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Instruction Manual

HCP2550A

Commercial Heterodyne Channel Processor

(For use in NTSC systems)

® is a registered trademark of the R.L. Drake Company

©Copyright 2002 R.L. Drake Co.

P/N: 3852423F-3-2002

Printed in the U.S.A.

®

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Содержание HCP2550A

Страница 1: ...uction Manual HCP2550A Commercial Heterodyne Channel Processor For use in NTSC systems is a registered trademark of the R L Drake Company Copyright 2002 R L Drake Co P N 3852423F 3 2002 Printed in the U S A ...

Страница 2: ...uick stops excessive force and uneven surfaces may cause the product and cart combination to overturn The lightning flash with arrow head symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within...

Страница 3: ...em is grounded so as to provide some protection against voltage surges and built up static charges Article 810 of the National Electrical Code ANSI NFPA 70 provides information with regard to proper grounding of the mast and supporting structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna discharge unit connection to grounding electro...

Страница 4: ...rrier at an output level of 60 dBmV 28 dBmV nominal 75 Ohms greater than 15 dB return loss with this port enabled Greater than 20 dBmV nominal Greater than 60 dB 115 VAC 10 60 Hz 30 Watts 00 C to 500 C ambient 19 481 mm W x 1 75 44 mm H x 14 3 363 mm D 10 lbs 4 6 Kg INPUT SECTION Frequency Range Input Impedance RF Input Level Adjacent Channel Rejection Noise Figure Tuner Image Rejection In channel...

Страница 5: ... The use of SAW filtering permits reliable adjacent channel operation of multiple Channel Processor and modulator units IF loop thru capability in the HCP2550A supplies a padded IF output prior to channel conversion This feature provides the capability to replace the standard internally generated IF output with an alternate source of composite IF or allows the insertion of IF scrambling equipment ...

Страница 6: ...d frequency of operation for a given channel with any required FCC offset It is recommended that the AFC be switched on for all input and output channel combinations except when the output channel is set for the same channel as the input The LOCK DETECT LED see Item F6 will light to indicate that both input signal synthesizers are locked and the AFC function is active F4 CHANNEL PLAN Switches Sets...

Страница 7: ...d level is reduced approximately 10 dB if the input preamp is switched on see Item F2 F9 A V RATIO Control This screwdriver adjustment varies the level of the output aural carrier over a range from 5 to 12 dB relative to the input A V ratio The aural carrier should be adjusted to approximately 15 dB below the visual carrier normal operation Clockwise rotation increases the output aural carrier lev...

Страница 8: ...E IF IN Connector This is the composite IF input to the output channel circuits The composite IF has both the aural and visual IF combined This connection is normally cabled directly to the COMPOSITE IF OUT connector see Item R5 This external loop allows the use of accessories such as scramblers or alternate video sources Note that accessory equipment must also have the visual carrier at 45 75 MHz...

Страница 9: ...ecked periodically with a spectrum analyzer to maintain a 1 dB variation of adjacent channel carriers Aural Visual A V ratios should be held to 15 dB or less The Output Level and A V Ratio controls are used respectively to make these adjustments If an output level of less than 50 dBmV is required add an attenuator of the appropriate value to the modulator output Example For an output level of 45 d...

Страница 10: ...L STRENGTH 115 VAC 60 Hz 30 WATTS RF OUTPUT RF INPUT PILOT EAS EAS IF IN FCC OFFSET COMPOSITE IF FUSE 1 2 AMP 250 V SLO BLO IF LOOP 6 Installation continued Figure 4 Channel To Channel Processing RF OUT TO SYSTEM HCP2550A OFF AIR CHANNEL TO CHANNEL PROCESSING Output channel is SAME as Input Channel FCC OFFSET automatic 0 7 0 7 INPUT CHANNEL OUTPUT CHANNEL OUTPUT ENABLED AFC OFF ON CATV OFF AIR IRC...

Страница 11: ... 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 UHF BROADCAST CHANNELS UHF BROADCAST CHANNELS UHF BROADCAST CHANNELS UHF BROADCAST CHANNELS UHF BROADCAST CHANNELS Channel Number Visual Carrier Frequency MHz 55 25 61 25 67 25 77 25 83 25 175 25 181 25 187 25 193 25 199 25 205 25 211 25 2 3 4 5 6 7 8 9 10 11 12 13 V...

Страница 12: ...0 00 216 00 222 00 228 00 234 00 240 00 246 00 252 00 258 00 264 00 270 00 276 00 282 00 288 00 294 00 300 00 306 00 312 00 318 00 324 00 330 00 336 00 342 00 348 00 354 00 360 00 366 00 372 00 378 00 384 00 390 00 396 00 402 00 408 00 414 00 420 00 426 00 EIA NCTA Numeric Equivalent InputChannel 2 3 4 1 5 6 95 96 97 98 99 14 15 16 17 18 19 20 21 22 7 8 9 10 11 12 13 23 24 25 26 27 28 29 30 31 32 ...

Страница 13: ... 25 337 25 343 25 349 25 355 25 361 25 367 25 373 25 379 25 385 25 391 25 397 25 403 25 409 25 415 25 421 25 427 25 433 25 439 25 445 25 451 25 457 25 463 25 469 25 475 25 481 25 487 25 493 25 499 25 505 25 511 25 517 25 523 25 529 25 535 25 541 25 547 25 91 25 97 25 103 25 109 25 115 25 RequiredFrequency Offset kHz NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE NONE 12 5 12 5 12 5 NONE NO...

Страница 14: ...s at R L DRAKE if we have all the facts If we must call you it may take longer R L DRAKE is not responsible for damage caused by lightning nonprofes sional alterations acts of God shipping damage poor storage handling etc R L DRAKE will make note of any shipping damage upon receipt Should your warranty card not be on file at R L DRAKE you will need to send proof of purchase to receive warranty ser...

Страница 15: ...rtant to obtain proper performance from this product Therefore carefully read the Instruction Manual This warranty does not apply to any defect that R L DRAKE COMPANY determines is due to 1 Improper maintenance or repair including the installation of parts or accessories that do not conform to the quality and specifications of the original parts 2 Misuse abuse neglect or improper installation 3 Ac...

Страница 16: ...R L DRAKE COMPANY 230 INDUSTRIAL DRIVE FRANKLIN OHIO 45005 U S A CUSTOMER SERVICE AND PARTS TELEPHONE 1 937 746 6990 TELEFAX 1 937 743 4576 WORLD WIDE WEB SITE http www rldrake com ...

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