USER MANUAL EA-946 Modulation Guard
Contents
1. Transfer successfull Download This feature allows you to get the settings of the EA946 back to the windows programme In this way you can check how the EA946 was set or make quick changes on an existing configuration The progressing of the download procedure is shown in the same way as with the upload procedure by means of a progress bar Also is the data verified after downloading and the result shown in the same way as in the upload procedure Help This function shows the Help file which gives a short explanation about the programme Cancel By means of Cancel you can leave the programme without saving the settings which have been made or changed to the Harddisk OK Page 12 By selecting Ok you can leave the programme in a way that also the settings are saved on the Harddisk EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE a ES EET Operational principle After the downloading has been successful or after the RESET switch is pressed the EA946 automatically comes into operational guard mode The AUDIO signal and the external if error detect function is activated control input are being monitored The green LED AUDIO present indicates there is a signal present on the STUDIO input which is above the programmed minimum level If for some reason the signal should drop below this minimum the LED AUDIO present will go out and the LED AUDIO ERROR will2. Error detect function this control input can be used to activate the alarm as if there was no audio present e g to be connected to the no carrier output of a transmitter When the external input is not used we recommend to select the No function possibility Unit In the Unit box you can set the unit number The unit number is in case of an alarm sent over the telephone line by a coresponding amount of DTMF tones at the beginning of the telephone connection The amount of tones allows you to tell the differrence between units when more modulation guards are in use Detection Level Here you can select out of 4 levels threshold of input level at which the EA946 should come into operation Ext Source Control The character of the control output used as START amp STOP signals can be set to be either PULSE or CONTINUOUS closing contacts Miscellaneous In the miscellaneous box you can set if the internal buzzer should operate in an ALARM situation Also you have to set if in an ALARM situation the audio feed to the transmitter has to be automatically diverted to the other AUX source or not AlarmTime To prevent the unit from reacting on any pause in the broadcasted signal a certain period can be set for a silence to be allowed before the system comes into operation after detecting a ERROR The time can be anywhere between 5 and 255 seconds You can make a selection by clicking on the arrow pointing down
3. a service call from the EA946 know of this possibility can recognise such a service call and know how to answer or operate in this case Answering a service call and remote control of the unit is only possible with a telephone which can give tone dialling DTMF tone supported After a fault has been detected for a period of time longer then the ActionTime the EA946 starts dialling the first of the max 5 preprogrammed service telephone numbers If there is no answer within the set Dial interval time it tries the second number in the list The EA946 keeps dialling the numbers in the list until any of the calls is being answered A service call coming from the EA946 can be recognised by an intermitting tone DTMF 1 seperated by a approx 1 sec break The amount of sequential DTMF tones is equal to the identification number set This should be answered by pressing any key on the telephone dial pad If the EA946 has accepted the tone command the intermitting tone which could be heard stops and now the service call is answered You should try to send the command tone in the off time of the receiving intermitting tone coming from the EA946 If the intermitting tone doesn t stop then try to press a key again After the call has been answered in the correct way the EA946 can then be controlled remotely in listening to the connected audio sources rerouting any of these signals to the transmitter controlling the AUX source machine and even
4. force a reset Page 14 EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE TT Il Remote control by means of the telephone dial pad The control commands are existing of a figure DTMF tone and have to be preceded by a The layout and the functions are as follows 1 monitoring studio 3 monitoring AUX source 4 Transmitter line routed to studio 6 Transmitter line routed to AUX source 7 Start AUX source 9 Stop AUX source Break the connection and reset of EA946 when remotely is determined that error is corrected 0 Break the connection without reset of EA946 Reset then has to be perfomed manual in the studio after error is corrected EXAMPLE The AUX source can be monitored by pressing 3 and then if necessary the AUX source can be started with 7 and or stopped with 9 The studiosignal can be monitored by pressing 1 After checking the available audio sources you can select the source feeding the transmitter By pressing 4 the signal coming from the studio is routed to the transmitter and by pressing 6 the AUX source is routed to the transmitter After it has been determined what is the best signal to be transmitted you can disconnect in 2 different ways e g by pressing or pressing 0 By pressing this will reset the EA946 the line will be disconnected and the unit will resume its guarding function The line can also be di
