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FM1050ES Series Operating Manual and User Guide

1. Parameter Description Dimensions 5 25 3RU high 17 43 2 cm wide 19 including the front panel 16 deep including the front panel and rear protective flanges the chassis body itself is 13 deep Weight Total shipping weight is under 33 5 pounds 15 2 kg and includes the following Chassis under 24 pounds 10 9 kg including AC power supplies 3 Add 8 5 pounds 4 kg for the shipping container and one AC power cord The manual and associated shipping paperwork weigh approximately 1 Ib 0 5 kg 19 Rack Mountable with Slide capability 38 Left and right rack mount tabs and handles are attached directly to the chas sis Rack mount slides are optional Temperature Operating Non Operating 3 0 C to 50 C 3 40 C to 70 C Relative Humidity Operating Non Operating 2 8 to 90 non condensing 5 to 95 non condensing Maximum Wet Bulb Operating Non Operating 27 C non condensing 35 C non condensing Altitude Operating Non Operating 3 Oto 10 000 feet above sea level 3 0 to 40 000 feet above sea level PTEK ES Series Operating Manual and User Guide 1 2 2 Electrical Table 1 2 lists the electrical specifications for the FM1050ES Table 1 2 FM1050ES Electrical Specifications Parameter Description Frequency Range 87 7 MHz to 108 MHz Audio Input Impedance 600 ohms Audio Input Level C
2. PTEK ES Series Operating Manual and User Guide 1 Attach the inside slide section see Figure B 3 on page B 3 to both sides of the FM1050ES chassis using two 10 32 screws per side see 2 Measure the depth of the 19 equipment rack into which the FM1050ES system will be installed this can vary from 24 to 30 3 Using the depth of the equipment rack adjust and attach the front and rear slide brackets to the outside slide section using the screws washers and nuts provided with the slide kit 4 With all slide brackets securely attached to both the right and left outside slide sections install both sections to the inside right and inside left of a 19 rack with two bolts per bracket making sure there is adequate room for the 2RU height 3 5 of a FMI1050ES system 5 Carefully insert the FM1050ES system ito the 19 rack so that the inside slides on both sides of the chassis travel smoothly into the channels of the out side slide sections Push the system into the rack until the mounting brackets on the front of the chassis are flush with the front of the rack 6 Secure the FM1050ES system to the 19 tack with two bolts on each side 10 32 Threaded Rack Mount Slide Holes Figure B 1 FM1050ES Right Side Rack Mount Slide Holes PTEK ES Series Operating Manual and User Guide Appendix C Setting the FSK ID With the unit in the stand by mode Press and hold the Raise button then switch th
3. The FM1050ES must be switched off and the line cord disconnected from the AC source when removing the top cover PTEK ES Series Operating Manual and User Guide Preface This document ES Operating Manual and User Guide provides instructions on how to install configure power up and perform diagnostics on the 1000 Watt PTEK ES FM Broadcast Transmitter see photo below an easy to use and versatile system that can be used in either stand alone or backup mode The information contained within is intended for an experienced system operator with a knowledge of high performance broadcast transmission systems The 3RU high 3 5 FM1050ES designed to fit a standard is 19 rack Optional rack mount slides are also available FM1050ES FM Stereo Broadcast Transmitter PTEK ES Series Operating Manual and User Guide Key features of the ES FM Stereo Broadcast Transmitter include e Totally solid state no tune construction e Wide input range from 180 to 264 VAC e Built in field programmable FSK ID for translator use e Remote control interface e Optional built in stereo encoder e Rugged design withstands up to 5G forces and 50 C e Meets or exceeds all FCC and CCIR standards e Designed and manufactured in the United States Frequency stability for each unit is ensured by using direct to channel digital modulation All units incorporate over temperature protection and VSWR foldback to automatically reduce power o
