JYTEK USB-62405 Скачать руководство пользователя

Страница: 51 / 58

Calibration

4 Calibration

This chapter introduces the process of calibrating the USB-62405 to opti

mize AD measurement.

4.1 Loading Calibration Constants

The USB-62405 is factory-calibrated before shipment, with associated

calibration constants of the TrimDACs firmware written to the onboard

EEPROM. TrimDACs firmware is the algorithm in the FPGA. Loading cali

bration constants entails loading the values of TrimDACs firmware

stored in the onboard EEPROM.
JYTEK provides a software utility that automatically reads the calibration

constants, if necessary.
Dedicated space for storing calibration constants is provided in the

EEPROM. In addition to the default bank of factory calibration constants,

there is one user-utilization bank, allowing loading of the TrimDACs firm

ware values either from the original factory calibration or a subse

quently-performed calibration.
Since measurement errors may vary depending on time and tempera

ture, it is recommended that the USB-62405 module be calibrated in the

existing testing environment, as follows.

4.2 Auto-Calibration

The USB-62405 auto-calibration utility measures and corrects almost all

calibration errors with no requirement for external signal connection,

reference voltage, or measurement devices. An onboard calibration ref

erence is provided to ensure accuracy of auto-calibration. The reference

voltage is measured in the production line by a digital potentiometer

and compensated in the software. The calibration constant is stored

after auto-calibration.

NOTE:

The USB-62405 module should be warmed up for at least 15 minutes

before initiating auto-calibration.

Содержание USB-62405

Страница 1: ...Advance Technologies Automate the World Manual Rev 1 00 Revision Date July 5 2017 USB 62405 USB 2 0 based Dynamic Signal Acquisition Module User s Manual...

Страница 2: ...ii...

Страница 3: ...umentation 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 complia...

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: ...ons 2 1 4 2 Analog Input AI 2 1 4 3 DC accuracy 25 C 3 1 4 4 AC Dynamic Performance typical 25 C 3 1 4 5 Digital I O 5 1 5 Software Support 5 1 6 Driver Support for Windows 6 1 7 Utilities for Windows...

Страница 6: ...g Filter and Frequency Response 31 3 3 Triggering 33 3 3 1 Analog Input Trigger Source 33 3 4 Programmable Function I O 39 3 4 1 Static Digital Input Output 39 3 4 2 Frequency Counter 39 3 4 3 Pulse O...

Страница 7: ...Pre Rail Mounting 21 Figure 2 5 Module Rail Mounted 22 Figure 2 6 Wall Mount Holes 23 Figure 2 7 USB 62405 Module with Wall Mount Apparatus 24 Figure 3 1 USB 62405 Functional Block Diagram 27 Figure 3...

Страница 8: ...viii List of Figures This page intentionally left blank...

Страница 9: ...List of Tables ix List of Tables Table 1 1 U Test Interface Legend 7 Table 3 1 Signal Source Card Configuration 28 Table 3 2 USB 62405 Input Ranges 30...

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

Страница 11: ...d noise and provides usable signal bandwidth of the Nyquist rate making it ideal for high dynamic range signal measure ment in vibration and acoustic applications The USB 62405 supports digital and an...

Страница 12: ...ring terminals Power requirement USB power 5 V 400 mA Operating environment Ambient temperature 0 to 55 C Relative humidity 10 to 90 non condensing Storage environment Ambient temperature 20 to 70 C R...

Страница 13: ...gital software selectable Trigger mode Post trigger delay trigger middle trigger gated trigger pre trigger post or delay trigger with re triggering Data transfer Programmed I O continuous bulk transfe...

Страница 14: ...cut off frequency 0 1dB 2 4 Hz Input Signal Frequency fin Flatness 20Hz to 20kHz 0 01 dB 20Hz to 46 4kHz 0 15 dB Input Signal Frequency fin Crosstalk 1kHz 102 dB 46 4kHz 95 dB Measurement Bandwidth A...

Страница 15: ...for Windows UD DASK UD DASK is composed of advanced 32 64 bit kernel drivers for custom ized DAQ application development USB DASK enables you to perform Channels 2 programmable function I O Compatibi...

Страница 16: ...olymorphic VI for Lab VIEW and DAQ Toolbox for MATLAB You can download and install DAQPilot at http www jytek com Please note that only DAQPilot versions 2 6 1 0628 and later can sup port the USB 6240...

Страница 17: ...ure 1 1 U Test Interface Table 1 1 U Test Interface Legend You can download and install U Test at http www jytek com A Main Menu B Device Viewer C AI Data View AO DIO Control Panel D Analog Input Conf...

Страница 18: ...8 Introduction 1 8 Overview and Dimensions 1 8 1 Module NOTE NOTE All dimensions shown are in millimeters mm...

Страница 19: ...Introduction 9 Figure 1 2 USB 62405 Module Front View Figure 1 3 USB 62405 Module Side View...

Страница 20: ...Rear View 1 8 2 Module Stand The multi function USB 62405 stand is compatible with desk rail or wall mounting To fix the module in the stand slide the module body into the stand until a click is hear...

Страница 21: ...Introduction 11 the bottom of the stand in a back and forth motion and separate from the module Figure 1 5 Module Stand and USB Cable...

Страница 22: ...12 Introduction Figure 1 6 Module Stand Wall Mount Kit Side View w Connections...

Страница 23: ...Introduction 13 Figure 1 7 Module In Stand Front View...

Страница 24: ...14 Introduction Figure 1 8 Module Stand Top View 20 4 20 4 B 26...

Страница 25: ...Introduction 15 Figure 1 9 Module Stand Side Cutaway View Figure 1 10 Module Stand Front View 5 89 1 5 6 3 4 100...

