Warsanis 1401FM User manual
Contents
1. BASEBAND COMPOSITE OUTPUTS The Warsanis 1401FM has two unbalanced composite outputs on two BNC connectors on the rear side of the unit Jumpers are provided for Oohm or 75ohm impedance BASEBAND COMPOSITE OUTPUT LEVELS On the rear side of the Warsanis 1401FM you can adjust the output levels of the two stereo analog baseband composite outputs Each of the two outputs can be separately adjusted WARSANIS 1401 FM USER MANUAL CHANGING THE COMPOSITE OUTPUT IMPEDANCE The Warsanis 1401FM is shipped with a composite output impedance op Oohm This is the common impedance for most situations If a 75ohm output impedance is required you have to change two jumpers on the Stereo Generator PCB Make sure you have disconect the power before changing the jumpers The two composite outputs can be independently switched for Oohm or 75ohm operation For more information see Fig Stereo Generator at the end of this manual SCA INPUT The stereo generator has an 600ohm unbalanced SCA input The SCA will be mixed into each composite output 1 5V peak at the subcarrier input BNC produces 10 subcarrier injection with reference of 100 modulation of the FM carrier independent of the level output control 19kHZ OUTPUT A 19kHz output TTL is available at a RCA connector at the rear side for synchroniz ing an external subcarrier generator like RDS to the 19kHz pilot tone 19kHZ CRYSTAL OSCILLATOR Although the 19kHZ pilot tone of the stereo generator is very2. Cannot be tested separately If you think the phase rotator has a problem simply change the jumpers J11 and J12 to the left This disables the phase rotator If this solves the problem IC U2 Is probable broken Replace the IC and test again LEVELER TEST Beginning settings A Be sure that the Leveler and System switches are in Operate B Leveler drive 10 C Multiband Drive 0 D Multiband Clipping 4 E Loudness Clipping 4 A Feed a 1kHz tone into both channels increase the input till the gt leveler gain reduction meter indicates 10 B Decrease the signal by 10dB in one step C When listening to the output of the unit the 1kHz tone should be increasing slowly CROSSOVER TEST 16 WARSANIS 1401FM USER MANUAL Be very care full do not touch any other pins than those shown below A B Leveler and System switch operate Feed program material or white noise to the unit Low band check front PCB board2 Check audio on pin 1 and 7 at U5 Mid Low band check front PCB board2 Check audio on pin 1 and 7 at U2 Mid High band check front PCB board2 Check audio on pin 1 and 7 at U3 High band check front PCB board2 Check audio on pin 1 and 7 at U8 MULTIBAND TEST Settings A Switch the Leveler into bypass be sure that the System switch is in Operate B Leveler drive C Multiband Drive 10 D Multiband Clipping 4 E Loudness Clipping 4 A Feed pink noise into both channels increase the input till the
3. gt Multiband gain reduction meter indicates 15 B Check the led meter on the front panel C Decrease the signal by 10dB in one step D When listening to the output of the unit the pink noise should be increasing very fast almost unnoticeable The time in which the audio increases depends on the setting of the density switches MULTIBAND CLIPPING TEST No audio is necessary to preform this test A TDO W Locate the multiband clipper diodes on the output board These diodes are located right of U5 on the PCB Connect your DC meter to the right of Diode D1 Check the DC voltage at the anode right side of D1 Your meter should be reading negative 1 16 Volt DC 0 2 Volt Set the Multiband Clipping control to 4 Your meter should be reading negative 0 65 Volt DC 0 1 Volt Repeat steps C D E and F at the cathode left side of Diode D2 Your DC meter should be reading positive voltages 17 WARSANIS 1401 FM USER MANUAL LOUDNESS CLIPPING TEST No audio is necessary to preform this test A Locate the loudness clipper diodes on the output board These diodes are located above and below U9 The Loudness clipping control does not have any affect on the DC voltage of the Diodes Connect your DC meter to the anode top side of Diode D8 Check the DC voltage at the anode top side of D8 Your meter should be reading negative 4 25 Volt DC 0 25 Volt Check the DC voltage at the cathode top side of D7 Yo
