Worldcast Systems Ecreso Series User manual

WorldCast Systems
web: www.worldcastsystems.com - e-mail: [e-mail]
ECRESO FM 100/300 W
User manual
87.5 –108 MHz
FM TRANSMITTER
Date: 2015/06/08
Version: 1.3.0

This device meets the requirements of the applicable European Community Directives.
This device is in the process of being tested for FCC compliance.
This device meets the specification requirements for IC certification.

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TABLE OF CONTENTS
1. INTRODUCTION ............................................................................................................................................7
1.1. About WorldCast Systems ......................................................................................................................... 7
1.2. Before you start ......................................................................................................................................... 8
1.2.1. Safety precautions............................................................................................................................. 8
1.2.2. Factory guarantee ............................................................................................................................. 9
2. DESCRIPTION .............................................................................................................................................. 10
2.1. General description ................................................................................................................................. 10
2.2. Accessories .............................................................................................................................................. 11
2.3. ECRESO FM 100 W Description................................................................................................................ 12
2.3.1. Front panel ...................................................................................................................................... 12
2.3.2. Rear panel ....................................................................................................................................... 13
2.3.3. Opened cover .................................................................................................................................. 14
2.3.4. Synoptic diagram............................................................................................................................. 16
2.3.5. 2U Rack............................................................................................................................................ 16
2.4. Protecting the transmitter....................................................................................................................... 17
2.4.1. Surge Protector ............................................................................................................................... 17
2.4.2. Protection against VSWR................................................................................................................. 17
2.4.3. Protection against high temperature.............................................................................................. 17
2.4.4. Protections incorporated into the PSU ........................................................................................... 18
3. TECHNICAL SPECIFICATIONS ....................................................................................................................... 19
3.1. Environmental ......................................................................................................................................... 19
3.2. Power supply ........................................................................................................................................... 19
3.3. Physical .................................................................................................................................................... 19
3.4. Interface panel......................................................................................................................................... 19
3.5. RF section................................................................................................................................................. 20
3.6. Composite operation ............................................................................................................................... 20
3.7. Stereo operation...................................................................................................................................... 20
3.8. Mono operation....................................................................................................................................... 20
3.9. AF inputs .................................................................................................................................................. 20
3.10.HF output................................................................................................................................................. 21
3.11.Miscellaneous .......................................................................................................................................... 21
4. STARTING UP YOUR TRANSMITTER............................................................................................................. 22
4.1. Connecting the transmitter ..................................................................................................................... 22
4.2. Using the front panel............................................................................................................................... 23
4.2.1. Setting the transmitter.................................................................................................................... 23
4.2.2. Input selection................................................................................................................................. 24
4.2.3. Setting the MPX inputs.................................................................................................................... 25
4.2.4. MPX configuration........................................................................................................................... 26
4.2.5. Setting the analog or AES inputs ..................................................................................................... 27
4.2.6. Getting on air .................................................................................................................................. 27
4.3. Using the PC application .......................................................................................................................... 28
4.3.1. Connecting with the control software application.......................................................................... 28
4.3.2. Setting the transmitter.................................................................................................................... 28
4.3.3. Input selection................................................................................................................................. 28
4.3.4. Setting the MPX inputs.................................................................................................................... 29
4.3.5. MPX configuration........................................................................................................................... 29

