Itel DPRO3 User manual

User's manual
DPRO3 FM
© 2016ITELElettronicae Telecominicazioni Snc
Author
Version
Copyright 1.2.0 - 20/09/2016
A.Tomassini

DPRO3 FM Audio Processor2
© 2016 ITEL Elettronica e Telecominicazioni Snc
Table of contents
Section 1 Description 5
................................................................................................................................... 51 List of changes
................................................................................................................................... 52 Warnings
................................................................................................................................... 63 Front panel
................................................................................................................................... 64 Rear panel
................................................................................................................................... 75 Editing and navigation
Section 2 Front panel display 10
................................................................................................................................... 101 Audio processor
......................................................................................................................................................... 10Compression levels
......................................................................................................................................................... 10AGC ......................................................................................................................................................... 11Loading a preset
......................................................................................................................................................... 11Saving a preset
......................................................................................................................................................... 12Gate level and compressor drive
.................................................................................................................................................. 12Bypass
......................................................................................................................................................... 12Compression level and master release time
......................................................................................................................................................... 13Band link and equalization
......................................................................................................................................................... 13Bass parametric eq
......................................................................................................................................................... 13Bass clipper/limiter
......................................................................................................................................................... 14Stereo expander
................................................................................................................................... 152 RDS Coder
......................................................................................................................................................... 15RDS level and flags
......................................................................................................................................................... 15PI,PTY ......................................................................................................................................................... 15PS and Radiotext monitor
......................................................................................................................................................... 16PS Editor ......................................................................................................................................................... 16RT Editor ......................................................................................................................................................... 17AF list Editor
................................................................................................................................... 183 Audio input setup
......................................................................................................................................................... 18Audio levels monitor and input level setting
......................................................................................................................................................... 18Audio source setup
......................................................................................................................................................... 19Audio processor preset selection
......................................................................................................................................................... 19Audio fallback setup (audio backup)
................................................................................................................................... 204 Audio output setup
......................................................................................................................................................... 20Audio output regulation
................................................................................................................................... 205 MPX output setup
......................................................................................................................................................... 20MPX modulation and pilot subcarrier setup
......................................................................................................................................................... 21Output level setup
................................................................................................................................... 226 System setup
......................................................................................................................................................... 22Display,Source Dependent Presets, device ID
......................................................................................................................................................... 22PassCode Setup
......................................................................................................................................................... 22Ethernet setup
......................................................................................................................................................... 23System info
......................................................................................................................................................... 23Options

3
© 2016 ITEL Elettronica e Telecominicazioni Snc
......................................................................................................................................................... 23Login window
................................................................................................................................... 247 HeadphonesLevel
Section 3 Programmming software 26
................................................................................................................................... 261 Main window
................................................................................................................................... 272 Audio/System
......................................................................................................................................................... 27Presets ......................................................................................................................................................... 29Audio input-output
......................................................................................................................................................... 30System setup
......................................................................................................................................................... 31Loading and saving a preset
......................................................................................................................................................... 32Loading and saving system
................................................................................................................................... 333 RDS
......................................................................................................................................................... 33RDS Flags window
......................................................................................................................................................... 35PS window
......................................................................................................................................................... 36Radiotext window
......................................................................................................................................................... 37AF Lists window
.................................................................................................................................................. 38Editing .................................................................................................................................................. 39A Method .................................................................................................................................................. 39B Method
......................................................................................................................................................... 41Loading and saving RDS coder configuration
................................................................................................................................... 424 Passcode setup
Section 4 RD Link 44
................................................................................................................................... 441 Radiotext Plus
................................................................................................................................... 462 Monitor
................................................................................................................................... 483 Configuration
......................................................................................................................................................... 48Setup .................................................................................................................................................. 48ProgramID
.................................................................................................................................................. 48Radiotext Plus and dynamic PSN
.................................................................................................................................................. 49TA - Clock time
.................................................................................................................................................. 50Communication interface and additional settings
......................................................................................................................................................... 51Raw Text Importer
......................................................................................................................................................... 52Word filter
................................................................................................................................... 534 Scheduler
Section 5 Streaming audio module 58
................................................................................................................................... 581 Quick setup

