Datasat AP20 - Page 95

AP20 Installation and Operating Guide Page 95
AP20 Installation & Operating Guide Document # 9301H39200 Ver. 1.25
 Analog Level for channels 1-16 – This affects only the analog output signal, not the digital
output. The value is the same as that shown in the EQ screen. Range is from -20dB to
+10dB in .5 dB increments. To change, first select the control, then use the front panel
adjustment knob to adjust up or down.
 Invert – Select control to enable/disable channel invert. Box turns blue when invert is
enabled. (Invert is used primarily for test purposes.)
 Chan Mute for channels 1-16 – Select the control to mute or unmute the selected channel.
Multiple channels may be muted. Channels remain mute when exiting the screen. The mute
will reset after a power cycle.
 Master Fader – Select control and use the knob to change the master fader setting.
Normally SPL meter readings are taken with the fader set to 7.0. This fader is the same as
the one in the home page.
 Master Mute on/off control will mute/unmute all channels. This mute enable is the same
as that on the home page. Use it in case of accidental loud noise.
 Pink Noise Multi Chan – Enabling allows multiple channels of pink noise to be chosen.
When multi-channel pink noise is disabled, selecting pink noise on one channel
automatically disables pink noise from the other channels.
 Digital Volume Enable and Offset controls are present. When the digital volume is not
enabled, the master fader will have no effect on the Digital Volume. Once Digital Volume
is Enabled, the Digital Volume Offset, which may be set between 0.0 and 10.0, should be
set to the fader level that is considered maximum. For example, if the Digital Volume
Offset is set to 7.0, then the digital signal attenuates as expected when the master fader is
set below 7.0. The digital signal volume will not increase if the fader goes above the Digital
Volume Offset.
 Offset can be adjusted by touching it and using the adjustment knob. The volume level is in
effect only if the enable/disable box is enabled (blue). Digital volume should be enabled
only if the system is using the digital output on the AP20.
Note: Channels 1 through 16 on this screen refer to the input channels. In cases where
the input is routed to a different output channel, the control represents only the input
channel path. The same is true if the channel is routed to more than one output in a
crossover configuration. For example, if L (Ch1) is routed to output channels 1 (Left-
H) and 2 (Left-L), then if Ch1 is inverted the signal will be inverted on both output
channels 1 and 2.
 EQ – a button linking to the Third Octave EQ screen is provided on the menu bar.
 Param EQ – a button linking to the Parametric EQ screen is provided on the menu bar.