4. through the FUNCTION Key PTEK ES Series Operating Manual and User Guide 3 3 4 Final Check Pressing the FUNCTION key rotates the LCD display through the following screens Note At each screen pressing the LOWER or RAISE key changes the output power only PA VOLTS and PA AMPS is another way of indicating the power output accomplished by multiplying the voltage by the amperage current then multiplying the result by the efficiency Readings should be recorded weekly to keep track of changes which may indi cate developing problems auch as antenna or coax deterioriation 1 After pressing the FUNCTION key on the front of the FM1050ES the operat ing frequency will appear on the LCD display see Figure 3 9 Fresuencu 9a 1MHZ Figure 3 9 Press the FUNCTION Key to read Frequency 2 Pressing the FUNCTION key again will display the audio gain see Figure 3 10 Audio Gain ees Function to exit Figure 3 10 Press the FUNCTION Key to read Audio Gain PTEK ES Series Operating Manual and User Guide 3 Pressing the FUNCTION key again will display the power output volts mul tiplied by amps see Figure 3 11 PA WOLTS PHA 1 1 H 36 34 Figure 3 11 Press the FUNCTION Key to read VOLTS amp AMPS 4 Pressing the FUNCTION key again results in a screen showing forward pow er and reverse power see Figure 3 12 Figure 3 12 Press the FUNCTION Key to read Forward amp Reverse Pow
5. ES Series Operating Manual and User Guide FM1050ES Series Operating Manual and User Guide PTERK PTEK 1723 Little Orchard Street Unit D San Jose CA 95125 Phone 408 448 3342 888 889 2958 Fax 408 448 3342 World Wide Web http www ptekpower com PTEK PTEK reserves the right to revise and change any and all information included in this document ES Series Operating Manual and User Guide Copyright 2009 PTEK ALL RIGHTS RESERVED No part of this publication may be reproduced in any form by photocopy microfilm retrieval system or by any other means now known or hereafter invented without the prior written permission of PTEK The information in this publication has been carefully checked and is believed to be accurate However PTEK assumes no responsibility for inaccuracies PTEK retains the right to make changes to this publication at any time without prior notice PTEK does not assume any liability arising from the application or use of this publication or the product s described herein RESTRICTED RIGHTS LEGEND Use duplication or disclosure by the United States Government is subject to the restrictions set forth in DFARS 252 227 7013 c 1 ii and FAR 52 227 19 PTEK Customer Support Telephone 408 448 3342 Fax 408 549 9991 E mail service ptekpower com Web Site http www ptekpower com PTEK ES Series Operating Manual and User Guide Safety Instruction
6. arefully wash it with mild soap and water Figure 2 6 Remove the Exposed Air Filter 3 Check that the exposed air vent holes are unobstructed R 000000 amp ro a2 208eReRetetataeenes aa K Sss 5 Figure 2 7 Make Sure the Air Vent Holes are Unobstructed 4 After the air filter has been dried replace it and the front panel Make sure the front panel screws are fully tightened PTEK ES Series Operating Manual and User Guide 2 6 2 6 1 19 ee Al Left Rack Mounts Rack mount brackets or flanges which are built into the chassis and therefore not removable are used to secure the FM1050ES chassis to a 19 rack Rack mount slides are used to pull the FM1050ES away from the rack for easier access Mounting Brackets Use the following steps to secure a FM1050ES chassis to a 19 rack 1 With the help of a second person carefully insert the FM1050ES chassis into the 19 rack see Figure 2 8 nN Mounting Bracket Right Mounting Bracket Figure 2 8 Left and Right Rack Mount Brackets 2 Using four 10 32 screws with corresponding lock washers and nuts attach the FM1050ES chassis to the 19 rack through the four mounding holes of the mounting brackets Caution Make sure to tighten each mounting screw to assure that the FM1050ES chassis is firmly installed onto the 19 rack PTEK ES Series Operating Manual and User Guid
