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AM Series 

Instruction Manual

Description

The AM Series are professional quality agile audio/video modulators equipped with an Emergency Alert System (EAS) 

feature, which can also be used for an alternate IF input. The units provide an audio and video modulated RF carrier on 

any channel from 54 to 550 or 806 MHz depending upon the model.  Any standard audio/video source can be used, such 

as satellite receivers, television cameras, video tape recorders, or television demodulators.
Channel tuning is easily accomplished with the use of front panel channel up/down push buttons. Frequency plans 

include CATV Standard EIA, IRC, HRC & Broadcast. All channel frequency information with appropriate FCC offsets is pre-

programmed and tuned electronically via a microprocessor. 
The AM Series have optional features to fit many different applications. A stereo audio option, Option 05, also allows the 

integration of a BTSC stereo encoder module into the AM Series. This optional stereo encoder converts stereo left and 

right audio into a composite BTSC stereo audio signal. The factory installed option provides 20 dB of stereo separation, 

less than 1.0% total harmonic distortion and 60 dB signal to noise ratio. 
The EAS / Alternate IF feature allows a choice between manual and automatic selection of the EAS/ALT IF input signal. This 

is done through a 3 position terminal strip on the rear of the unit. In the manual mode the EAS/ALT IF feature is activated 

by a contact closure switch, which completes a ground connection. In the automatic mode, two positions on the terminal 

strip are jumpered together enabling an automatic detection circuit in the unit. When an EAS/ALT IF signal is routed to the 

EAS/ALT IF port the unit automatically switches to that alternate signal.
The AM Series meets FCC Docket 21006 aeronautical frequency offset requirements (5 kHz video carrier accuracy). A high 

in-channel carrier to noise performance of 63 dB typical is achieved by the unit. A custom SAW IF filter is employed to 

provide true vestigial sideband selectivity with built-in FCC group delay equalization. A state of the art converter design 

with pre-programmed microprocessor controlled channel tuning ensures that the Blonder Tongue AM Series are the ideal 

agile modulator for any demanding CATV headend need.

Options

  02  Video Input Connector BNC 75 Ohm
  04  Sub Band Output (AM-60-550 only)
  05  Stereo Audio
  07  Video AGC
  08  Audio AGC
  09  Balanced Audio Input

Содержание AM-60-550

Страница 1: ...blondertongue com 2009 Blonder Tongue Laboratories Inc All rights reserved Specifications are subject to change without notice Trademarks are the property of their respective owner Model Stock No AM 60 550 59416 AM 60 806 59419 LISTED UL C US 45A6 Status Date Document No Issue No Author Active September 22 2014 651217400F 6 KK Obsolete December 11 2009 651217400E 5 KK ...

Страница 2: ...tly to Blonder Tongue Laboratories Inc One Jake Brown Road Old Bridge NJ 08857 Document Number USA 651217400F All product names trade names or corporate names mentioned in this document are acknowledged to be the proprietary property of the registered owners This product incorporates copyright protection technology that is protected by U S patents and other intellectual property rights Reverse eng...

Страница 3: ...structions before you operate the unit å Retain all safety and operating instructions for future reference å Heed all warnings on the unit and in the safety and operating instructions WARNING TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE NOTE TO CATV SYSTEM INSTALLER This reminder is provided to call the CATV System Installer s attention to Article 820 40 of the NEC t...

Страница 4: ...ult protection For added protection during a lightning storm or when the unit is left unattended and unused for long periods of time unplug it from the wall outlet and disconnect the lines between the unit and the antenna This will prevent damage caused by lightning or power line surges å Do not locate the antenna near overhead power lines or other electric light or power circuits or where it can ...

Страница 5: ...paration less than 1 0 total harmonic distortion and 60 dB signal to noise ratio The EAS Alternate IF feature allows a choice between manual and automatic selection of the EAS ALT IF input signal This is done through a 3 position terminal strip on the rear of the unit In the manual mode the EAS ALT IF feature is activated by a contact closure switch which completes a ground connection In the autom...

Страница 6: ...Channel Broadband Noise 4 MHz bandwidth Spurious Outputs Aural Visual Carrier Ratio 4 5 MHz Aural Inter carrier Freq Tolerance Channel Selectivity Adjacent Aural Below Adjacent Picture Above Visual Carrier Frequency Tolerance Standard Channels FCC Aeronautical Channels F Female 75 Ω 12 dB 54 to 806 NTSC CATV Ch 2 125 54 to 550 MHz NTSC CATV Ch 2 78 95 99 7 to 550 MHz NTSC CATV Ch T7 78 95 99 UHF V...

Страница 7: ...el configuration output display 10 ENTER BUTTON Evokes the current settings in the channel output display when depressed 11 STEREO INDICATOR Green LED lights when equipped with stereo option AM Opt 5 the audio select switch on rear panel in the stereo position and video is applied to the modulator Note All connections to the unit are made at the rear panel Figure 2 Rear Panel Figure 1 Front Panel ...

Страница 8: ...e Channel Configuration display mode The LED display will blink indicating a transition state The channel configuration is not changed until the ENTER button is pressed If the ENTER button is not pressed the display will return to resting state after 30 seconds If the mode is to be changed and it is not a valid mode for the existing channel when the ENTER button is pressed the new mode will be sel...

Страница 9: ...NTER button is not pressed the display will return to its resting state after 30 seconds Pressing and holding the UP or DN button will allow for faster scrolling The Level increments in 0 2 dB steps Output level accuracy is typically 1 dB of display 2 dB worst case A V CARRIER RATIO To adjust the aural to visual carrier ratio tune the RF indicator device to the aural carrier frequency and adjust t...

Страница 10: ...tal harmonic distortion and 60 dB signal to noise ratio Specifications Audio Input Sensitivity 350 mV rms for 55 kHz peak dev w pilot tone Video Input 0 7 to 2 Vp p Frequency Response Decoder output left or right channel L R In Phase Inputs 50 Hz 10 kHz 0 5 dB 50 Hz 12 kHz 0 75 dB L R Out of Phase Inputs 50 Hz 10 kHz 2 5 dB 50 Hz 12 kHz 3 5 dB L or R One Grounded 50 Hz 10 kHz 1 5 dB 50 Hz 12 kHz 1...

Страница 11: ... 480 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...

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Страница 15: ...y any person other than Blonder Tongue Service Department 9 Any modification of the product by any person other than Blonder Tongue Service Department 10 Fire flood war civil disturbance industrial action acts of God or any other causes beyond the reasonable control of Blonder Tongue 11 Any defect caused by lightning strike or power surges 12 Shipping costs to return products to Blonder Tongue for...

Страница 16: ...SEQUENTIAL 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 the customer in writing w...

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