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4.3.6. Setting the analog or AES inputs ..................................................................................................... 29
4.3.7. Getting on air .................................................................................................................................. 29
4.4. With the Communication Pack option..................................................................................................... 30
4.4.1. Network configuration .................................................................................................................... 30
4.4.2. Connecting to the web interface..................................................................................................... 30
4.4.3. Configuring the transmitter ............................................................................................................ 31
4.4.4. Getting on air .................................................................................................................................. 31
5. MAIN FUNCTIONS AND PARAMETERS DESCRIPTION .................................................................................. 32
5.1. Overview.................................................................................................................................................. 32
5.2. Local mode............................................................................................................................................... 32
5.3. TX/RF parameters .................................................................................................................................... 33
5.4. Input switch parameters.......................................................................................................................... 34
5.5. Line 1 (ANA) parameters ......................................................................................................................... 36
5.6. Line 2 (AES) parameters........................................................................................................................... 37
5.7. MPX parameters ...................................................................................................................................... 37
5.8. Player parameters (audio backup)........................................................................................................... 38
5.9. Audio generator parameters ................................................................................................................... 39
5.10.Modulation parameters........................................................................................................................... 39
5.11.Stereo Encoder parameters..................................................................................................................... 42
5.12.RDS / SCA encoder parameters ............................................................................................................... 42
5.13.FM limiter parameters............................................................................................................................. 44
5.14.RDS parameters ....................................................................................................................................... 46
5.15.SD card parameters ................................................................................................................................. 49
5.16.Date and Time parameters ...................................................................................................................... 50
5.17.System parameters.................................................................................................................................. 50
6. FRONT SCREEN USE..................................................................................................................................... 51
6.1. Overview.................................................................................................................................................. 51
6.2. Working principle .................................................................................................................................... 51
6.3. Structure of the Ecreso FM menus .......................................................................................................... 53
6.3.1. Overview ......................................................................................................................................... 53
6.3.2. First level measurements ................................................................................................................ 54
6.3.3. First level menus ............................................................................................................................. 55
6.3.4. TX PARAMETERS / RF PARAMETERS Menus.................................................................................... 56
6.3.5. ALARMS Menu................................................................................................................................. 57
6.3.6. INPUT SWITCH Menu ...................................................................................................................... 58
6.3.7. LINE1 Menu ..................................................................................................................................... 59
6.3.8. MPX in Menu................................................................................................................................... 60
6.3.9. Audio Gene Menu ........................................................................................................................... 61
6.3.10.Modulation Menu ........................................................................................................................... 62
6.3.11.Stereo encoder Menu ..................................................................................................................... 63
6.3.12.RDS / SCA encoder Menu ................................................................................................................ 64
6.3.13.FM limiter Menu ............................................................................................................................. 65
6.3.14.RDS Menu........................................................................................................................................ 66
6.3.15.Network Menu ................................................................................................................................ 67
6.3.16.COM Menu ...................................................................................................................................... 68
6.3.17.Power supply Menu ........................................................................................................................ 69
6.3.18.Temp/Fan Menu.............................................................................................................................. 70
6.3.19.Time/Date Menu ............................................................................................................................. 71
6.3.20.License Menu .................................................................................................................................. 72
6.3.21.SD Card Menu ................................................................................................................................. 73
6.3.22.About / System Menu ..................................................................................................................... 74

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6.3.23.Easy/Expert Menu ........................................................................................................................... 75
6.3.24.Exit Menu ........................................................................................................................................ 75
7. SERIAL & TELNET COMMANDS.................................................................................................................... 76
7.1. Working principle .................................................................................................................................... 76
7.2. Ecreso FM and Ecreso FM Amplifier serial commands............................................................................ 78
7.2.1. System commands .......................................................................................................................... 78
7.2.2. Measurement commands ............................................................................................................... 80
7.2.3. Transmitter commands ................................................................................................................... 81
7.2.4. Configuration commands ................................................................................................................ 82
7.2.5. Alarm commands ............................................................................................................................ 84
7.2.6. Input commands ............................................................................................................................. 86
7.2.7. Encoder commands......................................................................................................................... 88
7.2.8. RDS commands................................................................................................................................ 89
7.2.9. Status commands............................................................................................................................ 93
7.2.10.Communication board commands .................................................................................................. 93
7.3. HyperTerminal connection ...................................................................................................................... 94
8. CONFIGURATION WITH THE PC APPLICATION............................................................................................. 97
8.1. Overview.................................................................................................................................................. 97
8.2. Using the application ............................................................................................................................... 97
8.2.1. Connection ...................................................................................................................................... 97
8.2.2. Configuration................................................................................................................................... 98
8.2.3. Saving parameters......................................................................................................................... 104
9. THE EMBEDDED WEBSITE ......................................................................................................................... 105
9.1. Introduction...........................................................................................................................................105
9.2. Connecting to the embedded web site .................................................................................................105
9.3. Viewing the Status ................................................................................................................................. 108
9.3.1. Main status....................................................................................................................................108
9.3.2. Advanced measurements.............................................................................................................. 109
9.4. Transmitter configuration...................................................................................................................... 113
9.4.1. Easy configuration......................................................................................................................... 113
9.4.2. Main configuration........................................................................................................................ 114
9.4.3. Modulation configuration ............................................................................................................. 121
9.4.4. Input Selection .............................................................................................................................. 123
9.4.5. Input Sources................................................................................................................................. 125
9.4.6. Audio backup configuration ..........................................................................................................128
9.5. Setting the RDS data .............................................................................................................................. 129
9.5.1. Static encoder ............................................................................................................................... 129
9.5.2. Dynamic Encoder .......................................................................................................................... 131
9.6. System configuration ............................................................................................................................. 134
9.6.1. Product ID...................................................................................................................................... 134
9.6.2. Product configuration ................................................................................................................... 135
9.6.3. Product Backup ............................................................................................................................. 135
9.6.4. Date / Time.................................................................................................................................... 137
9.6.5. Network......................................................................................................................................... 138
9.6.6. Communication ............................................................................................................................. 139
9.6.7. Users.............................................................................................................................................. 140
9.6.8. SNMP Agent ..................................................................................................................................141
9.6.9. SNMP Manager ............................................................................................................................. 142
9.6.10.IRT Traps........................................................................................................................................ 143
9.6.11.Manufacturer Traps ...................................................................................................................... 144

