Possible reasons for failure of connection to laser #4
Description
Code and problem description
https://github.com/gregmoille/InstrumentControl/blob/master/pyLaser/newfocus.py
I ran the code and find it has problems connecting to the laser.
To be detailed, from line 182 to 185
out = self._dev.OpenDevices(self._idLaser, True)
tab = self._dev.GetDeviceTable()
#empty buffer
out = self._dev.Read(self._DeviceKey, self._buff)
the first 'out' shows 'true', the seconde 'out' shows '-1' and the 'tab' shows 'System.Collections.Hashtables'. I also tried a query function after these lines and still got no answer, which means if fail to connect to the laser.
Troubleshooting
- The laser has connected to the laptop by usb and it can be controlled by "New Focus TLB-6700 Tunable Laser Application" software.
- The device key and id are also double-checked by running labview code with them and they are correct
- Newport and Newport.USBComm.USB() have also been successfully imported after check of the variable
What else could possible cause the failure of connection? Thank you very much.