JYTEK USB-61210 Скачать руководство пользователя страница 37 | Manualshive

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Operation & Calibration

27

External Digital Triggering

An external digital trigger occurs when a rising or falling edge is

detected on the digital signal connected to the AITG (analog input

trigger) pin. Trigger polarity can be programmed using JYTEK software

drivers.

Figure 3-7: Digital Triggering

3.1.4

Trigger Modes

Analog input supports post, pre, middle, delay, gate, post trigger with

retrigger, and delay trigger with retrigger modes.

Post-Trigger Acquisition Mode (no retriggering)

Post-trigger acquisition is indicated when data is to be collected after

the trigger event, as shown..

Figure 3-8: Post Trigger without Retriggering

WARNING:

Signal level of the external digital trigger signals should be

LVTTL-compatible, with a minimum pulse of 20ns.

Positive-edge (rising)

trigger event occurs

Negative-edge (falling)

trigger event occurs

Time

Ɣ

Operation

initiates

Trigger

N samples

Data

Ɣ

Trigger event occurs

Ɣ

Acquisition begins

Ɣ

Acquisition stops

Ɣ

Data transfer to system commences

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Содержание USB-61210

Страница 1: ...Advance Technologies Automate the World Manual Rev 1 00 Revision Date July 31 2017 USB 61210 4 CH 16 Bit 2MS s Simultaneous Sampling USB DAQ Module User s Manual...

Страница 2: ...ii...

Страница 3: ...mentation even if advised of the possibility of such damages Environmental Responsibility JYTEK is committed to fulfill its social responsibility to global environ mental preservation through complian...

Страница 4: ...NOTE NOTE Additional information aids and tips that help users perform tasks CAUTION Information to prevent minor physical injury component damage data loss and or program corruption when trying to co...

Страница 5: ...2 Analog Input 3 1 5 Schematics 4 1 5 1 Module 4 1 5 2 Module Stand 7 1 6 Connector Pin Assignment 11 1 6 1 Connector Signal Description 11 1 7 Analog Input Signal Connection 12 1 8 Software Support...

Страница 6: ...Conversion 22 3 1 3 Trigger Sources 25 3 1 4 Trigger Modes 27 3 1 5 Programmable Function I O 31 3 1 6 Basic Timer Counter Function 32 3 1 7 General Purpose Timer Counter Modes 33 3 1 8 Isolation 39 3...

Страница 7: ...18 Figure 2 6 USB 61210 module in Windows Device Manager 19 Figure 2 7 Device ID Selection Control 20 Figure 3 1 Carrier Board Functional Block Diagram 21 Figure 3 2 Daughter Board Functional Block Di...

Страница 8: ...red Continuous Pulse 37 Figure 3 21 Mode 8 Continuous Gated Pulse 37 Figure 3 22 Mode 9 Edge Separation Measurement 38 Figure 3 23 Mode 10 PWM Output Following Trigger 38 Figure 3 24 Mode 10 PWM Outpu...

Страница 9: ...ble 1 1 USB 61210 Pin Assignment 11 Table 1 2 CN1 CN2 I O Signal Description 12 Table 3 1 Bipolar Analog Input Range and Output Digital Code 23 Table 3 2 Pin Definition of LVTTL Digital I O 31 Table 3...

Страница 10: ...x List of Tables This page intentionally left blank...

Страница 11: ...th removable screw down terminals for easy device connectivity and the included multi functional stand can be used for desktop rail or wall mounting Suitable for high speed data acquisition laboratory...

Страница 12: ...on I O 8 CH LVTTL DI and 4 CH LVTTL DO 2 CH 32 bit general purpose timer counters Clock source internal or external Max source frequency internal 80 MHz exter nal 10 MHz 2 CH PWM outputs Duty cycle 1...

Страница 13: ...ain 5 SINAD fin 10 kHz 89 dB gain 1 5 THD fin 10 kHz 100 dB gain 1 5 SNR fin 10 kHz 89 dB gain 1 5 ENOB fin 10 kHz 14 3 Bit gain 1 5 Temperature Drift Gain Error 5 ppm C gain 1 5 Temperature Drift Off...

