Data Sheet SHF 78124 A
SHF Communication Technologies AG

Data SheetSHF 78124 A

32 / 64 GHz Synthesized Clock Generator

SHF reserves the right to change specifications and design without notice
V004 - Jan. 22, 2024 - Page 1

Data Sheet SHF 78124 A
SHF Communication Technologies AGDescription
The SHF 78124 A is a compact synthesized continuous wave (CW) signal generator featuring a widefrequency range (tunable continuously without any gap), adjustable output power, low jitter, low harmonicand low non-harmonic signal components.
In ‘configuration 32’ it features a frequency range from 1 to 32.8 GHz with a 1 kHz resolution and an output
power range from -6 to 6 dBm (in standard configuration) or -8 to +8 dBm (with the high output power option(opt. HOP). The output power can be adjusted in 0.1 dB steps.
In ‘configuration 64’ it features a frequency range from 1 to 64 GHz with a 1 kHz resolution and an output
power range from -10 to +6 dBm. The output power can be adjusted in 0.1 dB steps.
An additional trigger output provides a trigger signal whose frequency can be 1/n of the output frequency(with n= 4, 8, 16, 32, 64 or 128).
The SHF 78124 A is perfectly suited as a clock source for our BERT and AWG Systems. To derive further clock
signals at various frequencies fitting clock distributions and clock doublers are available.

Block DiagramFeatures
••
•
•
•

Clock frequency ranges from fCLK = 1 to 32.8/64.0 GHz with 1 kHz resolution
Output power adjustable from -10 to +8 dBm with 0.1 dB resolution depending on selected configurationand option.
10 MHz reference input and output for phase locking to other instrumentsControlled by intuitive graphical user interface SHF Control Center (SCC)
Remote programming interface (Ethernet) for automated measurements

Configurations
The SHF 78124 A can be equipped in two different configurations:32:

Output frequency range from 1 to 32.8 GHz

64:

Output frequency range from 1 to 64.0 GHzOptions
HOP:

The High Output Power option extends the output amplitude range from -8 to +8 dBm. It is available
for the 32 GHz configuration only.
SHF reserves the right to change specifications and design without notice
V004 - Jan. 22, 2024 - Page 2Data Sheet SHF 78124 A
SHF Communication Technologies AG

Operation of the Synthesized Signal Generator
The SHF 78124 A is controlled over a standard Ethernet connection by an external computer (not part of thedelivery). Every system comes along with the intuitive, easy to use SHF Control Center software (SCC). It
provides the interface for changing the device parameters, see screenshot below.
Additionally, the instrument may be programmed remotely over the Ethernet connection for automatedtests and measurements. Please refer to the SHF BERT Programming Manual.

SHF Control Center GUI

SHF reserves the right to change specifications and design without notice
V004 - Jan. 22, 2024 - Page 3

Data Sheet SHF 78124 A
SHF Communication Technologies AGSpecifications
Clock Output (RF Out) Configuration 32 GHz 1
Parameter

UnitSymbol

Min

Operating Frequency

GHzfCLK

1Frequency Resolution

kHz1

Frequency Accuracy

ppb

–1000

+1000

with internal reference

Frequency Stability

ppb

–50

+50

Ambient
temperature 21°C

Frequency Stability Aging

ppb

–500

+500

per year-6-8

With Option HOP

Minimum Output PowerdBm

Pout,minMaximum Output PowerdBm

Pout,maxOutput Power ResolutiondB

0.1Output Power AccuracydB–1Harmonics/Spurious Signals

dBc

Phase Noise

Output ImpedanceConnector

dBc/HzΩTypMax

Comment32.8

68With Option HOP

1Ambient
temperature 21°C

–20
–80
–96
–94
–11950fCLK = 10 GHz
1 kHz offset
10 kHz offset
100 kHz offset
1 MHz offset
2.92 mm (K) female

1

The specifications in this datasheet are only valid if the internal reference is activated. If the external reference setting
is activated the signal at Ref In is fed through to Ref Out. In this case the parameters frequency, stability and amplitudedepend on the Ref In signal.

SHF reserves the right to change specifications and design without notice
V004 - Jan. 22, 2024 - Page 4

Data Sheet SHF 78124 A
SHF Communication Technologies AG

Clock Output (RF Out) Configuration 64 GHz 2
Parameter

Unit

SymbolMin

Operating Frequency

GHz

fCLK

1

Frequency Resolution

kHz1

Frequency Accuracy

ppb

–1000

+1000

with internal reference

Frequency Stability

ppb

–50

+50

Ambient
temperature 21°C

Frequency Stability Aging

ppb–500+500

per year

Minimum Output PowerdBm

Pout,minMaximum Output PowerdBm

Pout,max

Output Power ResolutiondB

0.1Output Power AccuracydB–1Harmonics/Spurious Signals

dBc

Phase Noise

Output ImpedanceConnector

dBc/HzΩTypMax

Comment64–1061

Ambient
temperature 21°C

–20
–80
–96
–94
–119
50fCLK = 10 GHz
1 kHz offset
10 kHz offset
100 kHz offset
1 MHz offset
1.85 mm (V) female

2The specifications in this datasheet are only valid if the internal reference is activated. If the external reference setting
is activated the signal at Ref In is fed through to Ref Out. In this case the parameters frequency, stability and amplitudedepend on the Ref In signal.