5. only make dial up connections using the TONE DTMF mode Removing a telephone number You can remove a telephone number from the list shown by first selecting the number to be deleted and then selecting the Remove button Selecting a telephone number from the list A telephone number can be added to the Phonenumbers list by first selecting the number you want to add and then selecting the OK button The number selected will be inserted on the position in the Phone list box where you have did select Not all 5 numbers have to be enterred If e g only 2 numbers are used the EA946 will because of the lack of a third possibility automatically return to dialling the first number when a connection has not been established before that time Page 11 EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE EE Function buttons Upload With this feature it is possible to send the settings made in the configuration programme to the EA946 A progress bar as shown below displays the progressing of the upload procedure Progress After uploading the Windows programme checks if the data which has been sent to the EA946 arrived well The progreesing of this check is also dispalyed by means of a progress bar If the check is completed the result is being displayed for 2 seconds to the user The two possible messages are as follows Successfull Transfer failed Try again
6. USER MANUAL Manufacturer Eela audio Het Riet 8a 5431 NM Cuijk The Netherlands Tel 31 485 331182 E mail info eela info Internet www eela audio com EA 946 Modulation Guard Dealer EA 946 MODULATION GUARD INSTRUCTIONS FOR USE ee Contents Fuction Features Instalation Step 1 Step 2 Step 3 Remark Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Install the windows software Remove the windows software General Software settings items Functional options Unit Detection Level Ext Source Control Miscellaneous AlarmTime ActionTime Dial interval Telephone numbers Adding a telephone number Removing a telephone number Selecting a telephone number from the list Function buttons Upload Download Help Cancel OK Operational principle Remote answering a service call coming from the EA 946 Remote control by means of the telephone dial pad Connections EELA AUDIO Het Riet 8 A 5431NM The Netherlands SHHOHDHOHOOONOOAAGAAAARAARARPWO Page 2 EA 946 MODULATION GUARD INSTRUCTIONS FOR USE eee Function The EA946 is meant to monitor the signal going to the transmitter to detect silence in case of a failure in the audio feed There is also an external fault detect input available on the EA946 by means of a DC optocoupler input which can e g monitor a fault signal output of the transmitter no carrier When a fault occurs and the preset ActionTime has passed the EA946 sh
7. a connection has been established An external alarm OUTPUT is available to activate at this stage an external warning sign It is activated when an error occurs and the Alarmtime has passed It is deactivated again when the ActionTime has passed Page 13 EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE eee The EA946 returns to its normal monitoring mode if the studio signal returns or the external error input is not active before the ActionTime has past the flashing LED AUDIO ERROR and or LED EXT ERROR will go out the buzzing will also stop If the EA946 has to return to its normal monitoring mode after the ActionTime has past this can only be done by determining what has caused the unit to become active no audio or external indicated by LED s first take away this cause LED s go out and RESET the unit by pressing the RESET button on the front panel of the unit or by means of the reset possibility over the telephone line The external control input can also be used to disable the guard function of the unit By applying a voltage on this optoisolator input the unit interrupts its function e g by a clock to monitor only certain airtime For this application of the control input the function of this input has to be set to Inhibit Unit in the configuration programme Remote answering a service call coming from the EA 946 Always make sure the persons who could expect
8. all try to contact 1 out of 5 programmed telephone numbers and the AUX SOURCE will be activated and routed to the transmitter After the telephone connection has been established the called person service engineer can control the unit by means of his dial pad DTMF to select monitoring the STUDIO signal or the AUX source signal START or STOP the AUX source and change over the transmitter routing relay from STUDIO to AUX source Features Detection at AUDIO failure and at activating an external optocoupler input Acoustic pre alarm by means of built in buzzer 4 preset No Audio detect levels Unit identification To be configured over external PC with included Windows PC program 5 programmable service telephone numbers Settings are being stored in a non volatile re programmable EEPROM memory Built in Dialler Connection to Telephone lines only over officially approved Telephone line interface such as the EA815 1 Telecom approved or over PABX DTMF remote control possibility monitoring start amp stop external AUX source transmitter routing change over and reset 5 Status led s Start Stop optocoupler outputs Remote alarm optocoupler output External alarm optocoupler input Page 3 EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE a a EY Installation Step 1 Connect the outputs L R of the studio desk or the studio s output rou
