AD-1 User Manual
Contents
1. To obtain service under this warranty the defective product together with a copy of the sales receipt or other satisfactory proof of purchase and a brief description of the defect must be shipped freight prepaid to Blonder Tongue Laboratories Inc One Jake Brown Road Old Bridge New Jersey 08857 This warranty does not cover damage resulting from i use or installation other than in strict accordance with manufacturer s written instruc tions ii disassembly or repair by someone other than the manufacturer or a manufacturer authorized repair center iii misuse misap plication or abuse iv alteration v lack of reasonable care or vi wind ice snow rain lightning or any other weather conditions or acts of God OTHER THAN THE WARRANTIES SET FORTH ABOVE BT MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND EXPRESS OR IMPLIED AS TO THE CONDITION DESCRIPTION FITNESS FOR A PARTICULAR PURPOSE MERCHANTABILITY OR AS TO ANY OTHER MATTER AND SUCH WARRANTIES SUPERSEDE ANY ORAL OR WRITTEN WARRANTIES OR REPRESENTATIONS MADE OR IMPLIED BY BT OR BY ANY OF BT S EMPLOYEES OR REPRESENTATIVES OR IN ANY OF BT S BROCHURES MANUALS CATALOGS LITERATURE OR OTHER MATERIALS IN ALL CASES BUYER S SOLE AND EXCLUSIVE REMEDY AND BT S SOLE OBLIGATION FOR ANY BREACH OF THE WARRANTIES CONTAINED HEREIN SHALL BE LIMITED TO THE REPAIR OR REPLACEMENT OF THE DEFECTIVE PRODUCT F 0 B SHIPPING POINT AS BT IN ITS SOLE DISCRETION SHALL DETERMINE BT2. monaural audio Use the level control provided on the A V modulator to adjust for optimum deviation of audio mod ulation 4 5 MHz Output Connect to the 4 5 MHz aural input jack The AD 1B furnishes 35 dBmV of composite audio This is the preferred connection for BTSC stereo operation The modulator s audio modulation control will not be functional when oper ated in this mode Levels are established by the broadcast source Some modulators do not provide this input option Consult the manufacturer Multiplex Audi Connect to the audio input jack The AD 1B furnishes 500 mV RMS of broadband audio This is the alternate con nection for BTSC stereo Use the level control provided on the A V modulator to adjust for optimum deviation of audio modulation The modulator must have sufficient audio bandwidth to pass a BTSC signal The modulator s audio modulation indicator may be unreliable when operated in this mode Consult the manufacturer Limited Warranty Blonder Tongue Laboratories Inc BT will at its sole option either repair or replace with a new or factory reconditioned product as BT may determine any product manufactured by BT which proves to be defective in materials or workmanship or fails to meet the specifica tions which are in effect on the date of shipment or such other specifications as may have been expressly agreed upon in writing i for a period of one 1 year from the date of original purchase o
3. Option 17 11 SUB BAND POWER SWITCH DPDT On Off switch with Option 17 12 RF OUT F Conn High VHF band RF output 75 ohms with Option 17 13 RF INPUT F Conn all band 75 Ohms AD 1B Series 7 Instruction Manual Setting The Unit Input Channel Two banks of switches are presented Switch 1 has 4 positions and Switch 2 has 8 positions Position 1 2 amp 3 of Switch 1 are used to set the unit operating mode as shown in the Switch 1 Table Position 4 remains in the UP position 8 4 2 1 8 4a 2 1 n O T Pa Ww e INVOKED REVOKED 2 O Olo0 OOO LULU OOOO dodo Tens f Ones a O i Broadcast Sub Band optional x L O Switch 2 is used to set the unit input channel number Channel setting is accomplished by setting the switch to the desired input channel The arithmetic sum of the values of both the Tens section and the Ones section is equal to the channel number to which the unit is set Switch 2 is divided into 2 sections the Tens section and the Ones section In each section there are 4 switches labeled 8 4 2 1 Each corresponds to it s respective numeric value A simple chart shown below gives the corresponding switch positions for Tens 1 to 12 and for the Ones position 0 9 The user sets the Tens section and the Ones section together to set the desired channel Example CH 116 set 11 Tens and 6 ones for 116 For single digit channels the Tens swit
