Worldcast Systems HFM0750W, HFM1000W, HFM0350W User Manual

HELIOS FM 350 W

HELIOS FM 750 W
HELIOS FM 1000 W
HELIOS FM 1500 W
HELIOS FM 2000 W

USER MANUAL

87.5 – 108 MHz

STEREO AND MULTIPLEX COMPACT FM DIGITAL TRANSMITTER

WITH TCP/IP MONITORING*

*depending on options

Date: 2012/08/28

ecreso WorldCast Systems Group

web: www.ecreso.com - e-mail: [e-mail]

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

TABLE OF CONTENTS

1. INTRODUCTION ................................................................................................................................. 5

1.1. About Ecreso .............................................................................................................................. 5

1.2. Before you start .......................................................................................................................... 6

2. DESCRIPTION .................................................................................................................................... 7

2.1. General description .................................................................................................................... 7

2.2. Accessories ................................................................................................................................ 7

2.3. Helios FM 350 W / 750 W / 1000 W / 1500 W / 2000 W Description ......................................... 8

2.3.1. Front panel ............................................................................................................................ 8

2.3.2. Rear panel ............................................................................................................................. 9

2.3.3. Opened cover ...................................................................................................................... 11

2.3.4. Synoptic ............................................................................................................................... 13

2.3.5. 3U Rack ............................................................................................................................... 14

2.4. Protecting the transmitter ......................................................................................................... 14

2.4.1. Surge Protector ................................................................................................................... 14

2.4.2. Protection against VSWR .................................................................................................... 15

2.4.3. Protection against high temperature ................................................................................... 15

2.4.4. Protections incorporated into the PSU ................................................................................ 15

3. TECHNICAL SPECIFICATIONS ....................................................................................................... 16

3.1. RF section ................................................................................................................................ 16

3.2. Composite operation ................................................................................................................ 16

3.3. Stereo operation ....................................................................................................................... 16

3.4. Mono operation ........................................................................................................................ 16

3.5. AF inputs .................................................................................................................................. 17

3.6. HF output .................................................................................................................................. 17

3.7. Power supply ............................................................................................................................ 17

3.1. Interface panel .......................................................................................................................... 18

3.2. Environmental .......................................................................................................................... 18

3.3. Physical .................................................................................................................................... 18

3.4. Miscellaneous ........................................................................................................................... 19

4. STARTING UP YOUR TRANSMITTER ............................................................................................ 20

4.1. Connecting the transmitter ....................................................................................................... 20

4.2. Using the front panel ................................................................................................................ 21

4.2.1. Setting the transmitter ......................................................................................................... 21

4.2.2. Input selection ..................................................................................................................... 22

4.2.3. Setting the MPX inputs ........................................................................................................ 23

4.2.4. MPX configuration ............................................................................................................... 24

4.2.5. Setting the analog or AES inputs ........................................................................................ 25

4.2.6. Getting on air ....................................................................................................................... 25

4.3. Using the PC application .......................................................................................................... 26

4.3.1. Connecting with the control software application ................................................................ 26

4.3.2. Setting the transmitter ......................................................................................................... 26

4.3.3. Input selection ..................................................................................................................... 26

4.3.4. Setting the MPX inputs ........................................................................................................ 27

4.3.5. MPX configuration ............................................................................................................... 27

4.3.6. Setting the analog or AES inputs ........................................................................................ 27

4.3.7. Getting on air ....................................................................................................................... 27

4.4. With the TCP/IP option ............................................................................................................. 28

4.4.1. Network configuration ......................................................................................................... 28

4.4.2. Connecting to the web interface.......................................................................................... 28

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

5. FRONT SCREEN USE ...................................................................................................................... 29

5.1. Overview................................................................................................................................... 29

5.2. Working principe ....................................................................................................................... 29

5.3. Structure of the menus ............................................................................................................. 31

5.3.1. Overview ............................................................................................................................. 31

5.3.2. First level measurements .................................................................................................... 32

5.3.3. First level menus ................................................................................................................. 33

5.3.4. TX PARAMETERS Menu .................................................................................................... 34

5.3.5. ALARMS Menu.................................................................................................................... 34

5.3.6. INPUT SWITCH Menu ........................................................................................................ 35

5.3.7. LINE1 Menu ........................................................................................................................ 36

5.3.8. MPX in Menu ....................................................................................................................... 37

5.3.9. Audio Gene Menu ............................................................................................................... 38

5.3.10. Modulation Menu ................................................................................................................. 39

5.3.11. Stereo encoder Menu .......................................................................................................... 40

5.3.12. RDS / SCA encoder Menu .................................................................................................. 41

5.3.13. FM limiter Menu................................................................................................................... 42

5.3.14. RDS Menu ........................................................................................................................... 43

5.3.15. Network Menu ..................................................................................................................... 44

5.3.16. COM Menu .......................................................................................................................... 45

5.3.17. Power supply Menu ............................................................................................................. 46

5.3.18. Temp/Fan Menu .................................................................................................................. 47

5.3.19. Time/Date Menu .................................................................................................................. 48

5.3.20. License Menu ...................................................................................................................... 49

5.3.21. About / System Menu .......................................................................................................... 50

5.3.22. Easy/Expert Menu ............................................................................................................... 51

5.3.23. Exit Menu ............................................................................................................................ 51

5.4. Main parameters description .................................................................................................... 52

5.4.1. TX PARAMETERS Menu .................................................................................................... 52

5.4.2. INPUT SWITCH Menu ........................................................................................................ 52

5.4.3. Menu LINE 1 (ANA) ............................................................................................................ 53

5.4.4. LINE 2 Menu (AES) ............................................................................................................. 54

5.4.5. MPX IN Menu ...................................................................................................................... 54

5.4.6. PLAYER Menu .................................................................................................................... 55

5.4.7. AUDIO GENE Menu ............................................................................................................ 55

5.4.8. MODULATION Menu .......................................................................................................... 56

5.4.9. STEREO ENCODER Menu ................................................................................................ 57

5.4.10. RDS / SCA ENCODER Menu ............................................................................................. 57

5.4.11. FM LIMITER Menu .............................................................................................................. 58

5.4.12. RDS Menu ........................................................................................................................... 58

6. SERIAL COMMANDS ....................................................................................................................... 62

6.1. Working principle ...................................................................................................................... 62

6.2. Serial commands ...................................................................................................................... 63

6.2.1. System commands .............................................................................................................. 63

6.2.2. Measurement commands .................................................................................................... 64

6.2.3. Configuration commands .................................................................................................... 64

6.2.4. Alarm commands ................................................................................................................ 65

6.2.5. Input commands .................................................................................................................. 66

6.2.6. Encoder commands ............................................................................................................ 68

6.2.7. RDS commands .................................................................................................................. 69

6.2.8. Transmitter commands ....................................................................................................... 70

6.2.9. Status commands ............................................................................................................... 71

6.2.10. Communication board commands ...................................................................................... 71

6.3. HyperTerminal connection ....................................................................................................... 72

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

7. CONFIGURATION WITH THE PC APPLICATION .......................................................................... 75

7.1. Overview................................................................................................................................... 75

7.2. Using the application ................................................................................................................ 75

7.2.1. Connection .......................................................................................................................... 75

7.2.2. Configuration ....................................................................................................................... 76

7.2.3. Saving parameters .............................................................................................................. 80

8. REMOTE CONTROL AND MONITORING WITH THE GPIO BOARD ............................................ 81

8.1. Introduction ............................................................................................................................... 81

8.2. Description of control and monitoring functions ....................................................................... 81

8.3. Remote control function pinout ................................................................................................ 82

8.4. Remote monitoring function pinout .......................................................................................... 82

8.5. Physical representation of the GPIOs ...................................................................................... 83

8.6. Management using serial commands ...................................................................................... 84

9. THE EMBEDDED WEBSITE ............................................................................................................ 86

9.1. Introduction ............................................................................................................................... 86

9.2. Connecting to the embedded web site ..................................................................................... 86

9.3. Viewing the Status .................................................................................................................... 87

9.4. Configuration ............................................................................................................................ 88

9.5. System ...................................................................................................................................... 89

9.5.1. Product ID ........................................................................................................................... 89

9.5.2. Date / Time .......................................................................................................................... 90

9.5.3. Users ................................................................................................................................... 91

9.5.4. Network ............................................................................................................................... 92

9.5.5. Support ................................................................................................................................ 93

9.5.6. SNMP Agent ........................................................................................................................ 94

9.5.7. Notifications ......................................................................................................................... 96

9.5.8. Common traps ..................................................................................................................... 97

9.5.9. IRT Traps ............................................................................................................................ 98

9.5.10. Ecreso Traps ....................................................................................................................... 99

9.6. About ........................................................................................................................................ 99

APPENDIX A: SOFTWARE OPTION MANAGEMENT ...................................................................... 100

A.1. Using the front panel application .............................................................................................. 100

A.2. Using the PC application .......................................................................................................... 101

A.3. Using serial commands ............................................................................................................ 102

APPENDIX B: ADJUSTING THE IMPEDANCE OF ANALOG INPUTS ............................................ 103

APPENDIX C: MAINTENANCE .......................................................................................................... 104

C.1. Changing the fuses................................................................................................................... 104

C.2. Changing the fan ...................................................................................................................... 105

C.3. Changing the surge protector ................................................................................................... 106

APPENDIX D: TROUBLESHOOTING ................................................................................................ 107

D.1. Calibration ................................................................................................................................ 107

D.2. Complete Reset of the Helios FM ............................................................................................ 107

FOR MORE INFORMATION ............................................................................................................... 108

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

1. INTRODUCTION

1.1. About Ecreso

Founded in 1956 near Bordeaux, ECRESO was created by radio broadcasting enthusiasts and counts today
as one of the most important players on the international broadcasting stage.

ECRESO offers analog and digital radio as well as digital TV transmitters (FM, DAB, DAB+, T-DMB, DVB­T/H), low power transmitters, which are air-cooled, as well as high power devices either air or water-cooled.

ECRESO is part of the WorldCast Systems group of companies which combines the collective expertise &
extensive product portfolio of several major broadcast brands to offer turnkey systems in all major analog
and digital technologies. Other brands within the group include:

Audemat who designs monitoring equipment for analog and digital radio and TV as well as an

extensive range of facility remote control solutions.

APT Codecs who offer reliable and cost effective broadcast codec platforms delivering high quality

content over IP, T1, E1, ISDN & Leased Lines.

As such, WorldCast Systems can offer complete broadcast solutions for the delivery, transmission and
monitoring of broadcast content throughout the broadcast chain.

The group is founded on three core values:

1) Product innovation:
Audemat places a key emphasis on Research & Development and its innovative approach has been
repeatedly recognized by the industry. WorldCast Systems has won awards for innovation at
consecutive NAB Shows for over 10 years.

2) Customer satisfaction:
Audemat is dedicated to ensuring the best quality, value and service for its customers and has
achieved IS0 9001 certification.

3) Sustainable Development:
Audemat is committed to sustainable development and demonstrates this commitment in several
ways: it adheres to the UN Global Compact project and all new products are developed in keeping
with an eco-design philosophy and built within Audemat’s low energy consumption factory.

Audemat employs around 80 employees at headquarters in Bordeaux-Merignac, France. Audemat also has
a subsidiary in Miami, USA that manages the North & South American markets as well as sales offices in the
UK and India. An extensive network of international dealers and distributors means that the company is
represented in over 45 countries throughout Europe, Middle East, Africa and Asia.

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

1.2. Before you start

This equipment complies with international mechanical and electrical standards. To maintain this
compliance, as well as to ensure proper and safe working conditions and avoid electrical shocks and fire
hazards, you must comply with the following recommendations:

The device should only be utilized in the conditions described in the user manual.
The device is designed for industrial usage and must only be operated by qualified personnel.
The device may be heavy; it must be lifted and handled with care, specifically during unpacking and

set up.

Electrical precautions

Unplug from mains outlet before any intervention.
Any maintenance, adjustment or repair must be carried out by personnel specifically trained by

WorldCast Systems.

Before switching on the device, make sure the nominal voltage specified on the device matches the

mains nominal voltage.

The device should only be operated on a stable electrical network. If the electrical network is not

stable, a power conditioner, such as a UPS, must be used

The device must only be used with a plug that incorporates a protective ground contact.
To avoid any risk of electrocution, the protection conductor must not be cut, intentionally or

accidentally, either on the device or on the power cord.

High quality shielded cables are mandatory.

Environmental precautions

It is necessary to verify that environmental conditions comply with those recommended in the

manual.

Nothing must obstruct the ventilation.
To avoid any electromagnetic interference, the device must only be used when it is closed, installed

in a cabinet and connected to the earth as per the instructions.

The device should not be exposed to dripping or splashing and no objects filled with liquids, such as

coffee cups, should be placed on the equipment.

Connectors may be hot on high power units.

Precautions regarding the lithium battery

This device includes a lithium battery.
If the battery is not correctly replaced, there is a risk of explosion.
Only replace it with a battery of the same type. Contact us before attempting to use another type

Do not puncture the battery
Do not throw the battery in fire
Do not immerse the battery in water
Do not throw away the used battery, recycle it instead. You may send it back to us if needed.

If these precautions are not followed, the guarantee will be void.

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

2. DESCRIPTION

2.1. General description

Combining the very latest technologies with our proven RF experience, our 350 W, 750 W, 1000 W, 1500 W
and 2000 W transmitters have been designed to offer an innovative and highly reliable solution.

Among the first FM transmitters based on 6th Generation MOSFET, these transmitters are not only more
robust, they also deliver efficiency of up to 74%. Top signal quality and performance are achieved thanks to
the “FM Band Direct to Frequency” digital modulator which is at the heart of this range.

The manufacturing quality and the simplicity of use make these truly powerful transmitters to broadcast
analog FM programs.

The Helios FM 350 W, the Helios FM 750 W, the Helios FM 1000 W, the Helios FM 1500 W and the Helios
FM 2000 W are fully protected against overheating, VSWR and lightning.

In addition, several innovative features are available, such as RDS encoding and automated audio backup.
Fully featured for local maintenance and configuration, it also allows full remote control by Web server,
SNMP, RS232 or GPIOs*.

* Options available with the current version are:

Basic RDS: the internal RDS encoder makes it possible to manage basic RDS parameters (PI, PS,

TP, TA, PTY, MS, DI, radiotext, PTYN, group sequence, AF, 1 PSN, 2 DSN, dynamic scrolling PS)

GPIO: this additional board allows remote control and management of your transmitter.
TCP/IP: this additional board allows remote configuration via a web site and SNMP management

Please refer to Appendix A for more information on option management.

Project co-financed by the European Union, involved in the Aquitaine Area,
through the European Funds for local development.

2.2. Accessories

The Helios FM is supplied with:

 1 power cable
 1 serial cable
 1 USB cable
 4 10 A fuses (for Helios FM 350 W, 750 W and 1000 W only)
 1 interlock plug
 1 box including 1 CD (documentation + PC application) and 1 quick start notice.

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

RF monitoring output

Indicators: CPU, Fault,
Warning, RF (3 dB),
VSWR and Interlock

RS232 port

RF on/off and
local mode keys
and LEDs

LCD contrast

Navigation
keys

LCD display

2.3. Helios FM 350 W / 750 W / 1000 W / 1500 W / 2000 W Description

2.3.1. Front panel

Description of indicator LEDs:

CPU: blinks to indicate CPU activity
FAULT: major fault of the unit (RF / VSWR protection, Temperature, …)
WARNING: minor fault of the unit (ambient temperature, radiator temperature, fan, current, voltage,

loss of signal).

