Fm radio 4-band broadcast audio processor with rds/rbds encoder (4 pages)
Summary of Contents for DEVA Broadcast DB6400
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MAINTENANCE AND OPERATION INSTRUCTION MANUAL DB6400 Advanced FM and Digital Radio 4-Band Audio Processor with Backup Audio Player Publish Date: 07-Jun-2016...
E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com Introduction DEVA Broadcast Ltd. is an international communications and high-technology manufacturing organization, its corporate headquarters and facility located in Burgas, Bulgaria. The company serves the broadcast and corporate markets worldwide – from consumers and small businesses to the largest global organizations.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com Typographic conventions This manual uses the following typographic conventions: Style Used for NOTE Important notes and recommendations Example Used when example text is cited 0 dB Menu element value “Menu”...
FM Limiter with advanced distortion & pre-emphasis control and HD Lookahead Limiter. Another feature that distinguishes the DB6400 from other products of its category is its Fallback function. This cutting-edge device is able to detect signal loss. In the case of silence at the main audio input, it automatically switches over to a backup source, thus ensuring a constant audio feed.
E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com Front Panel OLED DISPLAY DB6400 has easy to read, high-resolution OLED graphical display that visualizes all measurements of the received signal and DB6400’s settings. LED METERS The full-time LED meters allow quick and easy monitoring of the metering, making the setup, adjustment and programming easy.
The servicing of electronic equipment should be performed only by qualified personnel; • Before removing the covers DB6400 must be switched off and the mains cable unplugged; • When the equipment is open, the power supply capacitors should be discharged using a suitable resistor;...
For normal operation of DB6400, we recommend following the instructions listed below. • Install the unit in places with good air conditioning. DB6400 is designed to operate within the ambient temperature range of 10° to 50°C. The equipment rack should be ventilated in order for the device to keep its internal temperature below the maximum ambient temperatures;...
Upon receipt, the equipment should be inspected for possible shipping damages. If such are found or suspected, notify the carrier at once and contact DEVA Broadcast Ltd. The original shipping carton box and packing materials should be kept for possible reuse, in case of return for Warranty repair, for example.
Mounting RACK REQUIREMENTS The DB6400 mounts in a standard 19-inch equipment rack and requires only 1¾ inches (1U) of vertical rack space. In order the painted finish around the mounting holes to be protected, the use of plastic washers is recommended.
- 100 - 240 VAC - 1 Amp Fuse CAUTION: Permanent damage will result if improper AC supply voltage is applied to DB6400 device. Your warranty does not cover damages caused by applying improper supply voltage, or use of an improper fuse.
E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com DB6400 Location The best location for DB6400 is as near as possible to the transmitter, so that its stereo encoder output can be linked to the transmitter through a circuit path. It is mandatory that the cable used for connection between DB6400’s MPX output, and the MPX input of the transmitter be as short as...
Basic Setup/Connection Example REFERENCING ANALOG AND DIGITAL INPUTS LEVEL In order for the proper work of DB6400 to be guaranteed, and due to the variability of the signal levels, the right reference levels of the digital and analog inputs should be set.
Level, the output Ref. Level determines the amplitude of the respective output, which corresponds to 0dBFS. The value is set depending on the level requirements of the device connected to DB6400’s digital output. Having the proper Ref. level set at the output of the audio processor, guarantees that the signal amplitude at the input of the subsequently connected device will be within the required optimal range.
MPX input. The audio processor output used is MPX OUT -1. IMPORTANT RECOMMENDATION: It is mandatory that the cable used for connection between DB6400’s MPX output, and the MPX input of the transmitter be as short as possible. This will prevent any face distortion. - 25 -...
MPX input. The audio processor output used is MPX OUT -1. IMPORTANT RECOMMENDATION: It is mandatory that the cable used for connection between DB6400’s MPX output, and the MPX input of the transmitter be as short as possible. This will prevent any face distortion. - 26 -...
MPX OUTPUT – 1 (for the main program) and MPX OUTPUT – 2 (for the standby/ second frequency). IMPORTANT RECOMMENDATION: It is mandatory that the cable used for connection between DB6400’s MPX output, and the MPX input of the transmitter be as short as possible. This will prevent any face distortion. - 27 -...
MPX OUT-2. IMPORTANT RECOMMENDATION: It is mandatory that the cable used for connection between DB6400’s MPX output, and the MPX input of the transmitter be as short as possible. This will prevent any face distortion. - 28 -...
E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com Loop through The output of the DB6400 is wired directly to the PILOT/MPX IN of the SmartGen 6.0. The output of the RDS encoder will be connected to the composite/MPX input of the FM transmitter. This connection is not recommended, because the composite signal/MPX passes through the RDS encoder, and the transmission of the program will be interrupted in case of failure of the RDS encoder.
