Rwilcox

Hello, My Name is Robert and I have been working with Measurement computing Digital/Analog Data acquisition hardware. Hoping to be a valuable member of the group!

Hello, I have a USB-DIO96H that I have configured using the UL tools for python. The unit is configured for 72 Digital outputs and 24 Digital Inputs(though I've attempted only 8 outputs with no change). Control of the Digital outputs appears to be working as I measure ~5V on high and 0V on low. I've noticed that when I attach a minimal load to the digital outputs that the voltage is dropping to 3.5V (measured using Multi-meter), which is an issue for my application. The 5V pin seems to be unaffected. I've even gone to the point of attaching a 10K resistor from a digital output to GND (Nothing else is driven high) and still I measure 3.5V(should be a .5mA draw). I have a second USB-DIO96 and it's behavior is identical. To config the port, I call (Just the library calls for reference): ul.get_daq_device_inventory(InterfaceType.ANY) ul.create_daq_device(board_num, device) ul.d_config_port(self.board_num, DigitalPortType.FIRSTPORTA, DigitalIODirection.OUT) Am I missing something in the config? Should the USB-DIO96 be able to source .5mA without dropping to 3.5V? The specs state that I should be able to source 24mA per port. (My USB-1408FS is able to source .5mA with no voltage drop) Thank you in Advance, Robert