E-4 Return to Section Topics 6482-901-01 Rev. A / August 2012
Appendix E: GPIB 488.1 Protocol Model 6482 Dual-Channel Picoammeter / Voltage Source Reference Manual
General operation notes
• The TALK, LSTN, and SRQ indicators are not functional in the 488.1 protocol. This speeds
up data throughput greatly. The REM indicator still operates since it is critical to fundamental
GPIB operation.
• If the instrument is in REMote, the GTL command may not put the Model 6482 into the local
mode. Only the front panel LOCAL key is guaranteed to operate, if not in local lockout
(LLO). GTL will still disable LLO.
• IEEE-488 bus commands and features (GET, IFC, SDC, DCL, LLO, Serial Poll, and SRQ)
are still fully supported.
• Multiple TALKs on the same query are supported as in the SCPI protocol. This feature is
useful when reading back long ASCII strings.
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