BLONDER TONGUE Integrated Receiver / Descrambler IRD Series G E N E R A L I R D - 6 1 8 5

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Integrated Receiver / Descrambler IRD Series G E N E R A L I R D - 6 1 8 5 - R S

[Image] The IRD-6185-RS is a professional quality, high performance, commercial satellite receiver with an integrated VideoCipher®** II RS descrambler module. This receiver is C and Ku band compatible, accepting signals in from 950 to 1450 ( a ) . Frequency selection is accomplished via front panel push button switches, supporting both C band transponder and direct frequency settings.

The receiver offers two modes of synthesized frequency control. A high-stability quartz crystal reference mode, with a 1 MHz tuning increment, allows for optimizing the receiver's TI immunity. An AFC mode is also included, which provides tracking of the LNB frequency drift of the input signal. An ultra-stable phase locked loop demodulator features superior threshold extension. This design delivers excellent picture quality, even under weak signal conditions. The IRD-6185-RS can be set to one of two aural subcarrier modes: fixed (6.8 MHz) and variable (5.4 to 8.2 MHz). An external 70 MHz IF loop allows TI filters to be insert-ed as needed. The IF loop comes with a standard 32 MHz IF bandwidth filter installed (optional filters are external).

The IRD-6185-RS is housed in a single height, 1.75" high, rack mountable, steel chassis. The front panel design allows front of rack access to the descrambler module, battery replacement, authorization number, and renewable security (RS) card, without removing the IRD-6185-RS from its rack mounting. LNB power is multiplexed on the RF input connector, eliminating the need for external power inserters. User friendly controls (video polarity, on-screen display, fine tuning, audio and video level) and indicators (signal strength, sync, authorization, and bypass) simplify installation. Features required for General Instrument compliancy are also provided, including a ganged audio (stereo L/R and mono) level control, audio mode switch for calibrated factory or variable audio level, and an automatic resetting thermal breaker for the LNB power.

NOTES:

(a) standard frequencies for the U.S. are 950 to 1450 MHz, receiver is capable of tuning frequencies 950 to 1750 MHz

(b) @ -60 dBm RF input level

(d) referenced to standard 75 µs de-emphasis

(e) only one aural subcarrier mode can be invoked at one time, either fixed or variable mode

(f) without VideoCipher® II RS module ** VideoCipher® is a registered trade mark of General Instrument Corp.

SPECIFICATIONS IRD-6185-RS

R #6185A Units Frequency Range: 950 to 1450 (a) M H z Tuning Increment: 1 M H z Input Level: -60 to -25 d B m Image Rejection: 4 5 d B I m p e d a n c e : 7 5 OHM I F F r e q u e n c y : 7 0 M H z B a n d w i d t h : 32 (18, 20, 25 optional) M H z L e v e l : -10 (b) d B m Static Threshold C/N: < 8 . 0 d B I m p e d a n c e : 7 5 OHM

V I D E O

Frequency Response 30 Hz to 3.58 MHz: ± 0 . 5 0 3.58 MHz to 4.2 MHz: ± 0 . 7 5 Output Level: 1.0, ±3 dB adj. V p-p F o r m a t : NTSC, negative sync D e - E m p h a s i s : CCIR 405-1, 525 lines P o l a r i t y : standard or inverted Differential Gain: <3 (c) % Differential Phase: <3 (c) ° C h r o m i n a n c e / L u m i n a n c e Intermod Distortion: 3 % Gain Inequality: ±5, max I R E Delay Inequality: ± 2 6 n s D i s t o r t i o n Short Ti m e : < 3 % Line Ti m e : < 2 % Field Ti m e : < 3 % Dispersion Removal: > 4 0 d B

A U D I O

Frequency Range: 20 Hz to 15 kHz Frequency Response: ± 1 . 0 d B Output Level: 0 preset, +16 dBm max d B m Output Level Range: 0 to 12 d B Stereo L-R Separation: 7 5 d B Signal-to-Noise Ratio: 8 0 d BHarmonic Distortion: <1.0 (d) % I m p e d a n c e : 600, balanced W

SUB-CARRIER AUDIO

F r e q u e n c y F i x e d : 6.8 (e) M H z Va r i a b l e : 5.4 to 8.2 (e) M H z B a n d w i d t h : 3 3 0 k H z D e - E m p h a s i s : 7 5 µ s

Power Requirements Vo l t a g e : 117, ±10% VA C F r e q u e n c y : 6 0 H z P o w e r : 24 W 15 (f) W

LNB Supply (Switchable) Vo l t a g e : 17, min V D C C u r r e n t : 250, max m A F u s e : 3 / 8 A Temperature Range: 0 to +50 ° C

M E C H A N I C A L

Dimensions (WxHxD): 19.0 x 1.75 x 19.0 i n . (483 x 44 x 483) m m

We i g h t : 16 lbs. (7.27 kg)

CONTROLS (Front Panel) Frequency Selection: Push Button Switches Video Polarity (NORM/INV): Slide Switch Tuner Reference (XTA L / A F C ) : Slide Switch AFC Fine Tu n i n g : C o n t r o l Audio Subcarrier Select (6.8/VA R ) : Slide Switch Audio Subcarrier Tu n i n g : C o n t r o l On Screen Display - OSD (OFF/ON): Slide Switch

R e c e s s e d CONTROLS (Rear Panel) LNB Power (ON/OFF): Slide Switch Video Level: C o n t r o l Audio Level Mode (FIXED/VA R ) : Slide Switch Audio Level (MONO/LEFT/RIGHT): Control, ganged

I N D I C ATORS (Front Panel) Power ON: LED, green Signal Strength OK: LED, green S y n c : LED, green A u t h o r i z a t i o n : LED, green B y p a s s : LED, red

CONNECTORS (Rear Panel) RF Input/LNB Power: "F" type, female 70 MHz IF Output: "F" type, female 70 MHz IF Input: "F" type, female Video Output, Composite: "F" type, female Video Output, Standard: "F" type, female Audio Output Mono +/-: Terminal Strip Left +/-: Terminal Strip Right +/-: Terminal Strip G r o u n d : Terminal Strip Data +/-: Terminal Strip Clock +/-: Terminal Strip L a n g u a g e : Terminal Strip ORDERING INFORMATION:

IRD-6185-RS Stock No. 6185A

IRD-6185-RS-L IRD WITH RF LOOP THRU Stock No. 6185A-L

6185A IRD-6185-RS Options Available: 01 (IF BANDWITH) EXTRA

6185A-L IRD-6185-RS-L Options Available: 01 (IF BANDWITH) EXTRA

6190 IRD-6185-MF Options Available: 01 01 (IF BANDWITH) EXTRA

6460 IRD-6185-OPT 01 Option 01: IF Bandwidth (18,20, and 25 MHz Filters Available)

FEATURES:

MATV Quality, Commercial Satellite IRD Integrated VideoCipher®** II RS Descrambler Module C and Ku Band Compatible -950 to 1450 M H z

Push Button Tuning - C Band Transponder & C/Ku Band Direct Frequency Synthesized Frequency Control External 70 MHz IF Loop For Easy TI Management Front Panel Design Allows Easy Access to Descrambler Module, Replaceable B a t t e r y, Authorization Number, and RS Card Complete Set of Indicators and Controls Rack Mount - 1 EIA(1.75") Spacing Rugged Steel Chassis with Aluminum Cover

RF looP thru (6185A-LOnly)

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