Itel STL-SAT Changeover User manual

User's manual
STL-SAT Changeover
© 2018ITELSNC
Author
Version
Copyright 3.0.0 - 19/03/2018
A.Tomassini

3
© 2018 ITEL SNC
Table of contents
Section 1 Introduction 6
................................................................................................................................... 61 Review
......................................................................................................................................................... 6Patent
................................................................................................................................... 72 Warnings
................................................................................................................................... 83 Front Panel
................................................................................................................................... 84 Rear Panel
................................................................................................................................... 95 Connectors
......................................................................................................................................................... 9Audio ......................................................................................................................................................... 10RS 232 ......................................................................................................................................................... 11GPIO Board
................................................................................................................................... 136 LCD Menu
................................................................................................................................... 147 Password
Section 2 Display Function 16
................................................................................................................................... 161 Station ID
................................................................................................................................... 162 Mpx Encoder
......................................................................................................................................................... 16Audio Levels
......................................................................................................................................................... 17Pre Enphasis, Audio Level and Clipper
......................................................................................................................................................... 17Pilot Level And Phase
................................................................................................................................... 173 RdsEncoder
......................................................................................................................................................... 17PS,PI, PTY Indications
......................................................................................................................................................... 18Radiotext Indications
................................................................................................................................... 184 Changeover
......................................................................................................................................................... 18Set Up main channel and back up
......................................................................................................................................................... 19Changeover Setting Mode
......................................................................................................................................................... 19Changeover Time Set
......................................................................................................................................................... 20RDS Substitution(override) and Tunnel RDS-MPX
......................................................................................................................................................... 20Dropouts Reconize
......................................................................................................................................................... 20PI Code Control
......................................................................................................................................................... 21SNR on MPX
......................................................................................................................................................... 21Threshold Levels
......................................................................................................................................................... 22MPX parameters Reading
......................................................................................................................................................... 22RDS Data Buffer
................................................................................................................................... 225 System
......................................................................................................................................................... 22GPIO Port Control
......................................................................................................................................................... 23Reading Parameters
......................................................................................................................................................... 23Modem Status and SMS alarms Activation
......................................................................................................................................................... 24IP Settings
......................................................................................................................................................... 24Functioning, Alarms and Warninngs
......................................................................................................................................................... 25Software Version
......................................................................................................................................................... 25Blocco password
.................................................................................................................................................. 26Cambio password, blocco sistema
.................................................................................................................................................. 26Recupero password

STL-SAT Changeover4
© 2018 ITEL SNC
Section 3 Control Software 28
................................................................................................................................... 281 Main Window
......................................................................................................................................................... 29passcode .................................................................................................................................................. 29Passcode on XVRfile
................................................................................................................................... 312 RDS,Changeover and SMS Settings
......................................................................................................................................................... 31Station ID......................................................................................................................................................... 32RDS PI,DI,PTY,TA,TP
......................................................................................................................................................... 34Coder Stereo Settings
......................................................................................................................................................... 34Channels and Threshold Settings
.................................................................................................................................................. 34Alarms Settings
.................................................................................................................................................. 35Audio Levels
.................................................................................................................................................. 36PICode .................................................................................................................................................. 36RDS Data Quality
.................................................................................................................................................. 36Pilot Level.................................................................................................................................................. 36SAT Dropouts reconizer
.................................................................................................................................................. 37SNRon MPX
......................................................................................................................................................... 37SMS - GPIO Settings
................................................................................................................................... 383 Radiotext Settings
................................................................................................................................... 394 PS Settings
................................................................................................................................... 415 Alternative frequencies
......................................................................................................................................................... 42A Method......................................................................................................................................................... 43BMethod
................................................................................................................................... 456 Firmware Update
................................................................................................................................... 477 Terminal
................................................................................................................................... 488 Levels Monitor
Section 4 GSM - SMS Functions 50
................................................................................................................................... 501 Commands
......................................................................................................................................................... 51ADD ......................................................................................................................................................... 51AUTO ......................................................................................................................................................... 53BYPASS ......................................................................................................................................................... 53DEL ......................................................................................................................................................... 53HELP ......................................................................................................................................................... 54MAN ......................................................................................................................................................... 54MUTE ......................................................................................................................................................... 54NOQUIET ......................................................................................................................................................... 54NUMBERS ......................................................................................................................................................... 55QUIET ......................................................................................................................................................... 55RESET ......................................................................................................................................................... 55SETGRANT
......................................................................................................................................................... 55SMS ......................................................................................................................................................... 55STS/INFO ......................................................................................................................................................... 57SWAP