Страница 14: ...4 Introduction 1 5 Schematics 1 5 1 Module Figure 1 1 USB 61210 Module Rear View Data transfer Programmed I O continuous USB bulk transfer mode NOTE NOTE All units are in millimeters mm...

Страница 15: ...Introduction 5 Figure 1 2 USB 61210 Module Side View...

Страница 16: ...6 Introduction Figure 1 3 USB 61210 Module Front View...

Страница 17: ...desk rail or wall mounting To fix the module in the stand slide the module body into the stand until a click is heard To remove the module from the stand twist the bottom of the stand in a back and fo...

Страница 18: ...8 Introduction Figure 1 5 Module Stand Wall Mount Kit Side View w connections Figure 1 6 Module in Stand Front View...

Страница 19: ...Introduction 9 Figure 1 7 Module Stand Top View 20 4 20 4 B 26...

Страница 20: ...10 Introduction Figure 1 8 Module Stand Side Cutaway View Figure 1 9 Module Stand Front View 5 89 1 5 6 3 4 100...

Страница 21: ...IGND 20 40 IGND GPI0 19 39 GPO0 GPI1 18 38 GPO1 GPI2 17 37 GPO2 GPI3 16 36 GPO3 GPI4 15 35 IGND GPI5 14 34 CONV GPI6 13 33 IGND GPI7 12 32 AITG IGND 11 31 NC IGND 10 30 IGND AI0 9 29 AI2 AI0 8 28 AI2...

Страница 22: ...way to the existing ground system A device with an isolated output is a floating signal source This includes optical isolator outputs transformer outputs and thermocouples Ground Referenced A ground...

Страница 23: ...ended mode Figure 1 10 GRND Referenced Source w DIFF Input Connection of a floating signal source to the USB 61210 module in differential input mode is further shown For floating signal sources the n...

Страница 24: ...K for customized DAQ application development USB DASK enables you to perform detailed operations and achieve superior performance and reli ability from your data acquisition system DASK kernel drivers...

Страница 25: ...returning any product to JYTEK Ensure that the following items are included in the package USB 61210 module Stand Two removable screw terminals USB cable 2 meter length Rail mount kit 2 2 Attaching th...

Страница 26: ...16 Getting Started 2 3 Rail Mounting The multi function stand can be mounted on the DIN rail using the rail mount kit as shown Figure 2 1 Rail Mount Kit Figure 2 2 Module Pre Rail Mounting...

Страница 27: ...3 Module Rail Mounted 2 4 Wall Mounting The multi function stand can be fixed to a wall using four flush head screws as shown The four screw holes should be approximately 3 4 mm in diameter Figure 2 4...

Страница 28: ...ware message appears It will take around 6 seconds to load the firmware When loading is complete the LED indica tor on the rear of the USB DAQ module changes from amber to green and the New Hardware m...

Страница 29: ...e USB port may be insufficient The USB 61210 module is exclusively powered by the USB port and requires 460 mA 5 V 2 5 2 Device ID A rotary control on the rear of the module as shown controls device I...

Страница 30: ...D to avoid conflicts and errors in operation Figure 2 7 Device ID Selection Control 2 5 3 Hardware Configuration All remaining hardware configurations are software programmable including sampling upda...

Страница 31: ...ow temperature drift signal acquisition Calibration data is saved in the EEPROM Figure 3 1 Carrier Board Functional Block Diagram FPGA ADC Control Trigger Control Data Processing 8051 Core Function PC...

Страница 32: ...predefined trigger source Data acquisition will commence once a trigger condition is matched After A D conversion A D data is buffered in a data FIFO for transfer into system memory for further proces...

Страница 33: ...a single A D data sample the A D converter starts a conversion when the dedicated software Description Bipolar Analog Input Range Digital Code Full scale range 10 V 2 V N A Least significant bit 305...

Страница 34: ...ion clock pin While the conversion clock source can be chosen by setting AI source configuration if precision acquisition is required use of the internal hardware timer is recommended Sampling Rate Co...

