NI VISA, pyVISA, python

在windows PC上安装:

 

1. 最新 NI-VISA程序包http://www.ni.com/visa/。RF设备使用VISA协议。

2. python 2x (3x以上不好用)

3. PyVisa package.  http://pyvisa.sourceforge.net/

 

测试。

例子， （和帖子TERA TERM中， 子script相同功能）： 

#!C:\Python27\python.exe

import sys, os, visa, threading, time

 

PM = visa.instrument("TCPIP0::192.168.1.70::inst0::INSTR")

 

def check_read():

    #currentdir = os.curdir

    #fullname = os.path.join(currentdir, "read_pm.txt")

    #fullname = os.path.join(".", "read_pm.txt")

    if os.path.isfile("read_pm.txt"):

        read_pm()

        os.remove("read_pm.txt") 

 

    return

 

def read_pm():

    PM.write("FETCh:CW:POWer?")

    # Write file

    fpm_read = open("pm_read_ok.txt","w")

    fpm_read.write(PM.read())

    fpm_read.close()

    return

 

def main():

    # Display ID

    print PM.ask("*IDN?")

    # Init PM

    PM.write("*CLS")

 

    # Main loop

    while 1:

        time.sleep(1)

        check_read()

 

if __name__ == '__main__':

    main()