Section 1
Introduction

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1 Introduction
The equipment realizes a partial or complete re-coding system of the RDS signal already contained in the
incoming signal and automatic MPX exchange between the MPX source and another stereo audio source
such as a satellite decoder.
The RDS signal in the MPX can be switched directly to the output or suppressed and replaced completely
or partially.
Internal RDS coder settings, such as PSN, RadioText, PI, PTY, DI strings, will be transmitted in cases where
the unit must be fully replaced by the RDS signal, or if the stereo audio source is aired .
In partial re-coding, only alternative frequency tables are replaced, while the rest of the information will
remain the same as the original RDS signal.
Optional GSM modem add-on modules or ethernet connection interface allow remote control of the
device.
1.1 Review
1.1.0 18/1/2014 First Edition for firmware 2.0.0.0
2.0.0 16/6/2014 New functions for firmware 2.1.0.0: tunnel RDS-MPX, BYPASS function on GPIO e
SMS. Proper Pin Out GPIO
2.0.1 2/7/2014 New functions for firmware 2.1.0.1: dropouts reconize
3.0.0 10/04/2017 New LCD Menu, New SW functions, NSR Measures on MPXe reconize software
dropouts (glitch) on satellite
1.1.1 Patent
Italy Patent n° 1.427.697
New Patent Pending

7Introduction
© 2018 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 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 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 indicators
• MAIN Main audio is on output
• BACKUP Reserve audio is on output
• ALARM Fixed: One or many alarms are active
Blink: No alarms, Warnings active
• RUN Blink, Equipment OK.
Front Panel Push Buttons
• < left/increment
• ENT edit/enter
• > right/decrement
1.4 Rear Panel
Connectors and Regulations on Rear Panel
•LEFT INPUT (XLR-F) Audio Analog Left Input from SAT Receiver
RIGHT INPUT (XLR-F) Audio Analog Right Input from SAT Receiver
TRIM LEFT/RIGHT Fine tuning L/R Level (+/-0.5dB)
•MPX IN 0dBm (BNC-F) Input MPX STL. Nominal Level Accepted 0dBm
•(2.2Vpp, 775mV RMS)
•RDS INJ RDS Level for OUT 1..3
•TRIM IN MPX Input Fine tuning (not present in all models)
TRIM OUT MPX Out fine tuning +1dB..-3dB
PC RS232 (DB9-F) Com Port RS232
•GPIO Control Connector GPIO.
•OUT1..3 Independent audio out. Note: OUT 3 che be configured for be the copy of
MPX In (Un buffered) .
•DC24V IN Battery Supply Input 24V (min 18V, max 32V)
•DC FUSE 630mAT Fuse for battery supply
Other connectors are present (LAN, MODEM VDE), GROUND). AC SUPPLY 100..230V AC 50/60 HZ

9Introduction
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1.5 Connectors
1.5.1 Audio
Front view XLR female
connector
PIN#
DESCRIPTION
NOTE
1
GROUND
Ground
2
+
Positive
3
-
Negative

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1.5.2 RS 232
Front view of RS232 DB9 female
connector
PIN#
DESCRIPTION
NOTE
1
APP LINK
+9V
2
TXD
Data Transmission
3
RXD
Data Reception
4
PC CONN
External PC Input connection
5
GND
Ground
6
NC
7
TALKER SEL
Talker devices selection (CPU o MODEM)
8
NC
9
NC

11Introduction
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1.5.3 GPIO Board
Front view GPIO female connector
Equivalent input circuit
Equivalent output circuit
PIN #
DESCRIPTION
NOTE
1
TLS RESERVE
STATUS +
RELAYS CLOSED WITH PIN#2 IF RESERVE CH IS OK
2
TLS RESERVE STATUS
-
RELAYS CLOSED WITH PIN#1 IF RESERVE CH IS OK
3
TLS ALARMS +
RELAYS CLOSED WITH PIN#4 NO ALARMS
4
TLS ALARMS -
RELAYS CLOSED WITH PIN#3 NO ALARMS
5
+5V OUT
5V OUT 220 OHM SERIES RESISTOR
6
+5V OUT
5V OUT 220 OHM SERIES RESISTOR
7
TLC ON +
ANODE OPTOELECTRONIC DIODE WITH 220 OHM SERIES
RESISTOR
8
TLC ON -
CATHODE OPTOELECTRONIC
9
TLC OFF +
ANODE OPTOELECTRONIC DIODE WITH 220 OHM SERIES
RESISTOR
10
TLC OFF -
CATHODE OPTOELECTRONIC
11
NC
12
TLC DROPOUT +
ANODE OPTOELECTRONIC DIODE WITH 220 OHM SERIES
RESISTOR
13
TLC DROPOUT -
CATHODE OPTOELECTRONIC