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9.6.12.System........................................................................................................................................... 145
9.6.13.Advanced Logging ......................................................................................................................... 146
9.7. About ..................................................................................................................................................... 147
9.8. Chatting with other users ...................................................................................................................... 148
10. REMOTE CONTROL AND MONITORING WITH THE GPIO BOARD ............................................................. 149
10.1.Introduction...........................................................................................................................................149
10.2.Standard GPIO board ............................................................................................................................. 149
10.2.1.Description of control and monitoring functions..........................................................................149
10.2.2.Remote control function pinout.................................................................................................... 150
10.2.3.Remote monitoring function pinout ............................................................................................. 150
10.2.4.Physical representation of the GPIOs............................................................................................ 152
10.2.5.Management using serial commands ........................................................................................... 153
10.3.Analog GPIO board ................................................................................................................................ 154
10.3.1.Description of control and monitoring functions..........................................................................154
10.3.2.Remote control function pinout.................................................................................................... 155
10.3.3.Remote analog monitoring function pinout..................................................................................155
10.3.4.Remote monitoring function pinout (relays) ................................................................................ 156
10.3.5.Physical representation of the analog GPIOs ................................................................................157
10.3.6.Management using serial commands ........................................................................................... 158
10.3.7.Specification of the analog GPIO board ........................................................................................ 158
11. EMR ........................................................................................................................................................ 159
11.1.Setting up............................................................................................................................................... 159
11.1.1.Connecting for the first time to EMR ............................................................................................159
11.1.2.Retrieving your account ID ............................................................................................................ 160
11.1.3.Setting up transmitters ................................................................................................................. 160
11.2.Using EMR.............................................................................................................................................. 161
11.2.1.Présentation .................................................................................................................................. 161
11.2.2.Viewing the map ........................................................................................................................... 161
11.2.3.Dashboard ..................................................................................................................................... 162
11.2.4.Reporting.......................................................................................................................................165
11.2.5.Configuration.................................................................................................................................166
APPENDIX A: SOFTWARE OPTION MANAGEMENT........................................................................................ 167
A.1. Using the front panel application ........................................................................................................... 167
A.2. Using the PC application ......................................................................................................................... 168
A.3. Using serial commands ........................................................................................................................... 169
APPENDIX B: ADJUSTING THE IMPEDANCE OF ANALOG INPUTS................................................................... 170
APPENDIX C: MAINTENANCE ........................................................................................................................ 171
C.1. Changing the fuses .................................................................................................................................. 171
C.2. Changing the battery of the control board ............................................................................................. 172
APPENDIX D: TROUBLESHOOTING ................................................................................................................ 173
D.1. Calibration .............................................................................................................................................. 173
D.2. Complete Reset of the Ecreso FM ..........................................................................................................173
APPENDIX E: EMR & SECURITY...................................................................................................................... 174
E.1. Transmitter Notification Protocol ........................................................................................................... 174
E.2. EMR Server Security ................................................................................................................................ 174
FOR MORE INFORMATION............................................................................................................................ 175

