MEGURO logo
PRODUCTS

Meguro Electronics Corporation was merged by Keisoku Giken Co., Ltd.◆Detail PDF

information product company contact quality
sidemenu_00 sidemenu_01 sidemenu_02 sidemenu_03 sidemenu_04 sidemenu_05 sidemenu_06 sidemenu_07 sidemenu_08 sidemenu_09 japanese chinese Home
     

category_03

MWJ-6392E DVD Jitter Meter

mwj6392e

The MWJ-6392E is designed for measuring and indicating the jitter components of the data signals with internal PLL clock signal employed as a reference signal from RF signals of DVD, DVD-ROM and other relative devices.
It indicates the measured jitter values by percent (%) in the SIGMA mode and can select either + , - or + /- edge of the data signals as the reference trigger clock edge.
It has the digital equalizer circuit which is adjustable according to the characteristics of Pick-ups, and the INHIBIT function is provided to inhibit jitter measurement of faulty section.
In addition, it indicate whether measured values are acceptable or not by GO or NO-GO lamp by presetting a criterion value.


FEATURES

It has the digital equalizer circuit which is adjustable according to the characteristics of Pick-up.
The jitter quantity can be directly read by the meter and LCD indicator.
This unit converts a time difference between a data signal and the clock into a sigma value and indicated its jitter quantity as the percentage to the clock cycle on the meter indicator.
Changes in the jitter can be read continuously, due to T/V conversion method of measurement.
It can select either + or -edge of the data (EFM Plus) signal as the trigger edge, and also select +, - or +/- edge for jitter measurement.
The INHIBIT function is provided to inhibit jitter measurement of faulty section.
A GO/NO-GO result is indicted in relation to a preset jitter value.
The panel-lock function is provided to set measuring conditions.
A remote control function is provided.

SPECIFICATIONS

 Input Section
DATA Input Signal EFM Plus signal (RF or Binary signal)
Input Impedance Approx. 1MΩ, unbalanced
Input Capacity 25pF or less
Input Signal Level 0.1Vp-p to 2Vp-p
Clock Frequency Range 25.5 to 28.5MHz
INHIBIT Input Signal TTL level

 Jitter Measurement
Indication

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

Measuring Range 0 to 10% and 0 to 20% in two ranges
Jitter Measuring Range ±0.5T to the clock edge
Measuring Accuracy
• Meter Display ±5% of full scale
• Digital Display ±(3% of reading +20 digits), Min. resolution; 0.01%
• Reference Clock Internal PLL clock
Measuring Data Edge +,-, or + /-(selectable)
Equalizer (only for RF)
• Frequency Characteristics In conformity to JIS×6241
• Standattird Seng +3.2dB ±0.3dB (5.16MHz -200kHz @27MHz)
• Range 0 to 7dB 0.2dB step
• Group Delay Characteristics Max. 5ns
Low Pass Filter Characteristics 6th Bessel Fc = 8.46 MHz
Slicer Characteristics In conformity to JIS×6241
PLL Characteristics In conformity to JIS×6241

 Output Section
RECORDER Output 1VDC ±5% at full scale with open end
MONITOR Output -6dB ±1dB to input signal level at 50Ω load
REMOTE Output

DATA EDGE, RANGE, EQUALIZER on/off modes on the panel are externally controlled


 Optional output terminals on the rear panel
EQUALIZER Output Approx. 0.65 V p-p at 50Ω load
JITTER Output 0.1 V rms. ±10% at 50Ω load
DATA Output 0.5 V p-p at 50Ω load
CLOCK Output 0.5 V p-p at 50Ω load

 General Data
Operating temperature range +5ºC to +40ºC
Power requirements AC 100/120V to 220/240V ; 15VA
Dimensions Approx. 240(W)×154(H)×130(D) mm
Weight Approx. 2.05kg

* Specifications are subject to change without notice.

totop

Copyright© 1999 MEGURO ELECTRONICS CORPORATION All Rights Reserved.