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1�3 Specifications

1�3�1 Analog Input

Channel Characteristics

Comment

Channels

2 single-ended

Connector type

SMA

Input coupling

AC or DC, software selectable

AC coupling cutoff frequency

11Hz

ADC resolution

14-Bit

Inout signal range

±0.2 V, ±2 V, or ±10 V

Bandwidth(-3dB)

90MHz

Overvoltage

±10V

1MΩ

±10V sine wave / 7Vrms with

|Peaks| < 10V

50Ω

Input impedance

50 Ω or 1MΩ, software

selectable

Offset error

±1 mV

Gain error

±0.65%

SNR

56dB

1MΩ, ±0.2 V

62dB

1MΩ, ±2V

62dB

1MΩ, ±10V

60dB

50Ω, ±0.2V

62dB

50Ω, ±2V

THD

-73dB

1MΩ, ±0.2V

-69dB

1MΩ, ±2V

-65dB

1MΩ, ±10V

-73dB

50Ω, ±0.2V

-69dB

50Ω, ±2V

SFDR

72dB

1MΩ, ±0.2V

72dB

1MΩ, ±2V

72dB

1MΩ, ±10V

68dB

50Ω, ±0.2V

68dB

50Ω, ±2V

Crosstalk

-80dB

±0.2 V, ±2 V

While ±10V, 50Ω acquisition is available, overvoltage protection only applies to 7Vrms.

Any ±10V sine wave with an offset or DC voltage over ±7V input can cause damage.

Содержание PCIe-69852

Страница 1: ...01 PXIe 69852 2 CH 14 Bit 200 MS s Digitizer User s Manual Manual Rev 1 00 Revision Date Jul 16 2016...

Страница 2: ...minor physical injury component damage data loss and or program corruption when trying to complete a task Information to prevent serious physical injury component damage data loss and or program corr...

Страница 3: ...on 11 3 2 2 Input Range and Data Format 11 3 2 3 DMA Data Transfer 12 3 3 Trigger Source and Trigger Modes 13 3 3 1 Software Trigger 14 3 3 2 External Digital Trigger 14 3 3 3 PXI STAR Trigger 14 3 3...

Страница 4: ...DC Timing Control 19 3 6 1 Timebase Architecture 19 3 6 2 Basic Acquisition Timing 19 3 7 Synchronizing Multiple Modules 22 Appendix A Calibration 23 A 1 Calibration Constant 23 A 2 Auto Calibration 2...

Страница 5: ...1 3 Digital Trigger Input 4 Table 1 4 Digital Trigger Output 5 Table 1 5 PXIe 69852 I O Array Legend 8 Table 3 1 Input Range and Data Format 12 Table 3 2 Input Range FSR and FSR Values 12 Table 3 3 In...

Страница 6: ...Trigger Architecture of the PXIe 69852 13 Figure 3 4 External Digital Trigger 14 Figure 3 5 Post Trigger Acquisition 15 Figure 3 6 Delayed Trigger Mode Acquisition 16 Figure 3 7 Pre Trigger Mode Acqui...

Страница 7: ...auto calibrated with an onboard reference circuit calibrating offset and acquiring analog input errors Following auto calibration the calibration constant is stored in EEPROM such that these values c...

Страница 8: ...sine wave 7Vrms with Peaks 10V 50 Input impedance 50 or 1M software selectable Offset error 1 mV Gain error 0 65 SNR 56dB 1M 0 2 V 62dB 1M 2V 62dB 1M 10V 60dB 50 0 2V 62dB 50 2V THD 73dB 1M 0 2V 69dB...

Страница 9: ...7 6 5 4 3 2 1 0 Bandwidth Frequency Hz Magnitude dB Figure 1 1 Analog Input Channel Bandwidth 0 2 Vpp 0 1M 0 3M 1M 3M 10M 30M 100M 300M 9 8 7 6 5 4 3 2 1 0 Bandwidth Frequency Hz Magnitude dB Figure 1...

Страница 10: ...ebase 1 3 3 Triggers Trigger Source Mode Trigger source Software external digital trigger analog trigger PXI_STAR PXI_trigger bus 0 7 and PXIe_DSTARB Trigger mode Post trigger delay trigger pre trigge...