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1. INTRODUCTION
1.1. About WorldCast Systems
WorldCast Systems is a highly respected provider of professional, reliable and innovative solutions to the Radio & TV
industry worldwide.
Encompassing the industry-leading brands of APT, Ecreso & Audemat, WorldCast Systems offers high-performing
broadcast systems including audio codecs, FM transmitters and RF signal monitoring designed to meet the needs of
both large international broadcast networks and small private stations alike. WorldCast Systems’ products are
deployed throughout the networks of many major public and commercial broadcasters such as the BBC, ARD, the EBU,
RTE, TDF, RNE, Teracom, RAI, ORF and Clear Channel Radio.
•APT codecs deliver audio over IP, T1, ISDN & Leased Lines. Our award-winning SureStream technology
enables high quality audio transport over cost-effective IP links.
•Ecreso offers highly efficient FM transmitters with extensive inbuilt functionality, highly competitive Total
Cost of Ownership and an industry-leading 10 year warranty.
•Audemat provides a range of professional monitoring and measurement tools for Radio & TV, complemented
by an extensive range of remote control systems for management, configuration and monitoring of broadcast
networks.
Three core values have shaped the growth and direction of WorldCast Systems
1) Product innovation:
WorldCast Systems places a key emphasis on Research & Development and its innovative approach has been
repeatedly recognized by the industry. Our products have been selected to receive awards for innovation at
consecutive NAB Shows for over 13 years.
2) Customer satisfaction:
WorldCast Systems is dedicated to ensuring the best quality, value and service for its customers and has
achieved IS0 9001 certification.
3) Sustainable Development:
WorldCast Systems is committed to sustainable development and demonstrates this commitment in several
ways: all new products are developed in keeping with an eco-design philosophy and built within a low energy
consumption factory and the company has also established Proximité Carbone, a foundation to enable
reforestation.
Headquartered in Bordeaux-Merignac, France, WorldCast Systems employs nearly 100 people worldwide with an R&D
center in Northern Ireland and sales offices in the UK, Germany, India and the US. A global distributor network works
together with our international sales and support staff to offer local assistance to our international customer base.

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1.2. Before you start
1.2.1. Safety precautions
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 operating conditions comply with those recommended in the manual (see
Technical Specifications chapter –3.1, 3.2, 3.5).
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.

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1.2.2. Factory guarantee
WorldCast Systems offers a standard three-year warranty on parts and workmanship from the date the transmitter is
received; this warranty can be extended to five years. WorldCast Systems also offers on compact transmitters of the
range a ten-year warranty.
If precautions listed section 1.2.1 are not followed, the guarantee will be void.
Using multiple captors, a µSD card records operating conditions which allow a precise and quick diagnostic for after
sale services. If missing or if recorded readings show proper operating conditions have not been respected, the factory
guarantee will be void, whether standard or extended depending on the contract subscribed by the client.
In case the client uses the µSD card for the optional audio backup or to retrieve saved configurations;
the EMR directory must never be erased
The µSD card must be quickly placed back in its reader. Absence of readings lasting over one week will lead to
the guarantee being void.
No other µSD card can be used.
In case of destruction of the µSD card, contact the support service as soon as possible.
!Please refer to section 5.15 if you need to remove the µSD card.

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2. DESCRIPTION
2.1. General description
Combining the very latest technologies with our proven RF experience, our FM 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.
Ecreso FM transmitters are fully protected against overheating, VSWR and lightning.
They also offers a number of built in functions that can eliminate the additional cost and space requirements of
external equipment.
Fully featured for local maintenance and configuration, they also allow full remote control by Web server, SNMP,
RS232 or GPIOs (depending on options).
Options available with the current version are:
RDS: the internal RDS encoder makes it possible to manage RDS parameters (PI, PS, TP, TA, PTY, MS, DI, RT,
PTYN, AF, CT) and includes 1 PSN and 2 DSN.
FM limiter: audio processing option with AGC, FM limiter FM and MPX power limiter.
SFN: this option includes a 10 MHz input to synchronize the RF sub-carrier to an external source and an
embedded memory on the digital modulator to configure the delays which will allow to the synchronization
between the various transmitters.
Communication Pack: this software pack includes:
oTCP/IP Connectivity
oWeb Interface for control and monitoring
oAdvanced Measurement Interface (AMI)
oSNMP management
oAudio Backup on µSD card
oTelnet connection
oPreset management
GPIO: this additional board allows remote control and management of your transmitter. Available as
standard or analog board.
Surge protector: added to the chassis to limit the surge caused by lightning
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.

