57: ...tput appears across the TB11 screw terminals TB11 is located as shown in Figure 4 5 Figure 4 5 Location of CJC Circuit Screw Terminals TB11 You can determine the CJC temperature by wiring TB11 to the...

Страница 58: ...r 37 pin male connectors for cabling to MB01 backplanes SSH accessories or custom hookups Pin assignments for the main I O connector of a CONN 1800HC are the same as those for the STA 1800HC as shown...

Страница 59: ...ach the SSH 8 accessories to the STA 1800HC or CONN 1800HC as shown in Figure 4 7 Refer to the SSH 8 User s Guide for more information Figure 4 7 Cabling and Connections for Attaching SSH 8 Accessorie...

Страница 60: ...HC you can obtain the correct channel numbering from the pin assignments for these connectors as shown in Appendix B MB XX MB XX MB XX 0 1 15 MB01 MB XX MB XX MB XX 0 1 15 MB01 MB XX MB XX MB XX 0 1 1...

Страница 61: ...S 1800HC Series boards together as shown in Figure 4 9 Pin assignments for screw terminals of the STP 100 are the same as those for the main I O connector on the STA 1800HC see Figure 4 2 on page 4 3...

Страница 62: ...er a digital ground DGND is for digital signals and other power supply returns Precautions If you expect to use DAS 1801HC boards at high gain read the precautionary information in the following subse...

Страница 63: ...resistors capacitors and so on but is often accomplished more easily with software Instead of reading the channel once read it 10 or more times in quick succession and average the readings If the nois...

Страница 64: ...ion prevents the input amplifiers from saturating and it ensures the accuracy of your data Connecting a Signal to a Differential Analog Input This section describes common connection schemes for diffe...

Страница 65: ...tor must be greater than 1000 Rs In the lower circuit bias current return is inherently provided by the source The circuit requires no bias resistors Figure 4 11 Three Types of Connections for Wiring...

Страница 66: ...r input could see the sum of the signal source and common mode voltages Figure 4 12 shows the proper way to connect a differential input while Figure 4 13 illustrates the effect of a ground loop Figur...

Страница 67: ...al labels for the digital input DO0 to DO7 are the screw terminal labels for the digital output Connecting Digital Control Signals DAS 1800HC Series boards use five digital control signals Make your c...

Страница 68: ...gned to be tightly coupled with trigger and gate operations After each board receives the trigger or gate conversions begin within a defined period of time If each board is programmed for a different...

Страница 69: ...re the slaves If you use a software enable for board 0 of scheme 2 the board 0 pacer clock starts and triggers conversions in the slave boards However board 0 conversions do not begin until after conv...

Страница 70: ...uare and Triangle waves using the SST Signal Generator Output DC Level voltages using the Level Control The Analog I O Panel is useful for Testing the DAS 1800HC DriverLINX installation and configurat...

Страница 71: ...hB Drag the channel selectors in the AO Channel 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 1800HC board...

Страница 72: ...6 or 2001 An adjustable 10V voltage calibrator such as a Keithley Instruments Model 236 A CAB 1800 Series cable and a STA 1800HC STP 100 or CONN 1800HC or a user designed interface Potentiometers and...

Страница 73: ...ard 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 ran...

Страница 74: ...ons and hardware drivers make entries 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...

Страница 75: ...g or conflicts with another board Verify the board s address settings Also don t confuse hexadecimal with decimal addresses in the DriverLINX Device Configure dialog box Invalid IRQ level or Invalid D...

Страница 76: ...rectly make sure no other computer device is using any of the I O locations beginning at the specified base address If necessary reconfigure the base address Refer to page 3 5 for instructions on sett...

Страница 77: ...pen connection exists Check wiring to screw terminal Another system resource is using the specified base address Reconfigure the base address of the DAS 1800HC Series board refer to page 3 5 for more...

Страница 78: ...or cable from the DAS 1800HC Series board 3 Remove the DAS 1800HC Series board from the computer and visually check for damage If a board is obviously damaged refer to Technical Support on page 7 6 f...

Страница 79: ...o test the other slot as well 3 If the accessory slots 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...

Страница 80: ...eed MHz KB of RAM Video system BIOS type ___________________ ___________________ ___________________ ___________________ ___________________ ___________________ Operating System DOS version Windows ve...

Страница 81: ...oms The RMA number on the outside of the package Repackage the equipment using the original anti static wrapping if possible and handle it with ground protection Ship the equipment to ATTN RMA _______...

