LeCroy Technical Seminar WaveExpert April 13, 2005 LJDN-ST-WE-0204-0001 WaveExpert WaveExpert WaveExpert NRO WaveExpert LeCroy Japan, May 13, 2005 Page 2 Page 1
WaveExpert LeCroy Japan, May 13, 2005 Page 3 SONET/SDH: 10 GB / 40 GB+ Fibre Channel 4x, 8x (4.25, 8.5 Gb/s) PCIE Gen(2) 5 Gb/s SATA Gen(3)/SAS2 10 Gigabit Ethernet PRBS(12.5 Gbps ) TDR (20 ps ) LeCroy Japan, May 13, 2005 Page 4 Page 2
Wave Expert Fibrechannel 4X, 8X PCI Express Gen II (5 Gb/s) SATA/SAS 6 Gb/s SONET/SDH 10 Gb/s, 40 Gb/s FB-DIMM 4.8 Gb/s, 9.6 Gb/s OIF CEI XFP LeCroy Japan, May 13, 2005 Page 5 WaveExpert NRO Wave Expert LeCroy Japan, May 13, 2005 Page 6 Page 3
100 GHz @50 10 MS/s 2 : (CIS) ( SEQ ) 4 M (512 M) Real-time scope interface/capabilities 12.5 Gbps PRBS 13.5 Gbps (/ ) 20 ps TDR : 1.8 ps RMS : 600 fs RMS : 200 fs RMS LeCroy Japan, May 13, 2005 Page 7 WaveExpert 4 WaveExpert WE9000 CIS CIS WaveExpert NRO9000 NRO CIS SDA ( ) WaveExpert SDA100G SDANRO CIS SDA ( ) (< 200fs RMS) LeCroy Japan, May 13, 2005 Page 8 Page 4
WaveExpert 125 34 LeCroy Japan, May 13, 2005 Page 9 SE-100 100 GHz 40Gbps ( /) 1mm 4 ps LeCroy Japan, May 13, 2005 Page 10 Page 5
SE-70 70 GHz 10Gbps 1.85mm (V connector) 5 ps LeCroy Japan, May 13, 2005 Page 11 SE-50 & SE-30 12.5 Gbps 2.92 mm (K connector) 7 ps (SE-50) 11 ps (SE-30) LeCroy Japan, May 13, 2005 Page 12 Page 6
ST-20 10Gbps TDR/TDT 2.92 mm (K connector) 18 ps rise time 700 uv RMS 20ps TDR LeCroy Japan, May 13, 2005 Page 13 SO-50 12.5 Gbps, 50GHz 1280-1620nm +17dBm 80 uw LeCroy Japan, May 13, 2005 Page 14 Page 7
SO-25 12.5 Gbps, 28GHz 1280-1620nm +17dBm 40 uw LeCroy Japan, May 13, 2005 Page 15 Optical Heads SO-10 11.1 Gbps 10GHz 750-1650nm -2 dbm to - 17dBm 2 uw RMS (17 ) LeCroy Japan, May 13, 2005 Page 16 Page 8
Optical Reference Receiver Kit - Serial Bus (10) 1.063Gbps FC 1x 1.250Gbps GbE 2.125Gbps FC 2x 2.500Gbps 2GbE 3.125Gbps 10Gbe x4 4.250Gbps FC 4x 3.188Gbps 10GFC x4 10.31Gbps 10G Base-R 10.52Gbps 10GFC 11.10Gbps 10GbE FEC Optical Reference Receiver Kit - SONET/SDH (7) 155Mbps OC-3/STM1 622Mbps OC-12/STM4 2.488Gbps OC-48/STM16 3.320Gbps VSR5-3318 9.955Gbps OC-192/STM64 10.66Gbps G.975 FEC 10.71Gbps G.709 LeCroy Japan, May 13, 2005 Page 17 CDR-O125 12.5 Mbs-2.5 Gbps 9.95 Gbps-12.5 Gbps USB CDR-E135 622 Mbps-8 Gbps Option 13.5 Gbps LeCroy Japan, May 13, 2005 Page 18 Page 9
2.45-2.875 Gbps 4.9-5.75 Gbps 9.8-11.5 Gbps 10 Mbps-12.5 Gbps (20 80%) 30 ps LeCroy Japan, May 13, 2005 Page 19 WaveExpert TDR LeCroy Japan, May 13, 2005 Page 20 Page 10
SDA LeCroy Japan, May 13, 2005 Page 21 LeCroy Japan, May 13, 2005 Page 22 Page 11
UI LeCroy Japan, May 13, 2005 Page 23 LeCroy Japan, May 13, 2005 Page 24 Page 12
