LE 1871
DIGITAL PROCESSING
JITTER METER

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Applicable to Blu-ray Disc, Ideal for Adjusting and Inspecting Optical Pickup on the Production Line (Dedicated for x1 Speed)

The LE 1871 Jitter Meter is designed to measure the jitter conforming to Blu-ray Disc (Part 1, version 1.0, June 2002) standards. Since the Conventional Equalizer, PLL clock regenerator, and jitter measurement section are provided as standard, HF signal output from a pickup can be directly applied to this instrument for measuring jitter. Using digital processing method as well as a TIA is used for the jitter measurement, quick and accurate measurement can be performed. A large meter and LED panel allow this instrument ideal for production and inspection applications, as well as R&D. The Limit Equalizer for Blu-ray Disc and various jitter measurement units for a DVD/CD or HFM are optionally available. Thus, jitter of DVD and CD, and HF and HFM of Blu-ray Disc can be measured using a single unit. Optional GPIB and LAN are convenience to construct an automatic measurement system and ensure quality control.

[Features on Blu-ray Disc measurement]

• Applicable to three types of disc capacity (x1 speed)
  Jitter of Blu-ray Disc with disc capacity of 23.3 GB, 25.0 GB, and 27.0 GB can be measured.
• Equipped with Equalizer conforming to Blu-ray Disc stan- dards
  The Conventional Equalizer conforming to Blu-ray Disc standards is provided.
  The boost level of ConventionalEqualizer can be varied.
• Digital processing method for quick and accurate measurement
  Root-mean-square value calculation using digital processing method enables quick and accurate measurement.
• Measures the jitter of all-T components conforming to Blu- ray Disc standards
  Measures all components of 2T to 8T and 9T of the HF (DATA) signal with respect to the CLOCK signal, then displays it as jitter in sigma format.
• Displaying jitter in unit of %
  Jitter component with respect to the clock signal is displayed in unit of percentage (%). No clock period setting is required since the clock is automatically regenerated from the HF (DATA) signal. Measurement will be made correctly even when the HF (DATA) signal deviation is 4%.
• Three polarity modes
  Rising edge, falling edge, and both edges of DATA signal can be selected.
• Applicable dual-layer disc
  The 2T component can be eliminated in DATA to CLOCK measurement mode used when inspecting a dual-layer disc.