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2.2. Accessories
The ECRESO FM is supplied with:
1 power cable
1 serial cable
2 10 AT fuses
1 interlock plug + locks
1 ground strap
1 folder including 1 CD (documentation + PC application) and 1 quick start notice.

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2.3. ECRESO FM 100 W Description
2.3.1. Front panel
Description of indicator LEDs:
As a rule, green LEDs indicate things are ok, orange LEDs indicate an issue requiring attention, red LEDs indicate a
possible loss of transmission.
CPU: blinks to indicate CPU activity
FAULT: major fault of the unit (3 dB, VSWR or audio fault)
WARNING: minor fault of the unit (ambient temperature, radiator temperature, PSU temperature, fan,
current, voltage, 1 dB, loss of signal, battery low on startup).
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
The transmitter is working properly when: the CPU LED blinks, and both the RF LED and the interlock LED are
green
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

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2.3.2. Rear panel
TCP/IP communication board
2 RS232 ports (COM1 and COM2)
1 µSD card
1 USB port
1 Ethernet port
1 CAN port
1 DIN port
On the TCP/IP board, the COM1 port is used to send serial commands, the COM2 port is used for dynamic PS tags.
The DIN port is used to reprogram the module (only to be used for maintenance).
The µSD card is an external storing device meant to mostly stay in place. Removing and setting it back triggers
error messages visible on the embedded web site; it should therefore only be done during maintenance operation
procedures. See section 5.15 for the µSD card removal procedure.
* The optional RF metering board measures the power on modular systems (1 ECRESO FM + several amplifiers FM).
The values for the direct power and the forward power can be retrieved in the TX menu on the front panel or with the
serial commands TX.PFWD and TX.PREF.
** The safety loops must be closed to ensure the transmitter will work. If nothing is connected to these connectors,
interlock plugs must be present to close the loop.
Forward power
Reflected power
3 dB fault
VSWR fault
The board is detected and in
normal use
Mains
Communication board
Interlock **
GPIO slot
(option)
Ground
MPX/SCA1
MPX/SCA2
19 kHz
Audio input Line1
(Ana or AES)
Audio input Line2
(Ana or AES)
N RF output
RF metering board
(option) *

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2.3.3. Opened cover
Low voltage
power bloc
Mains
filter
Optional GPIO
board
Optional
communication
board
RF amplifier
bloc
Control board
Digital
modulator
High output
power supply
Audio inputs
Optional surge
protector
Optional RF
Probe
Fan

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Control board
IP board
JP4 –JP5: jumpers are present.
JP6 –JP7 –JP8: no jumpers.
These jumpers make it possible to set the starting mode. Factory settings –do not modify.
JP8, JP5, JP4, JP6
and JP7

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2.3.4. Synoptic diagram
On transmitters, as standard:
Line 1 is an analog audio input (Left and Right)
Line 2 is a digital input (AES, 1 connector)
For an analog mono signal, use the left channel (Mono); for a digital mono signal
use the AES input.
Line 1 is not necessarily the main audio channel. Depending on the desired
configuration, use Line 2 or MPX inputs as the main audio source (see section
5.3).
!Do not inject a digital signal on L and R channels, or an analog signal on
the AES channel!
2.3.5. 2U 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.

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2.4. Protecting the transmitter
To ensure the transmitter will work with no risk of damage, a series of protections has 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 WorldCast Systems 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.
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. The protection is triggered in case of an overshoot of the reflected power over:
Transmitter power
100 W
300 W
750 W
1000 W
1500 W
2000 W
Threshold
20 W
25 W
50 W
55 W
90 W
90 W
Software protection:
The software protection prevents the transmitter to reach a given reflected power value by blocking the
control or by lowering the power.
Transmitter power
100 W
300 W
750 W
1000 W
1500 W
2000 W
Threshold
15 W
20 W
40 W
45 W
80 W
80 W
Software settings for the reflected power security management: if the VSWR is greater than 3 in a recurring
way, enabling the VSWR Trip parameter allows disabling then cutting the RF (see VSWR Trip, section 5.3).
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 6.3.18 or serial command
CONF.AMB.MAX, section 7.2.4), 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 7.2.4),
default value is 65°C for transmitters from 750 to 1000 W, 70°C for 1500 W transmitters and 80°C for 2000 W
transmitters. In case of overshoot, a Warning alarm is triggered (Alarm Heat).
The max internal temperature is set at 70°C for transmitters from 20 to 1000 W, 70°C for 1500 W transmitters
and 80°C for 2000 W transmitters. If the temperature exceeds 70°C, the RF is cut off and a fault alarm is
triggered (Alarm Temp).