4. Although the loudness clipper module is distortion controlled it is possible that a certain amount of distortion is hearable when to much clipping is used A sharp 15 kHz low pass filter prevents the stereo generator and transmitter from out of the band frequencies Phase and overshoot filters are used to compensate overshoots and phase differ ence created by the crossover networks and low pass filters Without the phase correction filters you will not have a flat phase response Without the overshoot filters it is not unusual to get overshoots as high as 3 to 4 dB The safety clipper is only active to eliminate overshoots caused by very unusual waveforms WARSANIS 1401 FM USER MANUAL The Stereo generator option uses a digitally controlled circuit to produce a high quality composite signal The Stereo generator has two outputs both with independ ent output amplifiers and level controls A SCA subcarrier input is available for RDS and a 19kHz TTL output for syncronisation This stereo generator replaces all low pass and high pass filters overshoot filters pre emphasis and the stereo generator of the transmitter or STL link Selectable de emphasis on the analog output gives you the possibility to connect the Warsanis 1401FM directly to a flat input of a external stereo generator if the integrated stereo generator is not being used WARSANIS 1401 FM USER MANUAL INSTALLATION GENERAL We suggest leaving one rack space vacant betwe
5. be achieved by using the plastic screwdriver increasing or decreasing the multi turn cermet trimmers at the back labelled composite output 1 or 2 depending on which BNC output is being used The stereo generator is calibrated with a pilot injection of 9 This injection is user adjustable between 7 and 10 by a R51 See Fig Stereo generator COMPOSITE STL LINK If a composite STL link is being used adjust the composite output of the stereo generator for 100 modulation on your composite STL transmitter After that adjust your composite STL receiver output or transmitter input for 100 modulation on your transmitter composite meter or modulation monitor 11 WARSANIS 1401 FM USER MANUAL USING SCA Most countries will NOT require adjustment of the input level of the stereo generator They allow you to generate SCA signals on top of the MPX signal This results in a higher devation than 75kHz reading on your modulation monitor If you have finished the LINE UP switch off the internal sinus wave generator don t forget to change the jumper and put the cover on the Warsanis 1401FM If required connect the SCA generator to the SCA BNC connector at the rear of the Warsanis 1401FM A 19kHz reference output is available on a RCA connector No further internal adjustments are necessary for normal operation 12 WARSANIS 1401 FM USER MANUAL OPERATION Make sure the Warsanis 1401FM bypass switch is switched to OPERATE The first
6. 15 to 30 minutes to set up the entire system INSTALLING THE 1401FM PREPARATION Make sure your transmitter or STL link has a flat input and that all pre em phasis low and highpass filters and transformers are defeated or removed and that all jumpers are set to your requirements Connect one of the Composite outputs of the Warsanis 1401FM directly to the BNC connector of the baseband input of the transmitter using a short length of coaxial cable The maximal length of the cable must not exceed 15 metres 50 feet At this stage do not connect your SCA generator to the stereo generator when setting up the Warsanis 1401FM LINE UP This is one of the most important steps of installing the Warsanis 1401FM The Warsanis 1401 Stereo Generator has a build in tone generator that produces a 400Hz sinus wave of 100 modulation including the 19kHz pilot tone without SCA subcarrier Turn off the power and open the cover and switch on the sinus generator by using the switch on the Stereo Generator board and by moving one jumper see Fig Stereo Generator Turn the power back on If the sinus generator is switched on the audio inputs of the stereo generator are connected to earth This prevents any signal coming into the stereo generator influencing the 100 output generated by the sinus generator Connect a modulation monitor to the transmitter or receiver and adjust the composite output of the stereo generator to produce 100 modulation This can