7. ation 2 4V 150W 15 Output power out of range Lo 10V 16 Not used 17 Not used 20 Lower ground to lower the output power 21 Final current DC indication Full scale 2 5V 22 Not used 25 Remote off ground to turn the unit off momentarily only PTEK ES Series Operating Manual and User Guide Appendix Rack Mount Slide Installation An optional set of two rack mount slides left side and right side is available for all FM1050ES FM Stereo Broadcast Transmittesystems and should be ordered at the time of purchase The FM500ES chassis contains two 2 threaded screw holes see Figure B 1 on page B 2 on each side to accommodate 10 32 size screws included with the rack mount slide kit Dimensions of the screw hole patterns on the sides of the FM1050ES chassis for installing rack mount slides are shown in Figure B 2 on page B 3 The required holes for specialized steel or aluminum slides will have to be measured drilled and tapped before installation Caution Any screws used to mount a slide to a FM1050ES chass must not exceed a length of 3 8 to prevent excessive penetration of the chassis The rack mount slide installation kit includes the following items a Two inside slide sections b Two outside slide sections c Two front short slide brackets d Two rear long slide brackets e Assorted screws washers and nuts Follow these steps to install a steel rack mount slide to the FM1050ES chassis
8. d vacuums that are conduc tive PTEK ES Series Operating Manual and User Guide General Safety Rules The device must be used in accordance with the instructions for use Electrical installations in the room must correspond to the requirements of respective regu lations Take care that there are no cables particularly mains cables in areas where persons can trip over them Do not use a mains connection in sockets shared by a number of other power consumers Do not use an extension cable Only use the mains cable supplied The unit is completely disconnected from the power source only when the power cord is dis connected from the power source Therefore the power cord and its connectors must always remain easily accessible Do not set up the device in the proximity of heat sources or in a damp location Make sure the device has adequate ventilation All plugs on the connection cables must be screwed or locked to the chassis housing The device is designed to be used in horizontal position only The device is no longer safe to operate when the device has visible damage or the device no longer functions In case of system malfunction or visible damage to the FM500ES the device must be shut down and secured against unintentional operation Repairs may only be carried out by a person authorized by PTEK If extensions are made to the FM1050ES the lgal stipulations and the device specifications must be observed
9. e 2 6 2 Rack Mount Slides Optional Rack Mount Slides can be mounted on each side of the FM1050ES FM Stereo Broad cast Transmitter for the pupose of sliding the unit imnd out of a rack Mounting slides are optional and should be ordered at the time your system is purchased To learn how to install rack mount slides refer to Appendix B Rack Mount Slide Installation Caution Any screws used to mount a slide to a FM1050ES chass must not exceed a length of 3 8 to prevent excessive penetration of the chassis PTEK ES Series Operating Manual and User Guide Operation Section Chapter Operation This chapter describes e How to set up the FM1050ES system to begin operation e How to turn the FM1050ES on and off e How to monitor and change the operational settings of the FM1050ES 3 1 Set Up the System To successfully operate the FM1050ES FM Stereo Broadcast Trasmitter an antenna or power amplifier and an audio source must first be connected to the system as outlined in the following steps 1 Connect the antenna or power amplifier input to the RF output connector on the rear panel of the FM1050ES se igure 3 1 on page 3 2 2 Connect the audio input to one of the following connectors the rear panel e Composite Input ensure the Stereo encoder is disabled e Balanced Mono Input e Balanced Stereo Left and Right if equipped with stereo encoder PTEK ES Series Operating Manual a
