Rion NA-28, Manual, Page: 30 / 98

22
Block Reception Processing
For reception processing, the unit is initially in the <
STX
> wait (idling) mode,
except during a sequence while waiting for response from the computer.
In idling mode, the sound level meter disregards any data except <
STX
>.
Command Types
There are two types of commands: setting commands and request com-
mands.
Setting command
This type of command serves for changing the sound level meter status or
measurement parameters. Only some commands of this type will produce a
response from the sound level meter.
For commands that have a response, this consists of status information re-
turned after the setting command has been processed.
Request command
This type of command serves for getting information about unit settings and
for obtaining measurement data including display data and stored data. The
sound level meter returns the requested data.