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scope.py
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scope.py
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# -*- coding: utf-8; mode: python; indent-tabs-mode: t; tab-width:4 -*-
import sys, time, math, os.path
from QtVersion import *
import sys, time, utils
import pyqtgraph as pg
import numpy as np
import eyes17.eyemath17 as em
from functools import partial
class Expt(QWidget):
TIMER = 50
loopCounter = 0
AWGmin = 1
AWGmax = 5000
AWGval = 1000
SQ1min = 0
SQ1max = 5000
SQ1val = 0
PV1min = -5.0
PV1max = 5.0
PV1val = 0.0
PV2min = -3.3
PV2max = 3.3
PV2val = 0.0
Waves = ['sine', 'tria', 'SQR2']
Wgains = ['80 mV', '1V', '3V']
waveindex = 0
wgainindex = 2
RPVspacing = 3 # Right panel Widget spacing
RPWIDTH = 300
LABW = 60
# Scope parameters
MAXCHAN = 4
Ranges12 = ['16 V', '8 V','4 V', '2.5 V', '1 V', '.5V'] # Voltage ranges for A1 and A2
RangeVals12 = [16., 8., 4., 2.5, 1., 0.5]
Ranges34 = ['4 V', '2 V', '1 V', '.5V'] # Voltage ranges for A3 and MIC
RangeVals34 = [4,2,1,0.5]
chanStatus = [1,0,0,0]
timeData = [None]*4
voltData = [None]*4
voltDataFit = [None]*4
traceWidget = [None]*4
offSliders = [None]*4
offValues = [0] * 4
DiffTraceW = None
fitResWidget= [None]*4
chanSelCB = [None]*4
rangeSelPB = [None]*4
fitSelCB = [None]*4
fitResLab = [None]*4
fitFlags = [0]*4
Amplitude = [0]*4
Frequency = [0]*4
Phase = [0]*4
rangeVals = [4]*4 # selected value of range
rangeTexts = ['4 V']*4 # selected value of range
scaleLabs = [None]*4 # display fullscale value inside pg
voltMeters = [None]*3
voltMeterCB = [None]*3
valueLabel = None
sources = ['A1','A2','A3', 'MIC']
tbvals = [0.100, 0.200, 0.500, 1.0, 2.0, 5.0, 10.0, 20.0, 50.0] # allowed mS/div values
NP = 500 # Number of samples
TG = 1 # Number of channels
MINDEL = 1 # minimum time between samples, in usecs
MAXDEL = 1000
delay = MINDEL # Time interval between samples
TBval = 1 # timebase list index
Trigindex = 0
Triglevel = 0
dutyCycle = 50
MAXRES = 5
resLabs = [None]*MAXRES
Results = [None]*MAXRES
def recover(self): # Recover the settings before it got disconnected
try:
self.control_od1()
self.pv1_text('0')
self.pv2_text('0')
self.p.set_sqr1(self.SQ1val, self.dutyCycle)
self.select_wave(self.waveindex)
self.p.set_wave(self.AWGval)
self.select_wgain(self.wgainindex)
self.set_trigger(self.Triglevel*1000)
self.p.set_sine(self.AWGval)
self.p.configure_trigger(0, 'A1', 0)
self.select_range((0,2))
self.select_range((1,2))
self.select_range((2,0))
self.select_range((3,0))
except:
pass
def cross_hair(self):
if self.Cross.isChecked() == False:
self.pwin.vLine.setPos(-1)
self.pwin.hLine.setPos(-17)
def updateTV(self, evt):
if self.p == None: return
pos = evt[0] ## using signal proxy turns original arguments into a tuple
if self.pwin.sceneBoundingRect().contains(pos):
mousePoint = self.pwin.vb.mapSceneToView(pos)
xval = mousePoint.x()
if self.Cross.isChecked() == True:
self.pwin.vLine.setPos(mousePoint.x())
self.pwin.hLine.setPos(mousePoint.y())
for k in range(self.MAXRES):
self.pwin.removeItem(self.resLabs[k])
t = self.timeData[0]
index = 0
for k in range(len(t)-1): # find out Time at the cursor position
if t[k] < xval < t[k+1]:
index = k
self.resLabs[0] = pg.TextItem(
text= unicode(self.tr('Time: %6.2fmS ')) %t[index],
color= self.resultCols[0]
)
self.resLabs[0].setPos(0, -11)
self.pwin.addItem(self.resLabs[0])
for k in range(self.MAXCHAN):
if self.chanStatus[k] == 1:
self.Results[k+1] = unicode(self.tr('%s:%6.2fV ')) %(self.sources[k],self.voltData[k][index])
self.resLabs[k+1] = pg.TextItem(text= self.Results[k+1], color= self.resultCols[k])
self.resLabs[k+1].setPos(0, -12 - 1.0*k)
self.pwin.addItem(self.resLabs[k+1])
def set_offset(self, ch):
self.offValues[ch] = self.offSliders[ch].value()
def __init__(self, device=None):
QWidget.__init__(self)
self.resultCols = utils.makeResultColors()
self.traceCols = utils.makeTraceColors()
self.htmlColors = utils.makeHtmlColors()
self.p = device # connection to the device hardware
self.chanStatus = [1,0,0,0] # PyQt problem. chanStatus somehow getting preserved ???
