Hi,
The datasheet for the DC590B states that an external power supply can be used instead of the on-board LT3439. For this, the JP5 jumper needs to be placed into the 'off' position and the supply attached to V+ and AGND. The 'Isolated Supply Options' section in the manual states that this supply needs to be between 7V and 10V. Yet, Page 1 of the manual which shows the circuit board states that the supply should be between 10-12V. Which one is correct? I suppose it's safe to use a 10V supply, but it'd be good to know what the actual parameters are.
Thanks,
Carsten