SHF Communication Technologies AG
Wilhelm-von-Siemens-Str. 23D • 12277 Berlin • Germany
Phone +49 30 772051-0 • Fax +49 30 7531078
E-Mail: sales@shf-communication.com • Web: www.shf-communication.com

Datasheet
SHF C992 A
65 GHz Clock Distribution

SHF reserves the right to change specifications and design without notice – SHF C992 A - V001 February 09, 2022 Page 1/11

Description
The SHF C992 A is a versatile broad band clock distribution providing six copies of the incoming clock.
A single clock signal can be used to synchronize various further modules at the same frequency.

Features

Broadband operation from 2 to 65 GHz
Multiple clock outputs at the input frequency
Controlled by intuitive graphical user interface via USB (either with the SHF BER Control Center(BCC) or the SHF Control Center (SCC))BCC Control Center – SHF C992 AApplications
Test setups are always an interaction of different parts; sophisticated setups may include many different
instruments and modules. To operate concurrently a common clock signal is often indispensable.
For example, in a typical application the clock input is fed with a signal from a signal generator like theSHF 78124 A while the clock outputs can be used to drive remote heads like SHF’s DACs, Multiplexers,
Demultiplexers or PAM-Multiplexers.

SHF reserves the right to change specifications and design without notice – SHF C992 A - V001 February 09, 2022 Page 2/11

Block Diagram

SHF reserves the right to change specifications and design without notice – SHF C992 A - V001 February 09, 2022 Page 3/11

Accessories+12 V Power Supply Desktop Adapter
Functional Earth Cable
Mini-USB cable

Absolute Maximum Ratings
Parameter

UnitSymbol

Input Amplitude

mVVClk inExternal DC Voltage on
RF Input PortVVDC inExternal DC Voltage on
RF Output PortsV

DC Supply Voltage

VMin.

Typ.

Max.

Comment1000

Peak-to-Peak-6+6AC coupled port

VDC out-6+6AC coupled ports

Vcc

0+14Input Parameters

SHF reserves the right to change specifications and design without notice – SHF C992 A - V001 February 09, 2022 Page 4/11

Specifications – SHF C992 A
Parameter

Unit

SymbolMin.

Minimum Input Frequency

GHz

fin minMaximum Input Frequency

GHz

fin max

65mVppVin200

Clock OutGHz

fout

Clock LV OutGHz

fout

Typ.

Max.

Comment

Input Frequency
2Input Amplitude
Input Amplitude900

AC coupled
Single ended

265

fin

265

fin

600

Output Frequency

Output Amplitude

Clock OutClock LV OutmVpp

mVpp

Vout

Vout

600

200

900700AC coupled
Single ended
Independent of the
Input Amplitude
AC coupled
Single ended
Independent of the
Input Amplitude

SHF reserves the right to change specifications and design without notice – SHF C992 A - V001 February 09, 2022 Page 5/11

Specifications – SHF C992 A
Parameter

Unit

Symbol

Min.

Typ.

Max.

Supply Voltage

V

Vcc

+11.5

+12.0

+12.5Supply Current

AIcc

Comment

Power Requirement

1.24
1.50

Without heat sink
With heat sink
Without heat sink
With heat sink
@ VCC = +12 VWPd

14.9
18.0

Output Voltage Fan

VVFan+12V+12

Output Current Fan

AIFan+12V

0.26

Output Frequency Fan

HzfFan+12V

30

Input Tacho Fan

VVFan Tacho

3.3

Power Dissipation
Integrated Fan Control

1Mechanical Characteristics
Clock In

Ω50

1.85 mm (V) female

Clock OutΩ50

1.85 mm (V) female

Clock LV OutΩ50

1.85 mm (V) female

DimensionsmmWeightgSee Outline Drawing
pages 10 / 11200490

Without heat sink
With heat sinkConditions
Operating Temperature

1°CTambient

1535

Use only with the supplied heat sink and fan!

SHF reserves the right to change specifications and design without notice – SHF C992 A - V001 February 09, 2022 Page 6/11

Typical Output Amplitudes @ 2.0 GHz ≤ Clk In ≤ 65.0 GHz
The measurements below have been performed using an Anritsu signal generator (68197C) and aTektronix Digital Serial Analyzer (DSA8300) with a Phase Reference Module (82A04B-60G) and a70 GHz Sampling Module (80E11). The outputs of the Clock distribution module had been connected
directly to the DSA input. Input power of the clock signal is 0 dBm (630 mVpp).