4. SHALL IN NO EVENT AND UNDER NO CIRCUMSTANCES BE LIABLE OR RESPONSIBLE FOR ANY CONSEQUENTIAL INDIRECT INCIDENTAL PUNITIVE DIRECT OR SPECIAL DAMAGES BASED UPON BREACH OF WARRANTY BREACH OF CONTRACT NEGLIGENCE STRICT TORT LIABILITY OR OTHERWISE OR ANY OTHER LEGAL THEORY ARISING DIRECTLY OR INDIRECTLY FROM THE SALE USE INSTALLATION OR FAILURE OF ANY PRODUCT ACQUIRED BY BUYER FROM BT All claims for shortages defects and non conforming goods must be made by Buyer in writing within five 5 days of receipt of merchandise which writing shall state with particularity all material facts concerning the claim then known to Buyer Upon any such complaint Buyer shall hold the goods complained of intact and duly protected for a period of up to sixty 60 days Upon the request of BT Buyer shall ship such allegedly nonconforming or defective goods freight prepaid to BT for examination by BT s inspection department and verification of the defect BT at its option will either repair replace or issue a credit for products determined to be defective BT s liability and responsi bility for defective products is specifically limited to the defective item or to credit towards the original billing All such replacements by BT shall be made free of charge f o b the delivery point called for in the original order Products for which replacement has been made under the provisions of this clause shall become the property of BT Under no circumstances are products
5. THIS UNIT TO RAIN OR MOISTURE The exclamation point within an A IN equilateral triangle is intended to alert you to the presence of important operating and mainte RISK 0 3 ELECTRIC SHOCK nance servicing instructions DO NOT OPEN eee accompanying NOTE TO CATV SYSTEM INSTALLER This reminder is provided to call the CATV System Installer s attention to Article 820 40 of the NEC that provides guidelines for proper grounding and in particular specifies that the cable ground shall be connected to the grounding system of the building as close to the point of cable entry as practical Description The Blonder Tongue AD 1B is an agile audio video demodulator Front panel switches permit non volatile RF tun ing of any TV channels including Broadcast UHF VHF assignments and CATV Std IRC HRC assignments from 54 to 806 MHz and entire T channel band from 5 to 48 MHz with Sub band option The AD 1B demodulates any NTSC signal to baseband video and audio signals for monitoring or remodulation It also provides a 4 5 MHz sub carrier and a broadband multiplex output for MTS BTSC applications The AD 1B incorporates a PLL synthesized LO to assure precise tuning A Nyquist SAW filter provides stable accurate demodulation of the VSB signal This maintains timing and minimizes distortions Keyed AGC circuitry compensates for signal fluctuations A synchronous video detector provides low differential gain and minimal phase
6. equipment from leaky roofs wave guide roof entries and cold water pipe condensations Returning Product for Repair or Credit A Return Material Authorization RMA Number is required on all products returned to Blonder Tongue regardless if the product is being returned for repair or credit Before returning product please contact the Blonder Tongue Service Department at 1 800 523 6049 Ext 4256 or visit our website www blondertongue com for further information AD 1B Series Instruction Manual Preparation For Use After mounting the AD IB Demodulator in the rack observe the following signal interconnections Input RF Input Connect to 75 Ohm antenna or cable signal source providing levels between 3 and 40 dBmV Some derating may be required if imbalanced or high level multiple signals are present simultaneously Output Several possible applications exist These include feeds to monitors switchers and modulators A single video out put is provided but three audio options are available Choose the appropriate audio output from those listed below The example here is a demod remod application Video Output Connect to the video input jack The AD 1B furnishes the nominal standard of 1 Volt p p Use the level control pro vided on the A V modulator to adjust for optimum depth of video modulation Audio Output Connect to the audio input jack The AD 1B furnishes 500 mV RMS of baseband audio This connection is for