VSWR: VSWR of the unit
RF (3dB) : 3 dB of the unit
INTERLOCK: indicates that internal or external safety links are not activated

RF: indicates that the unit is on RF=ON. Associated to the RF button
LOCAL: indicates that the unit is in local mode. Associated to the Local button

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

Mains

7/16 RF output

Communication
board (option) *

Interlock

GPIO

(option)

Ground

MPX/SCA1
MPX/SCA2
19 kHz

Audio input Line1

(Ana or AES)

Audio input Line2

(Ana or AES)

Mains

7/16 RF output

Interlock

Ground

Communication

board *

N RF input

GPIO

(option)

MPX/SCA1
MPX/SCA2
19 kHz

Audio input Line1

(Ana or AES)

Audio input Line2

(Ana or AES)

2.3.2. Rear panel

Helios FM 350 W / 750 W / 1000 W

Helios FM 1500 W / 2000 W

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

* Two optional communication boards are available:
TCP/IP board

2 RS232 ports (COM1 and COM2)
1 µSD card
1 USB port
1 Ethernet port
1 CAN port

CAN board

2 RS232 ports (COM0 and COM1)
1 slave USB port
1 CAN port

On the CAN board, the COM0 port is reserved for the unit’s upgrade.

Please not that the 19 kHz output and the 10 MHz input are not enabled on this preliminary version.

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

High output

power supply

Output filter

Power bloc

Fans

LCD display

on control/display board

Surge protector

GPIO board

Communication

board

RF amplifier bloc

RF output
detection

Control board

Mains filter

RF input board

Digital modulator

Audio inputs

2.3.3. Opened cover

Helios FM 350 W / 750 W / 1000 W

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

High output

power supply

Output filters

LCD display

on control/display board

RF output

detection

Control board

Communication

board

Output

combiner

RF amplifier

blocs

RF input

board

Input

splitter

Fans

Power bloc

Digital modulator

Helios FM 1500 W / 2000 W

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

2.3.4. Synoptic

Helios FM 350 W / 750 W / 1000 W

Helios FM 1500 W / 2000 W

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

G1

D1

AES1

G2

D2

AES2

MPX

SCA

Audio 1

Audio 2

Internal player

19 kHz output

Audio

2.3.5. 3U Rack

The choice of stainless steel as material guarantees against corrosion. The rack structure and the structure
of the monoblock front panel reinforce the device. The rectangular outline of the front panel has an LCD
display. The transport handles are mechanically interchangeable and can be removed. The cover is fixed by
a set of M3 POZIDRIV screws and can be easily removed. The user has access to every module to set the
parameters of the device.

2.4. Protecting the transmitter

To ensure the transmitter will work with no risk of damage, a series of protections have been set.

2.4.1. Surge Protector

An optional surge protector module can be added to the chassis. The goal of this module is to limit the surge
caused by lightning. It works after the main protector usually located in the electrical board and before the
power supply protector, thus offering an optimal level of protection. The protector principle is to capture the
surge and divert it to the ground so as to protect the transmitter and its power supplies.

The surge protector used by Ecreso includes multi-MOV technology and a gas discharge tube (GDT) giving
a very high protection and very low parasitic capacitance and leakage currents.

Please refer to Appendix B ‘Maintenance’ for the procedure to replace the surge protection module.

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

2.4.2. Protection against VSWR

Several systems coexist to offer the optimal protection against VSWR:

Hardware protection:

In case of open circuit or short-circuit, the RF is cut. When the situation returns to normal, it is
automatically reset.

Software protection:

The reflected power is limited to 3 W for Helios FM 20 W, to 10 W for Helios FM 100 W, to 40 W for
Helios FM 350 W / 750 W / 1000 W and to 80 W for Helios FM 1500 W / 2000 W

Software settings for the reflected power security management (see VSWR Trip, section 5.4.1).

2.4.3. Protection against high temperature

The Power Supply module includes its own protector against high temperature: the protector cuts off the
power supply output voltage if the temperature is abnormally high. When the situation returns to normal, it is
automatically reset. The temperature threshold value varies depending on the PSU.

The ambient temperature and the radiator temperature are monitored.

The max ambient temperature is set by software (see menu Temp/Fan, section 5.3.18), default value

is 50°C. In case of overshoot, a Warning alarm is triggered (Alarm Amb).

The max radiator temperature is set by serial command (see serial command CONF.HEAT.MAX,

section 6.2.3), default value is 65°C. In case of overshoot, a Warning alarm is triggered (Alarm
Heat).

The max internal temperature is set at 70°C. If the temperature exceeds 70°C, the RF is cut off and

a fault alarm is triggered (Alarm Temp).

2.4.4. Protections incorporated into the PSU

The main power supply voltage and the auxiliary power supply voltage are monitored as follows:

Main power supply:

if the difference between the measured voltage and the expected voltage is greater than 10%, a
Warning alarm is triggered (Alarm Volt1). Expected voltage is automatically computed.

Auxiliary power supply:

Voltage should be either 5, 12 or -12 V. if the difference between the measured voltage and the
nominal voltage is greater than 10%, a Warning alarm is triggered (Alarm Volt Aux).

The amperage is also measured. The threshold varies depending of the power of the Helios FM: 2 A for the
Helios FM 20 W, 8.5 A for the Helios FM 100 W, 20 A for the Helios FM 350 W, 23 A for the Helios FM 750
W, 29 A for the Helios FM 1000 W, 26 A per amplifier pallet for the Helios FM 1500 W, 31 A per amplifier
pallet for the Helios FM 2000 W. In case of overshoot, a Warning alarm is triggered (Alarm Cur) and the
nominal power is reduced.

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

3. TECHNICAL SPECIFICATIONS

3.1. RF section

Frequency range 87.5 to 108 MHz
Summary of different steps 10 kHz
Frequency stability < 10-6 per year
Power range 50-350 W, 50-750 W, 50-1000 W, 150-1500 W or 200-2000 W @

ROS=1.35

Power output continuously 50-350 W, 50-750 W, 50-1000 W, 150-1500 W or

200-2000 W

Spurious and harmonic suppression > 75 dBc

3.2. Composite operation

Bandwidth > 40 Hz to 53 kHz @ 0.1 dB
> 20 Hz to 60 kHz @ 0.2 dB
> 60 kHz to 80 kHz @ 0.4 dB
Intermodulation distortion < 0.05%
FM S/N ratio > 80 dB RMS @ 75 kHz deviation
AM noise < 0.1% (50 dB) RMS (20-20 000 Hz)

3.3. Stereo operation

Bandwidth > 20 Hz to 15 kHz @ 0.1 dB
38 kHz discontinuance > 50 dB
Stereophonic crosstalk > 50 dB
Preemphasis 0 µs, 50 µs or 75 µs

3.4. Mono operation

Bandwidth > 40 Hz to 15 kHz @ 0.1 dB
Out of band rejection > 40 dB @ 19 kHz
Preemphasis 0 µs, 50 µs or 75 µs

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

3.5. AF inputs

Analog (LINE1)
Connector "XLR" type
Impedance > 10 kΩ by default, adjustable to 600 Ω by jumpers, balanced
Bandwidth Software adjustable
Level Software adjustable (-18/+18 dBu range)

AES (LINE2)
Connector "XLR" type
Impedance > 110 Ω balanced
Bandwidth Software adjustable
Level Software adjustable (-20 to 0 dBFS range)
Sampling rate Auto adjusted up to 192 kb/s
Bit 16, 24, 32

Multiplex (MPX/SCA)

Connector "BNC" type
Impedance > 5 kΩ unbalanced
Level Software adjustable (-18/+18 dBu range)

3.6. HF output

Connector 7/16 type
Impedance 50 Ω

Monitoring (RF Monitor)

Level

Helios FM 350 W / 750 W / 1000 W 10 dBm 3 dB @ 750 W at main output

Helios FM 1500 W / 2000 W 10 dBm 3 dB @ 1500 W at main output
Slope 20 x Log (F/98)
Directivity >20 dB in the band

3.7. Power supply

Voltage 184 VAC to 264 VAC
Frequency 47 Hz - 63 Hz
Max consumption 550 W @ nominal power (350 W version)
1150 W @ nominal power (750 W version)
1550 W @ nominal power (1000 W version)
2300 W @ nominal power (1500 W version)
3050 W @ nominal power (2000 W version)
Fuses (for Helios FM 350 W / 750W / 1000 W) 10 AT

Page 17

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

3.1. Interface panel

Indicators Green CPU LED: CPU activity
Red FAULT LED: major fault
Yellow WARNING LED: minor fault
Red RF (3 dB) LED: RF fault (3 dB)
Red VSWR LED: VSWR fault
Green INTERLOCK LED: safety interlock
Green RF LED: RF on
Orange LOCAL LED: local mode
Screens Back lighted LCD: displays operating parameters and menus.
Buttons RF, local, +, -- and OK

3.2. Environmental

Nominal operating temperature 5°C to 45°C
Maximum operating temperature 0°C to 50°C
Warehousing temperature -20°C to +70°C
Warehousing time < 10 years
Cooling Internal ventilation
Helios FM 350 W: ~20 I/s
Helios FM 750 W: ~20 I/s
Helios FM 1000 W: ~20 I/s
Helios FM 1500 W: ~55 l/s
Helios FM 2000 W: ~55 l/s

3.3. Physical

Helios FM 350 W / 750 W / 1000 W

Overall dimension 19’’ (482.6 mm) X 3U (133.5 mm) X 470 mm
Rack size without front panel 440.4 X 126.2 X 432 mm (WxHxD)
Enclosure depth required 600 mm
Mounting 19’’enclosure, with 4 M6X12 screws
Weight around 13 kg

Helios FM 1500 W / 2000 W

Overall dimension 19’’ (482.6 mm) X 3U (133.5 mm) X 690 mm
Rack size without front panel 440.4 X 126.2 X 620 mm (WxHxD)
Enclosure depth required 700 mm
Mounting 19’’enclosure, with 4 M6X12 screws
Weight around 18 kg

Page 18

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

3.4. Miscellaneous

Marking CE
Standards 1999/5/CE (R&TTE)
ETS 302 018 (EMC)
ETS 300 384 (Radio)
NF EN 60215 (Safety)

Page 19

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

2

3
5

6

1

4

2

3
5

1

Rear panel
Helios FM 350 W / 750 W / 1000 W

Rear panel Helios 1500 W / 2000 W

Front panel all versions

4. STARTING UP YOUR TRANSMITTER

4.1. Connecting the transmitter

1. Make sure the interlock plug is present on the rear panel

2. Connect the transmitter RF output to a 50 load with a wattmeter.

3. The 50 charge power must be greater than 500 W for a 350 W transmitter, greater than 1000 W for a

750 W transmitter, greater than 1250 for a 1000 W transmitter, greater than 1875 W for a 1500 W
transmitter and greater than 2500 W for a 2000 W transmitter.

When you acquired your transmitter, the RF amplifier is deactivated and power is set to 0 W. These
settings can be adjusted using the PC application, the front panel application or serial commands.

4. Connect the audio or MPX inputs.

5. To use the PC application or the serial commands, connect a PC to the serial port on the front panel of

the Helios.
If your PC does not have a RS-232 port, use a USB/RS-232 cable.

6. Connect to power using the provided cable; you may unscrew the cable loop and pass the power cable

through it to secure it.

7. Press the Local button on the front panel, then the RF button.

To configure the transmitter using the front panel: see section 4.2.
To configure the transmitter using the PC application: see section 4.3.
To set network parameters (TCP/IO option only): see section 4.4.

To use serial commands, see section 6.

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 0 W

From the main screen, press the "Enter” key to display
menus then the “+” key until you see the TX Parameters

menu.

9 8 . 0 0 M H z 0 W

-> T X P A R A M E T E R S >

1 F R E Q P F W D

-> 9 8 . 0 0 0

Once you see this screen, press “Enter”

You may now set the frequency and the power. The arrow
preceding the frequency indicates that this parameter is
selected: press “Enter” to switch to edit mode.

1 F R E Q P F W D

-> 9 8 . 0 0 0

Using the “+” and “–” keys, adjust the frequency starting

with the last digit. Once you’ve reached the desired value,

press “Enter” to go to the next digit. Follow the same
procedure for all digits and confirm with the “Enter” key.

Use the "+" to go the next parameter.

1 F R E Q P F W D

1 0 4 . 0 5 -> 0

The arrow now appears before the power: set the power in
the same way you set the frequency.

After confirming the power value with the “Enter” key,

enable the RF using the front panel button.

1 G O T O

M A I N -> R F

Press the “+” key until you see this screen. When the RF

menu is selected, press “Enter” to return to the list of

menus.

4.2. Using the front panel

Please refer to section 5.2 for front panel working principle.

4.2.1. Setting the transmitter

Set the power (in W), the frequency (in MHz) and enable the RF:

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

G O T O

-> I N P U T S W I T C H >

1 I N P U T S E L E C T

-> M O D E : M A N U

1 I N P U T S E L E C T

-> M A I N : L I N E 1

1 G O T O

M A I N -> I N P U T S E L

Press the “+” key until you see the Input Select menu.

Then press the “Enter” key.

Browse through the Input Select menu using the “+” and “–

” keys to switch to manual mode.

Select the current input:

"LINE1" for analog (see sections 9 to 11)
"LINE2" for AES (see sections 9 to 11)
"MPX1" for MPX (see sections 8 and 11)
"MPX2" for MPX (see sections 8 and 11)
"PLAYER": internal generator

Use the “Enter” key to switch to edit mode, the “+” and “–”
keys to adjust values and the “Enter” key to confirm.

Press the “+” key until you see this screen. When the Input
Sel menu is selected, press “Enter” to return to the list of

menus.

4.2.2. Input selection

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

G O T O

-> M P X I N >

1 M P X I N

-> M P X 1 >

2 M P X - I N -> M P X 1

-> L E V E L : + 0 6 . 0 0

2 G O T O

-> M P X - I N M P X 1

1 G O T O

-> M A I N M P X - I N

Press the “+” key until you see the MPX In menu. Then

press the “Enter” key.

Press the “Enter” key once more to set the MPX1 input.

Browse through the MPX1 menu using the “+” and “–”

keys to set the nominal level between -50 and +50 dBu,

Use the “Enter” key to switch to edit mode, the “+” and “–”

keys to adjust values and the “Enter” key to confirm.

Press the “+” key until you see this screen. When the

MPX-IN menu is selected, press “Enter” to return to main
MPX menu and set the MPX2 input in the same way.

To return to the main screen, press the “+” key until you
see this screen. When the Main menu is selected, press
“Enter” to return to the list of menus.

4.2.3. Setting the MPX inputs

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

G O T O

-> S T E N C O D E R >

Press the “+” key until you see the ST Encoder menu.
Then press the “Enter” key.

1 S T E N C O D E R

-> M O / S T : S T E R E O

1 G O T O

M A I N -> C O D E R

Press once again the “Enter” key to set the audio type.

Select what you need using “+” and “–” keys:

STEREO
MONO
MONO_L
MONO_R

Selecting STEREO enables the internal 19 kHz; you will
therefore want to select MONO for an MPX input.

Confirm with the “Enter” key and press “+” until you see

this screen. When the CODER menu is selected, press
“Enter” to return to the list of menus.

G O T O

-> S T E N C O D E R >
G O T O

-> M O D U L A T I O N >

Press the “+” key until you see the Modulation menu.

Then press the “Enter” key.

