Appendix D: GPIB Interface Specifications
Table D-2: Interface Functions (cont.)
Interface Function Subset Meaning
Device Clear DC1 The instrument can respond to both the DCL (Device
Clear) interface message and to the Selected Device
Clear (SDC) interface message when the instrument
is listen-addressed.
Device Trigger DT1 Device Trigger capability, the instrument does
respond to the GET (Group Execute Trigger)
interface message.
Electrical E2
The instrument uses tri-state buffers, which are
optimal for high-speed data transfer.
Listener L4 The instrument becomes a listener when it detects
the listen address being sent over the bus with the
ATN line asserted. The instrument ceases to be a
listener and becomes a talker when it detects the
talk address being sent over the bus with the ATN
line asserted.
Parallel Poll PP0
No Parallel Poll Capability, the instrument does
not respond to PPC (Parallel Poll Configure), PPO
(Parallel POll Disable, PPE (Parallel Poll Enable), or
PPU (Parallel Poll Unconfigure) interface messages,
nor does it send a status message when the ATN
and EOI lines are asserted simultaneously.
Remote/Local
RL1
The instrument can respond to both GTL (Go To
Local) and LLO (Local Lock Out) interface messages.
Service Request SR1 The instrument can assert the SRQ line to notify the
controller in charge that it requires service.
Source Handshake SH1
The instrument can initiate multiline messages to
send across the interface to other devices.
Talker T5 The instrument becomes a talker when it detects the
talk address being sent over the bus with the ATN
line asserted. The instrument ceases to be a talker
and becomes a listener when it detects the listen
address being sent over the bus with the ATN line
asserted. The instrument also ceases to be a talker
when it detects the talk address of another device
being sent over the data lines with AT N asserted.
D-2 DSA/CSA/TDS8X00/B Series Programmer Manual
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