Страница 35: ...3 Trigger Sources Software Triggering This trigger mode requires no external trigger source The trigger asserts immediately following execution of the specified function calls to begin the operation E...

Страница 36: ...3 5 Below Low Analog Triggering Above High Analog Triggering In above high analog triggering as shown the trigger signal is gener ated when the input analog signal exceeds the High_Threshold volt age...

Страница 37: ...etrigger and delay trigger with retrigger modes Post Trigger Acquisition Mode no retriggering Post trigger acquisition is indicated when data is to be collected after the trigger event as shown Figure...

Страница 38: ...ividually M and N samples as shown Figure 3 10 Middle Trigger Pre Trigger Mode Pre trigger acquisition is indicated when data is to be collected before the trigger event Acquisition commences once spe...

Страница 39: ...nal occurs another N samples are performed The process repeats until the specified number of re trigger signals are detected Figure 3 12 Post Trigger with Retriggering Gated Trigger Gated trigger acqu...

Страница 40: ...l programmable I O function provided by an FPGA chip configurable as LVTTL DI DO 32 bit timer counters and PWM output These signals are single ended and 5 V LVTTL compli ant LVTTL DI DO Programmable f...

Страница 41: ...ammable gate selection hardware or software control Programmable input and output signal polarities high active or low active Initial Count loaded from a software application Current count value reada...

Страница 42: ...vity all GPTC_CLK GPTC_GATE and GPTC_OUT in the fol lowing illustrations are assumed to be active high or rising edge triggered 3 1 7 General Purpose Timer Counter Modes Ten programmable timer counter...

Страница 43: ...ges of GPTC_GATE After the completion of the period interval on GPTC_GATE GPTC_OUT outputs high and then current count value can be read by the software applica tion Operation in which initial count 0...

Страница 44: ...4 Single Gated Pulse Generation This mode generates a single pulse with programmable delay and pro grammable pulse width following software start The two programma ble parameters can be specified in t...

Страница 45: ...Mode 5 Single Triggered Pulse Mode 6 Re Triggered Single Pulse Generation This mode is similar to Mode 5 except that the counter generates a pulse following every active edge of GPTC_GATE After softwa...

Страница 46: ...E enables disables calculation When GPTC_GATE is inactive the counter halts the current count value Generation of two pulses with a pulse delay of four and a pulse width of three is shown Figure 3 21...

Страница 47: ...tting a varying amount of Pulse_initial_cnt and Pulse_length_cnt varying pulse frequencies Fpwm and duty cycles Dutypwm can be obtained PWM output is shown Figure 3 23 Mode 10 PWM Output Following Tri...

Страница 48: ...t can also reduce the ground loop noise Figure 3 25 Isolation 3 2 Calibration 3 2 1 Loading Calibration Constants The USB 61210 is factory calibrated before shipment The associated calibration constan...

Страница 49: ...ility measures and corrects almost all cali bration errors with no external signal connections reference voltage or measurement devices The USB 61210 provides onboard calibration ref erence to ensure...

Страница 50: ...40 Operation Calibration...

Страница 51: ...rn off power and unplug any power cords cables To avoid electrical shock and or damage to equipment Keep equipment away from water or liquid sources Keep equipment away from high heat or high humidity...

Страница 52: ...serviced by authorized technicians when The power cord or plug is damaged Liquid has penetrated the equipment It has been exposed to high humidity moisture It is not functioning or does not function a...

Страница 53: ...hard drives flash cards etc please back up your data before send ing them for repair JYTEK is not responsible for any loss of data Please ensure the use of properly licensed software with our systems...

Страница 54: ...age environments i e high temperatures high humidity or volatile chemi cals Damage caused by leakage of battery fluid during or after change of batteries by customer user Damage from improper repair b...

Страница 55: ...tact us should you require any service or assistance SHANGHAI JYTEK CO LTD Web Site http www jytek com Sales Service service jytek com Telephone No 86 21 50475899 Fax No 86 21 50475899 Mailing Address...

Страница 56: ...46 Getting Service...

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