7. panel to the ON position 2 Connectthe cable containing the Sub Band channels T 7 thru T 13 to the Sub Band input 3 Using the supplied loop thru cable connect the Sub Band output to the RF input 4 Set the AD 1B front panel switches Input Channel Selector for the desired Sub Band channel by using the chart below Input Channel Selector Settings __ Switcht Switch2 Tens Switch 2 Ones T Channel 4 2 w foe nd ES N nd LO RUI CR US BS SS BS Est i BS UUDDOLDUO HOODOO OOOOOOO F Switch UP Position Invoked Law Switch DOWN Position Revoked For operation of the AD 1B with Non Sub Band channels set the Sub Band Selector to the OFF position on back panel and connect the coax cable from the system to the RF Input on the back panel Frequency Allocation Tables EIA Standard Incremental Harmonic cI Vid yi Vid 02 55 2500 55 2625 54 03 61 2500 61 2625 60 04 67 2500 67 2625 66 01 NA 73 2625 72 05 77 2500 79 2625 78 06 83 2500 85 2625 84 95 91 2500 91 2625 90 96 97 2500 97 2625 96 97 103 2500 103 2625 102 98 109 2750 109 2750 cannotlock to comb 99 115 2750 115 2750 tet referto FCC regs 14 121 2625 121 2625 120 15 127 2625 127 2625 126 16 133 2625 133 2625 132 17 139 2500 139 2625 138 18 145 2500 145 2625 144 19 151 2500 151 2625 150 20 157 2500 157 2625 156 21 163 2500 163 2625 162 22 169 2500 169 2625 168 07 175 2500 175 2625 174 08 18
8. to be returned to BT without BT s prior written authorization BT reserves the right to scrap any unauthorized returns on a no credit basis Any actions for breach of this contract must be commenced by Buyer within thirteen 13 months after the cause of action has accrued A copy of BT s standard terms and con ditions of sale including the limited warranty is available from BT upon request Copies of the limited warranties covering third party pro prietary sub assembly modules and private label products manufactured by third parties are also available from BT on request VideoCipher amp DigiCipher are registered trademarks of Motorola Corp TONGUE 800 523 6049 732 679 4000 FAX 732 679 4353 LABORATORIES INC a BLONDER One Jake Brown Road 2 Old Bridge NJ 08857 1000 USA www blondertongue com
9. 1 2500 181 2625 180 09 187 2500 187 2625 186 10 193 2500 193 2625 192 11 199 2500 199 2625 198 12 205 2500 205 2625 204 13 211 2500 211 2625 210 23 217 2500 217 2625 216 24 223 2500 223 2625 222 25 229 2625 229 2625 228 26 235 2625 235 2625 234 27 241 2625 241 2625 240 28 247 2625 247 2625 246 29 253 2625 253 2625 252 30 259 2625 259 2625 258 31 265 2625 265 2625 264 32 271 2625 271 2625 270 33 277 2625 277 2625 276 34 283 2625 283 2625 282 35 289 2625 289 2625 288 36 295 2625 295 2625 294 37 301 2625 301 2625 300 38 307 2625 307 2625 306 39 313 2625 313 2625 312 40 319 2625 319 2625 318 41 325 2625 325 2625 324 42 331 2750 331 2750 330 43 337 2625 337 2625 336 44 343 2625 343 2625 342 45 349 2625 349 2625 348 46 355 2625 355 2625 354 47 361 2625 361 2625 360 48 367 2625 367 2625 366 49 373 2625 373 2625 372 50 379 2625 379 2625 378 51 385 2625 385 2625 384 52 391 2625 391 2625 390 53 397 2625 397 2625 396 54 403 2500 403 2625 402 55 409 2500 409 2625 408 56 415 2500 415 2625 414 57 421 2500 421 2625 420 58 427 2500 427 2625 426 59 433 2500 433 2625 432 60 439 2500 439 2625 438 61 445 2500 445 2625 444 62 451 2500 451 2625 450 EIA Standard Incremental Harmonic c Vid Video IRC Video HRC 63 457 2500 457 2625 456 64 463 2500 463 2625 462 65 469 2500 469 2625 468 66 475 2500 475 2625 474 67 481 2500 481 2625 4
10. 799 2625 798 AD 1B Series Instruction Manual VHF Broadcast Channels Channel Video MHz 2 55 25 3 61 25 4 67 25 5 77 25 6 83 25 T 175 25 8 181 25 9 187 25 10 193 25 11 199 25 12 205 25 13 211 25 UHF Broadcast Channels Channel Video MHz 14 471 25 15 477 25 16 483 25 17 489 25 18 495 25 19 501 25 20 507 25 21 513 25 22 519 25 23 525 25 24 531 25 25 537 25 26 543 25 28 555 25 29 561 25 30 567 25 31 573 25 32 579 25 33 585 25 34 591 25 35 597 25 36 603 25 37 609 25 38 615 25 39 621 25 40 627 25 41 633 25 42 639 25 43 645 25 44 651 25 45 657 25 46 663 25 47 669 25 48 675 25 49 681 25 50 687 25 51 693 25 52 699 25 53 705 25 54 711 25 55 T1T 25 56 723 25 57 729 25 58 735 25 59 741 25 60 747 25 61 753 25 62 759 25 63 765 25 64 771 25 65 777 25 66 783 25 67 789 25 68 795 25 69 801 25 Sub Band Channels Channel Standard Video T7 T T8 13 T9 19 T10 25 T11 31 Ti2 37 T13 43 T14 49 9 10 AD 1B Series Instruction Manual Installation and Operation Note to CATV SYSTEM Installer This reminder is provided to call the CATV System Installer s attention to Article 820 40 of the NEC that provides guidelines for proper grounding and in particular specifies that the cable ground shall be connected to the ground ing system of the building as close to the point of cable entry as practical Unpacking and Handling Each unit is shipped w