left = QVBoxLayout() # right side vertical layout
for ch in range(self.MAXCHAN):
self.offSliders[ch] = utils.sliderVert(-4, 4, 0, 40, None)
left.addWidget(self.offSliders[ch])
self.offSliders[ch].valueChanged.connect(partial (self.set_offset,ch))
self.offSliders[ch].setStyleSheet("border: 1px solid %s;"%self.htmlColors[ch])
win = pg.GraphicsWindow()
self.pwin = win.addPlot()
self.pwin.proxy = pg.SignalProxy(self.pwin.scene().sigMouseMoved, rateLimit=60, slot=self.updateTV)
self.pwin.showGrid(x=True, y=True) # with grid
for k in range(self.MAXCHAN): # pg textItem to show the voltage scales
self.scaleLabs[k] = pg.TextItem(text='')
for k in range(self.MAXRES): # pg textItem to show the Results
self.resLabs[k] = pg.TextItem()
self.pwin.addItem(self.resLabs[k])
vLine = pg.InfiniteLine(angle=90, movable=False, pen = 'w')
self.pwin.addItem(vLine, ignoreBounds=True)
self.pwin.vLine=vLine
self.pwin.vLine.setPos(-1)
hLine = pg.InfiniteLine(angle=0, movable=False, pen = 'w')
self.pwin.addItem(hLine, ignoreBounds=True)
self.pwin.hLine=hLine
self.pwin.hLine.setPos(-17)
ax = self.pwin.getAxis('bottom')
ax.setLabel(self.tr('Time (mS)'))
ax = self.pwin.getAxis('left')
ax.setStyle(showValues=False)
ax.setLabel(self.tr('Voltage'))
self.set_timebase(self.TBval)
self.pwin.disableAutoRange()
self.pwin.setXRange(0, self.tbvals[self.TBval]*10)
self.pwin.setYRange(-16, 16)
self.pwin.hideButtons() # Do not show the 'A' button of pg
for ch in range(self.MAXCHAN): # initialize the pg trace widgets
self.traceWidget[ch] = self.pwin.plot([0,0],[0,0], pen = self.traceCols[ch])
self.diffTraceW = self.pwin.plot([0,0],[0,0], pen = self.traceCols[-1])
right = QVBoxLayout() # right side vertical layout
right.setAlignment(Qt.AlignTop)
right.setSpacing(self.RPVspacing)
l = QLabel(text= '<font color="red">' +self.tr('DC Voltages at A1, A2 and A3'))
l.setMinimumWidth(self.RPWIDTH)
right.addWidget(l)
H = QHBoxLayout()
for k in range(3):
H.setAlignment(Qt.AlignLeft)
self.voltMeterCB[k] = QCheckBox(self.tr(self.sources[k]))
H.addWidget(self.voltMeterCB[k])
self.voltMeters[k] = QLabel()
self.voltMeters[k].setMinimumWidth(50)
H.addWidget(self.voltMeters[k])
right.addLayout(H)
H = QHBoxLayout()
l = QLabel(text=self.tr('Resistance on SEN = '))
H.addWidget(l)
self.RES = QLabel()
H.addWidget(self.RES)
right.addLayout(H)
H = QHBoxLayout()
b = QPushButton(self.tr("Click for Capacitance on IN1"))
b.setMinimumWidth(200)
H.addWidget(b)
b.clicked.connect(self.measure_cap)
self.CAP = QLabel('')
H.addWidget(self.CAP)
right.addLayout(H)
H = QHBoxLayout()
b = QPushButton(self.tr("Click for Frequency on IN2"))
b.setMinimumWidth(200)
H.addWidget(b)
b.clicked.connect(self.measure_freq)
self.IN2 = QLabel('')
H.addWidget(self.IN2)
right.addLayout(H)
H = QHBoxLayout()
self.OD1 = QCheckBox(self.tr("Enable OD1"))
H.addWidget(self.OD1)
self.OD1.stateChanged.connect(self.control_od1)
self.CCS = QCheckBox(self.tr("Enable CCS"))
H.addWidget(self.CCS)
self.CCS.stateChanged.connect(self.control_ccs)
right.addLayout(H)
H = QHBoxLayout()