SHF reserves the right to change specifications and design without notice
V004 - Jan. 22, 2024 - Page 5

Data Sheet SHF 78124 A
SHF Communication Technologies AGTrigger OutputParameter

UnitSymbolMin

TypMaxFrequency

CommentfCLK / n n = 4, 8, 16, 32, 64 and 128
depending on fCLK as shown in
Available Trigger Output Divider Values

Output Amplitude

mVpp

Output Impedance

Ω400

800
50Connector

2.92 mm (K) female

Available Trigger Output Divider Values

Trigger Divider Value

32.8 GHz12816 GHz

648 GHz323.8 GHz

161.9 GHz8421248163264fclk [GHz]SHF reserves the right to change specifications and design without notice
V004 - Jan. 22, 2024 - Page 6

Data Sheet SHF 78124 A
SHF Communication Technologies AG

Ref InParameter

Unit

SymbolReference Frequency

MHz

fref

Amplitude

Vpp

Input Impedance

ΩMin

TypMaxComment

10
0.2

3.3
50

Connector

SMA female

Ref Out (using internal reference setting) 3
Parameter

Unit

SymbolMin

TypMaxComment

Reference Frequency

MHz

Amplitude

Vpp

Output ImpedanceΩFrequency Accuracy

ppb–1000+1000

Frequency Stability

ppb–50+50

Ambient
temperature 21°C

Frequency Stability Agingppb–500+500

per year

100.850Connector

SMA female

GeneralParameterUnit

Supply Voltage

VSupply CurrentmAPower Consumption

WWeightkg

Operating Temperature°CSymbol

MinTypMax

Conditions+22+24+264 pin DIN Power Jack

850
1060
25
30

2.6
2.2
1035

Configuration 32 G
Configuration 64 G
Configuration 32 G
Configuration 64 G
+24 V switching power supply isincluded
without power supply
Configuration 64
Configuration 32
Ambient temperature

3The specifications in this datasheet are only valid if the internal reference is activated. If the external reference setting
is activated the signal at Ref In is fed through to Ref Out. In this case the parameters frequency, stability and amplitudedepend on the Ref In signal.

SHF reserves the right to change specifications and design without notice
V004 - Jan. 22, 2024 - Page 7

Data Sheet SHF 78124 A
SHF Communication Technologies AG

Typical Output Waveforms
Configuration 32

2 GHz clock output at 0 dBm

16 GHz clock output at 0 dBm

28 GHz clock output at 0 dBm

32 GHz clock output at 0 dBm

SHF reserves the right to change specifications and design without notice
V004 - Jan. 22, 2024 - Page 8

Data Sheet SHF 78124 A
SHF Communication Technologies AG

Configuration 64

2 GHz clock output at 0 dBm

16 GHz clock output at 0 dBm

28 GHz clock output at 0 dBm

32 GHz clock output at 0 dBm

56 GHz clock output at 0 dBm

64 GHz clock output at 0 dBm

SHF reserves the right to change specifications and design without notice
V004 - Jan. 22, 2024 - Page 9

Data Sheet SHF 78124 A
SHF Communication Technologies AG

Mechanical Drawings
Configuration 32
SHF 78124 A

Synthesized Clock Generator

PowerModulation InTrig OutRF Out

1.2 Vpp Max<1 Vpp<10 dBm

Outputs

OnOffOnOff

58.8Error

50  /2.92mm Female

50  /2.92mm Female

221.5

9544.242362.3

35.2
82.3
112.3dbac
24 V / 3,75 A

Ethernet
50  /SMA FemaleUSB< 3.3 Vpp

3.3 Vpp Max

Ref Out

Ref In

6.2

1

15.11

221.4

515.12

7.6

82

all dimensions in mm

Pos.

Designation

Connector

Pos.

Designation

1

Modulation In

2.92 mm (K) Female

aGND

2Trigger Out

2.92 mm (K) FemalebUSB

3RF Out

2.92 mm (K) FemalecEthernet

4Reference InSMA Female

dPower Supply

5Reference Out

SMA Female

SHF reserves the right to change specifications and design without notice
V004 - Jan. 22, 2024 - Page 10

Data Sheet SHF 78124 A
SHF Communication Technologies AG

Configuration 64

SHF 78124 A

Synthesized Clock Generator

PowerModulation In

Trig Out

RF Out1.2 Vpp Max<1 Vpp<10 dBm

OutputsOnOffOn
Off

58.8Error

50  /1.85mm Female

50  /2.92mm Female

221.5

95
44.2

423

62.3

35.2
82.3
112.3

dbac
24 V / 3,75 A

Ethernet
50  /SMA FemaleUSB< 3.3 Vpp

3.3 Vpp Max

Ref Out

Ref In6.2

115.11221.4

515.127.682

all dimensions in mm

Pos.

Designation

Pos.

DesignationConnector

1Modulation In

2.92 mm (K) Female

aGND

2Trigger Out

2.92 mm (K) FemalebUSB

3RF Out

1.85 mm (V) Female

cEthernet

4

Reference In

SMA FemaledPower Supply

5

Reference Out

SMA Female

SHF reserves the right to change specifications and design without notice
V004 - Jan. 22, 2024 - Page 11

Data Sheet SHF 78124 A
SHF Communication Technologies AG

SHF Communication Technologies AG
Wilhelm-von-Siemens-Str. 23 D | 12277 Berlin | Germany+49 30 772 051 0
sales@shf-communication.com
www.shf-communication.com

SHF reserves the right to change specifications and design without notice
V004 - Jan. 22, 2024 - Page 12