11. 80 68 487 2500 487 2625 486 69 493 2500 493 2625 492 70 499 2500 499 2625 498 71 505 2500 505 2625 504 72 511 2500 511 2625 510 73 517 2500 517 2625 516 74 523 2500 523 2625 522 75 529 2500 529 2625 528 76 535 2500 535 2625 534 77 541 2500 541 2625 540 78 547 2500 547 2625 546 79 553 2500 553 2625 552 80 559 2500 559 2625 558 81 565 2500 565 2625 564 82 571 2500 571 2625 570 83 577 2500 577 2625 576 84 583 2500 583 2625 582 85 589 2500 589 2625 588 86 595 2500 595 2625 594 87 601 2500 601 2625 600 88 607 2500 607 2625 606 89 613 2500 613 2625 612 90 619 2500 619 2625 618 91 625 2500 625 2625 624 92 631 2500 631 2625 630 93 637 2500 637 2625 636 94 643 2500 643 2625 642 100 649 2500 649 2625 648 101 655 2500 655 2625 654 102 661 2500 661 2625 660 103 667 2500 667 2625 666 104 673 2500 673 2625 672 105 679 2500 679 2625 678 106 685 2500 685 2625 684 107 691 2500 691 2625 690 108 697 2500 697 2625 696 109 703 2500 703 2625 702 110 709 2500 709 2625 708 111 715 2500 715 2625 714 112 721 2500 721 2625 720 113 727 2500 727 2625 726 114 733 2500 733 2625 732 115 739 2500 739 2625 738 116 745 2500 745 2625 744 117 751 2500 751 2625 750 118 757 2500 757 2625 756 119 763 2500 763 2625 762 120 769 2500 769 2625 768 121 775 2500 775 2625 774 122 781 2500 781 2625 780 123 787 2500 787 2625 786 124 793 2500 793 2625 792 125 799 2500
12. Noise Figure VHF 8 10 dB UHF 10 dB Image Rejection VHF 65 dB Min UHF 50 dB Min Sub band Input Level 24 dBmV Max Sub band Optional Video Output Level 75Q 1V p p Video Bandwidth 25 Hz to 4 MHz 1 dB Differential Gain 3 p p Differential Phase 1 5 p p Group Delay 0 2 MHz to 3 5 MHz 30 ns Audio Output Level 6000 Unbal 500 mV RMS MPX Output Level 6000 Unbal 500 mV RMS 4 5 MHz Output Level 75Q 35 dBmV Harmonic Distortion 1 Max Mechanical Dimensions 1 3 4 x 19 x 14 5 16 inches HxWxD Shipping Weight 9 Ibs Front Panel Controls Channel Selection DIP Switches Rear Panel Controls Sub Band Option Power Switch Slide DPDT Indicators Power On Green LED Rear Panel Connectors RF Input Type F Video Output Type F 4 5 MHz Output Type F Audio Output RCA Phono MPX Output RCA Phono Sub band Input Type F Sub band RF Output Type F Power Cord Set 3 Wire 6 ft Fuse Rear Panel 0 25A SB General Power Requirements 117 VAC 60 Hz 16W Temperature Range 0 to 60 C Accessories Supplied 1 Sheet of channel number labels Coax cable optional 6 Pin Telephone cable optional 5 6 AD 1B Series Instruction Manual Controls and Connections Front Panel BROADCAST U 3 n Figure 1 Front Panel 1 CHANNEL IDENTIFICATION Designated space to attach channel number labels supplied 2 OPERATING MODE SWITCH Positions 1 2 amp 3 used to
13. One Jake Brown Road BLONDER Old Bridge NJ 08857 1000 USA 800 523 6049 732 679 4000 FAX 732 679 4353 TONGUE LABORATORIES INC www blondertongue com S INSTRUCTION MANUAL AD 1B Series Frequency Agile Demodulator Stock No 5932 651206500C 2003 Blonder Tongue Laboratories Inc All rights reserved Specifications are subject to change without notice Trademarks are the property of their respective owner 2 AD 1B Series Instruction Manual Safety Instructions WARNING o see You should always follow these instructions to help ensure against injury to yourself and damage to your equipment Read all safety and operating instructions before you operate the demodulator Retain all safety and operating instructions for future reference Heed all warnings on the demodulator and in the safety and operating instructions Follow all installation operating and use instructions ergr e Unplug the demodulator from the AC power outlet before cleaning Use only a damp cloth for cleaning the exterior of the demodulator F Do not use accessories or attachments not recommended by Blonder Tongue as they may cause hazards and will void the warranty F Do not operate the demodulator in high humidity areas or expose it to water or moisture gt Do not place the demodulator on an unstable cart stand tripod bracket or table The demodulator may fall causing serious personal injury and damage to