l = QLabel(text=self.tr('WG Shape'))
H.addWidget(l)
self.Wshape = QPushButton('sine')
menu = QMenu()
for k in range(len(self.Waves)):
menu.addAction(self.Waves[k], lambda index=k: self.select_wave(index))
self.Wshape.setMenu(menu)
H.addWidget(self.Wshape)
l = QLabel(text=self.tr('Amplitude'))
H.addWidget(l)
self.Wgain = QPushButton(self.Wgains[self.wgainindex])
menu = QMenu()
for k in range(len(self.Wgains)):
menu.addAction(self.Wgains[k], lambda index=k: self.select_wgain(index))
self.Wgain.setMenu(menu)
H.addWidget(self.Wgain)
right.addLayout(H)
H = QHBoxLayout()
l = QLabel(text=self.tr('WG'))
l.setMaximumWidth(30)
H.addWidget(l)
self.AWGslider = utils.slider(self.AWGmin, self.AWGmax, self.AWGval,100,self.awg_slider)
H.addWidget(self.AWGslider)
self.AWGtext = utils.lineEdit(100, self.AWGval, 6, self.awg_text)
H.addWidget(self.AWGtext)
l = QLabel(text=self.tr('Hz'))
l.setMaximumWidth(40)
l.setMinimumWidth(40)
H.addWidget(l)
right.addLayout(H)
H = QHBoxLayout()
l = QLabel(text=self.tr('SQ1'))
l.setMaximumWidth(30)
l.setMinimumWidth(30)
H.addWidget(l)
self.SQ1slider = utils.slider(self.SQ1min, self.SQ1max, self.SQ1val,100,self.sq1_slider)
H.addWidget(self.SQ1slider)
self.SQ1text = utils.lineEdit(60, self.SQ1val, 6, self.sq1_text)
H.addWidget(self.SQ1text)
l = QLabel(text=self.tr('Hz'))
l.setMaximumWidth(15)
H.addWidget(l)
self.SQ1DCtext = utils.lineEdit(30, 50, 6, self.sq1_dc)
H.addWidget(self.SQ1DCtext)
l = QLabel(text=self.tr('%'))
l.setMaximumWidth(15)
H.addWidget(l)
right.addLayout(H)
H = QHBoxLayout()
l = QLabel(text=self.tr('PV1'))
l.setMaximumWidth(25)
H.addWidget(l)
self.PV1slider = utils.slider(self.PV1min*1000, self.PV1max*1000, self.PV1val*1000,100,self.pv1_slider)
H.addWidget(self.PV1slider)
self.PV1text = utils.lineEdit(100, self.PV1val, 6, self.pv1_text)
H.addWidget(self.PV1text)
l = QLabel(text=self.tr('Volt'))
l.setMaximumWidth(40)
l.setMinimumWidth(40)
H.addWidget(l)
right.addLayout(H)
H = QHBoxLayout()
l = QLabel(text=self.tr('PV2'))
l.setMaximumWidth(25)
H.addWidget(l)
self.PV2slider = utils.slider(self.PV2min*1000, self.PV2max*1000, self.PV2val*1000,100,self.pv2_slider)
H.addWidget(self.PV2slider)
self.PV2text = utils.lineEdit(100, self.PV2val, 6, self.pv2_text)
H.addWidget(self.PV2text)
l = QLabel(text=self.tr('Volt'))
l.setMaximumWidth(40)
l.setMinimumWidth(40)
H.addWidget(l)
right.addLayout(H)
#--------------------------Scope Controls---------------------
l = QLabel('<font color="red">' +self.tr('Oscilloscope Channels, Range and Analysis '))
right.addWidget(l)
for ch in range(4):
H = QHBoxLayout()
H.setAlignment(Qt.AlignLeft)
self.chanSelCB[ch] = QCheckBox()
self.chanSelCB[ch].stateChanged.connect(partial (self.select_channel,ch))
H.addWidget(self.chanSelCB[ch])
l = QLabel(text='<font color="%s">%s'%(self.htmlColors[ch],self.sources[ch]))
l.setMaximumWidth(30)
l.setMinimumWidth(30)
H.addWidget(l)
self.rangeSelPB[ch] = QPushButton('4 V')
self.rangeSelPB[ch].setMaximumWidth(60)
menu = QMenu()
if ch <= 1:
for k in range(len(self.Ranges12)):
menu.addAction(self.Ranges12[k], lambda index=(ch,k): self.select_range(index))
