19
Operating Manual - nX, nXe, and nXp Power Amplifiers
9.2c Power On Delay
- Use this feature to delay the amplifier turning on when first powered up or when waking from
sleep. Delay is measured in increments of 100mS, with the limit at 25.5 seconds. The power amplifier should be the last device
to power up after other system components have turned on and stabilized. Multiple amplifiers on the same circuit breaker should
have staggered Power-On Delays to avoid excessive in-rush current which can trip the breaker.
9.2d Idle Time Before Sleep
- On nXe and nXp series amplifiers, the sleep clock timer can be set from 0 to 120 minutes
9.2e Fault Pin Configuration
- On nXe and nXp models,
four logic output Euroblock pins can be assigned to respond to
overtemperature, rail voltage fault, and average power fault condi-
tions as shown to the right. See
section 6.4
for application details.
9.2f Factory Installed Options
(not shown)
- Factory
installed options currently include AES3 and CobraNet. Options
are auto-detected on live amplifiers, but can be added to virtual
amplifiers when working in Design Mode.
9.2g Clear All Stored Presets
- nXe and nXp only.
9.2h Sample Rate and Master Clock Source Selection:
Changes to both of these settings can be made by clicking the <Show Advanced Control> box in this menu item. Sample rate can
be set to either 48kHz or 96kHz. Note that at 96kHz, the DSP usage doubles, resulting in half the available processing power for
filters, delay, limiting, etc.
Also note that the Feedback Suppressor cannot be used at 96kHz sample rate.
Factory default settings
are Auto Selection for clock source and 48kHz sample rate.
9.2i DVCA Control
- This feature is used in conjunction with the DSP tab gain tool called <Gain w/VCA>. Use this
feature to create up to four gain subgroups as you would on a mixing console. Any input or output channel can be added to one
or more VCA subgroups for group gain control. While no external hardware control is allowed for this subgroup, a level fader
control object can be added to the project canvas and linked to this named VCA level control.
9.2j DSP Enable/Disable
- This removes from operation the input, output, or matrix mixer DSP functions on any
channel. When removed, audio is passed directly through the stage that has been disabled.
9.3 nX Preset Options Menu
The Preset Options menu in the main device window allows user-defined setups to be named,
saved to, and recalled from the amplifier or a networked computer. Several other utility functions are
available as well. Presets are a snapshot of all current settings on a given amplifier.
nX amplifiers can store up to 31 internal presets, each preset storing control data for all
channels and audio functions. Preset names must be 20 characters or less. Changes to an individual
preset can be saved to the amplifier using <Save Preset To "nX***">, or saved to the PC using
<Save PresetTo Disk>. Individual preset files use the extension (*.pne).
9.3a Sub Presets
:
Instead of saving or recalling an entire preset affecting all de-
vice functions, a sub-preset affecting only a user defined sub-set of DSP functions can be
created. To create a sub-preset, first check the box labeled <Selected for Sub-Presets> in
all DSP control blocks to be associated with this sub preset, then under the preset options
menu click <Save Sub Preset to Disk> or <Save Sub Preset to "nX***">.
A preset or sub preset can be loaded to the amplifier by one of the following methods:
1) Use Protea
ne
software on a PC connected to the network to recall files saved on
either the PC or on the amplifier.
2) Use contact closures to load presets 1-4 from memory by wiring switches to the rear panel contact closure connector.
9.3 Preset Options
9.2e Fault Pin Configuration
