MWJ-6393 BD Jitter Meter

* End of production
mwj6393

This MWJ-6393, Bul-Ray Disc Jitter Meter is designer for measuring and indicating the jitter conponents of the data signals (1-7 modulation signals) from Bui-ray Discdrives employed as input signals and the clock signal extracted by the internal PLL circuit employed as a reference signal.
It has the conventional equalizer as standard and the boost level of it can be adjustable.
The inhibit function is provided to inhibit jitter measurement of faulty section.
It is indicated the measured jitter values by percent (%) of the £U values of each measured jitter value with the clock cycle enployed as a reference.
It can also indicate whether measured values are acceptable or not by means of GO or NO LED lamp by presetting a criterion value.

FEATURES

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Conventional equalizer provided as standard
The conventional equalizer conforming to Blu-ray Disc standards is provided and the boost level can be adjustable. The measurements of the media with 23.3GB, 25.0GB and 27.0GB are possible by the setting value.

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Offset-scale meter (3% to 13%)
To adopt an Offset-scale meter, the efficient measurement can be done in one range.

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Jitter value indicated with %
The unit converts a time difference between a data signal and the clock into a sigma value and indicates its jitter quantity as the percentage to the clock cycle on the meter.

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The polarity of the measurement
It can select either + or - edge of the data signal, and also select +, - or +/- edge for jitter measurement.

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INHIBIT function
The inhibit function is provided to inhibit jitter measurement of faulty section.

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GO/NO judgment
A GO/NO result is indicated in relation to a preset jitter value.

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Auto frequency compensation circuit
Since an automatic frequency compensation circuit is provided, the jitter value can be read by a percent value accurately even if the clock frequency changes.

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2T Rejection function
It can measure jitter values without 2T signal requested by Dual layer Disc measurement.

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Panel-lock function
The panel-lock function is provided to preserve the measurement setting conditions.

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Remote control function
The DATA EDGE, RANGE, LIMIT EQ. & 2T REJ. function on the front panel can be remote-controlled by control signals.

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Limit equalizer as option
The limit equalizer is available as option.

SPECIFICATIONS

 Input section

Input Signal

1-7 modulation signals with 64MHz to 68MHz as reference clock frequency.

Clock Frequency

66MHz

Clock Frequency Range

64MHz to 68MHz

Input Level Range

0.1Vp-p to 1.0Vp-p

Input Impedance

50£[, unbalance

INHIBIT Input Signal

TTL level

MAX. Input Level

¡Ó10VDC or less, 3.5Vrms or less

 Measuring section

Jitter Measuring Range

¡Ó0.5T to the clock edge

Reference Clock

Internal PLL clock

Measuring Data Edge

+, - or +/- (selectable)

Equalizer

Conventional, Limit Equalizer

• Frequency Characteristion

Conforms to Blu-ray Disc Standards(Part.1 Ver.1.0)

• Standard Setting

+5.8dB¡Ó0.3dB (16.5MHz - 200kHz @66MHz)

• Variable Range

0dB, 2.3, 2.6, 2.8, 3.0, 3.3, 3.6 to 9.0dB
0.2dB step from 3.6 to 90dB

• Group Dley Characteristion

Max. 2ns (3MHz to 16.5MHz)

 Indication Section

Indicating System

Percent(%) Indication by the meter and LCD display in SIGMA mode

• Range

13% and 20%

Measuring accuracy

• Meter Display

13% : ¡Ó0.5(%) of the indication (3% to 13%)
20% : ¡Ó1.0(%) of the indication

• Digital Display

Less ¡Ó(3% of reading + 20 digits)

Indicating Method

Percent indication by an analog meter and LCD

LCD Digital Display

• Indication Resolution

0.01

• Renewal cycle

Approx. 1 cycle per second

Judgement Indication

Preset value and measured value are compared and the judgement result is indicated by LED.

 Output / Input Section

RECORDER

0.1V/% ¡Ó50mV (open circuit)

600£[¡Ó10%

REMOTE

ALL functions on the panel except PRESET are externally controllable

INHIBIT

• Input Level

TTL level

• Logic

Active LOW (Logic selection is availabl)

 Factory Option

EQUALIZER

Limit Equalizer Conforms to Blu-ray Disc Standards
( Part.1, Ver.1.0)

• EQUALIZER Output

0.5Vp-p at 50£[ load

JITTER Output

10% at 0.1Vrms at 50£[ load

DATA Output

0.25Vp-p at 50£[ load

CLOCK Output

0.25Vp-p at 50£[ load

 Others

Operating Temperature Range

   0ºC to +40ºC

Guarantee Temperature Range

+15ºC to +35ºC

Power requirements

AC100 /120-220/240V, 50 / 60Hz 15VA

Dimentions

240(W)¡Ñ154(H)¡Ñ130(D)mm

Weight

Approx. 2.0kg

*

Specifications are subject to change without notice.