else:
for k in range(len(self.Ranges34)):
menu.addAction(self.Ranges34[k], lambda index=(ch,k): self.select_range(index))
self.rangeSelPB[ch].setMenu(menu)
H.addWidget(self.rangeSelPB[ch])
self.fitSelCB[ch] = QCheckBox('')
self.fitSelCB[ch].setMaximumWidth(30)
H.addWidget(self.fitSelCB[ch])
self.fitResLab[ch] = QLabel('')
H.addWidget(self.fitResLab[ch])
right.addLayout(H)
self.chanSelCB[0].setChecked(True)
H = QHBoxLayout()
l = QLabel(text=self.tr('Timebase'))
l.setMaximumWidth(60)
H.addWidget(l)
self.TBslider = utils.slider(0, 8, self.TBval, 180, self.set_timebase)
H.addWidget(self.TBslider)
l = QLabel(text=self.tr('mS/div'))
l.setMaximumWidth(60)
H.addWidget(l)
right.addLayout(H)
H = QHBoxLayout()
l = QLabel(text=self.tr('Trigger'))
l.setMaximumWidth(60)
H.addWidget(l)
self.Trigslider = utils.slider(-3300, 3300, self.Triglevel, 150, self.set_trigger)
H.addWidget(self.Trigslider)
l = QLabel(text=self.tr('On'))
l.setMaximumWidth(30)
H.addWidget(l)
self.Trigbutton = QPushButton(self.tr('A1'))
self.Trigbutton.setMaximumWidth(50)
menu = QMenu()
for k in range(len(self.sources)):
menu.addAction(self.sources[k], lambda index=k :self.select_trig_source(index))
self.Trigbutton.setMenu(menu)
H.addWidget(self.Trigbutton)
right.addLayout(H)
H = QHBoxLayout()
self.SaveButton = QPushButton(self.tr("Save Traces"))
#self.SaveButton.setMaximumWidth(80)
self.SaveButton.clicked.connect(self.save_data)
H.addWidget(self.SaveButton)
#self.Filename = utils.lineEdit(100, self.tr('scope.txt'), 20, None)
#H.addWidget(self.Filename)
self.FFT = QPushButton(self.tr("Fourier Transform"))
#self.FFT.setMaximumWidth(50)
H.addWidget(self.FFT)
self.FFT.clicked.connect(self.show_fft)
right.addLayout(H)
H = QHBoxLayout()
self.Cross = QCheckBox(self.tr("Cross hair"))
self.Cross.stateChanged.connect(self.cross_hair)
H.addWidget(self.Cross)
self.Freeze = QCheckBox(self.tr("Freeze"))
H.addWidget(self.Freeze)
self.Diff = QCheckBox(self.tr('A1-A2'))
H.addWidget(self.Diff)
self.Diff.stateChanged.connect(self.show_diff)
right.addLayout(H)
#------------------------end of right panel ----------------
top = QHBoxLayout()
top.addLayout(left)
top.addWidget(win)# self.pwin)
top.addLayout(right)
full = QVBoxLayout()
full.addLayout(top)
self.msgwin = QLabel(text=self.tr('messages'))
full.addWidget(self.msgwin)
self.setLayout(full)
self.timer = QTimer()
self.timer.timeout.connect(self.update)
self.timer.start(self.TIMER)
self.recover()
#----------------------------- end of init ---------------
def update(self):
if self.Freeze.isChecked(): return
try:
if self.chanStatus[2] == 1 or self.chanStatus[3] == 1: # channel 3 or 4 selected
self.timeData[0], self.voltData[0], \
self.timeData[1], self.voltData[1], \
self.timeData[2], self.voltData[2], \
self.timeData[3], self.voltData[3] = self.p.capture4(self.NP, self.TG)
elif self.chanStatus[1] == 1: # channel 2 is selected
self.timeData[0], self.voltData[0], \
self.timeData[1], self.voltData[1] = self.p.capture2(self.NP, self.TG)