ECRESO FM 100/300 W, user manual–06/2015
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Tel [phone] –Fax [phone] –www.worldcastsystems.com –[e-mail]
2.4.4. Protections incorporated into the PSU
All Ecreso FM and Ecreso FM Amplifier module from 300 to 2000 W have an auxiliary power block and a power block,
each having its own protections:
Against overloads: protects by limiting the current. For auxiliary power supplies, it is a protection against
shorts circuits.
Against overvoltage.
Against high temperatures (see previous section).
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).
For both power supplies, we are monitoring the output voltage (DC); the input is not monitored.
The current is also measured and monitored. The threshold varies depending of the power of the Ecreso FM: 10 A for
the Ecreso FM 100 W, 10 A for the Ecreso FM 300 W, 23 A for the Ecreso FM 750 W, 29 A for the Ecreso FM 1000 W,
26 A per amplifier pallet for the Ecreso FM 1500 W, 31 A per amplifier pallet for the Ecreso FM 2000 W. In case of
overshoot, a Warning alarm is triggered (Alarm Cur) and the nominal power is reduced.

ECRESO FM 100/300 W, user manual–06/2015
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Head Office : Parc d’activites Kennedy - 20, avenue Neil Armstrong –33700 Bordeaux-Merignac (France)
Tel [phone] –Fax [phone] –www.worldcastsystems.com –[e-mail]
3. TECHNICAL SPECIFICATIONS
3.1. Environmental
Nominal operating temperature 5°C to 45°C
Maximum operating temperature 0°C to 50°C
Warehousing temperature -20°C to +70°C
Humidity 5 - 95 % non-condensing relative humidity
Altitude Up to 3900 m
Warehousing time < 10 years
Cooling Ecreso FM 100W / 300W 1 fan: between 10 l/s and 30 l/s depending on ambient temperature
3.2. Power supply
Voltage 100 VAC to 254 VAC
Frequency 47 Hz - 63 Hz
Max consumption 200 W for the Ecreso FM 100W
500 W for the Ecreso FM 300W
Power factor > 0.9
Fuses 10 AT
3.3. Physical
Overall dimension 487.5 mm X 2U (89 mm) X 475 mm
Rack size without front panel 437.7 X 82 X 443.8 mm (WxHxD)
Enclosure depth required 600 mm
Mounting 19’’enclosure, with 4 M6X12 screws
Weight
Ecreso FM 100W around 9 kg
Ecreso FM 300W around 9.5 kg
3.4. Interface panel
Indicators Green LED: CPU activity
Red LED: major fault
Yellow LED: minor fault
Red LED: RF fault (3 dB)
Red LED: VSWR fault
Green LED: safety interlock
Green LED: RF on
Yellow LED: local mode

ECRESO FM 100/300 W, user manual–06/2015
Page 20
Head Office : Parc d’activites Kennedy - 20, avenue Neil Armstrong –33700 Bordeaux-Merignac (France)
Tel [phone] –Fax [phone] –www.worldcastsystems.com –[e-mail]
Screens Back lighted LCD: displays operating parameters and menus.
Buttons RF, local, +, -- and OK
3.5. RF section
Frequency range 87.5 to 108 MHz
Summary of different steps 10 kHz
Frequency stability < 10-6 per year
Power range 0-100 W or 30-300 W
Power output continuously 0-100 W or 0-300 W
VSWR < 1.35
Optimal performance: < 1.1
Spurious and harmonic suppression > 75 dBc
10 MHz input recommended range -10 dBm to +10 dBm
3.6. 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)
3.7. 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
3.8. 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
3.9. AF inputs
Analog (LINE1)
Connector "XLR" type