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14
TLS MAIN ONAIR +
RELAYS CLOSED WITH PIN#15 IF MAIN CH IS ON OUT
15
TLS MAIN ONAIR -
RELAYS CLOSED WITH PIN#14 IF MAIN CH IS ON OUT
16
NC
17
NC
18
+5V OUT
5V OUT 220 OHM SERIES RESISTOR
19
+5V OUT
5V OUT 220 OHM SERIES RESISTOR
20
GND (CHASSIS)
21
GND (CHASSIS)
22
GND (CHASSIS)
23
GND (CHASSIS)
24
TLC BYPASS -
BYPASS APPARATUS.CATHODE OPTOELECTRONIC
25
TLC BYPASS +
ANODE OPTOELECTRONIC DIODE WITH 220 OHM SERIES
RESISTOR

13Introduction
© 2018 ITEL SNC
1.6 LCD Menu
The various menus can be accessed via the "left / increment" and "right / decrement" buttons on the front
panel, to edit editable parameters, once you enter the desired window, press the "Edit / Enter"
Pressing the edit / enter key will display a "*" next to the first editable item. The indicator does not appear
if there are no editable items in the window.
By pressing the "left / increment" or "right / decrement" buttons, you can position (with the "*") on the
other editable items in the selected window.
If you want to change the status of the pre-enphasis, for example, press the "Edit / Enter" button again.
The "*" symbol replaces a "<" symbol, which indicates that the parameter is now being edited.
Now pressing the "Right / Increment" and "Left / Decrement" keys, you can change the value of the selected
parameter.
Once the desired value has been set, press the "Edit / Enter" key again. The symbol will return "*" to
indicate that you have returned to navigation mode. You can then go to modify other parameters within
the same window.
If the editing operations are finished, the "Edit / Enter" button once again is displayed. The "*" symbol will
disappear and you will be able to navigate through the other windows using the "Left / Increment" and
"Right / Decrement" keys

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1.7 Password
Parameter editing is password protected, therefore, at the first attempt to modify any of the parameters,
the access code request window will be displayed
Default Code is "0000".
Once the access code has been entered, place on the "ENTER" element, which will start blinking, and press
the ENT key on the front panel.
At this point you will be redirected to the window within which you were doing the editing operation.
The unit will automatically return to lock status after 2 hours from the last push of a button or
immediately with the "LOCK" function.

Section 2
Display Function

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2 Display Function
The menus available in the current software version are:
- Mpx Encoder
- Rds Encoder
- Changeover
- System
Once you have selected the menu to access the submenus where you want to edit the parameters, just
press the edit / enter key
2.1 Station ID
On the main page along with the name of the various menus to the left of the "<" symbol, a user-definable
label is shown on the bottom line to identify the repeater to which the device is assigned.
The text shown will not be sent to any RDS block, since it is only a reference for the user.
2.2 Mpx Encoder
The first available menu is Mpx Encoder, once the edit / enter key is pressed you access the submenu
parameters.
2.2.1 Audio Levels
In the first submenu of the Mpx Encoder, the MPX output level is indicated.
The subsequent displays show the input levels of the left / right channels, with a graduated scale in dB in
one and both channels in the other.
The input level can be adjusted by 0.5dB steps through the next menu by using the "In Gain" parameter or,
finely, using the trimmers on the rear panel next to the audio input connectors (TRIMs).
A 0dB input level on both channels will produce a total deviation relative to the audio only, excluding the
pilot carrier and the RDS signal, of about 67KHz.
By adding these two components, you will achieve the 75KHz total deviation.

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2.2.2 Pre Enphasis, Audio Level and Clipper
In the second submenu of the Mpx Encoder you can adjust the audio signal input level at 0.5dB steps,
activate the clipper and pre-phase. If a fine adjustment of the input level is required, it is possible to act
on the TRIM trimmers placed next to the audio input connectors that allow a continuous adjustment of +/-
0.5dB.
2.2.3 Pilot Level And Phase
In the third submenu of the Mpx Encoder you can set the level and phase of the pilot tone of the stereo
coder.
2.3 Rds Encoder
The second available menu is Rds Encoder, the parameters in this menu are related to the
programming of the internal coder.
2.3.1 PS,PI, PTY Indications
In the first submenu of the Rds Encoder the following parameters are shown:
PS: Program Station Name
PI: Program Identification,
TY: Program TYpe,
MS:Music/Speech, 1 for the most of the time music programs, 0 for the most of the time speech programs.
TP: (Traffic Program) 1 indicates that the issuer, during programming, provides traffic information, but
these are not necessarily aired at the moment.
TA: (Traffic Announce) 1 indicates that, at present, the issuer is providing a traffic information program
The PS will only be shown when the coder generates RDS signal internally. In the 'override AF tables' mode,
the PS already on the MPX input will be aired.
In this case, the word 'OVERRIDE' will be indicated instead of the PS.

