Itel MPX-S User manual

User's manual
MPX-S Multimode network splitter
© 2017ITELSNC
Author
Version
Copyright 3.1.0 - 21/03/2017
A.Tomassini

MPX-S Multimode network splitter2
© 2017 ITEL SNC
Table of contents
Section 1 Introduction 4
................................................................................................................................... 41 List of changes
................................................................................................................................... 52 Warnings
................................................................................................................................... 63 Front panel
................................................................................................................................... 64 Rear panel
................................................................................................................................... 75 EXT CNT connector
................................................................................................................................... 86 Editing and navigation
Section 2 Front panel display 11
................................................................................................................................... 111 Splitter status
......................................................................................................................................................... 11Input level
......................................................................................................................................................... 11Level monitor
................................................................................................................................... 112 RDS and MPX Audio monitor
......................................................................................................................................................... 12Mpx source selection and stereo levels
......................................................................................................................................................... 12RDS flags ......................................................................................................................................................... 12Radiotext ......................................................................................................................................................... 12RDS blocks percentage monitor
......................................................................................................................................................... 13AF tables ......................................................................................................................................................... 13RDS Stream monitor
......................................................................................................................................................... 13Subcarrier monitor and deemphasis selection
................................................................................................................................... 133 Alarms
................................................................................................................................... 144 System setup
......................................................................................................................................................... 14Display and Mpx inputs
......................................................................................................................................................... 14Interfaces and input modules
......................................................................................................................................................... 15Parallel status
......................................................................................................................................................... 15Network setup
......................................................................................................................................................... 15System info
......................................................................................................................................................... 15System manteinance
................................................................................................................................... 165 HeadphonesLevel

Section 1
Introduction

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1 Introduction
SPLIT MKII is an audio switcher for splitting advertising or regular programming over different areas. It
is realized with fully solid state switches in order to maximize reliability. It can handle, using two 8-
channels boards, up to 16 different zones and allows two network inputs.
Each output is monitored and can be programmed for auto-return to network programming, if a
prolonged mute condition is detected on its input.
An internal DSP based high quality stereo decoder and subcarrier monitor with integrated RDS
decoder, allows a quick and easy measurement of the main MPX parameters and RDS data on any
network input and output.
As optionals, are available the redundant power supply and the mechanical bypass which switches
all outputs to the network input 1, in case of power outage or internal malfunction.
1.1 List of changes
1.1.0 11/2/2015 first edition
1.2.0 18/12/2016 added MPXmonitor description

5Introduction
© 2017 ITEL SNC
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.

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1.3 Front panel
Front panel leds
SPLIT: lit when network splitting is taking place.
ALRM: alarm condition detected.
COM : data communication active
RUN: system heartbeat.
Menu navigation and parameters editing is done through the front panel knob.
he headphones output allows to listen to each output; the output selection is made through the
"MpxAudio Monitor" menu.
1.4 Rear panel
MPX module 2 (optional) Mpx Module 1
Rear panel connector
MPXmodules 1/2
NET IN 1 Main network mpx input
NET IN 2 Backup network mpx input
IN 1 Mpx input area 1
IN 2 Mpx input area 2
IN 3 Mpx input area 3
IN 4 Mpx input area 4
IN 5 Mpx input area 5
IN 6 Mpx input area 6
IN 7 Mpx input area 7
IN 8 Mpx input area 8
OUT 1 Mpx output area 1
OUT 2 Mpx output area 2
OUT 3 Mpx output area 3
OUT 4 Mpx output area 4
OUT 5 Mpx output area 5
OUT 6 Mpx output area 6
OUT 7 Mpx output area 7
OUT 8 Mpx output area 8
CONTROL PORTS
EXT CNT (DB25 F) parallel inputs (view pinout)
RS232 (DSUB 9F) RS232
LAN (RJ45) Ethernet connection

7Introduction
© 2017 ITEL SNC
1.5 EXT CNT connector
The EXT CNT connector is intended for parallel inputs control.
Switching inputs are designed to be coupled to open-collector outputs: no voltage is allowed to enter
into the inputs.
The Mpx output switching, from network to local mpx, is done when the "Par" control is selected
under System menu > Split Control and when its corresponding switching control input is driven to
ground.
Yellow pins are the switching controls for module 1, red pins are for module 2.

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1.6 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.

9Introduction
© 2017 ITEL 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

11Front panel display
© 2017 ITEL SNC
2 Front panel display
Following are listed all menus and functionalities available on the current firmware release.
2.1 Splitter status
Split status monitoring.
2.1.1 Input level
In this window is shown the network input (1-2) level and the output level and status.
Output is connected to network input.
Output is connected to its local splitting input
Output was switched back to main network input, because of muting condition detected.
2.1.2 Level monitor
Fine MPXinput level monitor for network inputs and splitting outputs,
2.2 RDS and MPX Audio monitor
MPXstereo and RDS decoder monitor menu.

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2.2.1 Mpx source selection and stereo levels
MPXinput selection and decoded audio level display.
2.2.2 RDS flags
On this page are displayed the main RDS parameters:
PS :Program service name
PI :Program identification
PTY :Program type
TP :Traffic program
TA :Traffic announcement on air.
M/S :Music / Speech switch
2.2.3 Radiotext
This window shows the current radiotext string
2.2.4 RDS blocks percentage monitor
This page shows the percentage of the various blocks detected.
The block shown can be changed using the front panel knob.

13Front panel display
© 2017 ITEL SNC
2.2.5 AF tables
The AF tables being transmitted, are collected and displayed into this window.
User can select the AF table number, in case that more than one table is transmitted.
2.2.6 RDS Stream monitor
In this window, the complete RDS stream decoded is displayed.
The user can choose, using the front panel knob, to filter for one particular RDS block or to pause
the scrolling.
2.2.7 Subcarrier monitor and deemphasis selection
Deemphasis 75/50uS/OFF, deemphasis setup for the stereo decoder.
Pilot level pilot level indication.
The stereo decoder is active when this value is above 4KHz.
Pilot fq.Err Frequency error on pilot tone.
Rds level RDS subcarrier level
2.3 Alarms
If one or more alarms are active, the front panel led is lit and, into this page, the alarm
description is displayed.

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Using the "RESET" function, it is possible to clear the stored alarms, if they are not longer active.
2.4 System setup
2.4.1 Display and Mpx inputs
Contrast display contrast setup
MpxInput main network input selection.
MpxAutoSw Min Lev dB: enable/disable channel auto-return if muted input is detected.
Alarm Timeout S: muted channel auto-return timeout (seconds).
2.4.2 Interfaces and input modules
Split Blocks number of boards installed
Comm Autoreturn S automatically ends the splitting condition if no activity is detected on
communication ports.
Mute Autoreturn dB audio level alarm threshold
Split Control splitting control source

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© 2017 ITEL SNC
2.4.3 Parallel status
On this page is shown the parallel port input status for the parallel 1 (related to board 1, yellow input
pins) or parallel 2 (related to board 2, red input pins).
input is in open.
input is in closed to ground.
2.4.4 Network setup
IP own ip address
GWY gateway address
Port UDP communcation port setup.
NetMask netmask in CIDR notation.
APPLY apply current setup and restart network.
2.4.5 System info
Sys: operating firmware revision
Hw: hardware revision
BL: bootloader revision
SN: serial number.
2.4.6 System manteinance
From this menu is possible to reboot the equipment.

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2.5 Headphones Level
The headphone level can be adjusted using the front panel knob.
Pressing the knob for more than 1 second, will show the adjustment level menù.
After 3 seconds the level menù will close automatically.