I'm trying to set the output channels on the LTC2662 through the QuikEval GUI, but I keep receiving fault messages, so I'm hoping I can get some help or explanation as to why this is happening.
Here's how I'm setting up my connections:
I'm using the DC2692A demo board for this. As described in the Help > Show Online webpages of QuikEval, I'm connecting V+ to 15V, V- to -15V, and GND to ground on the demo board. I have no other connections other than probes, so please do let me know if I'm missing something crucial.
When I open the QuikEval GUI, I do these things in this order:
- Change Span for All DACs to 100mA
- Enable Specify Currents in mA
- Change the Channel 0 value to ~5mA, then Write & Update
The immediate error I get is either the red Fault LED turning on or an OC error on the GUI (both telling me the same thing, I assume). If I return everything to default, I'm able to get the correct V+ and V- values through the Monitor Mux Channel, which leads me to think that I am missing some steps in my list above.
All I want to do is be able to see a current on my multimeter that matches the current I'm setting in the GUI, so I'd appreciate any help, or even better, a step-by-step on how to set this up and avoid the OC fault. I've read through all the datasheets, but I wouldn't put it past myself to have missed an important paragraph.
Thanks in advance.