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2.3.2 Radiotext Indications
In the second sub-menu of the RDS Encoder are shown the strings related to internally programmed
radiotext.
Radiotext:
this is a very long
Radiotext:
radiotext to show it
Radiotext:
scrolling
It indicates if the encoder is running then enabled for transmitting the Radiotext and radiotext currently
transmitted.
Note: As the radiotext string is longer than the display, it will be displayed for 20 character blocks each. The
resulting animation is not present on the actually streamed string. An example is shown in the images.
As with the PS, the internal Radiotext is aired and displayed on the display when the unit is not in 'override AF
tables' mode.
If this mode is selected, the radiotext will be transmitted, if present, of the incoming MPX signal and
"OVERRIDE MODE" will be displayed on the display.
2.4 Changeover
The third available menu is Changeover, which defines the modes of exchange, parameter setting, timing
and intensity thresholds.
2.4.1 Set Up main channel and back up
In the first changeover submenu, you can set the main (Main) and Back (Main) channels, each of which
can be selected from:
STE: Stereo-encoded L / R audio input, internally generated RDS
MON: L / R audio input, internally generated RDS
MPX: External MPX input, RDS generated internally if an incoming RDS signal is not available.
FILT: External MPX input eliminating the RDS sub-carrier.
this mode is selected if you want to complete the RDS block replacement on the incoming MPX signal or
replace the AF tables only.
The current channel is also provided

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Out: <STE,MON,MPX,FILT> channel currently on the air
Out: Mute no channel is aired because both are in alarm condition
Out: BYP! the output was bypassed to the MPX input for one or more internal malfunctions (see window
status / alarms)
Finally, the status of the timer is displayed for switching to the backup channel or, from the backup
channel, to the main channel.
Ctr:0
If swap channels are switched on (SwapChans: ON), the words "Main" and "Back" will alternately flash with
"Swap" to indicate this state.
You will see that the backup channel will be aired even if the main channel is valid.
The "Main" and "Back" labels will continue to indicate the channels that, under normal conditions, are the
main and secondary channels, respectively.
2.4.2 Changeover Setting Mode
In the second changeover submenu, you can set the various parameters that handle the exchange
conditions:
Audio Level:On/Off -audio level (can be set in percent by 100% in the THRESHOLDS window)
PI Code:On/Off -PI code verification, this on the incoming MPX signal, must be equal to the
internally generated code
RDS Quality:On/Off -Incoming RDS signal quality (can be set as a percentage in the THRESHOLDS
window)
Pilot Level:On/Off -pilot tone level that must be higher than 4KHz (the threshold is set to 3KHz)
MPX Noise:On/Off -signal / noise ratio level on MPX channel (adjustable in dB in the Noise
window)
SAT Dropouts:On/Off -dropouts detected on the stereo L-R audio channel, then from the SAT receiver
(Settable Sensitivity in the Dropouts window)
In the following menus are the setting parameters of each respective item.
2.4.3 Changeover Time Set
In the third Changeover submenu, Alarm Timings can set commutation times
Alarm timeout: timeout (in seconds) before the exchange is made once an alarm condition is detected.
Back Timeout: timeout (in seconds) to restore the main channel once the cause of the alarm has been
cleared.

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2.4.4 RDS Substitution(override) and Tunnel RDS-MPX
In the fourth Changeover submenu you can select the override mode of the incoming RDS signal, the
available modes are:
AfTables: only the alternative frequency tables are replaced, leaving the other contents of the
incoming RDS signal unaltered.
Full: the incoming RDS signal is suppressed and replaced completely with the internally
generated input signal.
Both modes are supported if the MPX channel, master or backup, is set to "FILT" mode.
STL RDS on SAT: By setting this flag a1, you can have the RDS stream received from the MPX input even
when the L / R channel is airing.
2.4.5 Dropouts Reconize
In the fifth changeover submenu, the parameters of the satellite dropouts are available:
HW Dropouts: By setting this flag to 1, it activates the dropouts detection on the GPIO input, the contacts
of this port relative to the DROPOUTS input must be connected to the SAT receiver status output, this
function requires a (Hardware) acknowledgment from the decoder sat.
During regular operation, then in the absence of dropouts detected by the SAT decoder the contacts must
be closed.
SW Drops sens: It allows you to choose three levels of sensitivity (minimum, average, maximum) in
software recognition made by the Dropouts Cahngeover DSP in the L / R audio inputs that come from the
SAT decoder.
2.4.6 PI Code Control
In the sixth Changeover submenu there are two extensive swap configuration flags:
Fast PI-Plt SW: if "1" is switched on and an exchange mode is entered that includes control of the PI code
and / or pilot tone level, causes immediate switching to the reserve channel if an unsuitable PI code is
detected and / or the tone is missing pilot.
Ignore REG PI: if activated "1", it will validate the incoming PI code and all its regional variants.
For example, having a PI 5252 internally programmed, 5452 or 5C52 will also be considered valid.
This flag should be programmed if you intend to use an exchange mode that includes the PI code control and