10. e or action that may cause injury to the trical shock and danger follow the instructions accompanying this symbol Sidebar A sidebar adds detail to the section within which it is placed but is not absolutely vital to the description or procedure of the section PTEK ES Series Operating Manual and User Guide General Section Chapter Overview and Specifications 1 1 Overview The 3RU high 5 25 ES Series FM Stereo Broadcast Transmitter is designed to fita standard 19 rack and is provided with rack mount left and right brackets and handles Optional rack mount slides are also available The ES Series are rugged enough to withstand extreme shock up to 5G temperature up to 50 C and EMI such as that associated with broadcasting from remote rugged environments see Figure 1 1 a block diagram is given in Figure 1 2 page 1 2 The ES Series supports Mono Wideband Stereo left and right and SCA inputs ideal for a variety of commercial and dedicated stereo broadcast transmission applications ae 105066 Figure 1 1 FM1050ES FM Stereo Broadcast Transmitter PTEK ES Series Operating Manual and User Guide Exciter DDS Module PA Module MPX RF Amplifier 1kW Pallet SCA LPF Directional Coupler Right Left Frequency Data Control Functions Control PCB Assy 48V Power VAC Switching Supply Switch Board LCD PCB Assy Display Bloc
11. e unit from Stand by to operate LOWER RAISE FUNCTION OPERATE STAND BY Release the Button when this is displayed on the LCD display Pressing the Function Button will increment the curser pressing raise lower will change the character When you are satisfied with both the CW ID and the interval timer which is in Minutes press the function switch to bring the curser to the first caracter then turn the unit to stand by To disable the CW ID set the timer to 00 After this is programmed the unit will send the set CW ID at the programmed timer interval With most FM receivers this id will be inaudible PTEK ES Series Operating Manual and User Guide Appendix C Setting the FSK ID With the unit in the stand by mode Press and hold the Raise button then switch the unit from Stand by to operate LOWER RAISE FUNCTION OPERATE STAND BY Release the Button when this is displayed on the LCD display Pressing the Function Button will increment the curser pressing raise lower will change the character When you are satisfied with both the CW ID and the interval timer which is in Minutes press the function switch to bring the curser to the first caracter then turn the unit to stand by To disable the CW ID set the timer to 00 After this is programmed the unit will send the set CW ID at the programmed timer interval With most FM receivers this id will be inaudible PTEK
12. er 5 A final pressing of the FUNCTION key will produce a screen showing devi ation see Figure 3 13 EUTATIOH vlgs Figure 3 13 Press the FUNCTION Key to read Deviation As already noted further pressing of the FUNCTION key will rotate the LCD display through a queue of the same screens PTEK ES Series Operating Manual and User Guide 3 4 Additional Adjustments The FM1050ES offers additional capabilities by pressing the LOWER RAISE and FUNCTION keys simultaneously see Figure 3 14 LOWER _ RAISE FUNCTION OPERATE STAND BY Figure 3 14 Press LOWER RAISE FUNCTION Keys Simultaneously Note When pressing LOWER RAISE and FUNCTION the FM1050ES cannot be in STANDBY mode The resulting LCD screens will appear as follows 1 First Figure 3 15 After a sew seconds Press the FUNCTION key to display the next LCD screen PTEK ES Series Operating Manual and User Guide Caution do not change any of these setting unless you have the proper test equipment and are able to make the apropriate mea surements i Use the raise Lower Keys Figure 3 16 to adjust Figure 3 17 3 5 Tune Up the Antenna After the FM1050ES is transmitting on the desired frequency refer to Section 3 3 Getting Started on page 3 4 check the reverse power which should be zero Anything greater than 5 percent of the forward power i e 5W for a 100W output requires attention If the r
13. everse power is higher than 5 percent recheck the antenna tuning instructions 3 6 Power Down the System To power down turn off the FM1050ES FMStereo Broadcast Transmitter press the STANDBY key then disconnect the AC pow er cord from the AC power socket on the rear panel of the chassis PTEK ES Series Operating Manual and User Guide Appendix Connector Pinouts This appendix provides connector pinouts and signal descriptions for the user I O connectors that are installed on the FM1050ES FM StereBroadcast Transmitter rear I O Panel see Figure 1 4 page 1 3 in Chapter 1 Overview and Specifications A 1 Accessory Port The FM1050ES rear I CPanel provides a 25 pin male DB25 connector as an acces sory port interface Apinout is provided in Figure A 1 signal descriptions are defined in Table A 1 on page A 2 13 1 Figure A 1 Accessory Port Pinout PTEK ES Series Operating Manual and User Guide Table A 1 Accessory Port Pinout Signal Descriptions Pin Signal Function 1 Forward power DC indication 2 4V 150W 2 Final voltage DC indication V V 10 3 Output power out of range Hi 10V 4 Not used 5 6 18 19 24V outout fan supply for combiners 7 Not used 8 Raise ground to raise the output power 9 Not used 10 Not used 11 12 23 24 Ground 13 Remote on ground to turn the unit on momentarily only 14 Reverse power DC indic