- SYNC LOCK. If and due to some reason the external sync source has been loss, the indication will change to SYNC UNLOCK and start blinking. Then, the DB6400 will switch to the internal sync source. For further information, please refer to “Output”...
Navigation Buttons [UP], [DOWN], [LEFT], [RIGHT] and [OK] buttons are used to navigate through the menus, for selecting various functions and parameters of DB6400. The Main Menu structure has an up- and-down basis, expanded with left-to-right branches. - 31 -...
[Presets] The DB6400 has an extensive set of factory presets and provision of 20 user ones. In order for a preset to be used, navigate to the desired preset and press the soft button labeled [Load], then [OK] and the preset will be loaded.
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65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com Quick access to the most important status and audio parameters is also available via the [UP] and [DOWN] Arrows keys. Pressing the [UP] key will visualize the following screens: Processing parameters, represented as bar graphs.
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65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com Right Input level (dBFS), represented as graph. AGC GR (dB), represented as graph. Stereo Width(%), represented as graph. - 34 -...
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65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com Output Left level(dBFS), represented as graph. Output Right level(dBFS), represented as graph. MPX Deviation (%), represented as graph. - 35 -...
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65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com MPX Power (dBr), represented as graph. HF Limiter GR (dB), represented as graph. ST Limiter GR (%), represented as graph. - 36 -...
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65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com HD Limiter GB (dB), represented as graph. FM Limiter GR (dB), represented as graph. RDS Screen - 37 -...
E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com Settings All the needed settings to the DB6400 as regards the Security, Dayparting, Communication, Trigger ports and Device are applied through this menu. From the same section the username and password for the WEB interface access can also be changed.
If you do not manage to unlock the front panel with the default password, nevertheless whether it has been changed intentionally or not, DB6400 should be returned to its factory defaults in order for the password security to be disabled.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com This menu allows you to turn On or Off the RDS Encoder and set the RDS Level. Also, all basic elements of the RDS/RBDS are gathered in this menu – PI, PS, RT, TA/TP and etc. A list of alternative frequencies is also available.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com Other sections STEREO All needed settings in order for your station to be broadcasted in stereo are applied through here, thus allowing more natural distribution of the sound. STATUS Information on the device’s status, IP address, etc.
Factory and User presets FACTORY PRESETS The DB6400 has an extensive set of factory presets and provision of 20 user ones. In order for a preset to be selected/used, navigate to the desired preset and press the soft button labeled [Load], and then [OK].
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65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com 3. Once you have finished with the creation of your customized sound/preset, go back to the Presets page and find the modified preset. An symbol indicating that some changes are being made will appear.
E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com WEB Interface DB6400 is also controlled through a built-in web server. A standard web browser can be used to monitor its status or to make some adjustments. There are two options for access to the WEB Interface of DB6400: •...
ACCESS DB6400 provides you with a protected access to the device settings. You can choose between two types of log in: 1. As an ADMINISTRATOR – it will give you full control over the settings (username: admin, password: pass);...
The Status Screen shows all mandatory parameters represented as LED readings, just as the ones placed on the front panel of DB6400. The LEDs sequence is as per the processing path. In order for DB6400.’s processing powers to be evaluated, and the difference between the processed and raw signal to be clearly heard, there is an incorporated [Bypass] option in the form of a button.
• locked. In order for the security of DB6400 to be enhanced, new username and password could be set from the Security section. By choice, you can change the name of the device (General section). Later on, it will be used as a title name on all WEB pages.
DHCP client to be activated, the function should be enabled. When the DHCP client is activated, all assigned values will be shown in the relevant fields on the “Status Screen”. If due to any reason, the DHCP procedure cannot be completed, DB6400 will use Auto IP and will generate an IP Address.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com HTTP Server Enable/Disable the HTTP Server. Specify the Server Port and Session Timeout. FTP Server Enable/Disable the FTP Server. Specify the Command and Data Ports to be used. Syslog Enable or disable the Syslog feature.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com Dayparts Dayparting is the practice of dividing the day into several parts, during which a different type of audio preset to be used for the audio processing. This function will allow a processing pattern based on the radio’s timetable to be made.
[Retain IP] – all settings except for the Network settings (IP address) will be deleted. To restore DB6400 to its Factory Defaults you should first select the desired option and then press the relevant button. A new window will appear - confirm that you want to restore the factory defaults and wait for the process to be completed.
E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com PRESETS The DB6400 has a set of 17 factory presets and provision of 10 user ones. A preset contains all the audio processing path parameters that can be changed in the following tabs – AGC, EQ, Enhancer, Multiband 1, Multiband 2, and Final Limiter.
As many of the stations prefer to use the services of qualified personnel when creating the perfect preset, the DB6400 supports the function the newly created preset to be locked. The preset can be locked upon its export. The following options are available: Key –...
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com Presets Import 1. Press the [Import] button on the desired position. The following message box will appear: 2. Browse the file to be imported and specify Key if it has been locked. Then press [OK] to continue;...
