- From: Luis Martinez <luimarma_at_marcosa.e.telefonica.net>
- Date: Sat, 18 Oct 2003 18:39:55 +0200
Hello, I am trying to get analog to digital conversion from a 0V to 10V output from a sensor. Although with a voltage tester the output of the signal is stable (the sensor is allways measuring the same for testing), when I read it with comedi I have an unstable read. Also if I read another channel that is not used (no signal on it) I have a value similar to the one I get on the channel of the sensor. I have tried to read the signal in differential and single, and with AREF_GROUND and AREF_COMMON. I am using latest comedi and an Advantech PCI-1710HG card. I read samples with the comedi_data_read instruction as follows... comedi_data_read(it, shcom->ai_subdev,AI_CHANNEL_IBC, DEFAULT_CHANNEL_GAIN_AI, AREF_COMMON, &data); Please help me! I am desperated!! -- ----------------------------------------------- Luis Javier Martínez Martínez
Received on 2003-10-18Z15:39:55