1 M O D U L A T I O N

-> D E V M P X : 1 2 7 . 2

1 M O D U L A T I O N

-> D E V P I L O T : 1 8 . 4

Browse through the Modulation menu using the “+” and “–”

keys to set the total deviation between 0 and 150 kHz,

set the pilot deviation between 0 and 25.5 kHz.

For each of these values, use the “Enter” key to switch to
edit mode, the “+” and “–” keys to adjust values and the
“Enter” key to confirm.

1 G O T O

M A I N -> M O D U L A T I O N

Press the “+” key until you see this screen. When the

Modulation menu is selected, press “Enter” to return to the

list of menus.

4.2.4. MPX configuration

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

G O T O

-> L I N E 1 >

1 L I N E 1

-> L E V E L : + 0 6 . 0 0

1 G O T O

M A I N -> L I N E 1

Press the “+” key until you see the Line1 (or Line2) menu.

Then press the “Enter” key.

Browse through the Line1 (or Line2) menu using the “+”

and “–” keys to set the nominal level between -50 and +50

dBu.

Use the “Enter” key to switch to edit mode, the “+” and “–”

keys to adjust values and the “Enter” key to confirm.

Press the “+” key until you see this screen. When the
Line1 (or Line2) menu is selected, press “Enter” to return

to the list of menus.

9 8.0 0 M H z 1 0 0 W

-> E A S Y

G O T O

-> L I N E 1 >

1 L I N E 1

-> P R E A C : 5 0

1 G O T O

-> M A I N -> L I N E 1

Press the “+” key until you see the Easy menu. Then press
the “Enter” key, “+” and “Enter” again to switch to Expert

mode.

Go back to the Line1 menu. Press the "Enter" key then the
“+” key to change the pre-accentuation.

Use the “Enter” key to switch to edit mode, the “+” and “–”

keys to adjust values and the “Enter” key to confirm.

Press the “+” key until you see this screen. When the

Line1 (or Line2) menu is selected, press “Enter” to return
to the list of menus.

4.2.5. Setting the analog or AES inputs

Default transmitter pre-accentuation is 50 µs. Depending on your country, you might need to switch it to 75
µs (in the United States for instance). The Pre-accentuation parameter is only visible in Expert mode; you
must therefore first change the front panel working mode:

4.2.6. Getting on air

1. Disable the RF to turn off the transmitter using the front panel RF button.

2. Make sure the RF indicator LED is off.

3. Disconnect the load and connect the antenna to the transmitter RF output.

4. Enable the RF again using the front panel RF button.

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

4.3. Using the PC application

4.3.1. Connecting with the control software application

1. On the PC, start the control software. This is a set-up tool that will allow you to quickly set and test your
transmitter. It is available on the supplied CD.

On the transmitter’s page, click the control interface link to download the zipped file to your PC.

Extract the .exe file. You do not need to install it, simply double-click on ENGI_REV_xxx.exe to

launch the application.

2. Select the serial port connected to the Helios, and the port speed (9600 for the front panel connector).

4.3.2. Setting the transmitter

1. Set the power (in W), the frequency (in MHz) and enable the
RF.

2. To send a parameter value to the transmitter, click the login
button; no password is set in factory. Click the button to

the right of the text zone.

3. A set of buttons give access to other parameters. Click on
one of them to open a window displaying associated

parameters. The “Audio Input” and “Modulator” windows will

enable input and MPX configuration.

4.3.3. Input selection

The input can be set to:

Line1 for the analog inputs (see sections 4.3.4 to 4.3.6)
Line2 for the AES (see sections 4.3.4 to 4.3.6)
MPX1 and MPX2 inputs (see sections 4.3.3 and 4.3.6)
Internal generator

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

4.3.4. Setting the MPX inputs

Click the "Audio Input" button:

Set the nominal level between -50 and +50 dBu

4.3.5. MPX configuration

Click the "Modulator" button:

Set the audio type to:

o STEREO
o MONO
o MONO_L
o MONO_R

Selecting STEREO enables the internal 19 kHz; you should

therefore select MONO for an MPX input.
Set the total deviation between 0 and 150 kHz
Set the pilot deviation between 0 and 25.5 kHz

4.3.6. Setting the analog or AES inputs

Click the "Audio Input" button:

Set the nominal level between -50 and +50 dBu
Set the pre-emphasis to 0, 50 or 75 µs depending on

your country (50 µs in Europe, 75 µs in the USA).

4.3.7. Getting on air

1. Disable the RF to turn off the transmitter using the front panel RF button.

2. Make sure the RF indicator LED is off.

3. Disconnect the load and connect the antenna to the transmitter RF output.

4. Enable the RF again using the front panel RF button.

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 0 W

From the main screen, press the "Enter” key to display

menus then the “+” key until you see the Network menu.

9 8 . 0 0 M H z 1 0 0 W

-> N E T W O R K >

1 N E T W O R K -> A D R

-> 1 9 2 . 1 6 8 . 0 1 2 . 1 0 3

1 N E T W O R K -> M A S K

-> 2 5 5 . 2 5 5 . 2 5 5 . 0 0 0

Once you see this screen, press “Enter”.

The IP address screen is displayed: press “Enter” to

switch to edit mode. Use the “+” and “–” keys to adjust

values and the “Enter” key to confirm.

Press the “+” key to display the Netmask and modify it if

needed. Press the “Enter” key to confirm.

4.4. With the TCP/IP option

4.4.1. Network configuration

If the optional IP board is present on the transmitter, first set the IP address with the front panel:

4.4.2. Connecting to the web interface

Now the transmitter is set, connect it to the network.
Open a web browser (Google Chrome, Mozilla Firefox …) and enter in

the address bar the transmitter’s IP address such as it was set above.
Select the language if necessary.
Enter the user name and password (default: Admin / admin).

You can now access the web interface.

 Select and set inputs using the front panel or the PC application as described above.

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8.0 0 M H z 1 0 0 W

-> E A S Y

From the main screen, press the “Enter” key to display the
menu and press the “+” key until you see the Easy menu.
Then press the “Enter” key, “+” and “Enter” again to switch
to Expert mode.

1 F R E Q P F W D

-> 9 8 . 0 0 7 5 0

1 F R E Q P F W D

9 8 . 0 0 -> 7 5 0

ENTER

5. FRONT SCREEN USE

5.1. Overview

The transmitter can be entirely set using the front panel application.
For audio configuration you will use the following menus:

Input Switch: to select the main audio source and the secondary audio sources and to set switching

criteria between these sources.
Line1 / Line2 / MPX1 / MPX2 / Audio Gene: to set levels and processes for each source.
Modulation: to set the deviation for each sub-carrier of the multiplex signal. In this menu you may

also enable RDS and SCA.
Stereo Encoder: to choose the content of stereo sub-carrier of the multiplex signal.
RDS/SCA Encoder: to choose the content of the RDS and SCA sub-carrier of the multiplex signal.
RDS: to set the RDS.

The default mode for the transmitter is the “Easy” mode: only menus required for basic configuration are

available. For instance, the RDS menu mentioned above is not visible.

To display all menus, simply switch to “Expert” mode:

On the menu representations section 5.3, “Easy” menus are in green and “Expert” menus are in orange.

 On startup, the screen displays the name of the unit, its software release and its serial number.

5.2. Working principe

Three keys allow you to browse through the menus:

With the and keys, go from one screen to the next or rather from one command to the next: if 2
commands are available on a single screen, press twice to go to the next screen.

A command is selected when an arrow is visible before its name.
Example:

The frequency is selected The power is selected

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

ENTER

ENTER

The and keys are also used to adjust values after the edit mode has been enabled.
To adjust a value, set each character at a time. Text values are set from left to right; number values are set

from right to left.

The button is used to:

Access a lower level menu
Enable the edit mode for parameters that can be modified
Confirm a new value
Return to the higher level menu.
Return to the main screen when pressed for a few seconds.

Some menus include sub-menus. To make it easier to browse through the menus and locate the information,
a small number is visible on the top left of the screen; it gives you the level of the menu you are viewing (1 or

2).

If a text string is longer than the screen, press the key to access the text string and to scroll.

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

Menus followed by  are read-only.
The Alarm menu only appears when at least one alarm is active.
Menu and menu items in orange are only visible in Expert mode.

5.3. Structure of the menus

5.3.1. Overview

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

P r = 8 W V S W R = 1 . 0

||| ||| ||| |||

P E A K = 7 8 k H z

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |

I N P U T S O U R C E

L I N E 1

A N A 1 L E V E L ( d B U )

L = + 1 2 . 0 R = + 1 2 . 0

A E S 2 L E V E L ( d B F S )

L = + 1 2 . 3 R = + 1 2 . 1

M P X 1 L E V E L ( d B U )

1 1 . 8

M P X 2 L E V E L ( d B U )

1 2 . 1

P L A Y E R L V L ( d B F S )

0 . 1

M O N O / S T E R E O

M O N O

First level menu:

RF parameters

ENTER

First level menu:

RF parameters

ENTER

First level menu:

Modulation

ENTER

First level menu:

Input Switch

ENTER

First level menu:

Line 1

ENTER

First level menu:

Line 2

ENTER

First level menu:

MPX-In

ENTER

First level menu:

MPX-In

ENTER

First level menu:

Player

ENTER

First level menu:

Stereo Encoder

ENTER

5.3.2. First level measurements

These values are read-only; bargraphs may also be available.

See next page for first level menus

Page 32

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

9 8 . 0 0 M H z 1 0 0 W

-> T X P A R A M E T E R S >

9 8 . 0 0 M H z 1 0 0 W

-> R F P A R A M E T E R S >

9 8 . 0 0 M H z 1 0 0 W

-> A L A R M S >

9 8 . 0 0 M H z 1 0 0 W

-> I N P U T S W I T C H >

9 8 . 0 0 M H z 1 0 0 W

-> L I N E 1 >

9 8 . 0 0 M H z 1 0 0 W

-> L I N E 2 >

9 8 . 0 0 M H z 1 0 0 W

-> M P X I N >

9 8 . 0 0 M H z 1 0 0 W

-> P L A Y E R >

9 8 . 0 0 M H z 1 0 0 W

-> A U D I O G E N E >

9 8 . 0 0 M H z 1 0 0 W

-> M O D U L A T I O N >

9 8 . 0 0 M H z 1 0 0 W

-> S T E N C O D E R >

9 8 . 0 0 M H z 1 0 0 W

->

R D S / S C A E N C O D E R

M E N U S

-> F M L I M I T E R >

9 8 . 0 0 M H z 1 0 0 W

-> R D S >

9 8 . 0 0 M H z 1 0 0 W

-> N E T W O R K >

9 8 . 0 0 M H z 1 0 0 W

-> C O M >

9 8 . 0 0 M H z 1 0 0 W

-> P O W E R S U P P L Y >

9 8 . 0 0 M H z 1 0 0 W

-> T E M P / F A N >

9 8 . 0 0 M H z 1 0 0 W

-> T I M E / D A T E >

9 8 . 0 0 M H z 1 0 0 W

-> L I C E N S E

9 8 . 0 0 M H z 1 0 0 W

-> A B O U T / S Y S T E M >

9 8 . 0 0 M H z 1 0 0 W

-> E A S Y

9 8 . 0 0 M H z 1 0 0 W

-> E X I T

ENTER

The arrow > at the end of
the 2nd line indicates there
is a sub-menu. Press the
“Enter” key to access it.

Available menus vary
depending on the options
actually implemented on
the transmitter, and its
state.

Menus in orange are only
visible in Expert mode

Each menu is detailed in
the following pages.

5.3.3. First level menus

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

-> T X P A R A M E T E R S >

1 F R E Q P F W D

-> 9 8 . 0 0 1 0 0

1 P W R P F W D P R E F

-> 1 0 0 1 0 0 5 2

1 3 D B M A X V S W R

-> 3 2 5 2 . 0

1 V S W R T R I P

-> O N 3

1 G O T O

M A I N -> R F

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

1 0 4 . 0 5 M H z 1 0 0 W

-> A L A R M S >

MAIN is

selected *

RF is

selected *

ENTER

ENTER

* An arrow appears before
the selected command.

ENTER

5.3.4. TX PARAMETERS Menu

Main measurement screen

5.3.5. ALARMS Menu

This read-only menu is only visible if alarms are present. It then displays one screen per current alarm: press
the key then the key to scroll through them.

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 , 0 0 M H z 1 0 0 W

-> I N P U T S W I T C H >

1 I N P U T S W I T C H

-> I N P U T S E L E C T > 2 I N P U T S E L E C T

-> M O D E : M A N U

1 I N P U T S W I T C H

-> L I N E 1 > 2 I N P U T S E L E C T

-> M A I N : L I N E 1

1 I N P U T S W I T C H

-> L I N E 2 > 2 I N P U T S E L E C T

-> B A C K U P 1 : L I N E 2

1 I N P U T S W I T C H

-> M P X > 2 I N P U T S E L E C T

-> B A C K U P 2 : M P X 1

1 I N P U T S W I T C H

-> P L A Y E R > 2 I N P U T S E L E C T

-> B A C K U P 3 : P L A Y E R

1 I N P U T S W I T C H

-> A U D I O / I P > 2 G O T O

-> S W I T C H -> I N P U T S E L

1 I N P U T S W I T C H

-> T U N E R >

1 I N P U T S W I T C H

-> C R O S S F A D E : 1 8.5

1 G O T O 2 S W I T C H -> T U N E R

-> M A I N

->

I N P U T - S W -> T H R E S H O L D : - 9 0 d B

2 S W I T C H -> T U N E R

-> S I L E N C E : B O T H

2 S W I T C H -> T U N E R

-> D E L A Y : 1 2 0

2 S W I T C H -> T U N E R

-> B A C K D E L A Y : 3 0 s

2 G O T O

-> S W I T C H

->

T U N E R

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

ENTER

ENTER

ENTER

ENTER

MAIN is

INPUT-SW is

selected *

SWITCH is

selected *

INPUTSEL is

selected *

ENTER

SWITCH is

selected *

TUNER is

selected *

ENTER

The tuner sub­menu is similar to
these sub-menus:

Line1,
Line2,
MPX,
Player,
Audio/IP

5.3.6. INPUT SWITCH Menu

Main measurement screen

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

-> L I N E 1 >

1 L I N E 1

P R E S E N C E : L & R

1 L I N E 1

-> L E V E L : + 0 6 . 0 0

1 L I N E 1

-> D R I V E : + 0 . 0

1 L I N E 1

-> R I G H T T R I M : 0 . 0

1 L I N E 1

-> F I L T E R : 1 5

1 L I N E 1

-> P R E A C : 5 0

1 G O T O

-> M A I N -> L I N E 1

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

selected *

LINE1 is

selected *

ENTER

ENTER

5.3.7. LINE1 Menu

(similar to the Line2 menu and to the Player menu)