14. ch is set to zero Switch 2 Numeric Value Chart Channel Setting Examples BENSI ore RR cx se QQ E a l l cx s7 QE E n cme o 1 8 AD 1B Series Instruction Manual OPTION 17 SUB BAND INPUT Description The sub band Option 17 consists of a block converter placed before the product s main RF input The converter translates the entire T channel band 5 50 MHz to the high VHF TV band 173 218 MHz and presents this as the sub band converter output on the rear panel This output is coupled via a short coax jumper to the basic product s RF input The converter local oscillator operates at a frequency of 168 25 MHz Therefore at the output of the converter standard T channels appear as channel 7 for T 7 channel 8 for T 8 and so on Selection of the appropriate T channel to be processed is made via the front panel input frequency select DIP switches following the channel 7 settings for T 7 channel 8 settings for T 8 and so on A complete frequency selector chart is provided below In addition one may follow the settings for standard broad cast channels 7 13 as if they were T 7 through T 13 as described on Page 7 The sub channel converter has a conversion loss of approximately 8 dB Therefore a nominal input signal level to the sub band converter should be between 3 and 23 dBmV to ensure proper operation Connections for Sub Band Options 1 Set the Sub Band selector located on the back
15. distortion This reduces video ringing and color smear The AD 1B requires only 1 3 4 inches of height in a 19 inch rack and has no special cooling requirements The AD 1B satisfies applications in CATV headends TV broadcast studios microwave hubs translator sites educational television systems CCTV surveillance and industrial video networks Features e Agile Input All Broadcast and CATV channels including HRC amp IRC and T channels with Sub band Option e Direct DIP switch channel selection no memory to program non volatile e Synthesized tuning assures precise channel location e Nyquist SAW filter for accurate sideband response e Keyed AGC to give stable picture under varying input signal conditions e Synchronous video detector for superior linearity e Quadrature audio detector keeps distortion low e 4 5 MHz modulated audio subcarrier output for economical handling of BTSC stereo encoded program Broadband multiplex audio output preserves stereo separation Low profile 1 3 4 high chassis e Built in microprocessor controlled serial data interface with RS 232 Option 20 AD 1B Series Instruction Manual Specifications RF Input Visual Carrier Frequency Range 7 to 43 MHz Option 17 T7 to T13 55 25 to 801 25 MHz TV Bands Covered Sub VHF Low VHF High Super Hyper and UHF including HRC IRC Offset Assign Input Level Single Ch 45 dBmV Max 35 dBmV Recommended 60 Chs 20 dBmV Max 10 dBmV Recommended
16. ellite Dish Ground Clamp sy Electric Service Equipment x Ground Clamps VE b Grounding Conductors ower Service NEC Section 810 21 Grounding Electrode System NEC Art 250 Part H Antenna Discharge Unit NEC Section 810 20 AD 1B Series Instruction Manual Safety Instructions continued We strongly recommend using an outlet that contains surge suppression or ground fault protection For added protection during a lightning storm or when the demodulator is left unattended and unused for long periods of time unplug it from the wall outlet and disconnect the lines between the demodulator and the antenna This will prevent damage caused by lightning or power line surges Do notlocate the antenna near overhead power lines or other electric light or power circuits or where it can fall into such power lines or circuits When installing the antenna take extreme care to avoid touching such power lines or circuits as contact with them can be fatal Do not overload wall outlets or extension cords as this can result in a risk of fire or electrical shock Never insert objects of any kind into the demodulator through openings as the objects may touch dangerous voltage points or short out parts This could cause fire or electrical shock Do not attempt to service the demodulator yourself as opening or removing covers may expose you to dangerous voltage and will void the warranty Refer all se
