Capabilities of the IEEE-488 Bus Interface
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5-4
5.4 Capabilities of the IEEE-488 Bus Interface
The IEEE computer interface has the following capabilities defined by the IEEE-488
standard:
SH 1 Handshake source function
AH 1 Handshake sink function
T6 TALKER function
L3 LISTENER function
RL1 Remote control
DC1 Reset function
DT1 Initiate function
SR1 Service request function
General IEEE-488.1 Messages
The instrument understands the universal commands DCL, SPE and SPD. The
command DCL (device clear) brings the instrument into its basic state (V dc, 300V).
Of the addressed commands it understands GET, GTL, LLO and SDC.
The commands have the following effects:
DCL Device Clear Sets the instrument to the basic state
SDC Selected Device Clear Sets the instrument to the basic state
GTL Go To Local Terminates remote control status
LLO Local Lock Out The instrument cannot be switched to manual
control via the local button (keyboard lockout)
SPE Serial Poll Enable Prepares for serial polling
SPD Serial Poll Disable Terminates serial polling
GET Group Execute Trigger Initiates a trigger for the addressed devices
UNT UnTalk Addressing cancellation - is not displayed
UNL UnListen Addressing - is not displayed
PPC, PPU, TCT not supported
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