Keysight VXI Bus 75000 C Series User And Programming Manual page 51

Using the Handshake Modes Using the Keysight E1458A Digital I/O Module
Handshake Timing
Handshake timing is set through the SCPI commands
[SOURce:]DIGital:DATAn[:type]:HANDshake:DELay <time> or
[SOURce:]DIGital:HANDshakenDELay <time>. Handshake timing is generally
used for data output operations. Timing for data input affects only STRobe
handshake mode.
Keysight E1458A 96-Channel Digital I/O Module User Guide 41