Страница 82: ...ocations Range and gain Unipolar Bipolar 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...

Страница 83: ...time Aperture delay Aperture uncertainty Conversion time 0 3 s 13 0ns 150ps rms 3 0 s max includes acquisition time Input bias current 40nA max 25 C 60nA max over operating range Common mode rejection...

Страница 84: ...er clock rate Programmable between 0 0012Hz and 333kHz Minimum external pacer clock pulse width 10ns Maximum external pacer clock rate 333kHz Minimum hardware trigger pulse width 10ns 1 Monotonicity i...

Страница 85: ...h energy 300nV seconds Power up DACs power up to 0 0V at reset Settling time 6 s typical 30 s maximum to LSB 1 Monotonicity is guaranteed over the operating range Table A 3 Digital I O Specifications...

Страница 86: ...ds 5VDC input 430mA typical 870mA maximum 12VDC input 400mA typical 550mA maximum Maximum current available at the 15V outputs 30mA Maximum current available at the 5V output 1 0A Artisan Technology G...

Страница 87: ...Series boards the STA 1800HC STP 100 and CONN 1800HC each contain 100 pins arranged in two banks of 50 bank A and bank B All are female connectors The STA 1800HC STP 100 and CONN 1800HC connectors are...

Страница 88: ...59 HI CH08 LO CH40 HI CH08 HI AGND CH07 LO CH39 HI CH07 HI CH11 HI CH10 LO CH42 HI CH10 HI CH09 LO CH41 HI CH09 HI CH06LO CH38 HI CH06 HI CH05 LO CH37 HI CH05 HI CH04 LO CH36 HI CH04 HI CH03 LO CH35 H...

Страница 89: ...CH46 HI CH14 HI CH13 LO CH45 HI CH13 HI CH12 LO CH44 HI CH12 HI CH11 LO CH43 HI CH24 LO CH56 HI CH24 HI AGND CH23 LO CH55 HI CH23 HI CH27 HI CH26 LO CH58 HI CH26 HI CH25 LO CH57 HI CH25 HI CH22 LO CH...

Страница 90: ...34 HI DI0 XPCLK 25 DI2 24 DO0 23 DO2 22 NC 21 15 CH03 LO CH35 HI 14 CH04 LO CH36 HI 13 CH05 LO CH37 HI 12 CH06 LO CH38 HI 11 CH07 LO CH39 HI 10 NC 09 DAC0 08 NC 07 DGND 06 DI1 TGIN 05 DI3 04 DO1 03 DO...

Страница 91: ...22 LO CH54 HI 11 CH23 LO CH55 HI 10 NC 09 DAC0 08 NC 07 DGND 06 DI1 TGIN 05 DI3 04 DO5 03 DO7 02 TGOUT 01 5V CH24 HI 37 CH25 HI 36 CH26 HI 35 CH27 HI 34 CH28 HI 33 CH29 HI 32 CH30 HI 31 CH31 HI 30 AGN...

Страница 92: ...describes how to configure DAS 1800HC analog inputs Analog Output Subsystem describes how DriverLINX is used to configure analog outputs Digital Input and Output Subsystems describes how DriverLINX i...

Страница 93: ...onversion 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...

Страница 94: ...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 DAS 1802 boards the minimum voltage is 10V The maxi...

Страница 95: ...unter 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 thes...

Страница 96: ...of SSH 8s connected in the Configure DAS 1800 Options 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...

Страница 97: ...ards support DMA transfer of data for Analog Output tasks The following table summarizes the operations implemented for each of the supported modes of the DriverLINX subsystem using the Keithley DAS 1...

Страница 98: ...A Start Stop Status rate dig cmd dig cmd TC dig 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...

Страница 99: ...anel of the computer The other DAS 1800 models contain one A D converter and a 16 channel multiplexer You can configure the A D inputs as 16 single ended or 8 differential channels The input channels...

Страница 100: ...al the number of channels scanned in the burst POLLED INTERRUPT and DMA modes can support burst mode sampling but exceeding the maximum sustainable acquisition rate in each mode will cause loss of dat...

Страница 101: ...symbolic constant DI_EXTTRG Digital Start Events contain mask pattern and match fields The mask is logically AND with the digital input data on the Logical Channel and then compared against the patte...

Страница 102: ...t channels Channels 0 15 refer to the native analog input channels on the DAS 1800 while channels 16 271 address one of the 256 mux channels While a DAS 1800 with 16 external multiplexers has 272 logi...