17. ith all equipment assembled wired factory tested and then packaged in an appropriate shipping container Ensure that all accessories are removed from the container and packing material before they are discarded Mechanical Inspection Inspect the front and rear of the equipment for shipping damage Make sure the equipment is clean and no wires cables or connectors are broken damaged or loose Damage in Shipment Should damage be discovered after unpacking the system immediately file a claim with the carrier A full report of the damage shall be made and a copy forwarded to BLONDER TONGUE Laboratories Inc The company will then advise what disposition is to be made of the equipment Precautions Adherence to the initial installation precautions outlined in the Table below will help prevent problems arising during Installation Precautions Table PRECAUTIONS REQUIREMENTS Ensure easy access to rack wiring Allow a minimum of 18 inches behind the equipment rack s Facilitate servicing and maintenance Allow a minimum of 36 of clearance in front of the equipment rack s Avoid direct heating or air conditioning If unavoidable use deflector plates AC power source outlets Locate equipment near sufficient outlets to provide power for test equipment and power tools Rack Support Make certain rack supports are sufficiently rigid to support racks Building leakage Beware of dripping water onto
18. me of sale constituted a Closeout Product BT will at its sole option either repair or replace with a new or factory reconditioned product as BT may determine any product sold by BT which at the time of sale constituted a closeout item Closeout Product which proves to be defective in materials or workmanship or fails to meet the specifications which are in effect on the date of shipment or such other specifications as may have been expressly agreed upon in writing for a period of ninety 90 days from the date of original purchase Notwithstanding the foregoing in some cases the war ranty on third party software and on certain proprietary sub assembly modules manufactured by third party vendors and contained in BT products and on certain private label products manufactured by third parties for resale by BT are of shorter duration or otherwise more limited than the BT limited warranty for Closeout Products In such cases BT s warranty for Closeout Products constituting such third party software third party proprietary sub assembly modules and private label products will be limited to the duration and other terms of such third party vendor s warranty In addition notwithstanding the foregoing i certain Closeout Products that are not manufactured but are resold by BT carry the original OEM warranty for such products which may be longer or shorter than the BT limited warranty for Closeout Products All sales of Closeout Products are final
19. r such shorter period of time as may be set forth in the license agreement spe cific to the particular software being licensed with respect to iCentral hardware and software and all other software products including embedded software licensed from BT ii for a period of one 1 year from the date of original purchase with respect to all fiber optics receivers transmitters couplers and integrated receivers distribution amplifiers including TRAILBLAZER RETRO LINX and TWIN STAR products as well as for VideoCipher amp DigiCipher satellite receivers and iii for a period of three 3 years from the date of original purchase with respect to all other BT products Notwithstanding the foregoing in some cases the warranty on certain proprietary sub assembly modules manufactured by third party vendors and contained in BT products and on certain private label products manufac tured by third parties for resale by BT are of shorter duration or otherwise more limited than the standard BT limited warranty In such cases BT s warranty with respect to such third party proprietary sub assembly modules and private label products will be limited to the duration and other terms of such third party vendor s warranty In addition certain products that are not manufactured but are resold by BT carry the original OEM warranty for that product The limited warranty set forth in this paragraph does not apply to any product sold by BT which at the ti
