I am designing a device that output analog voltage in the range of -5 V to +5 V representing a certain measurement (single-ended earth grounded). My plan is to use a regular BNC cable, (earth grounded) connecting to a ADC acquisition device.

The bandwidth of the signal is 0 - 10 kHz

How to avoid a ground loop here if both devices are earth grounded?

What do you think of the following approaches?

1. Make sure that both devices are connected to the same power outlet
2. Earth ground the BNC cable only at the ADC acquisition device side
3. Use twin-ax cable and make the analog voltage differential instead of single ended.