company logo Leader LE1871
Digital Processing Jitter Meter
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Leader LE1871
Digital Processing Jitter Meter




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  Leader LE1871

Features:
  • 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 standards The Conventional Equalizer conforming to Blu-ray Disc standards is provided.The boost level of Conventional Equalizer can be varied.
  • Digital processing method for quick and accurate measurement Root-mean-square value calculation using digital processing method enables quick and accurate measurements.
  • 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 as %. Jitter component with respect to the clock signal is displayed as a 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.



  Description

The LE 1871 Jitter Meter is designed to measure the jitter conforming to Blu-ray Disc (Part 1, version 1.0, June 2002) standards. Combining time interval analyzer TIA as well as digital processing methods for jitter measurement, enables accurate measurement with high throughput for adjusting and inspecting optical pickups on production lines. Since the Limit Equalizer, applicable to x2 speed of Blu-ray Disc standards, PLL clock regenerator, and jitter measurement sections are provided as standard, the x2 speed of HF signal output from a pickup can be directly applied to this instrument for measuring jitter. A large LCD panel displays jitter and histogram analysis makes this instrument ideal for production and inspection applications, as well as R&D. Jitter measurement units for a DVD/CD or HFM are optionally available.Thus, multiple jitter formats of standard DVD/CD and HF/HFM for the new Blu-ray Disc can be measured using a single unit. Optional GPIB and LAN interfaces are available for constructing an automatic measurement system and to ensure quality control.

Model Description List Price Sale Price
LE1871 Digital Processing Jitter Meter $5495.00
Instant
* Price Quote *
Model Accessories List Price Sale Price
LE1871-OP70 Limited Equalizer for Blu-ray HF Option for LE1871 $995.00
Instant
* Price Quote *



  Specifications

Input Section
HF INPUT (1-7 modulation signal input)
Input Coupling AC
Measurement Voltage Range 0.1 to 2.0 V p-p
Input Range 3 ranges
0.3 V range 0.1 to 0.3 V p-p
0.9 V range 0.3 to 0.9 V p-p
2.0 V range 0.9 to 2.0 V p-p
Input Impedance 50 Ω
Auto Slicer Response time constant: 10 kHz
Maximum Input Voltage ± 2.5 V
Measurement Control (ARMING IN/INHIBIT IN)
Input Impedance 10k Ω
Input Signal Level 0/+5 V
Maximum Input Voltage -0.7 V/+5.7 V
Equalizer Section
Conforms to Blu-ray Disc (Part 1, version 1.0) standards
Applicable format 1-7 PP modulation
Channel Bit Rate 66 MHz
Equalizer Mode Conventional Equalizer Mode
Gain Variable Range 0 to 8 dB (36 steps)
Gain Accuracy ±0.5 dB
Group Delay Deviation [2.0 nsp-p (5.8 dB: 3 MHz to 16.5 MHz)
Jitter Measurement Section
Applicable Speed Clock frequency: 66 MHz ±4 %
Measurement Mode DATA to CLOCK
DATA to CLOCK 2T eliminate mode
Measurement Resolution 25 ps
Unit Displayed % (Sigma value with respect to clock period)
Measurement Accuracy
Meter Indication ± 5% of full scale ± residual jitter
Digital Display ± 5% ± residual jitter
Polarity Section
CLOCK fixed
Measurement Time Constant 0.04 s to 5 s
Measurement Control Section (ARMING/INHIBIT function)
Measurement Control Mode ARMING mode/INHIBIT mode
Electrical Characteristics
Input Impedance 10k Ω
Input Signal Level 0/+5 V
Maximum Input Voltage -0.7 V/+5.7 V
INHIBIT
ENABLE HIGH/LOW
COUNT 0 to 50, in 1 steps
ARMING
SLOPE RISE/FALL
COUNT 0 to 50, in 1 steps
START DLY 0 to 99.99 ms (in 0.01 steps min.)
LENGTH MODE SAMPLE/TIME
LENGTH 0.01 to 99.99 ms (in 0.01 steps min.)(TIME only)
Clock Regenerator (DATA to CLOCK mode only)
Regenerates reference clock signal from DATA signal input.
HF 66 MHz ± 8%
Clock Frequency Measurement Section (DATA to CLOCK mode only)
Measurement Range 60.72 MHz to 71.28 MHz
Measurement Accuracy ± 0.1%
Judgement Section
Outputs GO/NO GO results of jitter and frequency measured with respect to the preset value.
GO/NO GO LED Indicates results corresponding to meter indications.
Dedicated Remote
Control Connector Outputs judgement results for jitter measurement.
Output Section
MONITOR OUT To Monitor the HF Signal Input
Output Impedance 50 Ω
Output Amplitude Up to 2.0 V p-p ± 30%
(into 50 Ω, in proportion to input signal)
Output Connector BNC
EQUALIZER OUT
To Monitor the HF signal input.
Output Impedance 50 Ω
Output Amplitude 0.8 V p-p ± 30% (into 50 􀀍)
Output Connector BNC
DIGITAL OUT (DATA, CLOCK)
Outputs binary DATA signal and clock signal regenerated by PLL.
Output Signal DATA signal, CLOCK signal
Output Amplitude 0.15 V p-p (into 50 􀀍)
Output Offset Voltage 0.34 V (into 50 􀀍)
Output Connector BNC
DC OUT
Output Voltage 0.05 V/%
Output Accuracy ± 2%
GATE MONITOR
To monitor arming/inhibit control signals.
Output Amplitude TTL Level
Output Impedance 1k Ω
Remote Control Section
Dedicated Remote Control Connector Communicates judgement results and front panel settings.
Input Level 0/5 V (pulled-up with 47k Ω resistor)
Maximum Input Voltage -0.7/+5.7 V
Judgement Results Output Pins GO: 5 V (open drain output, pulled-up with
47k Ω resistor)