7. ER Typical system configurations 8 WARSANIS 1401 FM USER MANUAL CHANGING THE INPUT SENSITIVITY Skip this step if you want an input sensitivity of 10 to 10dBu The Warsanis 1401FM is shipped with the input sensitivity set to 10 to 10dBu This is the most common setting for professional broadcast equipment Move the four jumpers J4 J6 J7 and J8 on the output board of the processor to the right See fig Boards in order to change the input sensitivity from 20 to 10dBu This is only necessary if you connect consumer equipment to the input of the Warsanis 1401FM ANALOG INPUTS AND OUTPUTS Symmetrical PIN1 GROUND PIN2 HOT PINS COLD PHASE ROTATOR Move the two jumpers J11 and J12 to the left to disable the Phase Rotator The recommended and shipped setting is ENABLED ANALOG OUTPUT LEVEL On the rear side of the Warsanis 1401FM you can adjust the output level max gt 18dBu Use the supplied screwdriver to change the output level For setting the maximum desired output use the installation setting as illustrated on fig gt Recom mended settings The best way to set the output level is to use program material not sinus tones If available use a pre emphasised modulation monitor or a good pre emphasised PPM meter If a STL is used you must have at least 3 dB headroom between the maximum output of the Warsanis 1401FM and the clipping point if you are using an STL analog audio link
8. LOW 1 ATE OPER SLOW SLOW SLOW SLOW ATE URBAN OPER SLOW ane MEDI MEDI ATE UM UM SOFT 2 4 2 4 OPER SLOW SLOW SLOW SLOW HITS ATE SUPERL 6 8 8 15 OPER FAST FAST FAST FAST 4 3 OUD ATE Peak level on the gain reduction meters using program material 14 WARSANIS 1401 FM USER MANUAL THE WARSANIS 1401FM IN HARMONY WITH OTHER EQUIPMENT MIC PROCESSING Most stations use mic processing for its announcers Be sure to tune the Warsanis 1401FM to your desired sound before tweaking the mic processors Use only a few dB of gain reduction on your mic processor This avoid heavy pumping and breading If available use a de esser The de esser prevents extensive high frequency limiting and the Warsanis 1401FM from overload The gate downward expander on your mic processor is very useful if more than 4 dB of multiband gain reduction on the Warsanis 1401FM is being used LEVELER The leveler in the Warsanis 1401FM is perfectly adjusted to the rest of the unit Some stations prefer to use their own leveling devices Be sure that when you use another leveler than the one in the Warsanis 1401FM the internal leveler is switched off Never use a leveler as a pumping compressor This decreases the quality of the Warsanis 1401FM OTHER EFFECT EQUIPMENT All devices must be placed before of the Warsanis 1401FM STEREO ENHANCERS Never use too much stereo enhancement It can cause multipath distortion EQUALIZERS Som
9. RSANIS 1401FM USER MANUAL PEAK MODULATION CONTROL LOW PASS FILTER PILOT PROTECTION UPPER COMPOSITE PROTECTION PHASE OVERSHOOT FILTERS SAFETY CLIPPER JUMPER CONTROLS PCB S SETUP CONTROLS SYSTEM BYPASS 22 Within 2 typical 9th order elliptical phase linear gt 60 dB gt 65 dB Compensate the overshoots and phase difference created by crossover networks and low pass filters Only active to eliminate overshoots caused by very unusual waveforms Input 5 10 dBm or 20 5 dBm Phase Rotator de emphasis Stereo Tracking Drive Leveler Drive Multiband Drive Multiband Clipping Drive Loudness Clipping Leveler Bypass and System Bypass Density can be per band adjusted by a 3 position slide switch Stereo tracking van be swiched per band by a Jumper Relay controlled hard bypass In case of a power failure the system will automatically be switched in bypass mode WARSANIS 1401FM USER MANUAL STEREO GENERATOR SPECIFICATIONS Stand a lone Performance Frequency Response 0 5dB 30Hz 15kHz Separation gt 55dB 400Hz Noise 50 microseconds de emphasized 100 modulation gt 75dB Total Harmonic Distortion lt 0 07 THD 0 065 SMPTE IMD 20Hz 15kHz Crosstalk Linear referenced to 100 modulation 60dB Crosstalk Non linear referenced to 100 modulation 60dB 38kHz Subcarrier Suppression referenced to 100 modulation 60dB 76kHz Subcarrier and Suppression Sideband ref