20. rvicing to authorized service personnel Unplug the demodulator from the wall outlet and refer servicing to authorized service personnel whenever the following occurs gt The power supply cord or plug is damaged gt Liquid has been spilled or objects have fallen into the demodulator gt The demodulator has been exposed to rain or water gt The demodulator has been dropped or the chassis has been damaged gt The demodulator exhibits a distinct change in performance When replacement parts are required ensure that the service technician uses replacement parts specified by Blonder Tongue Unauthorized substitutions may damage the demodulator or cause electrical shock or fire and will void the warranty gt Upon completion of any service or repair to the demodulator ask the service technician to perform safety checks to ensure that the demodulator is in proper operating condition 4 AD 1B Series Instruction Manual The lightning flash with arrow head symbol within an equilat eral triangle is intended to alert you to the presence of uninsu a t e d dangerous voltage within the product s enclosure that may be of sufficient magnitude to consti tute a risk of electrical shock to persons TO REDUCE THE RISK OF ELECTRICAL SHOCK DO NOT REMOVE COVER FROM THIS UNIT NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL WARNING TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE
21. select CATV or Broadcast mode 3 CHANNEL SELECTOR Used to set input channel 4 INPUT CHANNEL EXAMPLES Channels 9 amp 116 shown 5 POWER INDICATOR LED illuminates to indicate presence of power e o A BLONDER oz sl d iii in io Dr TONGUE ione DEMODULATOR CAUTION OPTION 29 BAL MONO AUDIO OUT DATA OPTION 17 SUB BAND INPUT BLONDER TONGUE FOR CONTINUED OPTION 25 _ BAL STEREO AUDIO OUT OPTION 20 DIGITAL CONTROL RS232 LABORATORIES INC 117V 0 2A PROTECTION AGAINST i meo Heeeo0e 000 6 60 HZ 4 4ASB ONLY WITH SAME TYPE i Lo Ki Ha ON di 9 Te en he 250V 1 4A 250V SLO BLO FUSE pi i APS FIGHT FT Ou 3 BAND AGILE DEMODULATOR MODEL AD 1B OUT STOCK NO 5932 pur OU 7 1 IT aS J DT Figure 2 Rear Panel gt i 1 LINE CORD With 3 prong plug for grounded outlets 2 FUSE 1 4 Amp Slo Blow 250 Volt 3 MULTIPLEX AUDIO OUTPUT RCA jack broadband mplx aud 600 Ohm unbalanced 4 4 5 MHz OUTPUT F Conn modulated audio subcarrier 75 Ohms 5 AUDIO OUTPUT RCA jack audio baseband 600 Ohms unbalanced 6 VIDEO OUTPUT F Conn baseband video 75 Ohms 7 BALANCED AUDIO OUT Mono Stereo with Option 29 25 8 DATA OUT 6 Pin Telephone Jack RS 232 data output with Option 20 9 DATA IN 6 Pin Telephone Jack RS 232 data input with Option 20 10 SUB BAND IN F Conn Sub band RF input 75 ohms with
22. the demodulator Install the demodulator only in a mounting rack designed for 19 rack mounted equipment Do not block or cover slots and openings in the demodulator These are provided for ventilation and protection from overheating Never place the demodulator near or over a radiator or heat register Do not place the demodulator in an enclosure such as a cabinet without proper ventilation Do not mount equipment in the rack space directly above or below the demodulator Operate the demodulator using only the type of power source indicated on the marking label Unplug the demodulator power cord by gripping the plug not the cord The demodulator is equipped with a three wire ground type plug This plug will fit only into a ground type power outlet If you are unable to insert the plug into the outlet contact an electrician to replace the outlet Do not defeat the safety purpose of the ground type plug Route power supply cords so that they are not likely to be walked on or pinched by items placed upon or against them Pay particular attention to cords at plugs convenience receptacles and the point where they exit from the unit Be sure that the outdoor components of the antenna system are grounded in accordance with local federal and National Electrical Code NEC requirements Pay special attention to NEC Sections 810 and 820 See the example shown in the following diagram Satellite Dish Coaxial Cable from Sat
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