Страница 11: ...idity 5 95 non condensing Storage Temperature 20 C 80 C Relative humidity 5 95 non condensing Calibration Onboard reference 5 V and 2 5 V Temperature coefficient 3 0 ppm C Warm up time 15 minutes Powe...

Страница 12: ...and DLL for Windows XP 7 8 DLL is binary compatible across Windows XP 7 8 This means all applications developed with WD DASK are compatible with these Windows operating systems The development enviro...

Страница 13: ...7 The PXIe 69852 I O array is labeled to indicate connectivity as shown Figure 1 4 PXIe 69852 I O Array...

Страница 14: ...ck to digitizer Ext Digital Trigger Input TRG IN External digital trigger input receiving trigger signal from external instrument and initiating acquisition Trigger Output TRG OUT Trigger output in wh...

Страница 15: ...be easily damaged by static electricity The module must be handled on a grounded anti static mat The operator must wear an anti static wristband grounded at the same point as the anti static mat Inspe...

Страница 16: ...ith the module guide in the PXIe chassis 3 Slide the module into the chassis until resistance is felt from the PXIe connector 4 Push the ejector latch upwards and fully insert the module into the chas...

Страница 17: ...tes with equivalent 50 or 1 M input impedance selected by software The 14 bit ADC provides not only accurate DC performance but also high signal to noise ratio and high spurious free dynamic range in...

Страница 18: ...A transfer the hardware temporarily stores acquired data in the onboard AD Data FIFO and then transfers the data to a user defined DMA buffer in the computer Using a high level programming library for...

Страница 19: ...dress Transfer Size Next Descriptor Figure 3 2 Linked List of PCI Address DMA Descriptors 3 3 Trigger Source and Trigger Modes This section details PXIe 69852 triggering operations Figure 3 3 Trigger...

Страница 20: ...l Digital Trigger 3 3 3 PXI STAR Trigger When PXI STAR is selected as the trigger source the PXIe 69852 accepts a TTL compatible digital signal as a trigger signal Triggering occurs when a rising edge...

Страница 21: ...able from 50ns to 10 s via software 3 4 Trigger Modes Trigger modes applied to trigger sources initiate different data acquisition timings when a trigger event occurs The following trigger mode descri...

Страница 22: ...uisition start Trigger Data Trigger Event Occurs Acquisition stop Data transfer to system begins N samples X samples have been acquired before trigger occurs where X N Trigger signals occuring before...

Страница 23: ...Trigger and Delayed Trigger only In normal post trigger mode acquisition N samples channel data are generated for a single trigger event In Re trigger mode See Acquisition with Re Triggering on page...

Страница 24: ...source is restricted to 10MHz 3 5 3 External Sampling Clock The PXIe 69852 can further choose an external clock source as ADC sampling clock When an external sampling clock is selected the ADC samplin...

Страница 25: ...cquisition engine for essential timing The Timebase is from an onboard synthesizer To achieve different sampling rates a scan interval counter is used Using the post trigger mode as an example as show...

Страница 26: ...r example if the scan interval counter is set as 2 the equivalent sampling rate is 200MS s 2 100MS s If as 3 the equivalent sampling rate is 200MS s 3 66 66MS s and vice versa The scan interval counte...

Страница 27: ...mode operation 1 268435452 for Data Average mode for 1 channel 1 134217724 for Data Average mode for 2 channel trigDelayTicks 16 bit 1 65535 Indicates time between a trigger event and commencement of...

Страница 28: ...XI_BUS pin so that all devices on PXI_BUS are triggered simultaneously When any device on PXI_BUS is required to operate in pre trig or mid trig mode the master device must be set correspondingly The...

Страница 29: ...to hardware In the absence of user assignment the driver loads constants stored in bank 0 If con stants from Bank 1 are to be loaded the preferred bank can be designated as boot bank by software Foll...

Страница 30: ...power source settings Always install and operate equipment near an easily accessible electrical socket outlet Secure the power cord do not place any object on over the power cord Only install attach a...

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