numberof
digits
in
byte count
*STB?
The Read Status Byte query
al10ws
you to read the status byte and Master Sununary
Status bit.
The
device returns a numeric value between 0
and
255.
*TRG
If
the instrument is
in
a TRIGgered mode
of
operation and the trigger source is set
to
external
or
manual.
*WAI
The
Wait-to-Continue command prevents the device from executing any further
commands
or
queries until the No-Operation-Pending flag is TRUE.
5.8 HIGH SPEED BINARY WAVEFORM TRANSFER
The
High Speed Binary Waveform Transfer operates with the
GPill
interface.
Do
not
attempt a <block> transfer using the TRACe[:DATA] commands when using the RS-
232-C
intl':rf~œ
\lnl~l'ls
hardware handshaking is enabled. Otherwise, this will result in
unpredictable behavior from the
Model
395.
Use
the
SCPI
command
TRACe[:DATA] <trace_name>,<block> to
download
user-
defined Waveforms :from the remote controller to the ARB. Likewise, use the query
form,
TRACe[:DATA]?
<trace_name>, to upload the waveform
data
back
up
to the
controller.
In
both
of
these cases, the
data
block
is
transferred
using
the
IEEE-488.2
Definite
Length Arbitrary Block
Data
format (see the figure below). This format for block data
transfer makes
it
possible to rapidly move the large amount
of
data required for arbitrary
waveforms.
Definite Length Arbitrary Black Data Format
~
~
'~--~v"""--_--J'/
2 bytes per point
(see format below)
high byte
87654321
MSB
low byte
87654321
LSB
,~
....,
-..J/
V-
each point is 12-bit binary value
(0
to 4096 decimal)
To
send a
block
of
waveform data, send an
ASCII
"#"
($23), then
an
ASCII
encoded
digit whose value signifies the number
of
digits
in
the byte count, then
ASCII
encoded
digit(s) representing the byte count, then
the
two
byte binary
data
words (MSB [Ifst).
Remote Opération
5-51
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