elif self.chanStatus[0] == 1: # only A1 selected
self.timeData[0], self.voltData[0] = self.p.capture1('A1', self.NP, self.TG)
except:
self.comerr()
return
for ch in range(4):
if self.chanStatus[ch] == 1:
r = 16./self.rangeVals[ch]
self.traceWidget[ch].setData(self.timeData[ch], self.voltData[ch] * r + 4*self.offValues[ch] )
if np.max(self.voltData[ch]) > self.rangeVals[ch]:
self.msg(unicode(self.tr('%s input is clipped. Increase range')) %self.sources[ch])
if self.fitSelCB[ch].isChecked() == True:
try:
fa = em.fit_sine(self.timeData[ch],self.voltData[ch])
except Exception as err:
print('fit_sine error:', err)
fa=None
if fa != None:
self.voltDataFit[ch] = fa[0]
self.Amplitude[ch] = abs(fa[1][0])
self.Frequency[ch] = fa[1][1]*1000
self.Phase[ch] = fa[1][2] * 180/em.pi
s = unicode(self.tr('%5.2f V, %5.1f Hz')) %(self.Amplitude[ch],self.Frequency[ch])
self.fitResLab[ch].setText(s)
else:
self.fitResLab[ch].setText('')
if self.Diff.isChecked() == True and self.chanStatus[0] == 1 and self.chanStatus[1] == 1:
r = 16./self.rangeVals[0]
self.diffTraceW.setData(self.timeData[0], r*(self.voltData[0]-self.voltData[1]))
self.loopCounter += 1
if self.loopCounter % 5 == 0:
for ch in range(3):
if self.voltMeterCB[ch].isChecked() == True:
try:
v = self.p.get_voltage(self.sources[ch]) # Voltmeter functions
except:
self.comerr()
self.voltMeters[ch].setText(unicode(self.tr('%5.3f V')) %(v))
else:
self.voltMeters[ch].setText(self.tr(''))
try:
res = self.p.get_resistance()
if res != np.Inf and res > 100 and res < 100000:
self.RES.setText('<font color="blue">'+unicode(self.tr('%5.0f Ohm')) %(res))
else:
self.RES.setText(self.tr('<100Ohm or >100k'))
self.p.select_range('A1', self.rangeVals[0])
self.p.select_range('A2', self.rangeVals[1])
except:
self.comerr()
# End of update
def show_diff(self):
if self.Diff.isChecked() == False:
self.diffTraceW.setData([0,0], [0,0])
def showRange(self, ch):
spacing = self.tbvals[self.TBval]
self.pwin.removeItem(self.scaleLabs[ch])
if self.chanStatus[ch] == 0:
return
self.scaleLabs[ch] = pg.TextItem(text=self.rangeTexts[ch], color= self.resultCols[ch], angle=315)
self.scaleLabs[ch].setPos(ch*spacing/3, 15.5)
#self.scaleLabs[ch].setText('hello')
self.pwin.addItem(self.scaleLabs[ch])
def select_channel(self, ch):
if self.chanSelCB[ch].isChecked() == True:
self.chanStatus[ch] = 1
self.traceWidget[ch] = self.pwin.plot([0,0],[0,0], pen=self.traceCols[ch])
else:
self.chanStatus[ch] = 0
self.pwin.removeItem(self.traceWidget[ch])
self.showRange(ch)
def select_range(self,info):
ch = info[0]
index = info[1]
if ch <= 1:
self.rangeTexts[ch] = self.Ranges12[index]
self.rangeVals[ch] = self.RangeVals12[index]
try:
self.p.select_range(self.sources[ch], self.RangeVals12[index])
except:
self.comerr()
return
else:
self.rangeTexts[ch] = self.Ranges34[index]
self.rangeVals[ch] = self.RangeVals34[index]
self.rangeSelPB[ch].setText(self.rangeTexts[ch])
self.showRange(ch)
ss1 = '%s'%self.sources[ch]
ss2 = '%s'%self.rangeTexts[ch]
self.msg(self.tr('Range of') + ss1 + self.tr(' set to ') + ss2)
def show_fft(self):