73 RZ (return to zero) NRZ (nonreturn to zero) LeCroy Japan, May 13, 2005 Page 25 T T L R max top high mid low base min LeCroy Japan, May 13, 2005 Page 26 Page 13
20% 20% 100% ( (T L T R ) 100% ) LeCroy Japan, May 13, 2005 Page 27 Track of Statistics ( ) LeCroy Japan, May 13, 2005 Page 28 Page 14
,,,, 1, 0,,,, Q,,, LeCroy Japan, May 13, 2005 Page 29 : 10% level 90% level 10% 90% LeCroy Japan, May 13, 2005 Page 30 Page 15
TDR (2 ) V, ρ, Ω, (DFP2) LeCroy Japan, May 13, 2005 Page 31 TDR : LeCroy Japan, May 13, 2005 Page 32 Page 16
TDR V reflected edge occurs LeCroy Japan, May 13, 2005 Page 33 TDR : 10062100 LeCroy Japan, May 13, 2005 Page 34 Page 17
TDR: LeCroy Japan, May 13, 2005 Page 35 TDR TDR LeCroy Japan, May 13, 2005 Page 36 Page 18
2 Trigger(DC 5GHz ) Prescale(AC) CIS125MHz Prescale62.5MHz 125MHz Trigger LeCroy Japan, May 13, 2005 Page 37 2.92mm(K ) TDR, 1MHz Trigger Level Slope LeCroy Japan, May 13, 2005 Page 38 Page 19
Front Panel TDR Trigger Trigger level setting Sequential Timebase prescale DC block 1/N CIS Timebase LeCroy Japan, May 13, 2005 Page 39 WaveExpert NRO NRO (Near Realtime Oscilloscope) LeCroy Japan, May 13, 2005 Page 40 Page 20
Wave Expert Near Real time Oscilloscope (NRO) ATA (Accelerated Throughput Architecture) GUI 100 125K LeCroy Japan, May 13, 2005 Page 41 NRO DC- 100GHz signal Clock Recovery data sampler CIS Data Stream clock CIS Synchronizer 10 Ms/s Sample strobe CIS Reconstruction Process and Display ATA LeCroy Japan, May 13, 2005 Page 42 Page 21
NRO LeCroy Japan, May 13, 2005 Page 43 CIS 512M LeCroy Japan, May 13, 2005 Page 44 Page 22
10Ms/s 75 10 33 M 10 371 K 33 M 17 LeCroy Japan, May 13, 2005 Page 45 LeCroy Japan, May 13, 2005 Page 46 Page 23
LeCroy Japan, May 13, 2005 Page 47 Xstream ISI MathCad TM, MatLab TM, VB script, Excel TM LeCroy Japan, May 13, 2005 Page 48 Page 24
LeCroy Japan, May 13, 2005 Page 49 LeCroy Japan, May 13, 2005 Page 50 Page 25
LeCroy Japan, May 13, 2005 Page 51 CIS 60 db 5 GHz/div LeCroy Japan, May 13, 2005 Page 52 Page 26
WaveExpert CIS LeCroy Japan, May 13, 2005 Page 53 & 14 bit A/D LeCroy Japan, May 13, 2005 Page 54 Page 27
OFF ON LeCroy Japan, May 13, 2005 Page 55 a A Pw LeCroy Japan, May 13, 2005 Page 56 Page 28
a A Pw LeCroy Japan, May 13, 2005 Page 57 a A Pw LeCroy Japan, May 13, 2005 Page 58 Page 29
a A Pw LeCroy Japan, May 13, 2005 Page 59 V ½V 0 LeCroy Japan, May 13, 2005 Page 60 Page 30
NLTL ( ) NLTL NTTL LeCroy Japan, May 13, 2005 Page 61 Response (db) 20GHz Sampling Head Response 1 0-1 -2-3 -4-5 -6-7 0 4 8 12 16 20 24 28 Frequency (GHz) Ideal 14 ps Pulse Measured Response of ST 20 LeCroy Japan, May 13, 2005 Page 62 Page 31