Clock Outputs
Clock Outputs @ fin
1000
900800
VPP [mV]

700600

Clk Out 1500

Clk Out 2400

Clk Out 3300

Clk Out 4200
1000010203040
fin [GHz]

506070

Clock LV Outputs
Clock LV Outputs @ fin
1000900800
VPP [mV]

700600500

Clk LV Out 1400

Clk LV Out 2300
20010000

10203040fin [GHz]506070Anritsu is a registered trademark of Anritsu Corporation, Tektronix is a registered trademark of Tektronix Inc.

SHF reserves the right to change specifications and design without notice – SHF C992 A - V001 February 09, 2022 Page 7/11

Typical Output Waveforms @ 2.0 GHz ≤ Clk In ≤ 65.0 GHz
The measurements below have been performed using an Anritsu  signal generator (68197C) and aTektronix Digital Serial Analyzer (DSA8300) with a Phase Reference Module (82A04B-60G) and a
70 GHz Sampling Module (80E11). The outputs of the Clock distribution module had been connected
directly to the DSA input. Input power of the clock signal is 0 dBm (630 mV pp).

Clock Outputs @ 4.0 GHz, 28.0 GHz & 32.0 GHz Clock Input

Clock Outputs

Clock LV Outputs

4.0 GHz output signal @ Clk Out

4.0 GHz output signal @ Clk LV Out

28.0 GHz output signal @ Clk Out

28.0 GHz output signal @ Clk LV Out

32.0 GHz output signal @ Clk Out

32.0 GHz output signal @ Clk LV Out

Anritsu is a registered trademark of Anritsu Corporation, Tektronix is a registered trademark of Tektronix Inc.

SHF reserves the right to change specifications and design without notice – SHF C992 A - V001 February 09, 2022 Page 8/11

Clock Outputs @ 56.0 GHz, 60.0 GHz & 64.0 GHz Clock Input
Clock Outputs

Clock LV Outputs

56.0 GHz output signal @ Clk Out

56.0 GHz output signal @ Clk LV Out

60.0 GHz output signal @ Clk Out

60.0 GHz output signal @ Clk LV Out

64.0 GHz output signal @ Clk Out

64.0 GHz output signal @ Clk LV Out

SHF reserves the right to change specifications and design without notice – SHF C992 A - V001 February 09, 2022 Page 9/11

Mechanical Drawing – Module onlycbdef
7.7
11.4aØ2.2
6.4

6.4
43.9
4952.3

23.5
13.6

66.4
30

13.64x1

Clk In7

Clk Out 4

Clk Out 1

26Clk Out 3

Clk Out 2

35Clk LV Out 2

Clk LV Out 1

465

747165

72.
Ø

12.4

6.4

5050

SHF C992 A

g353565 GHz Clock Distribution

XXXXX

SHF Communication
Technologies AG

3USB+12 V DC +12 V

GND

365760Pos

PortConnector

PortConnector

1

Clock In1.85mm (V) femaleaFunctional earth (FE)2

Clock Out 1

1.85mm (V) femalebMini-USB

3

Clock Out 2

1.85mm (V) female

cPower4

Clock LV Out 1

1.85mm (V) female

dFan+12V5

Clock LV Out 2

1.85mm (V) female

eFan Tacho

6

Clock Out 3

1.85mm (V) female

fGND

7

Clock Out 4

1.85mm (V) female

gService

all dimensions in mm

SHF reserves the right to change specifications and design without notice – SHF C992 A - V001 February 09, 2022 Page 10/11

Mechanical Drawing – Module with heatsink
cbdef

42.7
46.4

Ø2.2

a6.1

6.1
44.2
49.3
52.6

66.6
58.5
48.6
35

30.3
48.6

1

12.4

6.1

Clk In7

Clk Out 4Clk Out 126Clk Out 3

Clk Out 235Clk LV Out 2

Clk LV Out 1

4

SHF C992 Ag65 GHz Clock Distribution

101101

XXXXX

USB+12 V DC +12 V

86
GND7171

86

SHF Communication
Technologies AG

60.5

Pos

PortConnector

PortConnector

1

Clock In1.85mm (V) femaleaFunctional earth (FE)2

Clock Out 1

1.85mm (V) femalebMini-USB

3

Clock Out 2

1.85mm (V) female

cPower

4

Clock LV Out 1

1.85mm (V) female

dFan+12V5

Clock LV Out 2

1.85mm (V) female

eFan Tacho

6

Clock Out 3

1.85mm (V) femalefGND

7Clock Out 4

1.85mm (V) femalegService

all dimensions in mm
SHF reserves the right to change specifications and design without notice – SHF C992 A - V001 February 09, 2022 Page 11/11