for ch in range(4):
if self.chanStatus[ch] == 1:
try:
fa = em.fit_sine(self.timeData[ch],self.voltData[ch])
except Exception as err:
print('fit_sine error:', err)
fa=None
if fa != None:
fr = fa[1][1]*1000 # frequency in Hz
dt = int(1.e6/ (20 * fr)) # dt in usecs, 20 samples per cycle
try:
t,v = self.p.capture1(self.sources[ch], 3000, dt)
except:
self.comerr()
xa,ya = em.fft(v,dt)
xa *= 1000
peak = self.peak_index(xa,ya)
ypos = np.max(ya)
pop = pg.plot(xa,ya, pen = self.traceCols[ch])
pop.showGrid(x=True, y=True)
txt = pg.TextItem(text=unicode(self.tr('Fundamental frequency = %5.1f Hz')) %peak, color = 'w')
txt.setPos(peak, ypos)
pop.addItem(txt)
pop.setWindowTitle(self.tr('Frequency Spectrum'))
else:
self.msg(self.tr('FFT Error'))
def peak_index(self, xa, ya):
peak = 0
peak_index = 0
for k in range(2,len(ya)):
if ya[k] > peak:
peak = ya[k]
peak_index = xa[k]
return peak_index
def save_data(self):
self.timer.stop()
fn = QFileDialog.getSaveFileName()
if fn != '':
dat = []
for ch in range(4):
if self.chanStatus[ch] == 1:
dat.append( [self.timeData[ch], self.voltData[ch] ])
self.p.save(dat,fn)
ss = unicode(fn)
self.msg(self.tr('Traces saved to ') + ss)
self.timer.start(self.TIMER)
def select_trig_source(self, index):
self.Trigindex = index
src = self.sources[self.Trigindex]
self.Trigbutton.setText(self.sources[self.Trigindex])
try:
self.p.configure_trigger(self.Trigindex, self.sources[self.Trigindex], self.Triglevel)
except:
self.comerr()
def set_trigger(self, tr):
self.Triglevel = tr * 0.001 # convert to volts
try:
if self.TBval > 3:
self.p.configure_trigger(self.Trigindex, self.sources[self.Trigindex], self.Triglevel,resolution=10,prescaler=5)
else:
self.p.configure_trigger(self.Trigindex, self.sources[self.Trigindex], self.Triglevel)
except:
self.comerr()
def set_timebase(self, tb):
self.TBval = tb
self.pwin.setXRange(0, self.tbvals[self.TBval]*10)
msperdiv = self.tbvals[int(tb)] #millisecs / division
totalusec = msperdiv * 1000 * 10.0 # total 10 divisions
self.TG = int(totalusec/self.NP)
if self.TG < self.MINDEL:
self.TG = self.MINDEL
elif self.TG > self.MAXDEL:
self.TG = self.MAXDEL
for k in range(self.MAXCHAN):
self.showRange(k)
def pv1_text(self, text):
try:
val = float(text)
except:
return
val = float(text)
if self.PV1min <= val <= self.PV1max:
self.PV1val = val
try:
self.p.set_pv1(val)
self.PV1slider.setValue(int(val*1000))
except:
self.comerr()
def pv1_slider(self, pos):
val = float(pos)/1000.0
if self.PV1min <= val <= self.PV1max:
self.PV1val = val
self.PV1text.setText(unicode(val))
try:
self.p.set_pv1(val)
except:
self.comerr()
def pv2_text(self, text):
try:
val = float(text)
except:
return
val = float(text)
if self.PV2min <= val <= self.PV2max:
self.PV2val = val
try:
self.p.set_pv2(val)
self.PV2slider.setValue(int(val*1000))
except:
self.comerr()
def pv2_slider(self, pos):
val = float(pos)/1000.0
if self.PV2min <= val <= self.PV2max:
self.PV2val = val
self.PV2text.setText(unicode(val))
try:
self.p.set_pv2(val)
except:
self.comerr()
def sq1_dc(self, text):
try:
val = float(text)