5.1 Gbps 12 GHz WaveExpert 20 GHz LeCroy Japan, May 13, 2005 Page 63 Real Time Scope A/D range Maximum signal Noise floor Sampling Scope A/D range A/D 14 bit A/D 2 V p-p A/D 1 LSB LeCroy Japan, May 13, 2005 Page 64 Page 32
Wave Expert 11 (CIS) WaveExpert NRO SDA 100G LeCroy Japan, May 13, 2005 Page 65 1ps LeCroy Japan, May 13, 2005 Page 66 Page 33
LeCroy Japan, May 13, 2005 Page 67 LeCroy Japan, May 13, 2005 Page 68 Page 34
LeCroy Japan, May 13, 2005 Page 69 Counter Counter Counter Counter Counter LeCroy Japan, May 13, 2005 Page 70 Page 35
@10GS/s PRBS Type PRBS7 127 bits 12.7 ns 78.7MHz PRBS10 1023 bits 102.3 ns 9.78MHz PRBS15 3,2767 bits 3.28us 305.2kHz PRBS23 8,388,607 bits 838.8us 1.19kHz LeCroy Japan, May 13, 2005 Page 71 : ( ) LeCroy Japan, May 13, 2005 Page 72 Page 36
Coherent Interleaved Sampling (CIS) 1 LeCroy Japan, May 13, 2005 Page 73 D1 δt 2δT 3δT 4δT 5δT 6δT D1+ δt D1: δt: SP1: =D1+ δt N1: =D1/δT Tm: =N1*(D1+ δt) δt LeCroy Japan, May 13, 2005 Page 74 Page 37
D1 δt 2δT 3δT 4δT 5δT 6δT D1+ δt D1: δt: SP1: =D1+ δt N1: =D1/δT Tm: =N1*(D1+ δt) δt LeCroy Japan, May 13, 2005 Page 75 ( ) T D2 δt 2δT 3δT D2+ δt D2: =2*D1 δt: SP2: N2: =2*D1/δT Tm2: =2*N1*(2*D1+ δt)=4*tm1 δt LeCroy Japan, May 13, 2005 Page 76 Page 38
( ) T D2 δt 2δT 3δT 4δT 5δT 6δT D2/2+ δt D2: =2*D1 δt: SP3: N2: =2*D1/δT Tm2: =N2/2*(D1+ δt)=tm1 δt LeCroy Japan, May 13, 2005 Page 77 1 Ts= * 8 2 Ts= * 8 1 = * 4 1 2 3 4 5 6 7 8 5 6 7 8 δt 1 2 3 4 5 6 7 8 Ts 1 2 3 4 Ts 5 6 7 8 M: 1 =8 δt=/m =/8 Ts= N/M * =N/8 * 3 Ts= * 8 4 Ts= * 8 1 = * 2 1 4 7 2 5 8 3 6 7 8 1 2 3 1 2 Ts Ts 4 5 6 7 8 3 4 5 6 7 8 5 Ts= * 8 6 Ts= * 8 3 = * 4 1 6 3 8 5 2 7 4 5 8 7 6 1 2 1 2 Ts Ts 3 4 5 6 7 8 3 4 5 6 7 8 7 Ts= * 1 8 7 6 5 4 3 2 8 8 Ts= * 8 8 1 = * 1 9 Ts= * 8 1 2 3 4 5 6 7 8 1 = (1 + ) * 8 1 2 1 1 Ts Ts 3 4 5 6 7 8 2 3 4 5 6 7 8 2 3 4 5 6 7 8 Ts LeCroy Japan, May 13, 2005 Page 78 Page 39
1. N/M 2. N/M 3. N/M 4. Ts=N/M * Period Ts=(A+N/M) * Period. 5. 1/M 6. (M-1)/M 7. Ts=(A+N/M) * PeriodA WaveExpert 10MS/s LeCroy Japan, May 13, 2005 Page 79 ( ) D2 T δt 2δT 3δT 4δT 5δT 6δT D2/2+ δt δt T =δt =δt D2: =2*D1 δt: SP3: T: 1 N2: =2*D1/δT Tm2: =N2/2*(D1+ δt)=tm1 Τ δt LeCroy Japan, May 13, 2005 Page 80 Page 40
Coherent Interleaved Sampling D T δt 2δT 3δT 4δT 5δT 6δT D/2+ δt δt δt δt D: δt: =T/M SP: T: 1 M: 1 L: =D/T N: =D/δT =M*L T LeCroy Japan, May 13, 2005 Page 81 δt 1 2 Ts 3 4 5 6 L: =5 (bit) = L * Bit Cell Time (S) M: = 8 δt= /M = /(M*L) = /40 Ts= N/(M*L) * =N/40 * 1 40 2 40 3 40 4 40 5 40 6 40 7 40 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 In case of 7/40 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Ts= (A+N/(M*L)) * 36 37 38 39 40 19 20 21 22 23 1 2 3 4 5 6 24 25 26 27 28 29 7 8 9 10 11 12 30 31 32 33 34 35 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 LeCroy Japan, May 13, 2005 Page 82 Page 41