Section 1
Description

5Description
© 2016 ITEL Elettronica e Telecominicazioni Snc
1 Description
This product is a fully digital audio processor with integrated MPXstereo encoder and RDS (option).
The audio processor is implemented through a traditional three band limiter.
This configuration, although simple, allows for a natural, well balanced sound, yet having a good
onair presence.
Audio processing, MPX coding and RDS signal are all realized using DSPs, allowing for stable
performance over time and extending functionality with firmware upgrades.
1.1 List of changes
1.1.0 17/06/2014 first release
2.0.0 23/09/2014 updated to new firmware 2.0 features
2.0.1 20/11/2014 updated to new firmware 2.1 features
3.0.0 10/03/2015 updated to new firmware 3.0 features
3.1.0 25/01/2016 updated to new firmware 3.1 features
3.2.0 14/09/2016 updated to new firmware 3.2 features
1.2 Warnings
Before attempting any operation, please follow the safety instructions contained in the
following paragraph.
The producer declines any liability for damage to people or things due to non-compliance,
even if partial, of the following indications
• Ensure that the supply voltage corresponds to what is indicated on the apparatus.
• Ensure that the electrical system is equipped with a ground connection.
• Use only power sockets and cables with ground connection
• Disconnect power before attempting any operation inside the device.
• The power cutting device is the power cord, so this should be easily accessible and the socket
must be positioned close to the apparatus.
• Any operation involving the access to internal parts must be performed only by trained service
personnel.

6 DPRO3 FM Audio Processor
© 2016 ITEL Elettronica e Telecominicazioni Snc
1.3 Front panel
Front panel indicators and rotary knob
Headphone stereo jack 6,3mm (1/4")
• GATE: led is on when level is below gate threshold
• CLIP: the analog input level is too high.
• DIG IN: AES/EBU digital input is selected as audio source
• NET: Network audio is selected as audio source(option).
• AGC: input AGC gain level
• MULTIBAND LIMITER:multiband limiter compression level
Menus navigation and parameter editing is done through the rotary knob.
1.4 Rear panel
Connectors on rear panel
DIG OUT (XLR M) AES/EBU output
DIG IN (XLR F) AES/EBU input
LEFT IN (XLR F) left analog input
RIGHT IN (XLR F) right analog input
19K OUT (BNC F) 19KHz output for external RDS encoder synchronization. (1Vpp
trapezoidal wave)
MPXOUT (BNC F) composite MPXoutput (+6/-6dBm)
SCA IN (BNC F) external SCA / RDS input (will be mixed to MPXoutput with a gain
of -20dB)
LEFT OUT (XLR M) left channel analog output
RIGHT OUT (XLR M) right channel analog output
RS232 (DSUB 9F) RS232 connector
USB DRIVE (USB-A) USB connector for fallback audio on external drive (option)
LAN (RJ45) LAN connector (option)

7Description
© 2016 ITEL Elettronica e Telecominicazioni Snc
1.5 Editing and navigation
Menu navigation and parameters editing is done by the front panel knob.
On the main menu which appears after firmware boot, is possible to select the submenu for the
various settings.
Pressing the knob, will enter the selected submenu.
Once entered in the desired sub-menu, if there are adjustable parameters, you can proceed to
editing
Pressing the knob, an asterisk "*" will appear next to the first editable element. This will not happen
if, on the current window, there are no editable parameters.
Turn the knob to position the "*" cursor on the other editable elements of the current window.
If you want now to change the analog input sensitivity, press the knob again. A "<" symbol will
appear next to the parameter to indicate that this is being edited.

8 DPRO3 FM Audio Processor
© 2016 ITEL Elettronica e Telecominicazioni Snc
Turning the knob, you now will modify the selected parameter's value.
Once set the desired value, press the knob again. The cursor will switch to "*" again, indicating that
items navigation mode is now active and other items can be selected and edited as described
before.
If editing is however terminated, press the knob again and the "*" cursor will disappear and you can
rotate the knob to navigate to other windows.
Inside any submenu, pressing the knob for more than 3 seconds, will cause a jump to the main
menu.
When pressing the knob for 1 seconds, will appear the Headphone Level regulation.

Section 2
Front panel display

10 DPRO3 FM Audio Processor
© 2016 ITEL Elettronica e Telecominicazioni Snc
2 Front panel display
Following are listed all menus and functionalities available on the current firmware release.
2.1 Audio processor
Into this section are comprised all functions and menus related to the audio processor.
2.1.1 Compression levels
In the window, the compression-limiting levels of the three bands are shown.
The "GTD" label, if visible, indicates that the audio level is below the gate threshold.
2.1.2 AGC
This window contains the settings for automatic gain control (AGC) block, placed at the head of
audio processing chain.
The automatic gain control performs a pre-leveling of the signal applied to the following compressors/
limiters, keeping their working point almost constant.
At the right side of the bar which indicates the level of pre-amplification applied to the input signal, is
placed the AGC status indicator: if "AGC" is displayed, the input level is above the gate threshold
and the AGC and compressors/limiters are operating correctly, if "GTD" is displayed it means that
the input signal is below the minimum level so the compressors release is slowed down and the
AGC slowly decrease its gain down to 0dB.
AGC Status (On / Off): Enables / disables the AGC operation.
Agc Rel.Speed (0..10): AGC release speed. By increasing this value, you will get a faster recover
when audio input gets quieter.