User manual

D
Interface Function Codes
The interface function codes, which are part of the IEEE-488 standards, define an instrument’s ability to support various inter-
face functions and should not be confused with programming commands found elsewhere in this manual. The interface function
codes for the Model 2001 are listed in Table D-1. The codes define Model 2001 capabilities as follows:
SH (Source Handshake Function) — defines the ability of the instrument to initiate the transfer of message/data over the data
bus.
AH (Acceptor Handshake Function) — defines the ability of the instrument to guarantee proper reception of message/data
transmitted over the data bus.
T (Talker Function) — The ability of the instrument to send data over the bus to other devices is provided by the T function.
Instrument talker capabilities (T5) exist only after the instrument has been addressed to talk.
L (Listener Function) — The ability for the instrument to receive device-dependent data over the bus from other devices is
provided by the L function. Listener capabilities (L4) of the instrument exist only after it has been addressed to listen.
SR (Service Request Function) — SR1 defines the ability of the instrument to request service from the controller.
RL (Remote-Local Function) — RL1 defines the ability of the instrument to be placed in the remote or local modes.
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 182 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)