7 ieee 488 bus implementation, 1 my talk address, 2 my listen address – Measurement Computing Analyzer488 User Manual

Page 216

Advertising
background image

Section 6

Instrument Simulator

6.6

Execute

X

Execute all commands in command buffer

Query

?

Return current selection or mode of the command
preceding the ?

6.7 IEEE 488 Bus Implementation

The Analyzer488 implements many of the capabilities defined by the IEEE 488

1978 specification. These are discussed in the following sections. Those bus uniline
and multiline commands that the Analyzer488 does not support or respond to include:

Remote Enable (REN)
Go to Local (GTL)
Local Lockout (LLO)
Group Execute Trigger (GET)
Take Control (TCT)
Parallel Poll Configure (PPC)
Parallel Poll Unconfigure (PPU)
Parallel Poll Disable (PPD)

6.7.1 My Talk Address (MTA)

When the Analyzer488 is addressed to talk, it outputs either waveform

data or buffer data to the IEEE 488 bus in the format as specified by the Gn,
Hn

, Wn, Jn, Kn, Yn, Zn, and In commands.

The Analyzer488 can send Analyzer488 status (U0), or keyboard status

(U1 and U2), without affecting any timing functions. After the requested
status is output, the presently programmed Gn format will be the selected
format.

6.7.2 My Listen Address (MLA)

When the Analyzer488 is addressed to listen, it accepts characters from

the active talker and interprets these characters as commands and command
parameters. These commands are explained in paragraph 6-8.

Advertising