Main measurement screen

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Page 36

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 7 5 0 W

-> M P X I N >

1 M P X I N

-> M P X 1 >

1 M P X I N 2 M P X - I N -> M P X 1

-> M P X 2 > P R E S E N C E : S T + R + S

1 G O T O 2 M P X - I N -> M P X 1

-> M A I N M P X - I N -> L E V E L : + 0 6 . 0 0

2 M P X - I N -> M P X 1

-> D R I V E : + 0 . 0

2 M P X - I N -> M P X 1

R M S : - 1 2 6

2 M P X - I N -> M P X 1

P E A K : - 1 1 8

2 G O T O

-> M P X - I N M P X 1

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

selected *

MPX-IN is

selected *

ENTER

ENTER

ENTER

MPX-IN is

selected *

MPX1 is

selected *

ENTER

The MPX2 menu is similar
to the MPX1 menu

5.3.8. MPX in Menu

Main measurement screen

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

-> A U D I O G E N E >

1 A U D I O G E N E

-> S T A T E : O F F

1 A U D I O G E N E

-> P R E A C : 5 0

1 A U D I O G E N E

-> L E V E L : + 0 6 . 0 0

1 A U D I O G E N E

-> F R E Q : 1 0 0 0 0 0 . 0 0

1 G O T O

-> M A I N A U D I O - G E N E

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

AUDIO-GENE is

selected *

ENTER

ENTER

5.3.9. Audio Gene Menu

Main measurement screen

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Page 38

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 7 5 0 W

-> M O D U L A T I O N >

1 M O D U L A T I O N

R M S : - 1 2 6

1 M O D U L A T I O N

-> D E V M P X : 7 5 . 0

1 M O D U L A T I O N

-> D E V A U D I O : 6 3 . 9

1 M O D U L A T I O N

-> D E V P I L O T : 7 . 1

1 M O D U L A T I O N

-> D E V R D S : 4 . 0

1 M O D U L A T I O N

-> D E V S C A : 0 . 0

1 G O T O

-> M A I N M O D U L A T I O N

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

MODULATION

is selected *

ENTER

ENTER

5.3.10. Modulation Menu

Main measurement screen

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Page 39

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 7 5 0 W

-> S T E N C O D E R >

1 S T E N C O D E R

-> M O / S T : S T E R E O

1 S T E N C O D E R

A U D I O C H : L I N E 2

1 M O D U L A T I O N

-> P H I 1 9 k : - 1 8 0 . 0 0

1 S T E N C O D E R

-> 1 9 k O U T L E V E L :

1 G O T O

-> M A I N -> C O D E R

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

selected *

CODER is

selected *

ENTER

ENTER

5.3.11. Stereo encoder Menu

Main measurement screen

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Page 40

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

-> R D S / S C A E N C O D E R

1 R D S / S C A E N C O D E R

R D S C H : M P X 2

1 R D S / S C A E N C O D E R

-> R D S I N : M P X 1

1 R D S / S C A E N C O D E R

-> R D S B A C K U P : O F F

1 R D S / S C A E N C O D E R

-> P H I R D S : + 9 0 . 0 0

1 R D S / S C A E N C O D E R

S C A C H : M P X 2

1 R D S / S C A E N C O D E R

-> S C A I N : M P X 2

1 G O T O

-> M A I N -> R D S / S C A

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

LINE1 is

selected *

ENTER

ENTER

5.3.12. RDS / SCA encoder Menu

Main measurement screen

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Page 41

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

-> F M L I M I T E R >

1 F M L I M I T E R

-> C L I P : 1 5 6

1 G O T O

-> M A I N -> L I M I T E R

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

selected *

NETWORK is

selected *

ENTER

ENTER

5.3.13. FM limiter Menu

Main measurement screen

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Page 42

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

-> R D S >

1 R D S

C U R R E N T : M A I N ( 1 )

1 R D S

-> M A I N - D S N ( 1 ) >

1 R D S 2 R D S -> M A I N - D S N

-> A L T - D S N ( 2 ) > -> P I : F 1 0 B -> P T Y : 1 9

1 G O T O 2 R D S -> M A I N - D S N

-> M A I N -> R D S -> P S : M Y R A D I O

2 R D S -> M A I N - D S N

-> M S : 0 9 -> D I : 1 2

2 R D S -> M A I N - D S N

-> T A / T P : T A T P

2 R D S -> M A I N - D S N

-> A F : 8 8 . 5 ; 1 0 8 . 0 ; 9

2 R D S -> M A I N - D S N

-> R T : R A D I O T E X T

2 R D S -> M A I N - D S N

-> G S : 0 A ; 1 A ; E N D

1 G O T O

-> R D S -> M A I N - D S N

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

selected *

RDS is

selected *

ENTER

ENTER

ENTER

RDS is

selected *

MAIN-DSN is

selected *

ENTER

The ALT-DSN menu is similar
to the MAIN-DSN menu

5.3.14. RDS Menu

Main measurement screen

Page 43

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

-> N E T W O R K >

1 N E T W O R K -> A D R

-> 1 9 2 . 1 6 8 . 0 1 2 . 1 0 3

1 N E T W O R K -> M A S K

-> 2 5 5 . 2 5 5 . 2 5 5 . 0 0 0

1 N E T W O R K -> G W

-> 2 5 5 . 2 5 5 . 2 5 5 . 1 2 7

1 G O T O

-> M A I N -> N E T W O R K

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

NETWORK is

selected *

ENTER

ENTER

5.3.15. Network Menu

Main measurement screen

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Page 44

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

-> C O M >

1 L O C A L C O M S P E E D

-> 1 1 5 2 0 0

1 C O M 1 S P E E D

-> 1 1 5 2 0 0

1 C O M 2 S P E E D

-> 1 1 5 2 0 0

1 L O C A L C O M E C H O

-> O N

1 C O M 1 E C H O

-> O N

1 C O M 2 E C H O

-> O N

1 G O T O

-> M A I N -> C O M

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

selected *

COM is

selected *

ENTER

ENTER

5.3.16. COM Menu

Main measurement screen

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Page 45

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

-> P O W E R S U P P L Y >

1 C U R 1 : 2 1 . 2 A

V O L T 1 : 4 8 . 2 V

1 C U R 2 : 2 1 . 2 A

V O L T 2 : 4 8 . 2 V

1 C U R 3 : 2 1 . 2 A

V O L T 3 : 4 8 . 2 V

1 C U R 4 : 2 1 . 2 A

V O L T 4 : 4 8 . 2 V

1 S T A N D B Y

-> O F F

1 G O T O

-> M A I N -> P O W E R

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

POWER is

selected *

ENTER

ENTER

The number of PSU
varies depending on
the unit type.

5.3.17. Power supply Menu

Main measurement screen

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Page 46

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 7 5 0 W

-> T E M P / F A N >

1 T ° A M B : 3 1 ° C

T ° H E A T : 5 2 ° C

1 F A N 1 : 2 0 0 0 r p m

F A N 2 : 2 0 0 0 r p m

1 M A X A M B

-> 5 0 ° C

1 M A X H E A T

-> 7 0 ° C

1 G O T O

-> M A I N -> T E M P / F A N

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

TEMP/FAN is

selected *

ENTER

ENTER

5.3.18. Temp/Fan Menu

Main measurement screen

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Page 47

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

-> T I M E / D A T E >

1 H H M M D D M M Y Y

1 4 : 0 4 2 3 / 0 6 / 1 1

1 G O T O

-> M A I N -> T I M E / D A T E

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

TIME/DATE is

selected *

ENTER

ENTER

5.3.19. Time/Date Menu

Main measurement screen

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Page 48

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8 . 0 0 M H z 1 0 0 W

-> L I C E N S E >

1 S E R I A L N U M B E R

0 0 0 0 0 0 2 5

1 L A S T K E Y

6 0 B 2 6 2 E 0 0 1 C

1 C U R R E N T L I C E N C E 2 G E N E R A T E K E Y

->

R D S B A S I C , P L A Y E

->

G O

1 E N A B L E L I C . 2 E N T E R K E Y

->

N E W >

->

0 0 0 0 0 0 0 0 0 0 0

1 D I S A B L E L I C . 2 C L E A R K E Y

->

R E M O V E >

->

C L E A R

1 G O T O 1 G O T O

-> M A I N -> L I C E N S E -> L I C E N S E -> R E M .

2 E N T E R K E Y

->

0 0 0 0 0 0 0 0 0 0 0

2 G E N E R A T E K E Y

->

G O

1 G O T O

-> L I C E N S E -> A D D .

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

ENTER

* An arrow appears before
the selected command.

MAIN is

LICENSE is

selected *

ENTER

ENTER

LICENSE is

REM. is

selected *

ENTER

LICENSE is

selected *

ADD. is

selected *

ENTER

ENTER

5.3.20. License Menu

Main measurement screen

Page 49

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

1 0 4 . 0 5 M H z 7 5 0 W

-> A B O U T / S Y S T E M >

1 S Y S T Y P E : H 1 0

S Y S P C A P : 7 5 0 W

1 T X T Y P E : H 1 0

T X P C A P : 7 5 0 W

1 S Y S N A M E

-> S Y S G L T 7 5

1 T X N A M E

-> T X G L T 7 5

1 S O F T R E L L I S T

-> C P U : 0 1 0 0 ; E X C : 0 1

1 S O F T R E L E A S E

0 1 0 0

1 H A R D R E L

0 3

1 C A N I D

-> 1 2

1 D A T E C A L I B

2 3 0 6 2 0 1 1

1 S E R I A L N U M B E R

0 1 2 5 A A 1 1

1 U P T I M E

1 0 2 8 5 H

1 O P T I O N S L I S T

-> G P I O , I P , A U D I O

1 G O T O

-> M A I N -> A B O U T

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

* An arrow appears before
the selected command.

MAIN is

selected *

ABOUT is

selected *

ENTER

ENTER

5.3.21. About / System Menu

Main measurement screen

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Page 50

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

9 8.0 0 M H z 1 0 0 W

-> E A S Y

9 8.0 0 M H z 1 0 0 W

-> E X I T

9 8 . 0 0 M H z 1 0 0 W

||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| ||| |||

ENTER

5.3.22. Easy/Expert Menu

5.3.23. Exit Menu

Main measurement screen

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Page 51

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

5.4. Main parameters description

Parameters are described for the main menus; serial commands are indicated in parenthesis. Possible
values and/or value format are indicated for each parameter.

5.4.1. TX PARAMETERS Menu

These parameters are available as TX and CONF serial commands (see sections 6.2.8 and 6.2.3).

3 DB (TX.3DB)
With this parameter, set the triggering threshold for the 3 dB alarm. Default value is half the transmitter’s

power.

From 0 to 9999 (depending on the transmitter’s power)

MAX VSWR (TX.VSWR.MAX)
With this parameter, set the triggering threshold for the VSWR alarm.

From 0 to 99.9

VSWR TRIP (TX.VSWRTRIP)
With this parameter, enable or disable the reflected power safety (ON or OFF). In case the VSWR is too high

(reflected power greater than the maximum threshold), RF is disabled and automatically starts again. If the
fault is still present, the cut/restart process is repeated 3 times. If the 3rd time, it is still present, the transmitter
is cut for good.

5.4.2. INPUT SWITCH Menu

These parameters are available as INPUT and CONF serial commands (see sections 6.2.5 and 6.2.3), but
are managed differently: the PRIO parameter for each input sets the selection order for the various audio
sources.

MODE

With this parameter, choose whether audio source selection is done manually or automatically. In manual
mode, the user selected audio source is used regardless of the state of the audio source. In auto mode, the
effective audio source depends directly on the switching configuration and on the channels selected as Main
or as Backup (1, 2 or 3).

MANU or AUTO

MAIN

With this parameter, select the main audio source.

LINE1, LINE2, MPX1, MPX2 or GENE

BACKUP 1 / BACKUP 2 / BACKUP 3

With this parameters, select the audio sources which the transmitter will switch to in case of issue.

LINE1, LINE2, MPX1, MPX2 ou GENE

Page 52

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

CROSSFADE (CONF.CROSSFADE) - – read/write
With this parameter, set the crossfade time between channels when switching from one to the next (in
seconds).

From 0 to 25.5 s

LINE 1 or 2 / MPX / PLAYER sub menu

These parameters are available as INPUT.LINE1.SW / INPUT.LINE2.SW / INPUT.MPX.SW /
INPUT.PLAYER.SW serial commands (see section 6.2.5).

THRESHOLD (INPUT.xx.SW.THRESH) – read/write
With this parameter, set the silence threshold level in dBFS on the selected channel.

From -90 to 0 dBFS

SILENCE (INPUT.xx.SW.SILENCE) – read/write
With this parameter, select the channel (L / R / L or R / L and R) on which silence detection must be

performed (not available on the MPX sub-menus).

L, R, ANY or BOTH

DELAY (INPUT.xx.SW.DELAY) – read/write
With this parameters, set the switching delay in seconds when audio loss occurs.

From 1 to 120 s

BACK DELAY (INPUT.xx.SW.BACKDELAY) – read/write
With this parameters, set the delay before returning to the highest priority channel, in seconds.

From 0 to 30 s

5.4.3. Menu LINE 1 (ANA)

These parameters are available as INPUT.LINE1 serial commands (see section 6.2.5).

PRESENCE (INPUT.LINE1.PRESENCE) – read only
This parameter indicates the presence of audio signal at the input: none, left, right or L&R.

NONE, L, R, L&R

LEVEL (INPUT.LINE1.LEVEL) – read/write
This parameter is the max audio peak in dBu that can come from the transmitter on the LINE1 input. For

example, if the audio peak from the source is +6 dBu, this parameter must be set to +6 dBu for optimal
operation. If you do not know the audio source level, you may use an audio analyzer or display first level
measurements on the front panel to read the LINE1 LEVEL. Be aware that if the level is poorly set the
deviation may become too low or too high. This level is also called nominal level, i.e. the level producing the
deviation as set in the Modulation menu.

From -18 dBu to +18 dBu

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Page 53

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

DRIVE (INPUT.LINE1.DRIVE) – read/write
With this parameter, you can slightly compensate the input audio level. It directly affects the final deviation. A

negative value decreases the deviation; a positive value can increase the deviation and/or cause the MPX
hard clipper to be used (if enabled) which in turn may lead to audio distortion. We recommend you leave it at
0 dB.

From -6 dB to +6 dB

RIGHT TRIM (INPUT.LINE1.TRIM) – read/write
With this parameter, you can correct the balance between the Left and Right channels. However, it is better

to look for and correct the cause of a lack of balance (before the transmitter) rather than correcting it at this
stage. A positive value increases the Right channel; a negative value decreases the Right channel level. It is
best to leave it at 0 dB.

From -3 dB to +3 dB

FILTER (INPUT.LINE1.FLT) – read/write
This parameter is crucial: it set the low-pass filter applied on the audio input. The FM bandwidth is limited to

15 kHz, so the filter must be set to 15 kHz for the FM. Digital technology and the quality of the internal
stereo encoder make it possible to set the filter at 16 or 17 kHz while maintaining an acceptable pilot
protection. Select 0 kHz to disable the filter: this solution can be used in mono operation (in stereo operation,
the incidence on the MPX signal and its sub-carrier would be too great) or when a 15 kHz filter is already
used upstream as with an FM processor for instance. In this specific situation, you may also use 2 filters, the
standard 15 kHz standard filter with the external processor, plus the 16 kHz transmitter filter. The listeners
will hear the processor’s filter; the internal filter will take the relay in case of issue with the processor.

0, 15, 16 or 17 kHz

PREACC (INPUT.LINE1.PREAC) – read/write
With this parameter, set the pre-emphasis. Select 0 µs is the audio signal is pre-emphasized before getting

to the transmitter. Otherwise, select according to the country: 50 µs in Europe, 75 µs in the USA.

0, 50 or 75 µs

5.4.4. LINE 2 Menu (AES)

These parameters are available as INPUT.LINE2 serial commands (see section 6.2.5).
They are identical to LINE1 menu parameters, except for the level.

LEVEL (INPUT.LINE2.LEVEL) – read/write
This parameter is the max audio peak in dBu that can come from the transmitter on the LINE2 input. For

example, if the audio peak from the source is -4 dBFS, this parameter must be set to -4 dBFS for optimal
operation. If you do not know the audio source level, you may use an audio analyzer or display first level
measurements on the front panel to read the LINE2 LEVEL. Be aware that if the level is poorly set the
deviation may become too low or too high. This level is also called nominal level, i.e. the level producing the
deviation as set in the Modulation menu.

