Summary of Contents for Eagle EE-2002
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Page 1: Table Of Contents
POSITIVE JAMMING CARRIER SCRAMBLING SYSTEM MODEL--EE-2002 INSTALLATION MANUAL WRITTEN BY: DALE MARLAND PREPARED BY: PATRICK M. CONWAY TABLE OF CONTENTS 1.0--GENERAL DESCRIPTION 2.0--FRONT PANEL DESCRIPTION · 2.1--A Quick Look at the Factory Settings · 2.2--Modulation Control · 2.3--Power Control · 2.4--Carrier Control ·... -
Page 2: General Description
· Fig. 4 Cabling Diagram for the EE-2002 Encoder SECTION 1.0 GENERAL DESCRIPTION The EAGLE EE-2002 Positive Encoder is a state of the art, third generation, positive scrambling system intended to encode a Television channel for transmission over todays communication networks. The... -
Page 3: Front Panel Description
centered within the channels passband to prevent reception of the visual and aural content. At an authorized subscribers network connection a passive decoding filter restores the channel by removing the jamming carriers. During the course of this installation manual each section will refer you to a figure , and each step will have the individual control within brackets [ ] which will correspond to the control depicted on the figure. -
Page 4: A Quick Look At The Factory Settings
Figure 2 2.1 A Quick Look At The Factory Settings Dip Switch A [ 1 ] --- Modulation · A-1 -- 1.5 kHz......OFF · A-2 -- Combined Positive....ON · A-3 -- 10 Hz......OFF · A-4 -- Combined Negative....OFF Dip Switch B [ 2 ] ---Power ·... - Page 5 Dip Switch C [ 3 ] ---Carrier Control · C-1 -- Carrier 1 On/Off....ON · C-2 -- Carrier 1 Modulation...OFF · C-3 -- Carrier 2 On/Off....ON · C-4 -- Carrier 2 Modulation...ON LEDs [ 4 ]. [ 5 ], [ 6 ], [ 7 ] & [ 8 ] ·...
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Page 6: Carrier Control
EXT. The jack is a two conductor version, and shorting the conductors together with a timer or relay will activate the jamming carriers. Switch B-2 is the Master power switch for the jamming carriers and will over-ride the off , or open , state of the External jack allowing immediate front panel activation. -
Page 7: A Quick Look At The Factory Settings
Carrier Level....Mid Range 3.2 Powering The EE-2002 utilizes a universal power entry module [ 9 ] that is capable of accepting either 115 VAC or 230 VAC at 50 to 60 Hz. The selected voltage shows through a window on the face of the power entry module and may be changed by opening the module and rotating the selector until the correct voltage for your application is present. -
Page 8: Pre-Emphasis Loop
6.0 APPLICATION NOTES. 4.1 Rack Mounting And Cabling The EE-2002 is a 19 inch wide rack mount device that consumes 1/2 of a traditional rack space height or 1.75 inches . The encoder should be mounted near the modulator of the channel to be encoded. - Page 9 Power Entry Module (Item 9) has the correct voltage setting for the installation site and then attach the power cable to the unit. Initially check that the Front Panel Indicators display per section 2.5 of this manual. Cabling Diagram For the EE-2002 Encoder Figure 4 Cabling Your EE2002: 1.
- Page 10 Utilizing a good quality Television Receiver, or a demodulator and waveform monitor viewing VITS signals, place a decoding filter between the modulators RF output and the TVs or demodulators input. Align the Stage 1 and / or the Stage 2 pre-emphasis controls to achieve the sharpest picture or in the case of the waveform monitor the best VITS restoration.
- Page 11 Switch is up) which will transfer the control of any jamming carriers selected for activation by the Carrier On switches to a jack on the rear panel of the EE-2002 chassis. Shorting the conductors of the rear panel jack will activate any selected jamming carriers.
- Page 12 A 6 dB pad between the Jamming Carrier Loop output of the EE-2002 and the IF input of the modulator will usually lower the overall power presented to the output mixer of the modulator sufficiently to prevent the distortion. The same effect may be viewed upon a spectrum analyzer that is displaying the entire channels output bandwidth and looking for Spurs which present themselves only with the inclusion of the jamming carriers.
- Page 13 Pre-emphasis Loop Of the EE-2002 and may be connected as described above, IF out of the modulator to the Pre-emphasis Loop IN of the EE-2002 and the Pre-emphasis Loop Out of the EE-2002 to the Modulators IF input. Then the Jamming Carrier Loop In of the EE- 2002 should be terminated with 75 ohms and the Jamming Carrier Loop Out may be split by the desired number of channels to be encoded.
- Page 14 34.775 System D,K,L 38.00 36.125 36.175 System B,G,H 38.90 35.225 35.275 System B,G,H 38.00 Eagle Comtronics, Inc. 4562 Waterhouse Road Clay, New York 13041 (315) 622-3402 800 448-7474 FAX (315) 622-3800 Copyright © 2000 Eagle Comtronics, Inc. All Rights Reserved.