Marani LPP-480F User manual

User Manual
LPP-480F

USER MANUAL
Remote Control sw PC
LPP-480F
Hardware and Software requirement for installing
−O.S: XP (32-bit) and higher (also 64-bit O.S)
−RAM: min. 1GB
−ROM: min. 10MB
−NET Framework 4.0 (installed before to installing the LPP-480F setup)
−USB Driver: “STM32_VCP_Driver_V1.3.1.exe”
Preliminary
−The remote control sw Pc can connect with the device(s) via USB, RS485, TCP/IP so the user
must set the connection mode according with the device's setting.
−Each device can be connected by up to 4 connection (PC) at the same time. Is not possible to
connect the same device at the same time via RS485 and TCP/IP. Is possible to use at the same
time the USB and TCP/IP or USB and RS485 connection (from different PC).
−When two remote control sw PC are connected to the same device then each modification done
by one sw PC GUI, shall be reported also on the other one sw PC GUI automatically
−Each device have inside installed an “Announce” function in order to inform the sw PC when it
is
connected via TCP/IP. So at the first start-up of the sw PC connected via TCP/IP with the
device, the firewall of the O.S try to block the program (see the picture below)
Click the button “Unblock” if the User want that the sw Pc recognize automatically all devices
connected via LAN.
−the default IP address of the device is 192.168.0.100, so if the User want to connect it with the
sw PC via LAN is recommended to configure the PC with a static address on the range
192.168.0.x
−The parameters used on the device are divided in two group, system and program parameter.
System Parameter:
Device Name, Input Source Type, Auto switch source enable, Input/Output Link,
Input/Output Keep linked channels level offset, Noise Generator Enable/Type/Level, ADC
Headroom, Mode.
Admin/User Password, Admin Lock Mode, Lock GUI with and without password, Program
recall option.
This parameters are used to configure the device and not will be change when the User change a

program. Many of this parameters are set under the “Settings” page and “Routing” page.
Program Parameter:
are all parameter used to configure the signal process (filters, noise gate, gains, compressor,
limiter, delay,....) this parameters can be load/saved on PC and Recall/Store to Device.
−Project,
the sw PC start every time with last project configuration, on the project file there are the
information of each device (system parameter and current program parameter) added to a
“Device-List” (see later)
the User can Save the current project to PC or load a saved project from PC.
−The User can also work in off-line Mode and if he want,
he can upload the setting on the device when try to connect (on-Line status) the sw PC with the
device or he can download the setting from the device to the GUI when try to connect (on-Line
status) the sw PC with the device.

USER GUIDE
after run the remote control sw PC, the first window shown is the splash-screen
after some seconds this window will be closed automatically and start the “Main” window:
where is possible to see the “Device-List” window and the three icon to manage the project set by
User “New”, “Save” and “Load” project. To close the App the User must click on the red button
“X”
Each time that the User close the App, the system save automatically last configuration of the
project in order to recall it at the next start-up of the App.
Device-List window
on the Device-List window are shown all devices found automatically by sw PC (if the device are
connect via TCP/IP) and the devices added manually by the User.

If a device is connect via TCP/IP then the app can recognize automatically (if the permit on the
Firewall is enabled) the device and ask to the USER to connect it or not and insert in the List the
device found if it is not already inserted.
Add Device: with the button “Add Device” is possible to insert manually a device
The Connection Mode (Interface in the Device List) are USB, RS485, TCP/IP.
If the User select:
−USB Mode, only one device can be selected in USB mode. If on the Device-List is already
present a device set in USB mode then the system inform the User after pressed the button OK,
that is not possible to insert other device in USB Mode
−RS485 Mode, must set an ID and this must be the same used on the device that the user want to
connect. The ID range is from 1 to 32 (max 32 device can be added). If on the Device-List is
already present a device set in RS485 mode with same ID then the system inform the User after
pressed the button OK, that is not possible to insert other device with the same ID
−TCP/IP (LAN) Mode, must set an IP address and this must be the same used on the device that
the user want to connect. The IP range is from 1.0.0.1 to 223.255.255.254. If on the Device-List
is already present a device set in LAN mode with same IP then the system inform the User after
pressed the button OK, that is not possible to insert other device with the same IP

