I purchased a PicoScope6403A for the intended use for long term recordings multiband laser-radar echoes. The laser radar emits pulses at 10Hz repetition rate, and the plan is to record the echoes in 4-bands at 1GHz (downsample ratio 5 -> "12bit"), with some 100.000 sample points in each channel (before downsampling). I verified that I am not able to automatically store the returns using the PicoScope6 software. I then fought to implement this rather simple case in Matlab through the DLL but got lost in the huge amount of incorrect trigger settings and weird library pointers. Eventually I turned the frustrating wire-ring of LabView and almost got it to work. I used the most recent software development kit and the PicoScope6000ExampleBlock.vi.
Everything works as supposed to, the only problem is that I am unable to change the trigger source to the AUX input on the rear panel. I connected one of the probes from the probe calibration output to the AUX and another probe from calibration output to Channel A to verify that triggering works. I tested the functionality in PicoScope6 software and selected AuxIO as trigger source and it works. In the LabView example I went into the TriggerSettings cluster and investigated the TriggerSource dropdown. The dropdown doesn't have any AUX option and outputs integers from 0..3 according to the channel choice which are apparently fed into the ps6000SetSimpleTrigger in the sub-VI by calling a picostatus block. In the manual it is stated that the trigger source can be string values of e.g. "PS6000_CHANNEL_A" etc. and also "PS6000_TRIGGER_AUX" but there is no mentioning of what integer correspond to what. In the enumeration "PS6000_TRIGGER_AUX" appear on the zero-based seventh row, so I attempted to edit the values of the TiggerSource dropdown and tried both with the integer 4 and 6 but none of this works. Besides the trigger threshold level is given in int16 counts, and i have been unable to find the voltage range of the AUX input to rescale that, but I scanned through all of the values in order to find a stable triggering with no luck.
I appreciate any urgent solutions as I will travel to the laser radar station in Greece next week to install the sampling board.
Kind regards, Mikkel Brydegaard