Linear ANALOG DEVICES LTC7106 Demo Manual page 6

DEMO MANUAL DC2830A
If the write is successful, you will see the following
message:
In the Telemetry Plot, you will see IDAC current value
change to the commanding value:
6
e. If you want to change the IDAC current to a negative
value (meaning sinking current), you need to change
the MFR_IOUT_MAX_LTC7106 to a negative value first
(see data sheet for more details).
f. You can also change IDAC range between Nominal,
Low and High Range, as well as the Time Per Step in
LTpowerPlay, as shown in the following picture.
Rev 0