Tektronix FG 5010 User Manual

Programming - FG 5010
programs
,
the user
may
add
alpha
characters
to
the
full
length
version . Alpha
charcters may also be
added to a que
ry
header
, provided
the
question
mark is at the
end .
USER ?
USERE ?
USEREQ ?
USEREQUEST ?
Multiple
arguments are
separated by a comma ;
however
,
the instrument will also accept a space or spaces as a
delimiter .
2,3
2
SP3
2
,
'
Sp3
NOTE
In
the last
example , the space
is
treated as a format
character because it follows the comma ( the argument
delimiter ) .
Number
Formats
The instrument accepts the following kinds of numbers
for any
of the
numeric arguments .
Signed or
unsigned
integers ( including
+0 and −0
) .
Unsigned integers are interpreted as positive .
imples :
+1 , 2
, -1 ,
-10
.
Signed or
unsigned
decimal
numbers . Unsigned
deci
mal numbers are interpreted as positive .
Examples :
-3.2 ,
+5.0
,
1.2
3-28
Floating
point numbers
expressed
in
scientific
notation .
Examples :
+ 1.0E -
2 , 1.0E - 2
, 1.E - 2 ,
0.01E
+
Rounding of Numeric Arguments
The instrument rounds numeric arguments to the nearest
unit of resolution and then checks for out - of - range
conditions .
Message
Protocol
Upon receipt by the instrument , a message is stored in
the Input Buffer , then processed , and executed . Processing
a message consists of decoding commands , detecting
delimiters , and checking syntax . For setting commands , the
instrument then stores the indicated changes in the Pending
Settings Buffer . If an error is detected during processing ,
the instrument asserts SRQ , ignores the remainder of the
message
, and
resets the
Pending
Settings
Buffer .
Resetting
the
Pending
Settings
Buffer
avoids
undesirable
states
that
could
occur if
some
setting
commands are
executed
while
others in the same message are not .
Executing a
message
consists
of
performing
the
actions
specified
by its
command
( s ) .
For
setting
commands , this in
volves
updating the
instrument
settings and
recording these
updates
in the
Current
Settings
Buffer . The
setting com
mands
are
executed in groups —
that is , a series
of setting
commands is processed and recorded in the Pending
Settings
buffer
before execution
takes
place
. This
allows
the
user to
specify a
new
instrument state
without
having to
consider
whether a
particular sequence
would be
valid . Nor
mally ,
execution
of the
settings
occurs
when the
instrument
processes
the
message
terminator
, a
query -
output
com
mand , or an operational command in a message . The nor
mal execution of settings is modified by the DT setting
commands .
When the instrument processes a query - output_com
mand
in a
message , it
executes any
preceding
setting com
mands to
update
the
state of the
instrument
. It then
executes the query - output command by retrieving the ap
propriate
information and
putting
it
in the
Output Buffer .
Processing
and execution
then continue
for
the
remainder
of
the
message
.
The data are
sent to the
controller when
the
instrument is made
a talker .
When the
instrument
processes
an
operational
command
in
a
message , it
executes
any
preceding
setting
commands
before
executing the
operational command
.
Multiple Messages
The
Input Buffer
has finite
capacity and thus
a single
message
may be
long enough
to fill
it . In
this case , a
portion
of
the
message is
processed
before the
instrument
accepts
additional input
. During
command
processing , the
instru
ment holds off additional data ( by asserting NRFD ) until
space is
available in the
buffer
.
When
space is available
, the
instrument
can
accept a
second message
before
the first
has
been
processed
. Howver ,
it holds off
additional
mes
sages with
NRFD
until it
completes
processing
the
first .
After the instrument executes a query - output command
in
a
message
, it
holds the
response
in
its
Output
Buffer
until
the
controller makes
the instrument
a
talker . If the
instru
ment
receives
a new
message before
all of the
output from
the
previous
message
is
read , it
clears the
Output
Buffer
before
executing the new
message . This
prevents
the con
troller from getting unwanted data from old messages .
One
other situation
may
cause the
instrument
to delete
output . the
execution
of a long
message
might cause both
the
Input and
Output
Buffers to
become full
.
When
this
oc
)
J
U
U
U
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Tektronix FG 5010 Specifications

General

Brand	Tektronix
Model	FG 5010
Category	Portable Generator
Language	English