diff options
Diffstat (limited to 'qolab/hardware')
| -rw-r--r-- | qolab/hardware/scope/rigolds1054z.py | 77 |
1 files changed, 11 insertions, 66 deletions
diff --git a/qolab/hardware/scope/rigolds1054z.py b/qolab/hardware/scope/rigolds1054z.py index 674f4d0..177f72a 100644 --- a/qolab/hardware/scope/rigolds1054z.py +++ b/qolab/hardware/scope/rigolds1054z.py @@ -236,80 +236,25 @@ class RigolDS1054z(ScopeSCPI): pass # we repeat this loop iteration again logger.debug(f"final {chunk_size=}") - if True: - return wfRaw, errorFreeChunkSize, errorProneChunkSize + if maxRequiredPoints is None: + maxRequiredPoints = self.maxRequiredPoints ( sparsing, Npnts, availableNpnts, maxRequiredPoints, - ) = self.calcSparsingAndNumPoints(availableNpnts, maxRequiredPoints) - if decimate: - Npnts = availableNpnts # get all of them and decimate later - if (sparsing == 1 and Npnts == availableNpnts) or decimate: - # We are getting all points of the trace - # Apparently sparsing has no effect with this command - # and effectively uses SP=1 for any sparsing - # but I want to make sure and force it - cstr = "WAVEFORM_SETUP NP,0,FP,0,SP,1" - # technically when we know Npnts and sparsing - # we can use command from the follow up 'else' clause - else: - # we just ask every point with 'sparsing' interval - # fast to grab but we could do better with more advance decimate - # method, which allow better precision for the price - # of longer acquisition time - cstr = f"WAVEFORM_SETUP SP,{sparsing},NP,{Npnts},FP,0" - # Note: it is not enough to provide sparsing (SP), - # number of points (NP) needed to be calculated properly too! - # From the manual - # WAVEFORM_SETUP SP,<sparsing>,NP,<number>,FP,<point> - # SP Sparse point. It defines the interval between data points. - # For example: - # SP = 0 sends all data points. - # SP = 1 sends all data points. - # SP = 4 sends every 4th data point - # NP — Number of points. It indicates how many points should be transmitted. - # For example: - # NP = 0 sends all data points. - # NP = 50 sends a maximum of 50 data points. - # FP — First point. It specifies the address of the first data point - # to be sent. - # For example: - # FP = 0 corresponds to the first data point. - # FP = 1 corresponds to the second data point - self.write(cstr) + ) = calcSparsingAndNumPoints(availableNpnts=availableNpnts, maxRequiredPoints=maxRequiredPoints) + if not decimate and sparsing > 1: + wfRaw = wfRaw[::sparsing] trRaw = Trace(f"Ch{chNum}") - - qstr = f"C{chNum}:WAVEFORM? DAT2" - # expected full reply: 'C1:WF DAT2,#9000000140.........' - try: - wfRaw = self.query_binary_values( - qstr, - datatype="b", - header_fmt="ieee", - container=np.array, - chunk_size=(Npnts + 100), + trRaw.values = wfRaw.reshape(wfRaw.size, 1) + if decimate and sparsing != 1: + numtaps = 3 + # not sure it is the best case + trRaw.values = scipy.signal.decimate( + trRaw.values, sparsing, numtaps, axis=0 ) - if self.resource.interface_type == InterfaceType.usb: - # Somehow on windows (at least with USB interface) - # there is a lingering empty string which we need to flush out - r = self.read() - if r != "": - print(f"WARNING: We expected an empty string but got {r=}") - trRaw.values = wfRaw.reshape(wfRaw.size, 1) - if decimate and sparsing != 1: - numtaps = 3 - # not sure it is the best case - trRaw.values = scipy.signal.decimate( - trRaw.values, sparsing, numtaps, axis=0 - ) - except ValueError as err: - # most likely we get crazy number of points - # self.read() # flushing the bogus output of previous command - print(f"Error {err=}: getting waveform failed for {qstr=}") - wfRaw = np.array([]) trRaw.config["unit"] = "Count" trRaw.config["tags"]["Decimate"] = decimate return (trRaw, availableNpnts, Npnts) |