9. ard in the list Click on Add Remove Click on Yes at the question if you really want to remove from the system The Windows modulation guard programme is now removed from your system on a safe and correct way Remove Programs From Your Computer Ed unlnstallShield will remove the software Modulation Guard from your computer Please wait while each of the following components is removed Shared program files Standard program files Folder items Program folders Program directories A Ao SS NS OS Program registry entries Page 7 EELA AUDIO Het Riet 8A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE EEN Making preset Before the EA946 can be operational the PC and the enclosed PC configuration programme must be used to enter the service telephone numbers With this programme it is also possible to set the detect level threshold and determine the behaviour of the START amp STOP outputs If the program is started it will give the screen layout as shown below Modulation Guard EA946 Me File Serial port Help ij 8a 2 2 Detect level Unit Phone numbers c C Uni Wek Sii Night Technician Select 033 4562 2234 C 40 dB C Unit2 50 dB C Unit3 Chief enigneer Select 81 67723481 C 60 dB Unit4 JEA946 Expert Select 911 76436201 External contro Miscellaneous Big Boss Select 082 33565703 C C
10. cluded in the delivery to the connector on the unit marked POWER Before you plug the MAINS adaptor in the socket make sure the delivered MAINS adapter is suitable for your local MAINS Voltage and Frequency Now connect the MAINS power supply to the MAINS voltage The ON led at the front of the EA946 will light up to show the unit is in operation and after 3 seconds the internal buzzer will give a short beep to confirm the start up procedure has been successful Step 8 Now install the Windows modulation guard programme in the way it is described in the next chapter Step 9 Set the EA946 in such a way as described in the chapter making presets The EA946 is now ready for use Page 5 EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE EE Install the windows software Before the EA946 can be put into operation the most suitable setup has to be programmed For this the Windows setup programme delivered with the unit has to be installed on a PC first The easiest way to install the Windows modulation guard programme is by following these instructions m Put the floppy disk with the installation programme in the floppydrive m Click on the Windows Start button in the lower lefthand side on the screen m Click on Run E Type in lt Drive gt Setup exe in which the drive in most cases will be Drive A The installation progresses via the so called wizard whe
11. flash This flashing means there is an error detected but the EA946 will not yet take any action If the external ERROR input is activated the LED EXT ERROR will start flashing Also in this case the flashing means that there is an external error detected but the EA946 will not yet take any action If the studio signal remains below the preset level or the external error input is activated longer then the preset AlarmTime the internal buzzer will give when enabled a warning sign If during the ActionTime the studio signal has not returned above the preset minimum level the LED AUDIO ERROR shall be lit permanently and the AUX source will be activated and routed to the transmitter if the option Audio error was enabled in the Error detection box of the configuration program If during the ActionTime the external input still is active the LED EXT ERROR shall be lit permanently and the AUX source will be activated and routed to the transmitter if the option Error detect is selected in the External input function box of the configuration program The LED BACKUP indicates the AUX source is active and routed to the transmitter In both cases the EA946 will after the ActionTime has past try to make contact with any of the max 5 preprogrammed service telephone numbers The LED DIAL will now flash as a sign the EA946 is dialling out trying to make a connection This DIAL LED will be lit constantly if
12. ontinue l Buzzer Select Pulse P Aux source Error detection Alarm time Action time Dial interwal Communicate M Audio error 37 2 E 6 External input function T Upload C No functio i J OK X Cancel Help l Download C Error detect General If you do not have a mouse connected to the PC you can use the keys TAB to jump forwards and lt shift gt TAB to jump backwards to select the right box Items which have a letter underlined can be quickly activated by simultanous pressing the lt ALT gt key and that underlined letter in the requested function These are the so called hot keys When you have the posibility of using a mouse everything can be selected or changed by using the left or right mouse button Page 8 EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE Eee Software settings items Functional options In the Error detection box you can determine on which fault situations the EA946 should react With Audio error selected you want the EA946 to react when the level of the audio signal comes below a selected minimum level The External input can be used for two different facilities e g Extern Error detect and Inhibit unit When selecting the external input to become Inhibit unit control this input can be used to disable the guarding function of the unit e g by a time clock When this external input is set to have an external
13. ransmitter connectors 1 gnd 3 pin XLR Male 2 signal 3 signal Page 17 EELA AUDIO Het Riet 8 A 5431NM The Netherlands
14. re after the Welcoming the user name and company name has to be filled in the directory and map name can be entered where the Windows modulation guard programme has to be installed and where a confirmation is asked to allow the system to start the installation Then the installation begins the progress of the installation can be followed by means of the progress bars Welcome x Welcome to the Modulation Guard Setup program This program will install Modulation Guard on your computer itis strongly recommended that you exit all Windows programs before running this Setup program Click Cancel to quit Setup and then close any programs you have running Click Nextto continue with the Setup program WARNING This program is protected by copyright law and international treaties Unauthorized reproduction or distribution of this program or any portion of it may resultin severe civil and criminal penalties and will be prosecuted to the maximum extent possible under law Cancel Page 6 EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE EEN Remove the windows software If you want to remove the Windows programme from the harddisk the best way to proceed is to follow these instructions Click on the Windows Start button on the lower lefthand side of the screen Click on Settings Click on Control panel Double click on Add Remove programs Select Modulation Gu
