Norsonic nor140, Instructional Manual

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191
Norsonic Nor140
Instruction Manual
191
Digital output control lines
The Nor140 instrument has 4 digital output lines
which all can be used to control external devices or
functions based on the internal status of the instrument.
The digital output lines are named DO-1 to DO-4 (see
the pin configuration of the general I/O sockets for
connection details).
The function of each digital output line is selected by
the user through the Digital I/O menu found by using
the key sequence
SETUP – 1
: Instrument menu – 2:IO/
Print – 1:DigIO. The following functions are available
for each of the four output lines:
OFF
No function on this output line (output level
continuously low(0))
USER
Output level high (1) or low (0) is controlled
via remote operation of the Nor140 instrument
(see remote command list for details).
CAL
Output level is high (1) as long as the instru-
ment is performing the calibration procedure,
either manually through the Calibration menu,
or remotely from an external software.
GO
Output level is high (1) when the “Go / NoGo”
quality control comparison test of the Refer-
ence Spectra is successfully fulfilled (see
chapter 18 for details).
BUSY
Output level is high (1) when the “Go / NoGo”
quality control feature of the Reference Spec-
tra is in operation (see chapter 18 for details).
OVL
Output level is high (1) as long as the instru-
ment detects an input signal above the opera-
tional dynamic range (“Overload”).
RUN
Output level is high (1) as long as the instru-
ment is in the Running status (i.e. the Nor140 is
making a measurement).
REC
Output level is high (1) as long as the instru-
ment is making an audio recording of the input
signal.
Some features in the instrument may force the digital
output line into pre-set settings which avoid the user
from using the above selection for one or more of the
output lines. The Nor140 has the following pre-set set-
tings:
The microphone check feature
is controlled
from point 7 in the Misc.menu found using the key
sequence
SETUP – 1
: Instrument menu –
9
: Misc.par.
By turning on the DO-3 setting, the digital output line
3 will be permanently connected to the microphone
check feature independent of any previous setting.
Turning OFF this feature will allow normal user setting
of the DO-3 again.
The Nor1516 feature
used for wireless operation during
building acoustics measurement as part of the Nor1516
system is controlled from point 3 in the Misc.menu
found using the key sequence
SETUP – 1
: Instrument
menu –
9
: Misc.par. By turning on the Nor1516 feature
inside the Nor140, the digital output lines 1 and 2 will be
permanently set to
SPK
and
DECT
respectively. These
settings are required for normal operation of the wireless
system. Turning OFF this feature will automatically set
DO-1 and DO-2 to OFF again.
The “GO / NOGO” comparison feature
described in
chapter 18 is turning the digital output lines 1 and 2 to
the permanently setting as
BUSY
and
GO
respectively.
Turning OFF this feature will allow normal user setting
of the DO-1 and DO-2 again.