After pressed the button OK if there are not duplicate device the system insert the device selected
on the “Device-List”
the Unique ID field will be refilled when the sw is connected with the device (this info will be read
from the device)
The Unique ID is used by sw PC to identify the device on the network.
Remove Device: with the button “Remove Device” is possible to remove one or several device
from the Device-List.
if a device on the Device-List is On-line or in editing then it will be not shown on the Remove-List.
To remove a device the User must set the check-box present on the column REMOVE and the row
of the device that the User want remove.
When a device is removed from the User then the device will be not recognize automatically, he
must insert it again manually if wanted. If the sw Pc will be closed and re-open then the sw PC can
recognize the device removed.
After select the check-box press the button “Remove” to remove the device(s) in the “Device List”.
Search Device: with the button “Search Device” is possible to check if there are devices connect to
PC and still not inserted on the Device-List.
The User can select what to search on the network, the device connect in USB Mode, and or Device
connect in RS485 Mode and or Device connect in TCP/IP mode.
If the USB check-box is selected then the system search only one device connect in USB Mode.
The system check if there is a USB port connected to device (check all COM on the range from 1 to
64)
the system work with one COM for time, so if there is a device already On-line and connect via
USB or RS485 then the system can not found new device connect via USB
If the RS485 check-box is selected then the system search all device connect in RS485 mode with
ID from 1 to 32 (is important that each device connect on the network via RS485 have an ID
different from the other). The system work with one COM for time, so if there is a device already
On-line and connect via USB then the system can not found new device connect via RS485

If the TCP/IP check-box is selected then the system search all device connect via LAN mode with
IP on the range selected by User, the system can search devices from 1 to max 255 for time, in that
case the first 3 byte of the IP address of the “From” and “To” are the same.
If the Host Address is not found (PC have the LAN not available) then the sw PC show the IP
address :127.0.0.1 and in that case is not possible search device in TCP/IP mode.
After selected the search mode check-box press the button “Ok” and the system start to interrogate
the network and when finish show the new device found on the Device-List or show a pop-up
message with “No new device(s) found”.
Connect/Disconnect ALL: with the button “Connect/Disconnect All”
is possible to connect (set in On-line mode) all device present on the Device-List in Off-line Mode
is possible to disconnect (set in Off-line mode) all device present on the Device-List in On-line
Mode
Single Connection
if the device 's STATUS is On-line then if the User click on the colum “STATUS” of the device's
row then the device switch in Off-line mode after a confirmation, vice versa if the device is Off-
line then switch in On-line mode.
To switch from Off-line to On-line mode the system ask to User if:
a. the GUI (Graphic User Interface) must be update with the data present on the device or
b. the Device must be update with the data already edit on the GUI (data of the device selected and
already present on the project).
This window will be show also when the User use the button “Connect All”
After press the Button “OK” the system run the selected option set by User.
If the device selected is on the network then on the Device-List will be show the device status “On-
Line”.
EDIT DEVICE
The user can edit the configuration of the device in Off-line and On-line mode. If the Device is in
On-line mode then the changed parameters will be update on the device in real-time mode.
To Edit a device the user must a double-click with mouse in the device-List on the column IP (or
Interface, or Name or Unique ID) of the device's row.
After the double-click the system show the following Edit window

−on the Title-bar of the window are present the device IP address (if the device is connect via
TCP/IP) or device ID (if the device is connect via RS485), the device name and the current
program loaded.
−on the above tool-bar of the window there are:
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1. Load Program saved to PC
2. Save Program to PC
3. Store Program to Device
4. Recall Program from Device
5. Reload the current Program with the Factory parameter
6. Copy one input channel to another input channel
7. Copy one output channel to another output channel
8. Utility
9. Firmware Update via USB
10. Enter a password to log-in as Admin
11. Lock interface without password
12. Lock inteface using a User password (default = “111111”)
13. Pages selector, to select a page between Routing, Gains and Meter, input channel (A,...,H),
output channel(1,...,8)
14. Read the current version of the Fw
see later how working the button 1,..,14 present on this tool-bar

−on the below tool-bar of the window there are:
15 16 17
15. Status of the connection (off-line / On-line)
16. Link input channel (when the check-box is enabled on the channel of the control modified
then the value will be copied to the other channel with the link enabled)
17. Link output channel (same at the Link input channel)
see later how working the button 15,..,17 present on the tool-bar
−on the middle of the window there are the edit pages (depending from the button selected on the
“Page Selector”)

