SHF Communication Technologies AG
Wilhelm-von-Siemens-Str. 23D • 12277 Berlin • Germany
Phone ++49 30 / 772 05 10 • Fax ++49 30 / 753 10 78
E-Mail: sales@shf.de • Web: http://www.shf.deDatasheet
SHF 11120C40 - 43 Gbps Clock Recovery Module

SHF reserves the right to change specifications and design without notice – SHF 11120 C - V003 – 14.04.2009

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Description
The SHF 11120C Clock Recovery is designed to extract and synchronize the clock from a serial data
stream. The module operates at bit rates from 39.8 to 43.1 Gbps.
It uses two separate VCOs which allow operation in two bands. The lower band spans the range between
39.8 and 41.6 Gbps and the higher band spans the range between 41.6 and 43.1 Gbps.
Due to the circuit concept a reference clock with a frequency of bit rate divided by either 64, 32 or 16 must
be applied to the unit. For better convenience reference oscillators for three standard bit rates (39.813
Gbps, 42.656 Gbps and 43.018 Gbps) are built-in.
The SHF 11120C can be operated locally by the front panel or remote via Ethernet-connection from a PC
running the SHF BERT Control Center control software (BCC). Its programming features allow automatedmeasurements using test programs like Agilent VEE or National Instruments LabView.
The module is a compact solution which offers superb performance while including easy to use features.

Features•

Operating bit rate range from 39.8 to 43.1 Gbps (this includes OC-768 with and without FEC)•

Clock output frequency at half and quarter of the nominal input data bit rate•

Excellent input sensitivity of 50 mV•

Local or remote operation via Ethernet-connection to a PC (SHF BERT Control Center)

Options•Option C40: Full clock output

Applications•

R&D for optical communication systems at bit rates from 40 to 43 Gbps

•Characterization of high speed optical components•

Bit error rate testing•

Optical component and fiber loop testing•

Optical transmitter testing

SHF reserves the right to change specifications and design without notice – SHF 11120 C - V003 – 14.04.2009

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Block Diagram

Data
Input
Ref.
Input

(full Bitrate)

Clock Recovery
Module(Bitrate /2)

ClockOutput(Bitrate /4)622.08MHz
666.51MHz
672.16MHz

Controller

Power
SupplyLCDisplay

Keyboard

Ethernet

Specifications – SHF 11120C
Parameter

Unit

Min.

Typ.

Max.

Comment

Data Input
Operating bit rate
VCO1
VCO2
Locking Range

1Gbps
39.8
41.6
MHz41.6
43.1±4

Input Voltage

mVpp50800ConnectorΩ50

Return lossdB8V-female

Reference Clock Input
Input Frequency(Bit Rate / 64 mode)(Bit Rate / 32 mode)(Bit Rate / 16 mode)

GHzInput Voltage

mVpp

ConnectorΩ50

SMA-female

Clock 1MHz622.080

39.81312 Gbps

Clock 2

MHz666.514

42.65692 Gbps

Clock 3

MHz672.163

43.01841 Gbps

0.622
1.244
2.488

0.674
1.348
2.696400800

Internal Reference Clock1

PRBS 2^31-1, Input Amplitude 100mVSHF reserves the right to change specifications and design without notice – SHF 11120 C - V003 – 14.04.2009

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Clock /4 Output (quarter bit rate)
Output Frequency

GHz

9.95

10.775

Output Voltage

mVpp

400

800

ConnectorΩ50

RMS-Jitter

fs

550

SMA-female700

on scope display, measured
with Agilent 86100A with
precision time baseHalf Clock Output (half bit rate)
Output Frequency

GHz

19.9

21.55

Output Voltage

mVpp

500

1000

ConnectorΩ50

RMS-Jitter

fs450

K-female600

on scope display, measured
with Agilent 86100A with
precision time base

Full Clock Output (optional, full bit rate)
Output Frequency

GHz39.8

43.1

Output Voltage

mVpp

500

1000ConnectorΩ50

RMS-Jitter

fs450

V-female600

on scope display, measured
with Agilent 86100A withprecision time base240

47… 63Hz

General Data
Power Supply

V

90

Power Consumption

W

15

Weightkg

3Dimensions (WxHxD)

mmOperating temperature

°C

1035

Storage temperature

°C

-20

70

Network Connection

Mbps

235 x 110 x 290

10 / 100

Ethernet, RJ-45
connector

SHF reserves the right to change specifications and design without notice – SHF 11120 C - V003 – 14.04.2009

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Test Results
Test Results @39.813 Gbps with Internal Reference 1 (622.08 MHz)

Data In @ 39.813 Gbps

Clk/4 Out @ 39.813 Gbps

Clk/2 Out @ 39.813 Gbps

Clk Out @ 39.813 Gbps

SHF reserves the right to change specifications and design without notice – SHF 11120 C - V003 – 14.04.2009

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Test Results @42.656 Gbps with Internal Reference 2 (655.514 MHz)

Data In @ 42.656 Gbps

Clk/4 Out @ 42.656 Gbps

Clk/2 Out @ 42.656 Gbps

Clk Out @ 42.656 Gbps

SHF reserves the right to change specifications and design without notice – SHF 11120 C - V003 – 14.04.2009

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Test Results @43.018 Gbps with Internal Reference 1 (672.163 MHz)

Data In @ 43.018 Gbps

Clk/4 Out @ 43.018 Gbps

Clk/2 Out @ 43.018 Gbps

Clk Out @ 43.018 Gbps

SHF reserves the right to change specifications and design without notice – SHF 11120 C - V003 – 14.04.2009

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