NO GO
0 V
Maximum Current Output 10 mA
RS-232C Interface
Communication Controls function, outputs data.
Baud Rate 38400 bps max.
General Specifications
Operating Temperature : 0 to 40° C
Humidity : 85% RH (without condensation)
Spec-Guaranteed Temperature : 10 to 30° C
Humidity : 85% RH (without condensation)
Operating Environment Indoor Use
Operating Altitude Up to 2,000 m
Overvoltage Category II
Pollution Degree 2
Power Requirements 90 to 250 VAC, 50/60 Hz
Max. 55 W, 80 VA max
Dimension (WxHxD) 83/8 x 51/4 x 1113/16 in.
213 x 132 x 300 mm
Weight 8.8 lbs., 4.0 kg
Accessories Power Cord: 1
Instruction Manual 1
Option OP70 Limit Equalizer (For Blu-ray HF)
Conforms to Blu-ray Disc (part 1, version 1.0 standards)
Applicable Format 1-7 PP modulation
Channel Bit Rate 66 MHz
Equalizer Mode Conventional Equalizer Mode or Limit, Equalizer Mode, selectable
Gain Variable Range 0 to 8 dB (36 steps)
Gain Accuracy ± 0.5dB
Group Delay Deviation 2.0 nsp-p (5.8 dB: 3 MHz to 16.5 MHz)
Option OP71 DVD/CD Measurement
Input Section DATA INPUT (EFM/8-16 modulation signal input)
Input Coupling AC (2 Hz/1 kHz, selectable)
Measure Voltage Range 50 mV to 5 Vp-p
Input Impedance 1M Ω/50 Ω, selectable
Slice Level VARIABLE ± 2.5V
AUTO (ASYMMETRY ON) 20 Hz/1 kHz/5 kHz/10 kHz, selectable
Maximum Input Voltage ± 5V
Applicable Speed DVD: Clock Frequency
x1 speed: 27 MHz ± 10%
x2 speed: 54 MHz ± 10%
CD: x1, x2, x4, x8, x10, x12 speed
Measurement Mode DVD: PERIOD mode, sum of all -T data in PERIOD mode, PULSE WIDTH mode, sum of all -T data in PULSE WIDTH mode,DATA to CLOCK
CD PULSE WIDTH mode, sum of all -T data

in PULSE WIDTH mode Unit Displayed : ns,%
Measurement Resolution 50 ps
Display Resolution 0.01 ns
Measurement Accuracy Sigma Value ±4 % ±0.15 ns
Average Value: ±1 ns
Option OP73 GPIB (IEEE 488.2)
Function Transfers data, controls front panel settings.
Option OP74 LAN
Function Transfers data, controls front panel settings.




 

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