10. WARSANIS 1401FM USER MANUAL QUICK INSTALLATION AND SETUP MANUAL WARSANIS MODULATION PROCESSOR March 2001 MODEL 1401FM Wijde Wade 5 3439 NP Nieuwegein The Netherlands Tel 31 0 30 2322209 Fax 31 0 30 2304959 EMAIL info warsanis nl http www warsanis nl I WARSANIS 1401FM USER MANUAL Manual Rev 2 2 Part number M1401FM0397 8 2001 Warsanis Productions WARSANIS 1401FM USER MANUAL TABLE OF CONTENTS Page Contents 1 2 3 4 5 10 Table of contents Table of contents continued Warranty Introduction Short description of the Warsanis 1401FM Installation General Installation in the studio Installation at the transmitter site Changing the input sensitivity Analog Inputs and outputs Phase rotator Analog Output level Baseband Composite outputs Baseband Composite output level Changing the composite output impedance SCA Input 19kHz output 19kHz crystal oscillator Unbalanced analog usage Grounding Fuses Setup and operation Preparation Line up Composite STL link Using SCA 11 Density switches Stereo Tracking Loudness clipping Transmitter limiters clippers 12Recommended settings WARSANIS 1401 FM USER MANUAL TABLE OF CONTENTS CONTINUED Page Contents 13 14 15 16 17 18 The Warsanis 1401FM in harmony with other equipment Mic processing Leveler Other effect equipment Stereo enhancers Equalizers Audio exciters Bass enhancers Test and ali
11. and type GROSS DISTORTION OR LOST OF MODULATION Check the clipper diodes of the multiband and loudness clippers see test and alignment procedures Check the multiband processors IF ON AIR BALANCE SEEMS INCORRECT Check the crossover filters Check the de emphasis J9 and J10 Check the multiband processors and clippers CHECK THE FOUR BAND PROCESSORS 19 WARSANIS 1401 FM USER MANUAL Locate the multiband clipper diodes on the output board Feed audio into the unit Check on audio at the left side of the left row of diodes D1 3 9 11 13 15 and 17 For the other channel check the right side of the right row of diodes D2 4 10 12 14 16 18 20 You should listen to the output of the several bands separately If no audio is found at one or two of the diodes the problem is likely to be a processor failure Contact your official Warsanis dealer on how to solve this problem VOCAL DISTORTION Check the control of the loudness clipping Reduce this control If the distortion does not decrease check the loudness clippers as described above GATE LIGHT PERMANENT ON OR OFF WITH NORMAL PROGRAM MATERIAL This probably indicates a failure of the gating circuity on board 2 Check U13 IF YOU STILL HAVE A PROBLEM Contact your official Warsanis dealer or contact Warsanis customer service in The Netherlands 20 WARSANIS 1401FM USER MANUAL TECHNICAL SPECIFICATIONS GENERAL Total harmo
12. e stations want to have more frequency control This can be achieved by placing an equalizer before of the Warsanis 1401FM Any equalizer will do parametric or graphic Never use more than 2 to 3 dB of equalising to prevent the Warsanis 1401FM from overload AUDIO EXCITERS Exciters create harmonics in the higher band Be careful on how much gt exiting you apply Too much exiting can causes overloads in the processing equipment BASS ENHANCERS Same as above never overdrive the bass enhancers It can cause pumping and distortion when too much bass enhancing is applied 15 WARSANIS 1401 FM USER MANUAL TEST AND ALIGNMENT PROCEDURES Thanks to the design of the Warsanis 1401FM the unit does not have any user alignment points These tests schould be carried out off air POWER UP TEST A Apply power and immediately check for overheating of the regulators on the power board Also check other components for overheating B Check the power leds on the front panel INPUT STAGE TEST Beginning settings A Switch the Leveler into bypass be sure that the System switch is in Operate B Leveler drive C Multiband Drive 0 D Multiband Clipping 4 E Loudness Clipping 4 A Feed a 1kHz tone into both channels increase the input till the gt Multiband gain reduction meter indicates 2 B Change the four input jumpers J4 J6 J7 J8 to the right C The output level should increase approximately 10 dB PHASE ROTATOR TEST
