Datasat AP25 Installation And Operating Manual page 94

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 AP25.
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.
AP25 Installation & Operating Guide
AP25 Installation and Operating Guide
Document # 9301H79500 Ver. 1.00
Page 94