Ts=(A+N/(M*L)) * Pattern Length N/(M*L) LeCroy Japan, May 13, 2005 Page 83 : 2.5Gbps PRBS7 L = 127 M = 512 B R = 2.5e9 Bit Cell Time=4e-10 Pattern Length = 5.08e-8 δt=4e-10/512 Target Ts = 1e-7 (A+(N/M*L))* δt *M*L =(A+(N/(512*127))*4e-10/512 * 127*512 =(A+N/65024)*4e-10 * 127 =(1+62976/65024)*5.08e-8 =1e-7 62976/65024=123/12762976 Ts=(1+62977/65024)*5.08e-8=1.0000078125e-7 S R = 1/1.0000078125e-7 = 9.99992189561MHz Sr=1/(1+62977/65024)*T*L=1/((1+62977/65024)*L) * Br LeCroy Japan, May 13, 2005 Page 84 Page 42
: 2.5Gbps PRBS15 L = 32767 M = 512 B R = 2.5e9 Bit Cell Time=4e-10 Pattern Length = 1.31068e-5 δt=4e-10/512 Target Ts = 1e-7 (A+(N/M*L))* δt *M*L =(A+(N/(512*32767))*4e-10/512 * 32767*512 =(A+N/16776704)*4e-10 * 32767 =(128000/ 16776704)*1.31068e-5 =1e-7 128000/16776704=250/3176762976 Ts=(128001/16776704)* 1.31068e-5 =1.0000078125e-7 S R = 1/1.0000078125e-7 = 9.99992189561MHz Sr=1/(128001/16776704)*T*L=1/((128001/16776704)*L) * Br LeCroy Japan, May 13, 2005 Page 85 CIS T T ~10MHz PLL (A*M*L+N)/M LeCroy Japan, May 13, 2005 Page 86 Page 43
LeCroy( ) LeCroy Japan, May 13, 2005 Page 87 CIS Acquisition Time (10 Gb/s signal) Time (seconds) 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 0 20 40 60 80 100 120 Acquisition ( samples x 1000) sampling scope WaveExpert NRO T = Lp/Br x Nsamples CIS 10MS/s T = Nsamples/Sr LeCroy Japan, May 13, 2005 Page 88 Page 44
TIE Rj/Dj LeCroy Japan, May 13, 2005 Page 89 Bathtub Tj Jitter Histogram Rj + Pj Tj ISI Synchronous N-cycle Basic Measurement Tj, Rj, Pj(δ δ) DDj LeCroy Japan, May 13, 2005 Page 90 Page 45
LeCroy Japan, May 13, 2005 Page 91 TIE VCO ~10 MHz strobe pulse Sampler M/N Φ Trigger signal applied to Precsale input Data Signal CIS ( ) TIE LeCroy Japan, May 13, 2005 Page 92 Page 46
S(n) = f(t + nt) s(n) LeCroy Japan, May 13, 2005 Page 93 Noise on the Trace CIS LeCroy Japan, May 13, 2005 Page 94 Page 47
T1 T2 T3 LeCroy Japan, May 13, 2005 Page 95 LeCroy Japan, May 13, 2005 Page 96 Page 48
t 3 t 1 t 2 LeCroy Japan, May 13, 2005 Page 97 Pj ISI () Synchronous N-cycle DDj LeCroy Japan, May 13, 2005 Page 98 Page 49
Pj(δ δ) Rj Pj dual-dirac ( ) dual-dirac Pj Pj(δ δ) Pj(p-p) LeCroy Japan, May 13, 2005 Page 99 Tj ( ) Tj SDA LeCroy Japan, May 13, 2005 Page 100 Page 50
101.5e9 Tj LeCroy Japan, May 13, 2005 Page 101 1010e-4 10 10e-6 CIS LeCroy Japan, May 13, 2005 Page 102 Page 51
LeCroy Japan, May 13, 2005 Page 103 - WaveExpert synchronous N-cycle plot (SDA ) Dj Pj (SDA ) dual-dirac Rj Dj PLL SDA LeCroy Japan, May 13, 2005 Page 104 Page 52