15. sconnected by pressing 0 in which case the EA946 wil not reset but will stay e g routed to the AUX source and waiting for a manual reset after the error is corrected Page 15 EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE ee Connections Rear view EA946 Power Connection for MAINS Adaptor 5 pin DIN Female Hybrid I O Connection for EA815 1 PTT approved hybrid 9 pin D sub Female Monitor I O Connecting telephone extension home exchange connector 1 not connected 3 pin XLR Female 2 tel a wire 3 tel b wire RS 232 Connection for PC connector 1 not connected 9 pin D sub Female 2 Tx 3 Rx 5 GND 4 9 not connected RS 232 Connection for EA946 connector 1 not connected 9 pin D sub Female 2 Rx 3 Tx 5 GND 4 9 not connected Page 16 EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE Control Connections for control external AUX source connector 1 gnd 9 pin D sub Female 2 start 3 stop 4 alarm 5 extern error 6 start 7 stop 8 alarm 9 extern error Ext L amp R Connection from EXTernal AUX source connectors 1 gnd 3 pin XLR Female 2 signal 3 signal Studio L amp R Connection from STUDIO connectors 1 gnd 3 pin XLR Female 2 signal 3 signal Out L amp R Connection to T
16. ter what usually goes to the transmitter to the inputs L R at the back of the EA946 marked STUDIO Step 2 Connect the audio signal L R coming from the AUX source to the inputs L R marked EXT Step 3 Connect the outputs of the unit marked OUT L R to the inputs of the transmitter or the line feeding the transmitter Remark Make sure you do not reverse the LEFT and the RIGHT signals Step 4 Connect the START and STOP control outputs to the remote control inputs of the AUX source The START and STOP outputs can be found on the 9 pin D sub connector marked CTL_out at the back of the EA946 Please note the polarity of these optocoupler outputs Step 5 Connect a line coming from a home exchange or PABX to the socket marked MONITOR I O If you want to use a direct outside line you have to use an officially approved Telephone line interface such as the EELA AUDIO EA815 1 PTT approved TELEPHONE HYBRID This can be connected with the for this purpose dedicated 9 pin D sub connector marked HYBRID I O of the EA946 by means of a full wired 1 to 1 D sub cable Step 6 Connect a RS232 cable between the RS232 port of an IBM compatible computer and the 9 pin D sub connector marked PC_port of the EA946 Page 4 For programming connect audiosignal to the EA946 EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE eee Step 7 Connect the 5 pin DIN connector of the Mains adaptor in
17. wards and selecting the required setting from the list which appeares The EA946 starts count down to the Alarm time when a fault occurs If this 6 ring intermitting fault disappeares before the Alarm time has passed the countdown at the next occurring fault will start from scratch EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE EE ActionTime In the Action time box a time has to be set to determine with what delay after the Alarm time the EA946 sends out the service calls after an ERROR has occurred The time can be anywhere between 5 and 255 seconds You can make a selection by clicking on the arrow pointing downwards and selecting the required setting from the list which appeares The elapsed time before the service call goes out by the EA946 thus equals the Alarm Time Action Time Dial interval In the Dial interval box a time can be set to determine the time the unit will keep on ringing one telephone number before when not answered going on to the next The time can be anywhere between 30 and 120 seconds You can make a selection by clicking on the arrow pointing downwards and selecting the required setting from the list which appeares Telephone numbers The 5 telephone numbers have to be selected here which will be tried by the EA946 in sequence after the ActionTime has passed in an ERROR situation The sequence in which the numbers are dailed is from top to bottom If
18. you go for select in the Telephone number box a screen will appear as below Modulation Guard EA946 Phone list Big Boss 082 33565703 Chief enigneer 81 67723481 Day technician 0 34 261 56 455 EA946 Expert 911 76436201 Mr Callback 049 4587120 Night Technician 033 4562 2234 1 Transmitter Technici 00 33 45982106 PO Add Remove Help Within this screen the telephone numbers can be selected and the list can be updated This list can also have more then the 7 telephone numbers in the example gagawipigr selection can be made EELA AUDIO Het Riet 8 A 5431NM The Netherlands EA 946 MODULATION GUARD INSTRUCTIONS FOR USE EE Adding a telephone number By selecting Add a new telephone number can be added to the list which can be used later Add Phonenumber Phonenumber Name l Phonenumber X Cancel A name as well as a telphone number has to be inserted the OK button will not be active until the data is complete After entering a name the TAB key can be used to jump to the field for entering the telephone number The entry can be confirmed with the OK or the lt enter gt key A name automatically is limited to 20 characters a telephone number is limited to 20 digits including the wait signs A sign or a sign will cause a break of approx 5 seconds to wait for e g call progress tones if the EA946 is connected through a home exchange The EA946 can
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