except:
return
if 1 <= val <= 99:
self.dutyCycle = val
s = self.SQ1text.text()
self.sq1_text(s)
def sq1_text(self, text):
try:
val = float(text)
except:
return
if self.SQ1min <= val <= self.SQ1max:
self.SQ1val = val
self.SQ1slider.setValue(self.SQ1val)
try:
if 0 <= val < 4 : val = 0
res = self.p.set_sqr1(val, self.dutyCycle)
ss = '%5.1f'%res
self.msg(self.tr('sqr1 set to ') + ss)
except:
self.comerr()
def sq1_slider(self, val):
if self.SQ1min <= val <= self.SQ1max:
self.SQ1val = val
self.SQ1text.setText(unicode(val))
s = self.SQ1text.text()
self.sq1_text(s)
def select_wgain(self,index):
self.Wgain.setText(self.Wgains[index])
self.wgainindex = index
try:
self.p.set_sine_amp(index)
except:
self.comerr()
def set_wave(self):
try:
if self.waveindex <= 1:
res = self.p.set_wave(self.AWGval, self.Waves[self.waveindex])
ss = '%6.2f'%res
self.msg(self.tr('AWG set to ') + ss + self.tr(' Hz'))
else:
self.p.set_sqr2(self.AWGval)
self.msg(self.tr('Output Changed from WG to SQ2'))
except:
self.comerr()
def select_wave(self,index):
self.Wshape.setText(self.Waves[index])
self.waveindex = index
self.set_wave()
def awg_text(self, text):
try:
val = float(text)
if self.AWGmin <= val <= self.AWGmax:
self.AWGval = val
self.AWGslider.setValue(self.AWGval)
self.set_wave()
except:
return
def awg_slider(self, val):
if self.AWGmin <= val <= self.AWGmax:
self.AWGval = val
self.AWGtext.setText(unicode(val))
self.set_wave()
def control_od1(self):
try:
state = self.OD1.isChecked()
if state == True:
self.p.set_state(OD1=1)
else:
self.p.set_state(OD1=0)
except:
self.comerr()
def control_ccs(self):
try:
state = self.CCS.isChecked()
if state == True:
self.p.set_state(CCS=1)
else:
self.p.set_state(CCS=0)
except:
self.comerr()
def measure_cap(self):
try:
cap = self.p.get_capacitance()
if cap == None:
self.msg(self.tr('Capacitance too high or short to ground'))
else:
if cap < 1.0e-9:
ss = '%6.1f'%(cap*1e12)
self.CAP.setText('<font color="blue">'+ ss +self.tr(' pF'))
elif cap < 1.0e-6:
ss = '%6.1f'%(cap*1e9)
self.CAP.setText('<font color="blue">'+ ss +self.tr(' nF'))
elif cap < 1.0e-3:
ss = '%6.1f'%(cap*1e6)
self.CAP.setText('<font color="blue">'+ ss +self.tr(' uF'))
except:
self.comerr()
def measure_freq(self):
try:
fr = self.p.get_freq()
hi = self.p.r2ftime('IN2','IN2')
except:
self.comerr()
if fr > 0:
T = 1./fr
dc = hi*100/T
self.IN2.setText(u'<font color="blue">'+unicode(self.tr('%5.1fHz %4.1f%%')) %(fr,dc))
else:
self.IN2.setText(u'<font color="blue">'+self.tr('No signal'))
def msg(self, m):
self.msgwin.setText(self.tr(m))
def comerr(self):
self.msgwin.setText('<font color="red">' + self.tr('Error. Try Device->Reconnect'))
if __name__ == '__main__':
import eyes17.eyes
dev = eyes17.eyes.open()
app = QApplication(sys.argv)
# translation stuff
lang=QLocale.system().name()
t=QTranslator()
t.load("lang/"+lang, os.path.dirname(__file__))
app.installTranslator(t)
t1=QTranslator()
t1.load("qt_"+lang,
QLibraryInfo.location(QLibraryInfo.TranslationsPath))
app.installTranslator(t1)
mw = Expt(dev)
mw.show()
sys.exit(app.exec_())