Where can I find the U2701A/U2702A IVI-driver's programming reference guide?
You may find the U2701A/U2702A IVI-driver's programming reference guide in "Documentation" under the Keysight IVI driver's folder upon completion of the driver installation.
You can find the driver in the Product Reference CD that is shipped together with the unit. Alternatively, find the driver from the products' Driver & Software page in this website. U2701A Driver & Software page