Nautel NV30LT-N, Operation & Maintenance Manual

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NV30LT-N OPERATIONS & MAINTENANCE MANUAL OPERATING THE TRANSMITTER
VERSION 0.1 2015-03-01 PAGE 3.2.63
Other Settings - (see Figure 3.2.41 ) :

Other Settings:
Provides the following sub-functionality:
 Pilot Level: enter value between 6 and 12 % (typically 9 %). This level is added to the
composite baseband signal.
 Pilot 1 PPS Sync: select Enabled or Disabled.
 Pilot Sync Phase: if Pilot 1 PPS Sync is enabled, enter value between 0 and 360 degrees
(typically 0 degrees).
NOTE
:
The Pilot Level, Pilot 1 PPS and Pilot Sync Phase settings are displayed for all Audio Source
selections, but will have no effect on presets with MPX or MPX Over AES sources.
 Sample Output: determines which sample signal will be present on exciter’s rear panel
PILOT/
MPX SAMPLE OUT
BNC connector. Select Pilot (default setting, pilot sample present) or MPX
(Composite) (composite baseband signal present).
 Audio Delay: select Enabled, then enter value in the allowable range of 0 to 12000 ms. Default
is 0. Audio Delay is used to time align the receiver output of decoded analog and digital audio
signals.
 Mod Loss Timeout: select Enable if so required. If Enable is selected the following sub-fields
will appear:
–
Action
: select the action to take on the loss of a modulating signal post the timeout period. Select
None
(no resulting action),
Inhibit
(inhibits the RF output and fans until the audio returns) or
Change Preset
(changes the active preset).
–
Mod Loss Preset
: displayed only if
Action
is set to
Change Preset.
Select the preset from the drop
down list that will activate upon the loss of a modulating signal, post the timeout period.
–
Timeout Minutes
: sets the delay, in minutes, between modulation loss detection and the resulting
action. Enter a value in the allowable range of 0 and 255 minutes.
–
Timeout Seconds
: sets the delay, in seconds, between modulation loss detection and the resulting
action. Enter a value in the allowable range of 0 and 59.9 seconds.
–
Threshold
: sets the threshold for modulation loss detection. Enter a value in the allowable range of 0 and
100%.
(see Configuring a Mod Loss Backup Preset on page 3.4.4 for detailed instructions).
 Hard Limiter: select Enabled, then enter the hard limit threshold percentage (allowable range
is 0-160%, defaulted to 140%). If enabled, the modulation level will be limited (audio signal
clipped or distorted) if it exceeds the hard limit threshold.