Routing Page:
on the routing page is possible select:
−Headroom: when the check-box is set, on the relative input will be add +12dB
−Input source: the User can change the input source in pairs,
a. source A/B can be set as ANALOG A/B or DIGIATAL A/B
b. source C/D can be set as ANALOG C/D or DIGIATAL C/D
c. source E/F can be set as DANTE A/B or the selection on the Source A/B
d. source G/H can be set as DANTE C/D or the selection on the Source C/D
On the utility menu “Src Settings” (open it using the button Utility) is possible to set the
automatic source priority “Autoswitch” on channel E/F and G/H.
When the “Enable Autoswitch on Channel E/F” is set then, independently of the set on the
Source E/F, if the signal is present on the DANTE input A/B, the source E/F will be set
automatically to DANTE A/B.
When the “Enable Autoswitch on Channel G/H” is set then, independently of the set on the
Source G/H, if the signal is present on the DANTE input C/D, the source G/H will be set
automatically to DANTE C/D
−Noise Generator: on this frame is possible to set the Noise generator type (White, Pink) and the
level of the noise. When the Noise Generator is enabled then in all input there is the Noise
signal independently of the set on the Source channel

−Input-Routing (IN-X --> CH.X)
−Ch Input to FIR - Routing (CH.X --> FIR-Y)
−FIR to Ch Output - Routing (FIR-Y --> CH.Y)
−Ch Output to Output - Routing (CH.Y --> OUT-Y)

−DANTE Output Routing
- the output DANTE-1can take the signal from the output of the FIR-1 or FIR-5 block, or from
OUT-1
or from OUT-5
- the output DANTE-2 can take the signal from the output of the FIR-2 or FIR-6 block, or from
OUT-2 or from OUT-6
- the output DANTE-3 can take the signal from the output of the FIR-3 or FIR-7 block, or from
OUT-3 or from OUT-7
- the output DANTE-4 can take the signal from the output of the FIR-4 or FIR-8 block, or from
OUT-4 or from OUT-8
−FIR BLOCK
the FIR-1,FIR-2,....FIR-8 can be configured under utility menu “FIR Config.” (open it using the
button Utility)
the System have split out the FIR block in two section FIR-1 to FIR-4 and FIR-5 to FIR-8 in order
to have more flexibility on the number of the Taps of the FIR.
With the configuration present on the 1st row, the system have 4 FIR with 1024 Taps.
With the configuration present on the 2nd row, the system have one FIR on channel 2 and one FIR
on channel 4 with 2048 Taps, the channel 1 and 3 have not FIR
With the configuration present on the 3rd row, the system have one FIR on channel 3 with 3072
Taps and one FIR on channel 4 with 1024 Taps, the channel 1 and 2 have not FIR
With the configuration present on the 4th row, the system have one FIR on channel 4 with 4096
Taps, the channel 1,2 and 3 have not FIR.
This is true also for the section FIR-5 to FIR-8
is a FIR Block is not “Bypassed” when the User, click with the mouse (left button) on the label “xx

Taps max” the system show a following pop-up menu
using this menu the User can:
1. use a Wizard in order to use a tool to create a FIR filter for the phase correction (the User
need an external Asio audio card to recorder the Output signal using a microphone. See the
appendix “Wizard” to understand how it is work)
2. Import an exernal FIR (see the appendix “Import FIR Filter”)
3. View the current FIR loaded on the device
4. Save the current FIR loaded on the device to a file txt
To see the name of the FIR loaded the User must put the cursor of the mouse over the button and in
this case the system show a pop-up with the name.

GAINS Page:
on the gains page is possible change the value of the input and output Gain (from -18dB to +12dB),
set the Polarity, the Mute and see the input (before Gain) and output (after Limiter) Meter.
When the Mute button is red then the relative channel is in muted.
When the Polarity check-box is set then the polarity of the relative channel is inverted of 180°
On this page, when more then one link on input and/or on output are set,
then the User can also enable the option “Keep linked channels level offset”
this mean that when move a gain on a channel linked the other channel linked change the value with
the same quantity but maintaining the offset.
Examples:
−Input Link A and B are set.
−Keep linked channels level offset (on input section) is enabled
−Level of the CH.A is 0dB and the Level of the CH.B is +3dB
if the User set the Level on CH.A to +5dB then the Level of the CH.B change to +8dB
on this example the max level of the CH.A is +9dB because when the CH.A is +9dB the Level
of the CH.B is +12dB (Max Level) and to maintain the offset of 3dB the CH.A max value will
be fixed to +9dB.