From -20 dBFS to 0 dBFS

5.4.5. MPX IN Menu

MPX1 or MPX2 Sub-menu

These parameters are available as INPUT.MPX1 / INPUT.MPX2 serial commands (see section 6.2.5).

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TYPE (INPUT.MPXn.TYPE) – read/write
This parameter applies a filter to extract the type of signal needed on the MPXn input. This filtered signal will

become the MPXn channel audio signal. Note that when switching from stereo to mono, the total deviation is
maintained.

MO (mono), ST (stereo), ST+R+S (stereo+RDS+SCA), ST+R (stereo+RDS), RDS, R+S

(RDS+SCA), SCA or NONE

PRESENCE (INPUT.MPXn.PRESENCE) – read only
Indique la composition du signal sur l’entrée MPXn.

MO (mono), MO+R (mono+RDS), MO+R+S (mono+RDS+SCA), ST (stereo), ST+R (stereo+RDS)

ou ST+R+S (stereo+RDS+SCA)

LEVEL (INPUT.MPXn.LEVEL) – read/write
This parameter is the max audio peak in dBu that can come from the transmitter on the MPX input. For

example, if the audio peak from the source is +6 dBu, this parameter must be set to +6 dBu for optimal
operation. If you do not know the audio source level, you may use an audio analyzer or display first level
measurements on the front panel to read the MPXn LEVEL. Be aware that if the level is poorly set the
deviation may become too low or too high. This level is also called nominal level, i.e. the level producing the
deviation as set in the Modulation menu.

From -18 dBu to +18 dBu

DRIVE (INPUT.MPXn.DRIVE) – read/write
With this parameter, you can slightly compensate the input audio level. It directly affects the final deviation. A

negative value decreases the deviation; a positive value can increase the deviation and/or cause the MPX
hard clipper to be used (if enabled) which in turn may lead to audio distortion. We recommend you leave it at
0 dB.

From -6 dB to +6 dB

RMS (INPUT.MPXn.RMS) – read only
This parameter indicates the average value of the transmitted signal’s excursion in kHz.

From -150 to +150 kHz

PEAK (INPUT.MPXn.PEAK) – read only
This parameter indicates the peak value of the transmitted signal’s excursion in kHz.

From -150 to +150 kHz

5.4.6. PLAYER Menu

These parameters are available as INPUT.PLAYER serial commands (see section 6.2.5).
They are identical to LINE2 menu parameters.

5.4.7. AUDIO GENE Menu

The audio generator is a multiplex channel and is therefore not affected by the stereo encoder parameters.
These parameters are available as INPUT.AUDIOGEN serial commands (see section 6.2.5).

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STATE (INPUT.AUDIOGEN.STATE) – read/write
With this parameter, set the type of MPX signal generated by the internal generator.

OFF, PILOT, L, R, L+R (mono) or L-R (stereo)

PREAC (INPUT.AUDIOGEN.PREAC) – read/write
With this parameter, set the pre-emphasis. Select 0 µs is the audio signal is pre-emphasized before getting

to the transmitter. Otherwise, select according to the country: 50 µs in Europe, 75 µs in the USA.

0, 50 or 75 µs

LEVEL (INPUT.AUDIOGEN.LEVEL) – read/write
With this parameter, set the internal generator audio level.

From -100.00 to 12.00 dBFS

FREQ (INPUT.AUDIOGEN.FREQ) – read/write
With this parameter, set the internal generator audio frequency.

From 0 to 100000.00 Hz

5.4.8. MODULATION Menu

These parameters are available as MEAS.DEV and CONF serial commands (see section 6.2.2 and 6.2.3).

RMS (MEAS.DEV.RMS) – read only
This parameter indicates the average value of the transmitted signal’s excursion in kHz.

From -150 to +150 kHz

DEV MPX (CONF.DEV.MPX) – read/write
With this parameter, set the maximum MPX deviation in kHz generated when the audio source is at the

nominal level (the nominal level is set with the LEVEL parameter of the menus: LINE1, LINE2, MPX1 or
MPX2). It is often set at 75 kHz but this value may vary according to the country and relevant regulatory
authorities. To ensure the sub-carrier levels remain stable, this parameter directly changes the audio
deviation.

From 0 to 150.00 kHz

DEV AUDIO (CONF.DEV.AUDIO) – read/write
With this parameter, set the maximum audio deviation in kHz generated when the audio source is at the

nominal level (the nominal level is set with the LEVEL parameter of the menus: LINE1, LINE2, MPX1 or
MPX2). The audio deviation is set automatically when the MPX deviation parameter is set; however, it is
possible to set the audio deviation rather than the MPX deviation. Increasing or decreasing the audio
deviation affects the total deviation and thus automatically adjusts the MPX deviation. Make sure to avoid
overmodulation.

From 0 to 150.00 kHz

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DEV PILOT (CONF.DEV.PILOT) – read/write
With this parameter, set the 19 kHz pilot deviation. For countries modulating at 75 kHz, the pilot deviation

should be 10% of the total deviation, i.e. 7.5 kHz without RDS or 7.1 kHz if RDS is used.

From 0 to 25.5 kHz

DEV RDS (CONF.DEV.RDS) – read/write
With this parameter, set the RDS sub-carrier deviation. The most widely used value is 4 kHz.

From 0 to 25.5 kHz

DEV SCA (CONF.DEV.SCA) – read/write
With this parameter, set the SCA deviation (auxiliary sub-carrier other than RDS), as needed.

From 0 to 25.5 kHz

5.4.9. STEREO ENCODER Menu

These parameters are available as CODER and CONF serial commands (see sections 6.2.6 and 6.2.3).

MO/ST (CODER.MOST) – read/write
With this parameter, set the stereo generator in mono or stereo mode. For mono, there are 3 options: Left

channel broadcast in mono (Mono_L), right channel broadcast in mono (Mono_R), the sum Left+Right
broadcast in mono (Mono). Otherwise left and right channels are broadcasted in stereo.

STEREO, MONO, MONO_L or MONO_R

AUDIO CH (CODER.SELECT.AUDIO) – read only
This parameter indicates the channel used by the modulator for the audio, as set with the INPUT.SELECT

menu.

NONE, AUTO, LINE1, LINE2, MPX1, MPX2 or GENE

PHI 19k (CONF.PHASE.PILOT) – read/write
With this parameter, set the pilot sub-carrier phase. We recommend setting it at 0°.

De -180 à +180°

19k OUT LEVEL (CODER.19KOUT.LEVEL) – read/write
With this parameter, enable/disable the rear panel 19 kHz clock and set its output level. 0=off; between 1

and 7: set a level between 0.9 and 1.1 V peak-to-peak. 5 corresponds to 1 V.

From 0 to 8

5.4.10. RDS / SCA ENCODER Menu

These parameters are available as CODER and serial CONF commands (see sections 6.2.6 and 6.2.3) .
RDS CH (CODER.CURRENT.RDS) – read only
This parameter indicates the channel used by the modulator for the RDS, as set with the RDS IN parameter.

NONE, MPX1, MPX2 or INTERNAL

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RDS STATE (CONF. STATE.RDS) – read/write
With this parameter, enable or disable the RDS. When the RDS is enabled or disabled, the RDS deviation is

automatically subtracted from or added to the audio deviation to maintain the same total deviation.

Off/On

RDS IN (CODER.SELECT.RDS) – read/write
With this parameter, set the RDS component source of the broadcast signal either with an external source or

with the internal encoder.

MPX1, MPX2 or INTERNAL

PHI RDS (CONF.PHASE.RDS) – read/write
With this parameter, set the RDS sub-carrier phase in relation to the pilot sub-carrier. We recommend setting

it at 90°.

From -180 à to180°

SCA STATE (CONF. STATE.SCA) – read/write
With this parameter, enable or disable the SCA. When the SCA is enabled or disabled, the SCA deviation is

automatically subtracted from or added to the audio deviation to maintain the same total deviation.

Off/On

SCA IN (CODER.SELECT.SCA) – read/write
With this parameter, set the SCA component source of the broadcast signal

MPX1 or MPX2

5.4.11. FM LIMITER Menu

These parameters are available as MEAS.DEV and CONF serial commands (see section 6.2.2 and 6.2.3).

CLIP (CONF. DEV.CLIP) – read/write
With this parameter, set the MPX hard clipper to prevent any possibility of overmodulation on the modulator

itself. This process is carried out digitally right before the RF generation, and is therefore enabled on all the
inputs. If the deviation is greater than the configured value (in kHz), the MPX hard clipper is automatically
enabled. Unlike FM limiters/clippers used in audio processing, this clipper cannot be used continuously for it
generates a noticeable audio distortion. It is therefore best to set it at 0, or at the maximum authorized
deviation, plus a few kHz to ensure additional security with the audio processor.

From 0 to 200

5.4.12. RDS Menu

With the Basic RDS option, configure up to 2 DSNs each with a main PSN. Among other things, the DSNs
allow fast and easy changing of the encoder settings remotely.

Note: the RDS is enabled in the RDS/SCA ENCODER menu.
These parameters are available as RDS serial commands (see section 6.2.7).

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PTY code

RDS Programme type (EU)

RBDS Program type (USA)

0

No programme type or undefined

No program type or undefined

1

News

News

2

Current affairs

Information

3

Information

Sports

4

Sport

Talk

5

Education

Rock

6

Drama

Classic Rock

7

Culture

Adult Hits

8

Science

Soft Rock

9

Varied

Top 40

10

Pop Music

Country

11

Rock Music

Oldies

12

M.O.R. Music

Soft

13

Light classical

Nostalgia

14

Serious classical

Jazz

15

Other Music

Classical

16

Weather

Rhythm and Blues

17

Finance

Soft Rhythm and Blues

18

Children’s programmes

Language

19

Social Affairs

Religious Music

20

Religion

Religious Talk

21

Phone In

Personality

22

Travel

Public

CURRENT MAIN (RDS.DSN)
This parameter indicates the current DSN number.

MAIN DSN sub-menu

PI (RDS.MAINDSN.PI) – read/write
With this parameter, set the PI code (Program Identifier) used by RDS receivers to identify the station while

searching for a frequency using AF or EON-AF codes.

4-digit hexadecimal code

PTY (RDS.MAINDSN.PTY) – read/write
With this parameter, set the PTY (Program Type). Select on 32 RDS or RDBS preset codes as given in the

table below.

From 0 to 31

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23

Leisure

College

24

Jazz Music

Unassigned

25

Country Music

Unassigned

26

National Music

Unassigned

27

Oldies Music

Unassigned

28

Folk Music

Unassigned

29

Documentary

Weather

30

Alarm Test

Emergency Test

31

Alarm

Emergency

Mono / Stereo

With / Without

artificial head

Compressed /

non

compressed

static / dynamic

PTY

0

mono

without

non

static

1

mono

without

non

dynamic

2

mono

without

compressed

static

3

mono

without

compressed

dynamic

4

mono

with

non

static

5

mono

with

non

dynamic

6

mono

with

compressed

static

7

mono

with

compressed

dynamic

8

stereo

without

non

static

9

stereo

without

non

dynamic

10

stereo

without

compressed

static

11

stereo

without

compressed

dynamic

12

stereo

with

non

static

PS (RDS.MAINDSN.PS) – read/write
With this parameter, set the PS (Program Station)

8-digit code

MS (RDS.MAINDSN.MS) – read/write
With this parameter, indicate whether the program is Music or Speech to automatically adjust the sound level

of the RDS receiver.

0 (music) or 1 (speech)

DI (RDS.MAINDSN.DI) – read/write
With this parameter, set the DI (Decoder Identification) which enables an RDS receiver’s audio level to be

adjusted according to the type of received audio (mono or stereo, static or dynamic PTY, compressed or not,
with or without artificial head).

From 0 to 15, as indicated in the table below.

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13

stereo

with

non

dynamic

14

stereo

with

compressed

static

15

stereo

with

compressed

dynamic

TA/TP (RDS.MAINDSN.TATP / RDS.MAINDSN.TA / RDS.MAINDSN.TA) – read/write
With this parameter, enable or disable the TA (Traffic Announcement) / TP (Traffic Program). Enabling the

TA instantaneously switches an RDS receiver onto road information reports; at the end of the report, the
receiver will automatically go back to its former operating state. Enabling the TP shows RDS receivers that
the allocated station is likely to broadcast road information. You may enable both the TA and the TP, the TP
only or neither.

TATP, TP or OFF

AF (RDS.MAINDSN.AF) – read/write
With this parameter, set up to 25 alternative frequencies in MHz with the method A. A RDS receiver will shift

to an alternative frequency when the set frequency is no longer properly received.

XX;XX; …;XX

RT (RDS.MAINDSN.RT) – read/write
With this parameter, display and set the radiotext, function which enables text messages to be broadcast in

groups of 64 characters. RDS receiver can only benefit from this function if fitted with a specific display
(home receivers, Smartphone mobile receivers). The RT function cannot be used on car radios as road
safety commissions have forbidden its use on board a vehicle.

GS (RDS.MAINDSN.GS) – read/write
With this parameter, set the group sequence (32 max) which must include at least one group 0A.

XX;XX; …;XX

Parameters of the ALT DSN sub-menu are identical to those of the MAIN DSN sub-menu; for serial
commands, use ALT instead of MAIN.

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6. SERIAL COMMANDS

6.1. Working principle

Helios FM 350 W, Helios FM 750 W, Helios FM 1000 W, Helios FM 1500 W and Helios FM 2000 W have a
serial interface. The physical connection is done using the SUB-D9 (SERIAL MONITOR) on the front panel.
A common computer with an RS 232 interface (example: PC+ Windows + Hyper-Terminal) is all you need to
send commands. The dialog is in text mode (ASCII) and no specific software is required.

Like all serial PC connected equipment, a good cable and correct communication settings are essential to
ensure good communication. The cable must be a straight cable (not crossover), with a female plug to
connect to the PC, and male plug to connect to the unit.

To avoid problems during connection, set the same communication speed and identical settings for both
devices. See figure ‘Port parameters”.

-> 9600

-> 8

-> No Parity

-> 1

-> No Handshaking

bits per second
data bits

Stop bit

The commands make it possible to read the functional parameters (R) or even to edit some of them (W).
To retrieve the value of a functional parameter, simply enter the command name and press the <Enter> key.

Example:

To display the status of the 3 dB alarm, type:

ALARM.3DB

The answer, ON or OFF will indicate the 3 dB alarm is on or not.

To set a parameter, type the command name, the equal sign, the new value and press the <Enter> key.

Example:

To set the transmitter working mode (local or remote), type:

CONF.MODE=LOCAL

The answer: LOCAL will indicate the command has been implemented. In case it has not, the message
ERROR CMD will appear.

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NAME

Access

(R/W)

Possible value on the serial port

of the unit

Comments

LOGIN

R/W

XXXX,X=[0…z] "LOGGED" ou

"NOT LOGGED"

Logs the user and allows them to update
variables if the password is correct. Returns
Logged or not logged

LOGOUT

W

Logs out the user and locks all variables.

SYS.CID

R/W

[0..31]

Unit identifier used by the CAN bus.