14. ing and specified type nor mal blow time delay etc should be used Do not use repaired fuses or short cir cuited fuseholders To do so could cause a shock or fire hazard Output Connector that present shock and burn hazards Never operate the exciter with out properly terminating the output connector in either an adequately rated load or antenna 5 Warning The 3 16 output connector carries dangerously high RF voltages Electrostatic Discharge ESD A sudden discharge of electrostatic electricity can destroy static sensitive devices or micro circuitry Proper packaging and grounding techniques are necessary pre cautions to prevent damage Always take industry standard precautions Grounding Methods Guard against electrostatic damage at workstations by following these steps 1 Cover workstations with approved anti static material Provide a wrist strap connect ed to a work surface and properly grounded tools and equipment 2 Use anti static mats heel straps or air ionizers to give added protection 3 Handle electrostatic sensitive components boards and assemblies by the case or the PCB edge 4 Avoid contact with pins leads or circuitry 5 Turn off power and input signals before inserting and removing connectors or test equipment 6 Keep the work area free of non conductive materials such as ordinary plastic assem bly aids and Styrofoam 7 Use field service tools such as cutters screwdrivers an
15. k diagram FM1050ES Figure 1 2 FM1050ES System Block Diagram The FM1050ES is designed within a 3RU high 5 25 form factor that is 18 deep including the front panel and rear protective flanges the chassis body itself is 13 deep and 17 43 2 cm wide 19 including the frontpanel to fit a standard size rack Features on the FM1050ES front panel are shown LCD Display e Forward amp Reverse RF Power Operate Ky e Deviation Standby Key e Final Output Volts amp Amperes Lower Key_ Raise Key N tee ao ee LOWER RAISE FUNCTION OPERATE STAND BY vere PESOCES Figure 1 3 FM1050ES Front Panel PTEK ES Series Operating Manual and User Guide Major internal components of the FM1050ES ca be seen in the open top view cover removed displayed in Figure 1 4 A Features on the FMIOSOES rear panel are shown in Figure 1 4 B Front Control and Metering Board Control Board High power amplifiers AC Power Supplies Under E Exciter Harmonic Filter A FM1050ES Top View Cover Off RF Output to Antenna SCA RDS Input 7 16 DIN Standard or 7 8 Flange Shown Composite Input AC Input Right Stereo or Mono Left Stereo Accessory Connecter PTEK ES Series Operating Manual and User Guide 1 2 Specifications 1 2 1 General Table 1 1 lists general specifications for the FM1050ES Table 1 1 FM1050ES General Specifications
16. nd User Guide RF Output to Antenna SCA RDS Input 7 16 DIN Standard or 7 8 Flange Shown Composite Input AC Input Right Stereo or Mono Left Stereo Accessory Connecter Figure 3 1 FM1050ES Rear Panel Connectors 32 Power Up the System 1 On the rear of the FM1050ES plug an C power cord shipped with each unit into the AC power socket see Figure 3 2 on page 3 3 2 Plug the other end of the AC power cord into a live AC outlet Note There is no On Off switch key on the FM1050ES FM Stereo Broadcast Transmitter As soon as power is introduced to the system through an AC power cord attached to a live AC outlet if the system was powered off while in Standby mode the system will again enter Stand by mode and the light on the STANDBY key on the front of the FM1050ES will turn red Ifthe system was powered off while not in Standby mode it will begin the startup sequence described in the section Startup Sequence on page 3 4 3 Make sure the STANDBY key on the front of the FM1050ES has turned red or the system has begun the startup sequence thus assuring that the system has powered on see Figure 3 3 page 3 3 PTEK ES Series Operating Manual and User Guide 3 2 Power Up the System LOWER RAISE FUNCTION OPERATE STAND BY LOWER RAISE FUNCTION OPERATE STAND BY B After power is applied to the system the STANDBY key LED turns red Figure 3 3 After Power has been Applied t
