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

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.

[ Features ]

Simulates realistic propagation models for analog and digital television
40 to 1000 MHz
RF Bandwidth >6 MHz
Doppler from ±0.01 to ±425 Hz
Phase shifts to ±360°
Delay interval to ±186 µsec with 1 ns resolution
12-Bit processing for low noise/distortion

[ Specifications ]

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)

[ Ordering ]

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

[ Key Literature ]