Keithley 2016 User Manual page 258

D-16 IEEE-488 Bus Overview
PP (Parallel Poll Function) — The instrument does not have parallel polling capabilities
(PP0).
DC (Device Clear Function) — DC1 defines the ability of the instrument to be cleared
(initialized).
DT (Device Trigger Function) — DTI defines the ability of the Model 2016 to have readings
triggered.
C (Controller Function) — The instrument does not have controller capabilities (C0).
TE (Extended Talker Function) — The instrument does not have extended talker
capabilities (TE0).
LE (Extended Listener Function) — The instrument does not have extended listener
capabilities (LE0).
E (Bus Driver Type) — The instrument has open-collector bus drivers (E1).