13. en the units When several units are in a common rack we recommend using one common power supply strip to minimize hum and ground loop problems INSTALLATION IN THE STUDIO The Warsanis 1401FM should always be the last device in the audio processing chain Disable all low pass and high pass filters input transformers and limiters clippers placed after the Warsanis 1401FM The system group delay of the land lines STL or satellite links must be constant between a frequency range of 30Hz to 15 000Hz The frequency response must be as flat as possible lt 0 5dB recommended The Warsanis is shipped with a flat frequency response on the analog outputs This means that the de emphases are enabled Defeating the de emphasis is only neces sary if you install the Warsanis 1401FM at the transmitter site without using the intergraded stereo generator pre emphasis at the transmitter stereo generator must be disabled INSTALLATION AT THE TRANSMITTER SITE Disable all low and high pass filters input transformers the stereo generator pre emphasis and limiters clippers placed after the Warsanis 1401FM PEA LAND LINES L STUDIO a E00 FM TRANSMITTER gt gt STUDIO MODEL 1400 FM TRANSMITTER gt EEE LAND LINES STUDIO MODEL 1400 FM TRANSMITTER gt STL STL STUDIO oa on TRANSMITTER RECEIVER FM TRANSMITT
14. erenced to 100 modulation 60dB INPUT Directely connected to the 1401FM output board SCA SUBCARRIER INPUT Configuration One input that sums into composite baseband outputs Sensitivity 0 8Vp p for 10 modulation 1 0Vp p for 12 5 modulation of main carrier Maximum Input Level 18dBu Impedance 600 ohms unbalanced Connector BNC EMI suppressed COMPOSITE BASEBAND OUTPUTS Configuration Two outputs each with Output Level control output amplifier and BNC connector Source Impedance 0 ohms or 75 ohms jumper selectable Load Impedance 40 ohms or greater Level Adjustable OVp p to 9Vp p 100 modulation with Output Level control Connector BNC EMI suppressed PHYSICAL Switches Stereo Mono Stereo Mono L Mono R Crosstalk Test Operate Main gt Sub Sub gt Main 400Hz Generator Jumpers Pilot On Off 400Hz Generator On Off Output Impedance User Screwdriver Adjustable Controls Output Level Pilot Comp 1 Comp 2 Safety Standards CE marked PILOT Circuit Characteristics Frequency 19kHz Accuracy 1Hz Injection Adjustable 7 to 10 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 23
15. gnment procedures Power up test Input stage test Phase rotator test Leveler test Crossover test Multiband test Multiband clipping test Loudness clipping test Output stage test Stereo Generator test Troubleshooting Lost of modulation Buzz Whistle Gross distortion or lost of modulation If on air balance seems incorrect Check the four band processors Vocal distortion Gate light permanent on or off If you still have a problem Technical specifications general Technical specifications stereo generator Boards Stereo Generator WARSANIS 1401 FM USER MANUAL WARRANTY Warsanis Productions warrants its products to be free from any defects in workmanship for a period of one year This warranty will not be void if the user modifies a Warsanis product However broken wires broken PC board circuit traces burned areas and broken components resulting from improper procedures handling are not covered under warranty Warsanis Productions is not responsible for dam ages resulting from the use of its product from incorrect or unsafe installation or for damages caused by war fire flood or other man made or natural calamites Please fill in the Registration Card and fax it to Warsanis Productions in The Netherlands You are then automatically entered in our product update en new product mailing list INTRODUCTION The Warsanis 1401FM is an integrated multiband audio processing system for FM radio that replaces all others comp
16. han as a compressor The idea is to keep consistent dynamic levels working into the four band audio processors By doing this the limiter will operate within its gt sweet spot more often and produce a more consistent on air sound The release and attack times are very slow Hence the AGC Leveler does not affect the dynamic range of the signal When the signal is under the gate threshold the system slows down the release times to prevent noise rush up Program material below the gate threshold is considered as noise The gate threshold can be adjusted from 45 up to 0 dB via a trimmer inside the unit 25 50 or 75us pre emphasis specify when placing the order The four band processors have independent program controlled time constants according to the band frequency In each band you can switch the density between fast medium and slow The density control affects release times attack times double sloop release times and more You can also select the strereo tracking per band For example you can link band three and four induvidually to provide the stereo link The Left and Right channel of Band one and two will work independently Multiband clipping is a soft clipping module that acts gently without adding audible distortion to the signal Filtering after the soft clippers prevents interharmonic distortion Loudness clipping is a hard clipping module This gives you excellent peak control Too much loudness clipping results in distortion