Страница 103: ...1 16 4 68 To specify multiplexer input channels 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 E...

Страница 104: ...re no channel tags The 12 least significant bits of the word contain the 12 bit A D data right justified In bipolar mode the four most significant bits all contain the sign For a 12 bit A D at a gain...

Страница 105: ...el configuration For a 12 bit A D at a gain of 100 in the 100mV range bipolar mode the voltage resolution would be Table C 4 Input Voltage and A D Binary Value Input Voltage A D Binary Value 10 0V 204...

Страница 106: ...board detects an overrun during an acquisition task The DAS 1800 hardware will stop acquisition when an overrun has occurred Analog Output Subsystem The DAS 1800HC models contain two channels of mult...

Страница 107: ...48 The advantages of using the DAC FIFO buffer for free run recycle mode analog output are Traffic on the memory bus is significantly reduced at high output rates The system response latency will be n...

Страница 108: ...ne its response characteristics such as propagation delay time The output response of the circuit must be measured simultaneously with the application of the stimulus to immediately capture the respon...

Страница 109: ...supports positive or negative active edge clocking Note that the DAS 1800HC models use DI 0 XPCLK for both external clocking and digital input BE SURE that external clock source is TTL compatible 0V...

Страница 110: ...range is fixed at 10 volts The minimum DAC code is 32768 10V and the maximum code is 32767 9 9997V The DAS 1800AO uses 2 s complement coding The two 12 bit DACs have two independently controllable sof...

Страница 111: ...D A conversions in hardware 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 ot...

Страница 112: ...DL_DATALOST The task will become inactive once this error occurs and the hardware will stop data transfer Digital Input and Output Subsystems Logical Channels For logical channel 0 the digital input...

Страница 113: ...d is the number of samples acquired since the Start Event If you specify a Digital Start Event and a Digital Stop Event the Stop Event must be exactly the same as the Start Event DriverLINX implements...

Страница 114: ...ernal functions Therefore DriverLINX implements only one logical counter Logical counter 0 which corresponds to the internal A D pacing clock 8254 counters 1 and 2 You can use Logical counter 0 to pac...

Страница 115: ...lt C 3 AI DMA 1 AO DMA 1 setting in DriverLINX C 4 AI IRQ setting in DriverLINX C 4 allowed operations in DriverLINX C 7 analog input section 2 3 output 2 17 output signals connecting 4 15 analog inpu...

Страница 116: ...nnecting analog output signals 4 15 CJC circuit 4 5 CONN 1800HC 4 6 differential input 4 12 digital control signal DOSTB 4 16 SSHO 4 15 TGIN 4 15 TGOUT 4 15 XPCLK 4 16 digital control signals 4 15 dig...

Страница 117: ...rogramming in DriverLINX C 22 disable AO recycle mode set in DriverLINX C 5 DMA dual channel 2 17 levels A 3 mode 2 17 single channel 2 17 documentation for DriverLINX installation 3 3 installing in D...

Страница 118: ...ility 2 17 Half Full 2 16 Not Empty 2 16 G gains and ranges 2 4 gate with external clocking 2 15 with internal clocking 2 15 gates 2 15 glitch energy A 4 ground loops avoiding 4 14 grounding modes set...

Страница 119: ...e help for DriverLINX 1 3 options configuration 3 9 oscilloscope in analog I O panel 5 1 output digital 2 18 output capacitance 2 6 P pacer clock 2 9 2 11 pin assignments CONN 1800HC connectors J1 to...

Страница 120: ...single channel DMA 2 17 single ended inputs 4 12 specifications analog input A 1 analog output A 4 digital I O A 4 power supply A 5 SSH 8 accessory 1 4 4 7 SSHO connecting 4 15 using 2 20 SST signal...

Страница 121: ...igital control signal DOSTB 2 18 SSHO 2 20 TGIN 2 18 2 19 TGOUT 2 19 XPCLK 2 11 2 18 digital control signal SSHO 2 20 digital inputs and outputs 2 18 utility calibration 6 1 V Visual Basic function li...

Страница 122: ...4 93 07 34 GREAT BRITAIN Unit 2 Commerce Park Brunel Road Theale Berkshire RG7 4AB 0118 929 7500 Fax 0118 929 7519 INDIA Flat 2B Willocrissa 14 Rest House Crescent Bangalore 560 001 91 80 509 1320 21...

Страница 123: ...uipment 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 documentat...

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