INPUT A,B,...,H Page:
on each input channel is possible change the:
−Gain
−Mute
−Polarity
−Delay
−Noise Gate
−RMS Compressor
−13 PEQ Filter
−Graphic filter (Magnitude or Phase)
−Meter of the Channel and the Compressor activity (Gain reduction)
On all control where is a text-box , the User can change the value of the control in the
following mode:
−select the text-box
−input the value using the keyboard
−press Enter to validate the new value
On all control where is a Fader, the User can change the value of the control in the following mode:
select the fader with mouse (when the fader is selected the color change => )
a1. press and hold the button left of the mouse and drag it to change the value
a2. after selected use the key “up”/”down” of the keyboard to increase/decrease the value
with a double click (button left) of the mouse the value will be changed to 0dB (this is true only for
the gains/eqs fader control)
On all control where is a Chech-Box, when it is set then the parameter is actived.
Examples in the picture the bypass is enabled
Parametric Filter EQ

−when the equalizier is bypassed the user can working on the single filter but the graphic of the
filter is shown as flat
−when the User press on the button “Flat”, all filter will be set to 0dB (but if the filter type of the
filter is Low Pass, High Pass, Notch, All Pass, then the single filter will be bypassed)
−to change the value of the Q, use the button Left/Right below the text-box or input the value on
the text box and press “Enter”. The Q value is depends from the filter Type.
−to change the value of the Frequency, input the value on the text box and press “Enter”. The
value must be in Hz without “,” or “.”
−to change the value of the Gain, the User must after select the fader with mouse (when the
fader is selected the color change => ) press and hold the button left of the mouse
and drag it to up or down or after selected use the key “up”/”down” of the keyboard to
increase/decrease the value or
input the value on text-box above the fader and press enter. (the range is from -15dB to +15dB
step 0.5dB)
−with a double click (button left) of the mouse on the fader the value of the gain will be changed
to 0dB
−to change the filter Type, the User must click with the mouse (left button) on the filter type
button.
After press, the system show a pop-up menu with a list of the filter type.
If the Type is Hi-Shelving/Lo-Shelving 1st, 2nd then the Q is fixed so the control is disabled
If the Type is High/Low Pass, Notch filter then the Gain is fixed so the control is disabled
If the Type is All Pass 1st then the Gain,Q are fixed so the controls are disabled
If the Type is All Pass 2st then the Gain is fixed so the control is disabled
If the Type is Custom (IIR Filter imported by User) the system loads the last external IIR filter
stored on the device and shows a frame with an “Edit” button (see the picture above). To
working with Custom filter, please see the appendix “Custom IIR Filter”

Graphic's Parameter
−Cursor Button
The button “Cursor” (toggle button) is used to draw the filter on the graphic using the mouse.
After pressed, the button change state (the color of the label change from Gray-Orange and vice
versa) when active (orange) the system show on the graphic some label (if the Equalizer is not
in bypass) with the number of the filter (for input channel from 1 to 13, for output channel from
1 to
7)
The User can press and hold the left button of the mouse over the orange label and drag the it to
modify the frequency and the Gain of the Filter selected (dipending of the filter Type, i.e for HP
filter is not possible change the gain) after release the button then the filter will be loaded on the
device if it is connected. To change the Q of the filter the User must use the control as described
above (using the text-box or the button left/right).
−Option Mag/Phase
Use the options “Mag” or “Phase” to see on the graphic the Magnitude or the Phase of the filters
−Shift and Zoom control
the Shift control is used to shift the axis Y (dB) up or down,
the Zoom control is used to increase or decrease the resolution on the axis Y (dB)
with Zoom = x1 then the step from a label to another is 5dB
with Zoom = x4 then the step from a label to another is 20dB
x1

x4
−View Button
when the user press the button, the system open a new window where is possible only view all
plot of all input and output channel on the graphic
Input channel, when the relative check-box is enabled then the User can see on the graphic the plot
of the input channel enabled
Output channel, when the relative check-box is enabled then the User can see on the graphic the
plot of the output channel enabled.
The User can see
1. the plot of the only Output.Y (i.e CH.1)
2. the plot of the Output.Y + FIR-Y (i.e CH.2)
3. the plot of the Output.Y + Input CH.X (i.e CH.3)
4. the plot of the Output.Y + Input CH.X + FIR-Y

Noise Gate
In the Noise Gate control is possible edit the Bypass, Threshold, Release-Time, Attack-Time.
To change the value use the same management used for EQ
RMS Compressor
In the RMS Compressor control is possible edit the Bypass, Threshold, Ratio, Knee, Release-Time,
Attack-Time, Make-up (same on the output channel). To change the value use the same
management used for EQ
DELAY
on the Delay control is possible select the unit of the delay (time [ms], distance [m]), change the
value using the text-box or the buttons left/right below the text-box
Vu-Meter Channel
the user can select what see on the Meter: BG=Before Gain, AG=After Gain, AC=After
Compressor
(on output page there are: AG=AfterGain, BL=Before Limiter, AL=After Limiter)

Compressor Activity
on this Meter the User can see the Gain Reduction when the compressor is active
MUTE/POLARITY/GAIN
they are the same control present on the GAINS page