Input gain. Fallback – DB6400 supports up to 3 fallback sources. In order for a source to be used a backup should be specified. The following options are available - Main Analog, AUX Analog, Main Digital, AUX Digital, IP Audio Client, MP3 Player.
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Audio (no sub-folders are allowed). The folder should be located in the root of the SD Card. The playlist file must be named playlist.m3u. For information on how the connection between the DB6400 and an FTP Client should be configured, please refer to “APPENDIX B”...
The first processing stage is the AGC. It works across a large band of frequencies, and is intended to normalize the difference in the audio levels fed at DB6400’s input. The AGC effectively reduces the volume if the signal is strong and raises it when it is weaker. Having the task is to even out the variances and to create a consistent performance, the AGC has influence over all the subsequent processes.
E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com EQUALIZER DB6400 has four separate sections of ‘parametric’ equalization, which can be attributed to any combination of Freq (frequency), Q Factor (bandwidth) and Gain (amplitude). These may be assigned to any combination of low frequency EQ, mid-band EQ and top-end EQ chores. However, all four sections are identical and each of them may be programmed in frequency between 50 Hz and 15 kHz.
Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com ENHANCER The DB6400 is equipped with real stereo enhancer intended to improve the existing stereo image. However, bear in mind that it will not create stereo from mono sources. Stereo Enhancer can be either turned [On] or [Off].
The settings to be applied are identical for some of the subsections and are described in details below. Gate – When the audio drops below this user defined threshold limit, the DB6400 will freeze operation band. When the signal is too low, this function will limit the floor noise. Fidelity –...
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65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com Sound impact – As explained, this option keeps the original authenticity of the sound attacks (peaks). Pay attention when using the Sound Impact with value bigger than 6dB, as the average power of the sound will be significantly increased.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com MULTIBAND 2 (MULTIBAND LIMITER) Multiband 2 (Multiband Limiter) is intended to prepare the processed audio for the final limiter. The applicable settings for each band have been simplified so as not to complicate the process with useless parameters.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com FINAL LIMITER Stereo Limiter – set the stereo image reduction percentage required, compared with the maximum rate of 100%. If you are already using the Stereo Enhancer, we recommend you use a percentage value between 10 and 15%.
MPX Limiter adjustable from 0dB to 10dB via the interactive slider. RDS Encoder – The DB6400 has a built-in RDS generator which, depending on your preferences can be [Enabled ]or [Disabled]. The RDS subcarrier level can also be changed. Output –...
United States the PI code is numerically calculated from the station’s call sign. We have provided a calculator utility within the DB6400. An in-depth discussion of the mathematical calculation is given in RDS/RBDS Standard.
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65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com PTY (Program Type) – The PTY data flag identifies the station format from a pre-defined categories. Many RDS receivers are able to seek the listener’s preferred format automatically. This means that a car radio can switch from a fading station to a stronger one that carries the same variety of music, though not the very same program, as provided by AF switching.
External synchronization is chosen, Sync loss s.r. and Sync tout should be set in order for possible loss of the audio at the digital output to be prevented. If such is present, the DB6400 will switch to internal synchronization (the value being specified in Sync loss s.r.) after the defined Sync Timeout expires.
A. Equipment will not be accepted for Warranty or other repair without a Return Authorization (RA) number issued by DEVA Broadcast Ltd. prior to its return. An RA number may be obtained by calling the factory. The number should be prominently marked on the outside of the shipping carton.
Your signature* *Signing this warranty registration form you are stating that all the information provided to DEVA Broadcast Ltd. are truth and correct. DEVA Broadcast Ltd. declines any responsibility for the provided information that could result in an immediate loss of warranty for the above specified product(s).
For this, the reader is directed to the Specification appropriate to his location either the CENELEC EN50067 Specification for Europe or the United States NRSC Specification. Since the Manual will deal with specific implication of RDS implemented with the DB6400, it is assumed that the user is familiar with the RDS concept.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com APPENDIX B HOW SHOULD I CONFIGURE THE CONNECTION BETWEEN MY DEVA DEVICE AND AN FTP CLIENT? In order for a connection to be established the following setting should be applied: 1.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com 3. Example of FTP Client (FileZilla) Settings In some cases, FileZilla’s “Quick connect” feature is not able to connect with the DEVA unit. That is why we recommend the device to be assigned in the program manually.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com APPENDIX C.1 PTY Code Description Used in RBDS Mode – North America Short Name Description News News reports, either local or network in origin. Information Programming that is intended to impart advice.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria Tel: +359 56 820027, Fax: +359 56 836700 E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com APPENDIX C.2 PTY Code Description Used in RDS Mode – Europe, Asia PTY Short Name Description News Short accounts of facts, events and publicly expressed views, reportage and actuality. Current affairs Topical program expanding or enlarging upon the news, generally in different presentation style or concept, including debate, or analysis.
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