17. nt inspection or adjustment of internal components within the FM1050ES requires ser vice by a PTEK technician only DO NOT REMOVE THE TOP PROTECTIVE COVER OF THE FM1050ES CHASSIS see following Warning Warning Removal of the top protective cover of the FM1050ES by anyone other than an authorized PTEK technician will void the product warranty PTEK ES Series Operating Manual and User Guide ES Series Operating Manual and User Guide 22 Removing the Protective Top Cover Warning Make sure that the AC power cord is removed from the AC input con nector on the rear of the FM1050ES bef removing the protective top cover Open the FM1050ES FM Stereo Brodcast Transmitter as follows 1 Remove the protective top cover of the FM1050ES by loosening the two Phil lips screws on each side of the chassis see Figure 2 1 Phillips Screws 4 This side and far side Figure 2 1 FM1050ES Right Side Top Cover Phillips Screws 2 Store the cover and screws in a safe place until replaced PTEK ES Series Operating Manual and User Guide 29 Cleaning the Air Filter Accessing the air filter requires removing the front panel of the FM1050ES 1 Remove the 4 Phillips screws on the FM1050ES front panel sefigure 2 5 LOWER RAISE FUNCTION OPERATE STANDBY Screw FMS00ES Figure 2 5 Remove the Front Panel Screws to Access the Air Filter 2 Remove the air filter see Figure 2 6 then c
18. o the FM1050ES it enters Standby mode PTEK ES Series Operating Manual and User Guide 3 Getting Started 3 0 1 Startup Sequence 1 Press the OPERATE key on the front of the FM1050ES 2 After the OPERATE key is enabled the LED display will show the initializ ion sequence and display the screens in order shown in Figure 3 4 If frequency is correct wait until timer expires Initial screen after power on To change frequency press FUNCTION key Power on gelas St Enc OFF 3 F ess Func to change A FUNCTION FUNCTION key pressed key not pressed Fresuency 335 1MHz Initializing Use rse low to cha stand bry RAISE or LOWER FUNCTION key pressed key pressed Fresuency 83 SMHz FWE Pur REW Pluk Bil Gil Press Func to Ent Press RAISE key to increase frequency Press LOWER key to decrease frequency Press FUNCTION key to accept changed frequency FWE Pluk RELU PWF After transmitter frequency is correct hl l use the RAISE or LOWER key to set z oe the power output level Figure 3 4 After the OPERATE Key is Pressed the Startup Sequence Begins PTEK ES Series Operating Manual and User Guide 3 3 2 Changing the Stereo Encoder After changing the frequency in the startup sequence see previous page you have the option of changing the Stereo Encoder setting 1 If the LCD screen displays the desired setting Stereo Encoder OFF or ON press the FUNCTION key to accep
19. omposite 10 dBm Audio Input Level R amp L Stereo Encoder optional 10 dBm Frequency Response Composite 20 Hz to 15 90 KHz Pre Emphasis 50 or 75 uS Harmonic Distortion lt 0 25 max Signal to Noise Ratio gt 80 dB rms RF Output Impedance 50 ohms Output Connector 3 16 DIN female RF Power Output Harmonic Attenuation lt 70 dB Power Requirements 88 264 VAC internally fused Fuse 1 2 2 1 System Power AC power supply is auto ranging single phase AC input from a 180 to 264 VAC 47 to 63 Hertz PTEK ES Series Operating Manual and User Guide 1 2 3 Environmental 1 2 3 1 Shock The FM10S50ES is designed to survive an elevated shock environment All structural components are welded together enabling the system to survive a maximum 3 axis shock load of 5G at 20 msec duration 1 2 3 2 Electrostatic Discharge PTEK ES Series Operating Manual and User Guide Installation Section Chapter Installation 2 1 Installation Procedures components Wear an antistatic wrist strap and use an ESD protected mat Store ESD sensitive components in antistatic bags before placing them on any surface Handle all IC cards by the front panel or edges only 1 Caution Use industry standard ESD grounding techniques when handling all There are no operator serviceable parts inside the FM500ES therefore replaceme
