PAGE 44 / 80 NXAMPMK2 USER MANUAL
Here are the parameters that can be configured:
MONITORING MODE
Here can be modified the Input Monitoring mode for the selected channel. 2 modes are available.
- OFF: The Input Monitoring is turned off. The channel input is not monitored, no alerts are raised.
- ON: The Input Monitoring is turned on. The channel input is monitored.
DETECTION THRESHOLD
The input level in dBFS for the selected channel above which the external pilot tone level will trigger the
not be triggered by background noise nor music signal but only with the pilot tone.
DETECTION FREQUENCY
The nearest frequency matching the external pilot tone should be entered here. This parameter is used to
setup the detection notch filter inside the NXAMPmk2 to isolate the input pilot tone from other input signals.
INPUT VALID HOLD
The external pilot tone can be either continuous sinewave or burst signal.
In case burst signal is used, this parameter can be used during a
specified period of time. It is recommended to use a hold time slightly longer than the external burst pilot
tone off-cycle time to ensure the fastest detection time once the input signal is invalid.
If the external burst pilot tone generates a 250ms pilot tone every second for each channel, there is a gap
of 750ms between two bursts. If the Input valid hold time is set to a value > 750ms to avoid any error during
the OFF time
the burst signal is detected, and when the detection ends s after.
Considering the detection delay (due to detection filter settling time), if the input line is interrupted exactly
at point A at point B, which is the maximum reaction time.
If line is interrupted before point A (on the ON time), we still get a reaction time of 1s+.
(Note: We can consider around 10ms because of the high selectivity of the detection filter).
Example with bursts of 250ms every 1sec (with 1sec hold time)
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