13
Operating Manual - Pema Protea Equipped Media Amplifier
Attenuators
- These two dials indicate the physi-
cal position of hardware level controls on either the amp
front panel or the remote DC level control (if present).
Note that these will display the position of attenuators
even when disabled in software.
Total Attenuation
- This indicates the total amount
of attenuation being applied to the channel in dB. This is
the sum of the following attenuators: main fader, offset
link group attenuation, front panel and remote attenua-
tors (if enabled).
Note: The
maximum dynamic range
of the ampli-
fier is only achieved when the amplifier’s attenuators
are set to the optimal value. The amplifier’s cumulative
attenuators (as listed in the above paragraph) are located
in the signal path after all DSP processing but before the
power amplifier section. The optimal setting is deter-
mined by the maximum input signal of +20 dBu (with the
attenuators set far down), minus the input sensitivity of
+6.2 dBu (with the attenuators set at 0 dB). This equates
to approximately 14 dB of attenuation. The amplifier’s
specified dynamic range is measured with the attenuators
set to this optimal setting of 14 dB
3.4b Security Tab
Password protected user access is set up in the
security tab. User names and password are stored
within the Pema amplifier. User access is defined
by the primary user (admin or default). Available
security levels are: View only, DSP Output Channels
Access, DSP Input Channels Access, Preset Recall
Access, Audio Parameter Access, Audio Only Ac-
cess, IP only Access, and Full Access.
3.4c Network Properties Tab
In this tab, device information includes device
type, MAC address, and network connect status.
Device network configuration can be set to auto-
matic DHCP (recommended) or Manual Static IP.
Advanced Network Configuration allows the user to
bypass corporate firewalls and assign a specific port
to PEMA for remote setup and monitoring.
The user can visually identify the amplifier on
a network by clicking the "Identify Device" button,
which lights the COM LED on the amplifier's front
panel for two seconds. The amplifier's firmware
revision is shown in the hardware configuration
section as well. From time to time Ashly may post
updated firmware on our website which can be
downloaded and then flash reprogrammed to the
amplifier. Flash reprogram is found in the device
options menu when connected to a live Pema device.
Pema Security
Pema Network Properties
