Ni9185 and ni9234 hardware settings in Ni Max

NI CDAQ-9185 It is a four slot chassis , adopt TCP agreement （ Ethernet cable ） Connect to the computer .NI 9234 It's a sound and vibration acquisition card ,4 passageway . Used to measure piezoelectricity from integrated electronics （IEPE） He Fei IEPE Sensor signal , For example, vibration sensor （ Accelerometer ）, Tachometer and proximity probe .

They are used in the project to collect equipment vibration signals , Connect as follows

Plug in one end of the network cable NI9185 The case , Plug one end into the computer network port , If the computer has no Internet port , Can buy USB turn TCP Joint , perhaps USB Type C turn TCP Joint .

open NI MAX.NI MAX It is automatically installed when installing the device driver

stay 【 Equipment and interfaces 】-> 【 Network devices 】 It's about , View the hardware device , among 【NI9234】 The front one 【3】 Refer to NI9185 On the chassis 3 Slot number , Because I put 9234 The acquisition card is inserted 3 In slot No

Before connecting the equipment , Pay attention to the settings NI equipment 、 Computer IP Address , Make sure they are in the same network segment , for example , You can see NI9185 Of IP The address is 【192.168.1.8】

Then put the corresponding network adapter on the computer IP Set in the same network segment , namely 【192.168.1.6】
【192.168.1.x】 Belong to IP Address of the C Class address , The first three bytes are network numbers , The last byte is the host （ equipment ） Number , So set the first three fields to the same , Last host number Be sure to set it differently , At the same time, pay attention to avoid some special ip, such as 【192.168.1.1】

If it shows 【 This device is reserved by other hosts 】, It may be because the device was previously connected to other computers , The solution is , Right click the device , And then click 【 Keep network settings 】 that will do .

use C# Developed NI The upper computer interface of the acquisition device , When debugging the sampling frequency , Report the following error

It can be seen that , The maximum sampling frequency of the device 50kHz, Minimum 390Hz. But it is found in actual use , When the sampling frequency is lower than 1800Hz when , There will be the following problems ： The actual sampling frequency is much lower than the set frequency , such as , When the sampling frequency is set to 100Hz when , Device acquisition 100 The time of a point is far less than 1 second . This will cause serious errors , therefore , Suggest The setting range of sampling rate is 1800Hz~50000Hz