SYS.COM1.ECHO

R/W

"ON" or "OFF"

Adds the local echo on the rear panel serial
port

SYS.COM1.SPEED

R/W

9600,19200,38400,57600,115200

Speed of the rear panel serial port 1

SYS.COM2.ECHO

R/W

"ON" or "OFF"

Adds the local echo on the rear panel serial
port

SYS.COM2.SPEED

R/W

9600,19200,38400,57600,115200

Speed of the rear panel serial port 2

SYS.DATE

R/W

DD/MM/YY

Reads and sets the amplifier date

SYS.DATECALIB

R

DDMMYYYY

Date of the last calibration

SYS.GPIO.IN.ACT

R

XX X=[A..F;0..9]

Indicates the corresponding RC when
managed manually (see
SYS.GPIO.IN.MASK)

SYS.GPIO.IN.MASK

R/W

XX X=[A..F;0..9]

Sets the RC control either by the control
board or manually. Hexadecimal code: each
bit corresponds to an input. Ex: A1
(10100001) indicates the RC 1, 6 and 8 are
managed manually

SYS.GPIO.OUT.ACT

R/W

XX X=[A..F;0..9]

Enables the corresponding RM when
managed manually (see
SYS.GPIO.OUT.MASK)

SYS.GPIO.OUT.MASK

R/W

XX X=[A..F;0..9]

Sets the RM control either by the control
board or manually. Hexadecimal code: each
bit corresponds to an input: Ex: 21
(00100001) indicates RM 1 and 6 are
managed manually.

SYS.HARDREL

R

xx.xx.xx x=[0..9]

Hardware version: example "3.0.1"

SYS.IP.ADR

R/W

XXX.XXX.XXX.XXX X=[0…9]

IP address of the optional IP board

SYS.IP.GW

R/W

XXX.XXX.XXX.XXX X=[0…9]

Network gateway of the optional IP board

SYS.IP.MAC

R/W

XX:XX:XX:XX:XX:XX:XX:XX

X=[A..F;0..9]

Mac address of the optional IP board

SYS.IP.MASK

R/W

XXX.XXX.XXX.XXX X=[0…9]

IP mask of the optional IP board

SYS.LCDMENUS

R/W

"NORMAL" or "ADVANCED"

Sets the display type on the front panel
screen

SYS.LOCALCOM.ECHO

R/W

"ON" or "OFF"

Adds the local echo on the front panel serial
port

SYS.LOCALCOM.SPEED

R/W

9600,19200,38400,57600,115200

Speed of the front panel serial port

SYS.LOG

R

SYS.LOG.CLR W

Clears the event list

SYS.NAME

R/W

XXXX X=[A…Z]

Equipment name

SYS.OPT.LIST

R

RF,RC,AIP,TUN,IP,COM,REC

List of implemented options

SYS.PASSWORD

R/W

xxx x=[A..Z;0..9]

Password for the console and front panel
display. ‘NONE’ disables the password

SYS.PASSWORD.RESET

R/W

xxx x=[A..Z;0..9]

Creates a text string to unlock the password
if it has been forgotten

SYS.PCAP R [0..999]

Nominal power of the unit: example
"300"=>300 W

SYS.RAZ W "RAZ"

Reloads NVRAM default values

6.2. Serial commands

6.2.1. System commands

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NAME

Access

(R/W)

Possible value on the serial port

of the unit

Comments

SYS.RST

W

Reset of all parameters.

SYS.RST.CPU W "RST"

General reset of the µc. Sends the return
code: RST

SYS.RST.EXC W

General reset of the exciter

SYS.SN R YYMMXXXX A,M,X=[0..9]

Serial number of the unit: Y => year, M =>
month, X => number

SYS.SOFTREL

R

xx.xx.xx x=[0..9]

Software version: example "3.0.1"

SYS.SOFTREL.LIST

R

xx.xx.xx x=[0..9]

List of the exciter software versions
CPU;DSP;FPGA;IP;EXC;A/IP;TUN

SYS.TIME

R/W

HH:MM:SS

Reads and sets the amplifier time

SYS.TYPE R xxx x=[A..Z;0..9]

Unit type: example "G75" for Goliath 750 W

SYS.UPTIME R [0..99999999]

Indicates the number of working hours since
commissioning

SYS.CIDIP

R/W

[0..31]

Unit identifier used by the IP option CAN bus

SYS.CIDUC

R/W

[0..31]

Unit identifier used by the CAN2 bus.

SYS.KEY.ADD

R/W

ADD

Generates a key to enable the specified
option

SYS.KEY.REM

R/W

REM

Generates a key to disable the specified
option

SYS.RST.EXCHW W "RST"

Material restart of the exciter card

SYS.RST.EXCSW W "RST"

Software restart of the exciter card

NAME

Access

(R/W)

Possible value on the serial

port of the unit

Comments

MEAS.AMB R ±[0..125]

Measures the ambient temperature from 0
to 125°C. "52"=>52°C.

MEAS.DEV.PEAK

R

-150,0…150,0

Gives the peak value for the signal deviation
in kHz

MEAS.DEV.RMS

R

-150.0…150.0

Gives the average value for the signal
deviation in kHz

MEAS.PFWD R [0..9999]

Measure of direct power. examples: "20" or
"300" => 300 W

MEAS.PREF R xxx.x x=[0..9]

Measure of reflected power: "20" => 2 W

MEAS.VSWR

R

XX.X X=[0..9]

VSWR measure "01.0" or "20.0"

MEAS.VSWRTRIP

[0..99]

Gives the number of reflected power safety
in the past hour

NAME

Access

(R/W)

Possible value on the serial

port of the unit

Comments

CONF.10M.OPE

R/W

"AUTO or "MANU"

Indicates the operating mode of the external
10 MHz input

CONF.AMB.MAX

R/W

[0..999]

Sets the triggering threshold for the ambient
temperature alarm

CONF.CROSSFADE

R/W

0 to 25.5

Crossfade between channels (in seconds)

CONF.DEV.AUDIO

R/W

0…150

Sets the audio excursion

CONF.DEV.CLIP

R/W

0 to 200

Set the excursion clipping ; +128 = disabled
limitation

CONF.DEV.LIMIT

R/W

0 to 200

Set the MPX excursion limitation; +128 =
disabled limitation

CONF.DEV.MPX

R/W

00000 à 150.00

Sets the MPX excursion

CONF.DEV.MPXPWR

R/W

-12.7…12.7

Set the MPX power limitation; +128 =
disabled limitation

6.2.2. Measurement commands

6.2.3. Configuration commands

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Page 64

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

NAME

Access

(R/W)

Possible value on the serial

port of the unit

Comments

CONF.DEV.PILOT

R/W

0 to 25.5

Sets the pilot excursion

CONF.DEV.RDS

R/W

0 to 25.5

Sets the RDS excursion

CONF.DEV.SCA

R/W

0 to 25.5

Sets the SCA excursion

CONF.FREQ

R/W

"ON" or "OFF"

Gives the exciter’s working frequency in kHz

CONF.HEAT.MAX

R/W

[0..125]

Sets the triggering threshold for the radiator
1 temperature alarm

CONF.PHASE.PILOT

R/W

-180..+180

Sets the pilot phase

CONF.PHASE.RDS

R/W

-180..+180

Sets the RDS phase

CONF.VSWRTRIP

R/W

"ON" or "OFF"

Enables/disables reflected power safety

NAME

Access

(R/W)

Possible value on the serial

port of the unit

Comments

ALARM.10MSWITCH

R

"ON" or "OFF"

Indicates there was a 10 MHz switch

ALARM.1DB R "ON" or "OFF"

ON =>1 dB Alarm, OFF => => No alarm

ALARM.3DB R "ON" or "OFF"

ON =>3 dB Alarm, OFF => => No alarm

ALARM.AMB R "ON" or "OFF"

ON => ambient alarm, OFF => No alarm.

ALARM.BATLOW

R

"ON" or "OFF"

Indicates if the NVRAM battery’s level is OK

ALARM.CUR1

R

"ON" or "OFF"

Indicates the PSU 1 current is over the max
threshold.

ALARM.FAN1

R

"ON" or "OFF"

Fan 1 alarm; speed is too slow

ALARM.FAN2

R

"ON" or "OFF"

Fan 2 alarm; speed is too slow

ALARM.FAULT

R

"ON" or "OFF"

ON => critical alarm OFF => => No alarm (3
dB, VSWR)

ALARM.HEAT1

R

"ON" or "OFF"

ON => radiator temp alarm, OFF => No
alarm.

ALARM.INPUTSWITCH

R

"ON" or "OFF"

Indicates if the current audio input
corresponds to the highest priority channel

ALARM.LIST R

Returns the list of current alarms in ASCII
format

ALARM.OVDR

R

"ON" or "OFF"

Indicates whether the input power is too
high (ON) or not (OFF)

ALARM.PLL R "ON" or "OFF"

Indicates whether the PLL is locked (OFF)
or unlocked (ON)

ALARM.RDSSWITCH

R

"ON" or "OFF"

Indicates there was a RDS switch (auto
mode only)

ALARM.SUPPLY1

R

"ON" or "OFF"

PSU 1 state

ALARM.TEMP1

R

"ON" or "OFF"

ON => temp alarm (thermocoupler) OFF =>
No alarm

ALARM.VOLT.AUX

R

"ON" or "OFF"

Indicates if auxiliary voltage is offset by
more than 10% of the set value

ALARM.VOLT1

R

"ON" or "OFF"

ON => PSU 1 voltage is offset by more than
10% of the expected value

ALARM.VSWR

R

"ON" or "OFF"

ON => VSWR Alarm, OFF => No VSWR
alarm

ALARM.WARN

R

"ON" or "OFF"

ON =>Internal Alarm (warnings) OFF=> No
alarm. (fan, current, voltage, power supply,
temperature, radiator, ambient temp)

6.2.4. Alarm commands

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Page 65

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

NAME

Access

(R/W)

Possible value on the

serial port of the unit

Comments

INPUT.AUDIOGEN.FREQ1

R/W

0 ~ 100000.00

delta phase = freq audio / 200000

INPUT.AUDIOGEN.FREQ2

R/W

0 ~ 100000.00

delta phase = freq audio / 200000

INPUT.AUDIOGEN.LEVEL1

R/W

-100.00 ~ 12.00

Audio level

INPUT.AUDIOGEN.LEVEL2

R/W

-100.00 ~ 12.00

Audio level

INPUT.AUDIOGEN.PREAC

R/W

"0" or "50" or "75"

Sets the value of the pre-emphasis

INPUT.AUDIOGEN.STATE

R/W

"OFF" or "L" or "R" or "L+R"

or "L-R"

Type of generated MPX signal

INPUT.LINE1.DRIVE

R/W

-6.00 to 6.00

Drive setting, allows an increase of the input audio
level without changing the deviation setting.

INPUT.LINE1.FLT

R/W

"0" or "15" or "16" or "17"

Configuration of the audio filter

INPUT.LINE1.LEFT.PEAK

R

-100 … 28

Gives the left audio input max peak value

INPUT.LINE1.LEFT.RMS

R

-100 … 28

Gives the left audio input average value

INPUT.LINE1.LEVEL

R/W

-20.00...18.00

Internal numerical gain. For AES, between -20 and
0; for ANA between -18 and +18

INPUT.LINE1.PREAC

R/W

0;50;75

Sets the value of the pre-emphasis

INPUT.LINE1.PRESENCE

R

"NONE" or "L" or "R" or

"L&R"

Indicates audio signals are present on input 1

INPUT.LINE1.RIGHT.PEAK

R

-100 … 28

Gives the right audio input max peak value

INPUT.LINE1.RIGHT.RMS

R

-100 … 28

Gives the right audio input average value

INPUT.LINE1.SW.BACKDELA
Y

R/W

XXX=[0…30]

Back delay on the channel with the highest
configurable priority.

INPUT.LINE1.SW.DELAY

R/W

XXX=[1…120]

Switching delay when loss of audio 1

INPUT.LINE1.SW.PRIO

R/W

0..7 ; 0=disabled

Priority of each audio channel (7= highest priority)

INPUT.LINE1.SW.SILENCE

R/W

"L" or "R" or "ANY" or

"BOTH"

Sets on which channel (L,R or L+R) silence
detection must be conducted for the audio input 1

INPUT.LINE1.SW.THRESH

R/W

-90…000

Silence triggering level in dBFS on channel 1

INPUT.LINE1.TRIM

R/W

-3.00 to 3.00

Sets the offset between left and right channels (+3 =
left channel level is 3 dBu higher than right channel
level)

INPUT.LINE1.TYPE

R

"ANA" or "AES" "OFF"

Indicates the type of audio signals present on input
1

INPUT.LINE2.DRIVE

R/W

-6.00 to 6.00

Drive setting, allows an increase of the input audio
level without changing the deviation setting.

INPUT.LINE2.FLT

R/W

0;1;2 0=15;1=16;2=17

Configuration of the audio filter

INPUT.LINE2.LEFT.PEAK

R

-100 … 28

Gives the left audio input max peak value

INPUT.LINE2.LEFT.RMS

R

-100 … 28

Gives the left audio input average value

INPUT.LINE2.LEVEL

R/W

-20.00...18.00

Internal numerical gain. For AES, between -20 and
0; for ANA between -18 and +18

INPUT.LINE2.PREAC

R/W

0;50;75

Sets the value of the pre-emphasis

INPUT.LINE2.PRESENCE

R

"NONE" or "L" or "R" or

"L&R"

Indicates audio signals are present on input 2

INPUT.LINE2.RIGHT.PEAK

R

-100 … 28

Gives the right audio input max peak value

INPUT.LINE2.RIGHT.RMS

R

-100 … 28

Gives the right audio input average value

INPUT.LINE2.SW.BACKDELA
Y

R/W

XXX=[0…30]

Back delay on the channel with the highest
configurable priority.

INPUT.LINE2.SW.DELAY

R/W

XXX=[1…120]

Switching delay when loss of audio 2

INPUT.LINE2.SW.PRIO

R/W

0..7 ; 0=disabled

Priority of each audio channel (7= highest priority)

INPUT.LINE2.SW.SILENCE

R/W

"L" or "R" or "ANY" or

"BOTH"

Sets on which channel (L,R or L+R) silence
detection must be conducted for the audio input 2

INPUT.LINE2.SW.THRESH

R/W

-90…000

Silence triggering level in dBFS on channel 2

INPUT.LINE2.TRIM

R/W

-3.00 to 3.00

Sets the offset between left and right channels (+3 =
left channel level is 3 dBu higher than right channel
level)

INPUT.LINE2.TYPE

R

"ANA" or "AES" "OFF"

Indicates the type of audio signals present on input
2

INPUT.MPX.SW.BACKDELAY

R/W

XXX=[0…30]

Back delay on the channel with the highest
configurable priority.

6.2.5. Input commands

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Page 66

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

NAME

Access

(R/W)

Possible value on the

serial port of the unit

Comments

INPUT.MPX.SW.DELAY

R/W

XXX=[1…120]

Switching delay when loss on the MPX input

INPUT.MPX.SW.THRESH

R/W

-90…000

Silence triggering level in dBFS on MPX 1

INPUT.MPX1.DRIVE

R/W

-6.00 to 6.00

Drive setting, allows an increase of the input audio
level without changing the deviation setting.

INPUT.MPX1.LEVEL

R/W

-18.00...+18.00

Internal numerical gain

INPUT.MPX1.PEAK

R

-150…150

Gives the deviation max peak value of the
transmitted signal in kHz

INPUT.MPX1.PRESENCE

R

MO" or "MO+R" or

"MO+R+S" or "ST" or

"ST+R" or "ST+R+S"

Gives the composition of MPX1 on channel 3. R =
RDS ; MO = Mono ; ST = Stereo ; S = SCA

INPUT.MPX1.RMS

R

-150…150

Gives the deviation average value of the transmitted
signal in kHz

INPUT.MPX1.SW.PRIO

R/W

0..7 ; 0=disabled

Priority of each audio channel (4= highest priority)

INPUT.MPX1.TYPE

R/W

"MO" or "ST" or "ST+R+S" or

"ST+R" or "RDS" or

"RDS+SCA" or "SCA"

Sets the type of signal on the MPX1 input and
applies the corresponding filter

INPUT.MPX2.DRIVE

R/W

-6.00...6.00

Drive setting, allows an increase of the input audio
level without changing the deviation setting.