20. s To maximize user safety and ensure correct device operation all instructions con tained in this section should be read carefully Caution It is important that the user observe all warnings and instructions that are on the device and contained in this manual Before Applying Power 5 Warning DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE Operation of the FM1050ES in the presere of flammable gass es or fumes can endanger persons proximate to the site of operation Verify that the line voltage is 220VAC Ground the Exciter Removal of the exciter cover will invalidate the Warranty Component replacement and internal adjustments must be made only by PTEK qualified service personnel Caution NO NOT REMOVE THE EXCITER COVER To minimize shock hazard the exciter chassis must be connected to an electrical ground the exciter must be connected to the AC power mains through a three conductor power cable with the third wire connected to an electrical ground safety ground at the power outlet Any interr uption of the protective grounding conductor or disconnection of the protective earth terminal will cause a potential shock hazard that could result in personal injury If the exciter is to be energized by any other source be certain that the chassis is connected to a separate safety ground PTEK ES Series Operating Manual and User Guide Fuses Only fuses with the same required current voltage rat
21. t the setting see Figure 3 5 Figure 3 5 Stereo Encoder Can be Changed Through the LCD Display 2 To change the Stereo Encoder sng press the RAISE or LOWER key which will result in the alternate setting see Figure 3 6 Stereo Encoder OH Press Func to Ent Figure 3 6 Press the RAISE or LOWER key to Change the LCD Display PTEK ES Series Operating Manual and User Guide 3 3 3 Audio Audio levels for the FM1050ES have already been set and should not need to be changed Deviation can be checked by pressing the FUNCTION key until the appro priate LCD screen is reached see Figure 3 7 DEWIATION l s Figure 3 7 When the LCD display is in DEVIATION mode the maximum deviation should occasionally reach 100 indicated by the thick bar If the 100 level is never reached or exceeds 100 the level needs to be adjusted The output level from the audio source should be adjusted to give a peak deviation of 75 kHZ as described above If the correct deviation cannot be obtained the audio gain can be raised or lowered by pressing the FUNCTION key until the appropriate LCD screen is reached see Figure 3 8 Audio Gain ees Function to exit Figure 3 8 Audio Gain Can be Adjusted Through the LCD Display When the AUDIO GAIN screen appears the value may be raised by pressing the RAISE key or lowered by pressing the LOWER key until the desired deviation is reached The Deviation Screen is Displayed
22. utput to safe operating levels Switch mode power supplies provide consistent performance even when there are frequent power outages and voltage fluctuations that make stressful demands of power dependence An overview and specifications of the ES FM Stereo Broadcast Transmitters is given in Chapter 1 Overview and Specifications of this manual Website Information PTEK corporate and product information may be accessed on the World Wide Web by browsing the website http www ptekpower com Your Comments are Welcome We are interested in improving our documentation and welcome your comments and suggestions You can email your comments to us at docfeedback ptekpowercom Please include the document part number in the subject line of your email PTEK ES Series Operating Manual and User Guide Notes Cautions Warnings and Sidebars The following icons and formatted text are included in this document for the reasons described Note A note provides additional information concerning the procedure or action being described erator or equipment This may involve but is not restricted to heavy equipment or Caution A caution describes a procedure or action that may result in injury to the op sharp objects To reduce the risk follow the instructions accompanying this symbol operator or equipment as a result of hazardous voltages To reduce the risk of elec 5 Warning A warning describes a procedur

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