view example2.py @ 81:1947d10f9395

- Search for signal frequency iteratively to improve accuracy. - Use narrower bandwidths (via FFT filter) for close in measurements. - Work around bug in firmware when using FFT filter. - Actually _raise_ the exception when the signal power is too low.
author Daniel O'Connor <doconnor@gsoft.com.au>
date Fri, 27 Sep 2024 16:56:44 +0930
parents c90db15a497e
children
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#!/usr/bin/env python

# Copyright (c) 2009
#      Daniel O'Connor <darius@dons.net.au>.  All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#

import rsib
import numpy
from matplotlib import pylab
    
def test(r):
    r.write('*IDN?')
    print("ID is " + r.read(5))
    r.write("*RST")
    r.write("INIT:CONT OFF")
    r.write("SYST:DISP:UPD ON")
    r.write("FREQ:STAR 85MHz;STOP 125MHz")
    r.write("DISP:WIND:TRAC:T:RLEV -20dBm")
    r.write("INIT;*WAI")
    r.write("*OPC?")
    print("OPC - " + r.read(10))
    r.write("CALC:MARK:PEXC 6DB")
    r.write("CALC:MARK:FUNC:TOI ON")
    r.write("CALC:MARK:FUNC:TOI:RES?")
    print("Result " + r.read(10))

    r.write("FORM:DATA ASC")
    r.write("CALC:LIM5:NAME 'TEST1'")
    r.write("CALC:LIM5:COMM 'Upper limit line'")
    r.write("CALC1:LIM5:TRAC 2")
    r.write("TRAC1? TRACE1")
    data = r.read(10)
    #print "Data - " + dat
    data = list(map(float, data.split(',')))
    ary = numpy.array(data)
    pylab.plot(ary)
    pylab.show()
    
if __name__ == '__main__':
    r = rsib.RSIBDevice('analyzer')
    test(r)