17. nic distortion THD Signal to noise Audio input Input sensitivity Input connectors Audio output Output level Output connectors Size Weight AC Power PHASE ROTATOR AGC LEVELER GATING PRE EMPHASIS CROSSOVER Phase linear Crossover points FOUR BAND PROCESSOR MULTIBAND CLIPPING Clipper threshold LOUDNESS CLIPPING Clipper drive Clipper circuit 21 lt 0 12 below processing threshold lt 0 3 all signal processors active gt 60 dB 70 GB typical gt 20K Balanced 20 dBm or 10 dBm jumper selectable XLR Balanced Adjustable up to gt 18 dBm XLR 19 2 rack units Approximately 7 kilograms 230 115 Volt AC This all pass network makes peaks more symmetrical to fully benefit the symmetrical peak overload characteristics of the FM medium jumper selectable Program controlled time constants provide 20 dB of leveling Selectable Slows down the release time of the leveler as soon as the input falls under the gating threshold Threshold user adjustable inside the unit 25 50 or 75 us sepecify when order 6 dB Okt 140 850 6000 Hz Program controlled time constants provide 25 dB of multiband processing Time constants adjusted according to band frequency Employs delayed release for distortion reduction Stereo Tracking per channel On Off Adjustable over a range of 8 dB Adjustable over a range of 8 dB Distortion controlled WA
18. re loudness clipping means a louder but also more distorted signal Try to find a balance trade off between quality and distortion Voices are mostly more affected by the loudness clippers than music Setting of the loudness clipping drive should be done subjectively and over a period of time Try a recommended setting and start working from there TRANSMITTER LIMITERS CLIPPERS If an external stereo generator is used and there is a limiter after the Warsanis 1401FM that you cannot defeat set the Multiband Clipping to the maximum 4 to prevent the transmission limiter from being operative Be also very careful with the output gain too much output gain causes the transmission limiter to react which decreases the performance of the Warsanis 1401FM and the on air loudness If possible use the internal stereo generator of the Warsanis 1401FM This results in a louder on air sound and a better peak control 13 WARSANIS 1401 FM USER MANUAL RECOMMENDED SETTINGS FORMAT LEVE LEVEL DENS DENS DENS DENS DRIVE LER ER ITY ITY ITY ITY G R Bn ee ies oe INSTALL 15 BYPA 4 4 ATION SS CLASSIC E BYPA SLOW SLOW sLow SLOW KEIEN AL SS JAZZ 2 4 4 6 OPER SLOW SLOW SLOW SLOW 1 1 ATE CHR 4 6 6 8 OPER MEDI MEDI MEDI MEDI 3 1 ATE UM UM UM UM ROCK 4 6 6 8 OPER SLOW SLOW MEDI MEDI 2 2 ATE UM UM ALBUM 2 4 4 6 OPER SLOW MEDI MEDI MEDI 2 1 ATE UM UM UM AC 2 4 3 6 OPER SLOW SLOW SLOW S
19. ressors limiters clippers the stereo generator and filters It can be installed either at the studio site using the analog stereo outputs or the transmitter site using the composite outputs It can also be used for a compos ite baseband microwave link It is possible with the Warsanis 1401FM to create your own sound with an absolute control of peak modulation You can vary your sound between unprocessed and heavily processed With the Warsanis 1401FM you can give your station the punch loudness and clarity you always wanted The Warsanis 1401FM does not only do a great job for CHR stations but also sounds perfectly for talk radio and AC music formats and even clasical Simplified Block Diagram PHASE AGC e ROTATORS LEVELER Phase Rotators and AGC Leveler are user selectable FOUR BAND gt MULTIBAND LOUDNESS 15kHz LP gt PROCESSOR CLIPPERS CLIPPERS PHASE COR gt WARSANIS 1401 FM USER MANUAL SHORT DESCRIPTION OF THE 1401FM The phase scrambler rotator makes peaks more symmetrical to fully benefit the symmetrical peak overload characteristics of the FM medium Voice and some music can contain asymmetrical waveforms that can overload the processing circuit By removing asymmetrical waveforms from the audio larger amounts of gain reduction can be achieved with less distortion A 15kHz low pass filter prevents the AGC for gt out of the band frequencies The AGC Leveler acts more like a leveling device t
