Clock Recovery Single Mode,
Multimode and Electrical Modules 83491A 83492A 83493A 83494A
Channel Type Electrical Multimode Optical Single Mode Optical Single Mode Optical
Clock Recovery Phase Locked Loop Bandwidth
Internal Path Triggering 50 to 70 kHz 90 kHz
External Output 4 MHz ±10%
Data Rates (Mb/s) 155, 622, 1063, 1250, 155, 622, 1063, 1250, 155, 622, 1250, 155, 622, 2488, 9953
2125, 2488, 2500 2125, 2488, 2500 2488, 2500
Tracking/Acquisition Range ±0.1% 155, 622, 2488, ±0.1%;
9953 ±0.03%
Internal Splitter Ratio 50/50 50/50 10/90 10/90
Output Jitter <0.0125 UI RMS 155, 622, 2488 0.02 UI RMS
9953 0.03 UI RMS
Input Power for Clock Recovery –10 dBm to +3 dBm 750 to 860 nm, –20 dBm to +3 dBm –12 dBm to +3 dBm
–10 to +3 dBm (155, 622, 2488 Mb/s)
1000 to 1600 nm, –8 dBm to +3 dBm
–13 to +3 dBm (9953 Mb/s)
Input/Output Connectors APC 3.5 mm, 50 ohm FC/PC, 62.5/125 µm FC/PC, 9 /125 µm
multimode, user
selectable connector
Auxiliary Recovered Clock and
Regenerated Data Outputs Type N with SMA adapters
Input Return Loss DC–1250 MHz, 20 dB 20 dB 28 dB 28 dB
1250–2500 MHz, 15 dB
Input Insertion Loss DC–1250 MHz, 7 dB 5 dB Maximum 1.5 dB Maximum
1250–2500 MHz, 15 dB
Clock Recovery Single Mode,
Multimode and Electrical Modules 83495A-100 83495A-101
Channel Type Single Mode Optical & Electrical Multimode Optical & Electrical
Clock Recovery Phase Locked Loop Bandwidth
Internal Path Triggering ≤100 KHz or ≤4 MHz (3.5 MHz typical
1
) user selectable
2
External Output ≤100 KHz or ≤4 MHz (3.5 MHz typical
1
) user selectable
2
Data Rates (Gb/s) 9.953 to 11.32
Tracking/Acquisition Range Continuous within data rate range
Internal Splitter Ratio 20/80 30/70
Clock Output Jitter 0.01 UI (0.007 UI typical) RMS
3
Input Level for Clock Recovery
4
–11 dBm to +1 dBm optical –8 dBm to +1 dBm optical
5
0.10 to 2.0 Vp-p electrical 0.10 to 2.0 Vp-p electrical
Input/Output Connectors FC/PC, 9/125 um & Type N FC/PC, 62.5/125 um & Type N
Auxiliary Recovered Clock and
Regenerated Data Outputs Type N with SMA adapters (no data output)
Input Return Loss 32 dB maximum optical 28 dB maximum optical
DC–2.5 GHz, 20 dB electrical DC–2.5 GHz, 20 dB electrical
2.5 GHz–11.32 GHz, 15 dB electrical 2.5 GHz–11.32 GHz, 15 dB electrical
Input Insertion Loss 2.5 dB maximum optical 3.0 dB maximum optical
18
Clock Recovery
TDR System Oscilloscope/TDR Performance Normalized Characteristics
Rise Time 40 ps nominal Adjustable from larger of 10 ps or 0.08 x time/div
Maximum: 5 x time/div
TDR Step Flatness ≤ ±1% after 1 ns from edge ≤0.1%
≤ ±5%, –3% 1 ns from edge
Low Level 0.00 V ±2 mV 0.00 V ±2 mV
High Level ±200 mV ± 2 mV ±200 mV ± 2 mV
TDR System
1
Achieved with input power ≥–8 dBm for option 100; ≥–5 dBm for option 101.
2
Loop BW transfer function is guaranteed to be less than a low pass
response with the specified corner frequency rolling off –20 dB/dec.
3
Measured with a PRBS 2
23
-1 pattern. For total scope jitter, RSS
clock output jitter with mainframe jitter.
4
For optical input power, source extinction ratio ≥8.2 dB when measured per
TIA/EIA OFSTP-4A. For extinction ratio equal to 8.2 dB, OMA is defined as
(P
1
–P
0
) and is equal to average input power (dBm) + 1.68 dB.
5
Input is a fully filled multimode signal.
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