INPUT.MPX2.LEVEL

R/W

-18.00...+18.00

Internal numerical gain

INPUT.MPX2.PEAK

R

-150…150

Gives the deviation max peak value of the
transmitted signal in kHz

INPUT.MPX2.PRESENCE

R

MO" or "MO+R" or

"MO+R+S" or "ST" or

"ST+R" or "ST+R+S"

Gives the composition of MPX2 on channel 3. R =
RDS ; MO = Mono ; ST = Stereo ; S = SCA

INPUT.MPX2.RMS

R

-150...150

Gives the deviation average value of the transmitted
signal in kHz

INPUT.MPX2.SW.PRIO

R/W

0..7 ; 0=disabled

Priority of each audio channel (4= highest priority)

INPUT.MPX2.TYPE

R/W

"MO" or "ST" or "ST+R+S" or

"ST+R" or "RDS" or

"RDS+SCA" or "SCA"

Sets the type of signal on the MPX1 input and
applies the corresponding filter

INPUT.PLAYER.DRIVE

R/W

-6.00 to 6.00

Drive setting, allows an increase of the input audio
level without changing the deviation setting.

INPUT.PLAYER.FLT

R/W

0;1;2 0=15;1=16;2=17

Configuration of the audio filter

INPUT.PLAYER.LEFT.PEAK

R

-100 … 28

Gives the left audio input max peak value

INPUT.PLAYER.LEFT.RMS

R

-100 … 28

Gives the left audio input average value

INPUT.PLAYER.LEVEL

R/W

-20...0

Internal numerical gain

INPUT.PLAYER.PREAC

R/W

0;50;75

Sets the value of the pre-emphasis

INPUT.PLAYER.PRESENCE

R

OFF or "L" or "R" or "L&R"

Indicates audio signals are present on the player

INPUT.PLAYER.RIGHT.PEAK

R

-100 … 28

Gives the right audio input max peak value

INPUT.PLAYER.RIGHT.RMS

R

-100 … 28

Gives the right audio input average value

INPUT.PLAYER.SAMPLING

R/W

"44" or "48" or "96"

Sampling frequency of the internal player audio
signal

INPUT.PLAYER.SW.BACKDEL
AY

R/W

XXX=[0…30]

Back delay on the channel with the highest
configurable priority.

INPUT.PLAYER.SW.DELAY

R/W

XXX=[1…120]

Switching delay when loss of audio 1

INPUT.PLAYER.SW.PRIO

R/W

0..4 ; 0=disabled

Priority of each audio channel (7= highest priority)

INPUT.PLAYER.SW.SILENCE

R/W

"L" or "R" or "ANY" or

"BOTH"

Sets on which channel (L,R or L+R) silence
detection must be conducted for the audio input 1

INPUT.PLAYER.SW.THRESH

R/W

-90…000

Silence triggering level in dBFS on channel 1

INPUT.PLAYER.TRIM

R/W

-3.00 to 3.00

Sets the offset between left and right channels (+3 =
left channel level is 3 dBu higher than right channel
level)

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Page 67

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

NAME

Access

(R/W)

Possible value on the serial port of

the unit

Comments

CODER.19KOUT.LEVEL

R/W

0…8; 0=OFF

Enables/disables and sets the rear panel
19 kHz level output

CODER.CURRENT.AUDIO

R

"AUTO" or "LINE1" or "LINE2" or

"TUNER" or "MPX1" or "MPX2" or

"TUNER1" or "TUNER2" or "PLAYER"

or "GENE"

Indicates the channel used by the exciter.

CODER.CURRENT.RDS

R

"NONE" or "MPX1" or "MPX2" or

"TUNER1" or "TUNER2" or

"INTERNAL"

Indicates the channel used by the exciter.

CODER.MOST

R/W

"STEREO" or "MONO" or "MONO_L" or

"MONO_R"

Configuration of the audio on MPX
STEREO; MONO;MONO_L

CODER.RDS.BACKUP

R/W

"AUTO or "MANU"

RDS is automatically or manually added
on loss of RDS in MPX

CODER.SELECT.AUDIO

R/W

"AUTO" or "LINE1" or "LINE2" or

"TUNER" or "MPX1" or "MPX2" or

"TUNER1" or "TUNER2" or "PLAYER"

or "GENE"

Imposes a specific input.

CODER.SELECT.RDS

R/W

“OFF” or "MPX1" or "MPX2" or

"TUNER1" or "TUNER2" or

"INTERNAL"

Channel to use, ‘OFF’ disables the RDS

CODER.SELECT.SCA

R/W

“OFF” or "MPX1" or "MPX2" or

"TUNER1" or "TUNER2"

Channel to use, ‘OFF’ disables the SCA

6.2.6. Encoder commands

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Page 68

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

NAME

Access

(R/W)

Possible value on the serial

port of the unit

Comments

RDS.ALTDSN.AF

R/W

XX,…,XX XX=[87.5 ~108.00]

List of alternative frequencies (26 max). Enter frequencies
as 5 character values. Ex: 89.70 or 103.2

RDS.ALTDSN.DI

R/W

0~15

Numerical function that drives an RDS receiver’s audio

stage to adjust audio decoding depending on the type of
audio channel (mono, stereo, ...)

RDS.ALTDSN.GS

R/W

XX;;XX XX=service

Group sequence: 0A => 0, 2A=>4, 10A=>20 (32 max)

RDS.ALTDSN.ID

R/W

X; X=[1…8]

Indicates which DSN sent by UECP is copied to the ALT
memory

RDS.ALTDSN.MS

R/W

"0" or "1"

Numerical flag that automatically modifies the sound level
of an RDS receiver depending on the broadcast program
(1 = music, 0 = speech)

RDS.ALTDSN.PI

R/W

XXXX X=[0..9;A…F]

Enables RDS to identify the station when searching the
frequency using AF or EON-AF code

RDS.ALTDSN.PS

R/W

XXXX X=[0..9;A…Z]

Station name; with 8 characters

RDS.ALTDSN.PTY

R/W

0~31

Program type as set by the RDS standard

RDS.ALTDSN.PTYN

R/W

XXXX X=[0..9;A…Z]

Program type name

RDS.ALTDSN.RT

R/W

X..X ; X=[0..9;A..Z]

radiotext

RDS.ALTDSN.TATP

R/W

"OFF" or "TA" or "TP" or

"TATP"

Enables/disables TA and TP services

RDS.ALTDSN.TIME

R/W

RDS.DSN

R/W

"MAIN" or "ALT"

transmit the DSN 1 or 2 to the exciter

RDS.MAINDSN.AF

R/W

XX,…,XX XX=[87.5 ~108.0]

List of alternative frequencies (26 max). Enter frequencies
as 5 character values. Ex: 89.70 or 103.2

RDS.MAINDSN.DI

R/W

0~15

Numerical function that drives an RDS receiver’s audio
stage to adjust audio decoding depending on the type of
audio channel (mono, stereo, ...)

RDS.MAINDSN.GS

R/W

XX;;XX XX=service

Group sequence: 0A => 0, 2A=>4, 10A=>20 (32 max)

RDS.MAINDSN.ID

R/W

X; X=[1…8]

Indicates which DSN sent by UECP is copied to the MAIN
memory

RDS.MAINDSN.MS

R/W

"0" or "1"

Numerical flag that automatically modifies the sound level
of an RDS receiver depending on the broadcast program
(1 = music, 0 = speech)

RDS.MAINDSN.PI

R/W

XXXX X=[0..9;A…F]

Enables RDS to identify the station when searching the
frequency using AF or EON-AF code

RDS.MAINDSN.PS

R/W

XXXX X=[0..9;A…Z]

Station name; with 8 characters

RDS.MAINDSN.PTY

R/W

0~31

Program type as set by the RDS standard

RDS.MAINDSN.PTYN

R/W

XXXX X=[0..9;A…Z]

Program type name

RDS.MAINDSN.RT

R/W

X..X ; X=[0..9;A..Z]

radiotext

RDS.MAINDSN.TATP

R/W

"OFF" or "TA" or "TP" or

"TATP"

Enables/disables TA and TP services

RDS.MAINDSN.TIME

R/W

6.2.7. RDS commands

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Page 69

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

NAME

Access

(R/W)

Possible value on the serial

port of the unit

Comments

TX.1DB

R/W

[0..9999]

Sets the triggering threshold for the 1 dB alarm. Example "250"
=> 250 W

TX.3DB

R/W

[0..9999]

Sets the triggering threshold for the 3 dB alarm. Example "250"
=> 250 W

TX.3DB.AUTO

R/W

"ON" or "OFF"

If ON set the 3 dB level to TX.PWR/2. If TX.3DB is modified,
switches automatically to OFF

TX.ALARM.1DB

R

"ON" or "OFF"

ON => 1 dB alarm, OFF => No alarm.

TX.ALARM.3DB

R

"ON" or "OFF"

ON => 3 dB alarm, OFF => No alarm.

TX.ALARM.VSWR

R

"ON" or "OFF"

ON => VSWR alarm, OFF => No alarm

TX.ALARM.VSWR
TRIP

R/W

"ON" or "OFF"

Indicates if there has been a VSWR trip default

TX.FAULT R "FAULT" or "OK"

Fault state of transmitter

TX.FREQ

R/W

XXXXXX

Working frequency of the modulator in kHz "232553" =>

232.553 MHz

TX.INTERLOCK

R

"CLOSE" or "OPEN"

State of the safety loop

TX.LINK R "OPEN" or "CLOSE"

State of the CAN bus link

TX.MODE

R

"LOCAL" or "REMOTE"

Single transmitter, indicates the local or remote mode

TX.NAME

R/W

XXXX X=[A…Z]

Transmitter name

TX.OPMODE

R/W

"ON" or "OFF"

Single transmitter control

TX.PCAP R [0..999]

Amplifier nominal power: example "300"=>300W

TX.PFWD R [0..9999]

Measure of direct power. examples: "20" or "300" => 300W

TX.PREF R xxx.x x=[0..9]

Measure of reflected power: "20" => 2W

TX.PWR

R/W

[0..9999]

Sets the output power. From "0" .. "9999"

TX.RFPRESENT

R

"PRES" or "NOT PRES"

Indicates if the single transmitter output power is present

TX.SBY

R/W

"ON" or "OFF"

Enables/disables the standby mode

TX.TYPE R xxx x=[A..Z;0..9]

System type: example "1000-NT" For a 1000 W transmitter
with Nephtys central unit

TX.VSWR R XX.X X=[0..9]

VSWR measure "01.0" or "20.0"

TX.VSWR.MAX

R/W

XX.X X=[0..9]

Sets the triggering threshold for the VSWR alarm. Must be of
type "XXX"."020" => VSWR = 2. Do not use "2" or "1.4".

TX.VSWRTRIP

R/W

"ON" or "OFF"

Enables/disables reflected power safety

TX.WARNING

R

"ON" or "OFF"

Single transmitter. Warning state of single transmitter

6.2.8. Transmitter commands

Page 70

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Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

NAME

Access

(R/W)

Possible value on the

serial port of the unit

Comments

STAT.10M

R

"PRES" or "NOT PRES"

Indicates the presence of an external 10 MHz

STAT.1PPS

R

"LOCK" or "UNLOCK"

Indicates the presence of an external 1 PPS

STAT.ALARMS

R

XXXXXXXX x=[0,1…F]

Returns a 32 bit value indicating current alarms

STAT.CLK

R

"INTERNAL" or

"EXTERNAL"

Indicates the 10 MHz switch position

STAT.CURRENT.IN

R

"1+OPT" or "1+2" or

"2+OPT"

Indicates the channels used for channels 1 and 2

STAT.DCOK1

R

"ON" or "OFF"

Indicates if the PSU 1 of the amplifier is "ON" or
"OFF"

STAT.DCOK2

R

"ON" or "OFF"

Indicates if the PSU 2 of the amplifier is "ON" or
"OFF"

STAT.DCOK3

R

"ON" or "OFF"

Indicates if the PSU 3 of the amplifier is "ON" or
"OFF"

STAT.DCOK4

R

"ON" or "OFF"

Indicates if the PSU 4 of the amplifier is "ON" or
"OFF"

STAT.INTERLOCK.ANTENNA

R

"CLOSE" or "OPEN"

State of the antenna safety loop

STAT.INTERLOCK.LOAD

R

"CLOSE" or "OPEN"

State of the load safety loop

STAT.LINK

R

"OPEN" or "CLOSE"

State of the CAN bus link

STAT.PLL

R

"LOCK" or "UNLOCK"

Indicates the state of the exciter PLL

STAT.SECPIN

R

"ON" or "OFF"

Indicates if the input power is greater than the
hardware threshold

STAT.SECPREF

R

"ON" or "OFF"

Indicates if the reflective protection is enabled

STAT.SECTEMP

R

"ON" or "OFF"

State of the temperature safety

STAT.SWRF

R

"ON" or "OFF"

State of the RF switch

NAME

Access

(R/W)

Possible value on the serial port

of the unit

Comments

CAN

R/W

ID,CMD,DATA ; ID=[0…9];

CMD=[0…FF] DATA=[0..9 ; A…Z]"

Gateway between the serial port and the CAN bus.

ID=recipient’s address; TABLE=table containing the

command; CMD=command number; DATA=parameter
value. The list of tables/commands is available on request.

CAN.SCAN

R/W

Returns the list of units present of the CAN bus.

6.2.9. Status commands

6.2.10. Communication board commands

Commands related to options are only available when the option is present.

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Page 71

Helios FM 350 W/750 W/1000 W/1500 W/2000 W, user manual– 08/2012

6.3. HyperTerminal connection

With Windows 95/98/2000/XP/Vista/7, launch the HyperTerminal:
Start > Programs > Accessories > Communication > HyperTerminal.
The following window appears:

Connection description

Enter the connection name and click OK.
It is recommended to enter the device name you want to contact.

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The next window appears:

Connection

Select the serial port with which you want to connect to the equipment, then click OK.
Enter the port parameters as indicated, and click OK.

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Port settings

You connection has been established, you can directly communicate with the device connected to the serial
port of your computer.

You can launch the commands described in this chapter. Typing the INFO command, the device must
display the following information (connected to a Goliath in this example).

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7. CONFIGURATION WITH THE PC APPLICATION

7.1. Overview

The Ecreso CD includes the Engi application which enables the transmitter’s configuration with a simple
serial connection to a PC.

On the transmitter’s page, click the control interface link to download the zipped file to your PC.

Extract the .exe file. You do not need to install it, simply double-click on ENGI_REV_xxx.exe to launch the
application.

Connect the Helios front or rear panel serial port to a RS-232 port on the PC using a straight cable with a
female connector for the PC and a male connector for the transmitter, or with the IP optional board is present
on the Helios, connect both the transmitter and the PC to the network.

7.2. Using the application

7.2.1. Connection

After launching the application, the connection window pops up.
For a serial connection, select the PC COM port and set the rate at 9600

bauds, and indicate which port is used.
For a remote connection, select TELNET and enter the Helios IP address,

user name and password.
Click the "OK" button.

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When connected, the unit information is automatically updated.

With a serial connection, if the module is password protected, you will need to
enter the password before you can access all the functions.