20. stable it is possible to replace the standard crystal with a crystal oscillator which will give you a stability of 1ppm part per million The crystal must be carefully removed from the PCB and one jumper must be changed for operation with an crystal oscillator Frequency 2 432 Mhz A factory kit with a crystal oscillator and installation instructions is available Contact your local dealer for further information UNBALANCED ANALOG USAGE INPUT If you want to connect unbalanced equipment to the input of the Warsanis 1401FM connect PIN3 to ground OUTPUT If you want a unbalanced output use PIN2 as gt HOT and leave PIN3 unused Do not connect PIN3 to Ground GROUNDING Always use the supplied grounded power cord Never defeat the earth ground The earth ground prevents ground loops hum and assured safety Measure the resis tance between the chassis and earth ground to verify that it is less than 0 5 ohm A RFI suppression filter is installed in the unit No ground lift switch is available To lift the ground from the unit remove the conection between the RFI suppresion filer and the chassis inside the unit FUSES The value of chassis fuse for 230V usage 250mA Slow Blow The value of chassis fuse for 115V usage 350mA Slow Blow The value of the power PCB fuse 1A Fast Blow Replace only with the same value 10 WARSANIS 1401 FM USER MANUAL SETUP amp OPERATION The Warsanis 1401FM is very easy to a setup You will need
21. stage of the setup is the AGC Use normal program material Adjust the DRIVE LEVELER to get approximately 4 to a maximum of 8 dB gain reduction on the led bar of the leveler Watch the led bar for a longer period of time if possible on music and speech This first step is very important for the rest of the processing unit Now you can set one of the recommended settings in the Warsanis 1401FM The Bypass switch has only effect on the analog XLR outputs The signal comming into the stereo generator will still be processed to prevent overmodulation DENSITY SWITCHES One of the functions is the possibility to change the density per band The density switches are located on the gt processing board PCB fig Boards There are four switches one for each band Each switch has three positions Changing the switches can be done on air Be careful when you change the density switches STEREO TRACKING JUMPERS It s possible with the Warsanis 1401FM to link left and right channels per band individually This means that for example you can link the left and right channel of band four high and leave the other three bands not linked This special future gives you more control over your sound If you stereo link a channel it tracks the stereo definition resulting in better stereo but lower average loudness The shipped setting is enabled LOUDNESS CLIPPING The setting of the loudness clipping control mostly depends on how competitive your market is Mo
22. ur meter should be reading positive 4 25 Volt DC 0 25 Volt Repeat the steps for Diode D23 and D24 am OUTPUT STAGE TEST A Feed program material into the Warsanis 1401 B Check for audio at the left output XLR connectors at pin 2 amp 3 C Repeat set A and B for the right channel STEREO GENERATOR TEST The stereo generator does not need any adjustment A seperate service manual is available To order the service manual please contact your dealer Do not try to adjust the trimmers on the Stereo Generator PCB Inproper adjustment can couse the Stereo Generator to fail 18 WARSANIS 1401 FM USER MANUAL TROUBLESHOOTING Determine if the problem is caused by the Warsanis 1401FM and not by other equipment LOST OF MODULATION Check the connection to and from the Warsanis 1401 FM If this is not the problem disconnect the unit from your audio chain Test the unit again C Check the connections between the XLR connectors and output input PCB Ifyou cannot locate the problem contact your official Warsanis dealer BUZZ Check the grounding of the Warsanis 1401FM Check the cables feeding the audio to the Warsanis 1401FM Check the power supply see test and alignment procedures WHISTLE Check the power supply see test and alignment procedures Ifthe whistle sounds more like stisteling it is likely to be an oscillating IC In this case you should locate the IC and replace it by a new one of the same value
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