Страница 26: ...ns The USB 62405 module is equipped with four BNC connectors and one 4 pin removable spring terminal connector with pin assignment as labeled BNC connector polarity is as shown Figure 1 11 BNC Connect...

Страница 27: ...cluded in the package USB 62405 Stand USB cable 2 meter Rail mount kit 2 2 Connecting the USB 62405 Module 1 Turn on the computer 2 Connect the USB 62405 module to one USB 2 0 port on the computer usi...

Страница 28: ...s 4 The USB 62405 module can now be located in the hardware Device Manager as shown Figure 2 1 USB 62405 Module in Windows Device Manager If the USB 62405 module cannot be detected the power provided...

Страница 29: ...ng and can be set from 0 to 7 The device ID allows dedicated con trol of the USB 62405 module irrespective of the connected USB port When more than one USB module of the same type is connected each mu...

Страница 30: ...20 Getting Started 2 4 Device Mounting 2 4 1 Rail Mounting The multi function stand can be mounted on the DIN rail using the rail mount kit as shown Figure 2 3 Rail Mount Kit...

Страница 31: ...Getting Started 21 Figure 2 4 Module Pre Rail Mounting...

Страница 32: ...22 Getting Started Figure 2 5 Module Rail Mounted...

Страница 33: ...Started 23 2 4 2 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 6 Wall Mou...

Страница 34: ...24 Getting Started Figure 2 7 USB 62405 Module with Wall Mount Apparatus...

Страница 35: ...Hardware Configuration All remaining hardware configurations are software programmable including sampling update rate input output channel input range and others Please see the UD DASK Function Refere...

Страница 36: ...26 Getting Started This page intentionally left blank...

Страница 37: ...pose digital I Os GPIO Figure 3 1 USB 62405 Functional Block Diagram ADLINK FPGA Calibration data 8051 Core function AFI 2 CH GPIO Control Signal DI DO Counter PWM OUT Trigger IN GPIO Circuit 24 Bit S...

Страница 38: ...ode input of the BNC through a 20 k resistor Recommended configurations for the signal sources are as follows Table 3 1 Signal Source Card Configuration Input Coupling When DC coupling is selected DC...

Страница 39: ...f set generated because of the excitation current and sensor impedance When enabling IEPE current sources the USB 62405 automatically sets input configuration to AC coupling Figure 3 3 Excitation Curr...

Страница 40: ...ansfer Non Buffering Programmed I O Polling mode supports flexible timing and is suitable for retrieving recent data without FIFO buffering latency The USB 62405 continuously updates the most recently...

Страница 41: ...on Library Ref erence provides corresponding software API details 3 2 5 Anti Aliasing Filter and Frequency Response The filter limits the bandwidth of the signal path and rejects out of band noise The...

Страница 42: ...32 Operation Figure 3 4 Input Frequency Response for High Resolution Mode Fs 51 2kS s 5 10 15 20 25 35 30 25 20 15 10 5 0 5 X 25 Y 2 058 Input Signal Frequency kHz dB 3dB Bandwidth Fs 51 2KS s...

Страница 43: ...analog or external digital signal in continuous analog input mode Trigger source and mode are programmable by soft ware 3 3 1 Analog Input Trigger Source Software Triggering This trigger mode require...

Страница 44: ...selected input channel and the resolution is 24 bit In external analog trigger mode the first acquired data starts with a delay time of 1 sam pling rate Below Low Analog Triggering As shown the trigg...

Страница 45: ...arity can be programmed using JYTEK software drivers Figure 3 8 Digital Triggering Trigger Modes Analog input supports post delay middle gate post trigger with retrig ger and delay trigger with retrig...

Страница 46: ...ger event occurs after the specified amount of data has been acquired the sys tem stores only data preceding the trigger event by a specified amount as shown Note that N must be equal to or less than...

Страница 47: ...hat the maximum delay count is 232 1 when the minimum delay count is 1 Figure 3 12 Delay Trigger Mode Operation Middle Trigger Acquisition Middle trigger acquisition is indicated when data is to be co...

Страница 48: ...d amount of data is acquired Figure 3 14 Gated Trigger Post Trigger or Delay Trigger Acquisition with Re Trigger Post trigger or delay trigger acquisition with re trigger function is indi cated in app...

Страница 49: ...ontrolled by software timing 3 4 2 Frequency Counter Calculates base clocks occurring within a period rising edge to rising edge or falling edge to falling edge of the repetitive input signal which is...

Страница 50: ...iple devices the GPIO can be programmed as external sample clock input with the same trigger signal and external sample clock applicable to multiple USB 62405s to achieve more than 4 channel synchroni...

Страница 51: ...e user utilization bank allowing loading of the TrimDACs firm ware values either from the original factory calibration or a subse quently performed calibration Since measurement errors may vary depend...

Страница 52: ...ed through auto calibration the software stores the new constants in a user configurable section of the EEPROM To restore original factory calibration settings the software can copy the factory calibr...

Страница 53: ...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 54: ...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 55: ...iginal manufacturers warranty For products containing storage devices hard drives flash cards etc please back up your data before sending them for repair JYTEK is not responsible for any loss of data...

Страница 56: ...age environments i e high temperatures high humidity or volatile chemicals Damage caused by leakage of battery fluid during or after change of batteries by customer user Damage from improper repair by...

Страница 57: ...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 58: ...48 Getting Service...

Результаты поиска

Содержание USB-62405

Отзывы:

Похожие инструкции для USB-62405

Бренды по названию

Популярные бренды

JYTEK USB-62405, Руководство пользователя

Результаты поиска

Содержание USB-62405

Отзывы:

Похожие инструкции для USB-62405

Бренды по названию

Популярные бренды