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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 Σ 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.
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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. |
| 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 |
50Ω, unbalance |
| INHIBIT Input Signal |
TTL level |
| MAX. Input Level |
±10VDC or less, 3.5Vrms or less |
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| Measuring section |
| Jitter Measuring Range |
±0.5T 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±0.3dB (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) |
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| Indication Section |
| Indicating System |
Percent(%) Indication by the meter and LCD display in SIGMA mode |
| • Range |
13% and 20% |
| Measuring accuracy |
| • Meter Display |
13% : ±0.5(%) of the indication (3% to 13%)
20% : ±1.0(%) of the indication |
| • Digital Display |
Less ±(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. |
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| Output / Input Section |
| RECORDER |
0.1V/% ±50mV (open circuit) |
| 600Ω±10% |
| REMOTE |
ALL functions on the panel except PRESET are externally controllable |
| INHIBIT |
| • Input Level |
TTL level |
| • Logic |
Active LOW (Logic selection is availabl) |
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| Factory Option |
| EQUALIZER |
Limit Equalizer Conforms to
Blu-ray Disc Standards
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Part.1, Ver.1.0)
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| • EQUALIZER Output |
0.5Vp-p at 50Ω load |
| JITTER Output |
10% at 0.1Vrms at 50Ω load |
| DATA Output |
0.25Vp-p at 50Ω load |
| CLOCK Output |
0.25Vp-p at 50Ω load |
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| 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)×154(H)×130(D)mm |
| Weight |
Approx. 2.0kg |
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Specifications are subject to change without notice. |
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