HP 11759D Dynamic Ghost Simulator, 50 MHz to 1000 MHz

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The HP 11759D dynamic ghost simulator easily simulates the ghosting and airplane flutter that commonly degrade terrestrial TV broadcasts. With the HP 11759D, ghost canceller or digital HDTV designs can be tested under the real-world conditions of multiple reflections and motion. The simulation of motion is required to account for the effects of tower sway, airplane flutter, and the movement of people, vehicles, and trees. The HP 11759D is ideally suited to simulate these phenomena. The HP 11759D consists of the applications software and the RF processing hardware and requires two user-supplied components to complete the dynamic ghost simulation system-a PC acting as a user interface and a synthesized local oscillator with a 10 MHz timebase output. On-screen menus guide the user through the task of creating complex RF multipath ghost signals for testing ghost cancelling systems or digital HDTV receivers. These same menus are accessed remotely by installing an optional HP-IB interface card in the PC.


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Partial Specifications

(See technical data sheet for complete specifications)

RF Characteristics

RF Channels: 1 of 6 paths RF Frequency Range: 40 to 1000 MHz (useable to 2700 MHz) RF Bandwidth (1 dB): >6 MHz, typical RF Input Level: -10 dBm (+97 dBµV), nominal

Path Characteristics

Path Insertion Loss: 24 dB ± 3 dB, typical Path Delay Range: 0 to ± 186 µs Maximum Delay Spread: 186 µs Path Attenuation Range: 0 to 50 dB in 0.1 dB steps Relative Phase Between Paths: Adjustable 0 to ± 360°, 0.1° steps Simulated Doppler Range: 0 to 425 Hz, in 0.01 Hz steps

For NTSC Modulated Signals

Chrominance-to-Luminence Delay Inequality: <10 ns, typical Chrominance-to-Luminence Gain Inequality: <4%, typical Differential Phase Distortion <1 degree, typical Differential Gain Distortion: <1%, typical

General Characteristics

Power: 90 to 132/190 to 264 V 48 to 66 Hz 325 VA, maximum Size: 425 mm W x 146 mm H x 620 mm D (16.8 in x 5.7 in x 24.4 in) Weight Net: 13.6 kg (30 lb) Shipping: 19 kg (42 lb)


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HP 11759D     Dynamic Ghost Simulator, 50 MHz to 1000 MHz
   Opt 002    Rear Panel Only RF Connectors
   Opt 907    Front Panel Handle Kit
   Opt 908    Rack Mount Flange Kit
   Opt 909    Rack Mount Flange Kit with Handles
   Opt 910    Extra Operating and Service Manual
   Opt W30    3 Year Return-to-HP Service
   Opt W50    5 Year Return-to-HP Service


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