Fluke 6060B - 3-41. Main Phase-Lock Loop

INSTALLATION
AND OPERATION
2-42
To select
the
talk-only mode, set the TALK ONLY address switch to I (up).
If the talk-
only address switch and
the listen-only address switch are set to
1,
the talk-only
mode is
selected.
In the
talk-only
mode, the listener, remote/ local, service request, device clear,
and
device
trigger interface
functions do not apply.
If the talk-only
mode is
selected, the Generator is always addressed to talk
and
the front
panel ADDR indicator is always lit. The
Step
Up (“SU”)
or Step Down (“SD”) message
is
sent when the
[
*
]
STEP or
[ ]
STEP front panel keys are
pressed.
This output is not
buffered and if no listener is connected
to
the IEEE-488 Interface, no output will be sent.
A carriage return
followed
by
line feed (with the EOI signal true) are always
sent as
the
end of
record.
2-47. Listen-Only
Mode
To select the
listen-only
mode, set the LISTEN ONLY address switch to
1
(up).
If the
talk-only
address switch and the
listen-only address
switch are set to
1,
the talk-only mode
is selected.
If the
listen-only mode is selected, the
Generator is
always addressed to listen, and
the
front panel ADDR indicator is
always
lit. The Generator listens and
responds to all data
messages on the IEEE-488 Interface. The
response
to data messages is the
same as
in the
addressed mode
of operation except that requests
for
talker output are ignored.
In the listen-only mode, the talker,
remote/local, service request, device clear, and device
trigger
interface
functions do not apply.
2-48. Command
Syntax
The Generator IEEE-488
bus
commands alphabet consists of the letters A
through
Z
(upper and lower case letters
are
treated equally), digits
0
through
9,
and the
following
special characters:
@
.
,
;
+
-
CR LF
Spaces, tabs
characters,
and the parity bit are ignored.
The IEEE-488
commands for the Generator consist of the
following
three parts:
Header
Numeric
Suffix