7.2.2. Configuration

Once connected, click the “Start” button to retrieve RF values and
thresholds on the main page.

These values are also available with the TX Parameters front panel menu
or with the TX and CONF serial commands.

Values that can be set are followed by the button . Click this button
after having updated a value to send it to the transmitter.

A set of buttons give access to other parameters. Click on one of them to
open a window displaying associated parameters.

As long as the application is in “Start” mode, current values are retrieved

for all open windows.

Clicking “Stop” prevents retrieval of data; however, sending data to the

module remains possible.

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Audio input:

These values are also available with the Line 1, Line 2,
MPX and Player front panel menus or with the
INPUT.LINE1, INPUT.LINE2, INPUT.MPX1, INPUT.MPX2
and INPUT.PLAYER serial commands

Modulator:

These values are also available with the Modulation front panel menu or with
the MEAS.DEV and CONF serial commands.

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Static RDS:

These values are also available
with the RDS front panel menu
or with the RDS serial
commands.

Input Switch:

These values are also available with the Select and Input
Switch front panel menus or with the INPUT and CONF
serial commands.

Maintenance:

These values are also available with the TX Parameters and
Temperature/Fan front panel menus or with the STATUS, TX,
MEAS and CONF serial commands.

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Events:

Logs are also available with SYS.LOG serial commands.

System:

These values are also available with the COM Port,
Time/Date and System front panel menus or with the SYS
serial commands.

Alarms:

These values are also available with the Alarms front
panel menu or with the ALARM serial commands.

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Internal Generator:

These values are also available with the Audio Generator front
panel menu or with the INPUT.AUDIOGEN serial commands.

7.2.3. Saving parameters

With the application you may also save parameters,
before upgrading or as a backup for instance.

Select the Files / Save menu.
Select the location and name for the backup file.

Default name is

module_type_serial_number.conf.

To load a previously saved configuration, use the Files /
Load menu.

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8. REMOTE CONTROL AND MONITORING WITH THE GPIO BOARD

8.1. Introduction

This function is available when the optional GPIO board is installed on the transmitter.
It provides an interface between ECRESO transmitters and external systems. The modules are remotely

controlled via “RC” inputs using opto isolators. Working state and alarms are sent to “RM” outputs via relays.

8.2. Description of control and monitoring functions

Control commands work when an impulsion longer than 100 ms is sent to the corresponding input.
There are 8 control functions:

Standby off: turns on the transmitter
Standby on: turns off the transmitter
RF on: enables the RF
RF off: disables the RF
TA on: enables the TA (basic RDS)
TA off: disables the TA (basic RDS)
DSN main: enables the main DSN (basic RDS)
DSN alt: enables the alternative DSN (basic RDS)

Outputs are relays that include a normally closed or normally open contact. When an event occurs in the
unit, the corresponding relay is activated.

Six monitoring functions are associated with relays:

Local: indicates if the unit is in local mode
Default: indicates a transmitter default
Warning: indicates an alarm linked to the internal working of the transmitter (temperature, voltage…)
RF: indicates if the RF is enabled
On: indicates if the transmitter is not in standby mode
Off: indicates if the transmitter is in standby mode
VSWR: indicates if there is a VSWR error

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Function

Remote Control

Input name

Common

STANDBY OFF

RC1

OPT1A(20)

RC_COMMUN(24)

STANDBY ON

RC2

OPT2A(8)

RC_COMMUN(24)

RF ON

RC3

CONF1(21)

RC_COMMUN(24)

RF OFF

RC4

CONF2(9)

RC_COMMUN(24)

TA ON

RC5

CONF3(22)

RC_COMMUN(24)

TA OFF

RC6

CONF4(10)

RC_COMMUN(24)

DSN MAIN

RC7

CONF5(23)

RC_COMMUN(24)

DSN ALT

RC8

CONF6(11)

RC_COMMUN(24)

Event

Remote Monitoring

Output name

Common

LOCAL

RM1

REL_1RT

REL1_C(14)

FAULT

RM2

REL2_RT

REL2_C(15)

WARNING

RM3

REL3_RT

REL3_C(16)

RF (ON/OFF)

RM4

REL4_RT

REL4_C(17)

ON

RM5

REL5_T

REL5_C(6)

OFF

RM6

REL5_R

REL5_C(6)

VSWR

RM7

REL6_RT

REL6_C(7)

Relay

Positions

Contacts

REL_1RT

JUMP2[1 ;2]

NO

REL2_RT

JUMP3[1 ;2]

NO

REL3_RT

JUMP5[1 ;2]

NO

REL4_RT

JUMP1[1 ;2]

NO

REL6_RT

JUMP4[1 ;2]

NO

8.3. Remote control function pinout

Numbers in parenthesis indicated the pin number on the DB25 connector.

8.4. Remote monitoring function pinout

Numbers in parenthesis indicated the pin number on the DB25 connector.

A closed link indicates valid information when configuration is as in the following table.
Default jumper position:

Jumpers from 1 to 5 (JUMP1 to JUMP5): select the NO or NC contact of the relays.

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12 V floating
power supply

DB25 FEMALE

8.5. Physical representation of the GPIOs

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NAME

Access

(R/W)

Serial port

possible value

Comments

SYS.GPIO.IN.ACT

R

XX X=[A..F;0..9]

Indicates the corresponding RC when managed
manually (see SYS.GPIO.IN.MASK)

SYS.GPIO.OUT.ACT

R/W

XX X=[A..F;0..9]

Enables the corresponding RM when managed
manually (see SYS.GPIO.OUT.MASK)

SYS.GPIO.IN.MASK

R/W

XX X=[A..F;0..9]

Sets the RC control either by the control board or
manually. Hexadecimal code: each bit corresponds to
an input. Ex: A1 (10100001) indicates the RC 1, 6 and 8
are managed manually

SYS.GPIO.OUT.MASK

R/W

XX X=[A..F;0..9]

Sets the RM control either by the control board or
manually. Hexadecimal code: each bit corresponds to
an input: Ex: 21 (00100001) indicates RM 1 and 6 are
managed manually.

Remote Control

Binary value

RC1

xxxxxxx1

RC2

xxxxxx1x

RC3

xxxxx1xx

RC4

xxxx1xxx

RC5

xxx1xxxx

RC6

xx1xxxxx

RC7

x1xxxxxx

RC8

1xxxxxxx

Remote Monitoring

Binary value

RM1

xxxxxxx1

RM2

xxxxxx1x

RM3

xxxxx1xx

RM4

xxxx1xxx

RM5

xxx1xxxx

RM6

xx1xxxxx

RM7

x1xxxxxx

8.6. Management using serial commands

A set of commands makes it possible to override the control board to modify specific RC outputs and read
specific RM inputs.

To do so, set the RC you want to control (SYS.GPIO.IN.MASK) and the RM you want information from
(SYS.GPIO.OUT.MASK).

When these commands are used, the control board cannot monitor nor control them.

Serial commands used to configure RC/RM

Remote control binary values:

Remote monitoring binary values:

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Hexadecimal

Binary

0

0000

1

0001

2

0010

3

0011

4

0100

5

0101

6

0110

7

0111

8

1000

9

1001

A

1010

B

1011

C

1100

D

1101

E

1110

F

1111

However, the format of values returned by serial commands is hexadecimal.
You must then convert each 4 digit set as per the following table:

Examples:
If the command

SYS.GPIO.IN.ACT

returns

8A

You must convert the hexadecimal value in binary, ie 8A=10001010, which indicates that RC 2, 4 and 8 are
activated.

To control RM 3 and 5, convert the binary value 00010100: you get 14 as per the above table. You must
then send the command:

SYS.GPIO.OUT.MASK=14

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9. THE EMBEDDED WEBSITE

9.1. Introduction

This function is available with the IP/IO version when the optional TCP/IP board is installed on the
transmitter.

9.2. Connecting to the embedded web site

For remote access, connect to the transmitter’s embedded web site. Simply open a web browser (Google
Chrome, Mozilla Firefox …) and enter the transmitter’s IP address in the address bar (default:

192.168.12.103).

 Though the web application is compatible with most browsers, performances vary greatly from one

browser to another. For this reason, we recommend you use Google Chrome, Mozilla Firefox or install
the Chrome Frame plug-in for Microsoft Internet Explorer

Select the language if necessary.
Enter the user name and password:

Two user levels are available:

Administrator (Admin / admin by default). The administrator has full rights
Guest (Guest / guest by default). The guest has read-only access to all pages except the user

management page.

Check the box to save connection information. This process is managed by the web browser cookies; login
and passwords are saved for 15 days.

The tool bar on top of the page enables access to all pages of the site: the user can view the status, access
receiver configuration and system configuration.

Data can be both viewed and modified.
The indicator on the right enables all connected users to know about current notifications:

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No current notification

A notification has been sent

A notification has been processed

No alarm

Alarm

Unknown status, or element not monitored

9.3. Viewing the Status

This page displays the main parameters of the transmitter (read-only).

LEDs give the status of the alarms:

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Local mode, modifications cannot be saved.

Standard mode, modifications can be saved.

9.4. Configuration

This page displays the main parameters of the transmitter so they can be updated.

When values have been changed, click the button to save the new settings.
If the transmitter is in local mode (green LED), check the Local LED before making changes or you may not

be able to save:

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9.5. System

 Click the Save button to lock in your changes; this is true for every page of the system

configuration.

9.5.1. Product ID

General information regarding the product: name, serial number, versions…
Use the product name and product description to adequately and uniquely describe your unit. They are

useful in a network environment to identify it.
Specifically, these values are sent with SNMP traps.

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9.5.2. Date / Time

 Set system date: the user may update both date (year/month/day) and time

(hour/minute/second).

 Set system time zone:
The user selects the geographical zone from the list. Important to have this set correctly when

using an NTP server.

 Set the time zone UfirstU! Changes in the time zone affect the time that is displayed in the system time

window, so setting the zone first will eliminate the need to set the system time twice!

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9.5.3. Users

This is where web site connection settings can be modified. This page is only visible to administrators.
Two web and software accounts are available:

Administrator (Admin / admin by default). The administrator has full rights
Guest (Guest / guest by default). The guest has read-only access to all pages except the user

management page. The guest can download logs.

Three FTP accounts are available:

Administrator (Admin / admin by default). The administrator has full rights
Update manager (update / maj by default). This account is only used for software updates.
Music (music / music by default). This account is used to manage audio backup files.

 You may change login names but make sure each is unique!
 Only use alphanumerical characters for user names and passwords.

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9.5.4. Network

IP Configuration:

 Static Ethernet configuration
Set the parameters for the network interface.

 DNS Servers: DNS configuration. Mandatory if before using DNS addresses on other

configuration pages.

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9.5.5. Support

With the ‘Reboot TCP/IP option’ button, restart the TCP/IP board.

With the ‘Reboot Transmitter’ button, restart the transmitter’s front panel.

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9.5.6. SNMP Agent

 SNMP configuration
The equipment enables multiple addresses to be configured for SNMP notifications. However, only

the Main Manager has the authority to acknowledge notifications. With “INFORMS” messages,
automatic answers from secondary managers are ignored by the unit.

 MIB: to download the MIB right click on the link and select “Save link as”
 SNMP Traps configuration

 SNMP Notification Type / Trap Community / System Description: trap settings
 Life Sign Trap / Minutes between Life Signs: sends life signs every X minutes. This trap makes it

possible to check that the unit is connected to the network.

 Trap sending test: enables the user to carry out a test according to the trap settings.

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9.5.6.1 Supported SNMP versions

The unit implements an SNMP agent conforming to SNMPv1 and SNMPv2c versions. GET and SET
commands are supported, as well as GETBULK in SNMPv2c. Notifications can be transmitted in TRAP V1 or
V2c form or with an INFORM V2c type.

9.5.6.2 Notification mode

To make sure traps are received by the main recipient, the unit offers 2 methods. With both methods, traps
are sent until they are acknowledged.

 Automatic acknowledgement for sending with INFORM. These notifications are only available

with the version 2c of the protocol. This protocol checks that the manager sends the notification
to the transmitter. This process is simple and reliable, no specific configuration is required for
the manager.

 Manual acknowledgement for Traps V1 and Traps V2c. A specific OID

(“alarmPendingAlarmsalarmAck”) is extracted and its variables are sent with the trap. The

manager must then execute a SET command. This method is more complex but is the only one
that can work with the version 1 of the protocol.

The acknowledgment mode (Trap V1, Trap V2c or Inform) is identical for all alarms. See the next section
“Notifications” for additional settings.

 With “SNMPv2c traps” notifications, it not possible to acknowledge traps.

In the same way, traps which do not require acknowledgment cannot be sent with the “Inform

SNMPv2c” format, even when this format is selected. This is the case with the ‘test’ trap as well as with

equipment information traps such as the ‘Equipment On’ trap.

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9.5.7. Notifications

 SNMP Actions
The user may replay traps that have not been acknowledged yet.
The user may also delete pending traps that have not been acknowledged yet.

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9.5.8. Common traps

Click the arrow next to the trap name to display its parameters.
Set the mode:

Resend until acknowledgement: the trap is regularly sent until acknowledgement.
Send and forget: the trap is sent once, no follow-up is expected.

If “Resend until acknowledgement” is selected, set the time to wait for acknowledgement before resending

the trap (Ack timeout) and the maximum number of times the trap will be resent (Max retries).

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9.5.9. IRT Traps

IRT traps are configured like common traps (see previous section), with 2 additional parameters:

To enable the trap, check "Enabled".
Set the priority; this information which is sent with the traps can be used by an SNMP Manager as

filter criteria for instance.

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9.5.10. Ecreso Traps

Ecreso traps are configured like common traps (see section 9.5.8).

 No trap is sent on automatic audio switch.

9.6. About

This window displays information regarding the web application

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Display the License menu, only visible in Expert mode (first
switch to Expert mode if necessary).

9 8 . 0 0 M H z 1 0 0 W

-> L I C E N S E >

1 S E R I A L N U M B E R

0 0 0 0 0 0 2 5

1 E N A B L E L I C .

->

N E W >

2 G E N E R A T E K E Y

->

G O

1 E N A B L E L I C .

->

P E N D I N G

2 E N T E R K E Y

->

0 0 0 0 0 0 0 0 0 0 0

1 G O T O

-> L I C E N S E -> A D D .

1 C U R R E N T L I C E N C E

->

R D S B A S I C , P L A Y E

Press the “Enter” button and write down the transmitter’s

serial number.

Press the “+” key until you see this screen.

Press the “Enter” button to access the Enable License sub­menu, then press “Enter” again to generate the key for your

transmitter.
Send the serial number and the key to Ecreso.
A new key will be returned to you.

To enter the new key, access the License menu then

access the Enable License screen. The ‘Pending’ state

indicates the transmitter awaits a new key.

Once you have received the new key, press the “Enter”
button to display this screen and press Enter again to
switch to edit mode.

Using the “+” and “–” keys, adjust the value for each digit,

press “Enter” to go to the next digit.

Press the “+” key until you see the Go To screen and select

‘License’ to return to the previous level of menus.

Press the “+” key to access the Current License screen.

The new license should now be part of the list.

APPENDIX A: SOFTWARE OPTION MANAGEMENT

A set of options is available for Helios FM transmitters. Contact your Ecreso dealer if you wish to install one
of them after the initial transmitter purchase.

You will need to retrieve the software activation key from the transmitter and forward to your Ecreso contact.
From this activation key a new key will be created which will unblock the desired option. The last step will be
to send it to the transmitter.

This activation process can be done using the front panel, the PC application or serial commands. Follow the
selected procedure as described below.

A.1. Using the front panel application

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