Fluke 6062A - Page 60

NSTALLATION AND
OPERATION
Table
2-10.
IEEE-488
Address Mode Message Descriptions
MESSAGE
DESCRIPTION
pon
Power-On
Talker
Operation
When powered
up, the Generator
generates
a
Power-
On message
(pon) and clears its output buffer. The
Generator is not addressed to talk when powered
up.
Li
stener
Operation
The Generator is not addressed to listen
when
the power
is
turned
on.
Service
Request
Operation
HTA
My Talk Address
The state of the Service Request (SRQ)
signal on
pon
is determined by
the
SRQ mask. The SRQ mask is the same as
when the power
was removed-
Therefore,
if the SRQ
mask
enables the power on, output valid,
or
ready SRQs, the
SRQ signal will
be true during pon.
Talker
Operation
The
Generator is addressed to talk upon receipt of
the MTA message. The front
panel
ADDR indicator
is
lit
while the Generator is addressed to talk.
Listener
Operati
on
The Generator
unlistens
when the
MTA
message
is received.
MLA
My Listen Address
Talker
Operation
The Generator untalks
when
the MLA message is received.
Li stener
Operation
The Generator
is addressed to listen
when the
MLA
message
is
received. The front
panel
ADDR indicator
of the Generator is lit while the Generator is addressed
to
listen.
Data
Talker
Ope ration
The Generator
sends data to the IEEE-488 bus only
when
requested
by
a programming
data
message. Message formats
are
described in
the Command Description paragraphs. An
End
of
Record (EOR) character
is
sent with EOI asserted
following
all outputs.
The EOR
character is
either a
carriage return or a Line feed, depending on
the setting
of the terminator
mode.
The parity bit
is
always zero.
Multiple
output requests
are buffered
until
the buffer
is full. Processing
of
programming data messages is
stopped until the
buffer is
no
longer
full. The buffer
can be cleared with the
Clear
Buffer command ("CB"). The
buffer
is also
cleared
on power up
(pon), with
a
Clear
Command
("CL"), or with a Device Clear
interface
message
(OCL
or SDC).
Li
stener
Operation
Command
syntax, error processing, and input buffer
overflow
are described
in
the
paragraphs on Ccmimand
Processing. Refer
to Table
2-8
for a list
of
IEEE-488
commands that
are recognized by the Generator.
IFC
Interface Clear
Talker
Operation
The Generator untalks
and unlistens when the IFC message
is received.
2-44