Burst transmitter SFT 1400 125kHz Schlöder

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Model: SFT 1400
Manufacturer: Schlöder
Status: Stocking
Guarantee: 12 months
Price: Contact

The Burst SFT 1400 125kHz Schlöder transmitter simulates transient transient disturbances as defined in the IEC/EN 61000-4-4 standards. Due to the very short rise time (5ns), the individual pulses produce a wideband RF spectrum up to approximately 300 MHz. RF interference results are results.

  • Boom frequency up to 125 kHz
  • All parameters can be changed during testing
  • DIN EN 61000-4-4, April 2013
  • Single pulse to explode forever
  • 5000 pulses/second. – 500 / pack
  • Correct activation
  • Various special functions.


I. Specification of Burst transmitter SFT 1400 125kHz

Burst transmitter SFT 1400 125kHz Schlöder

  • Function: All burst parameters can be changed during cluster testing. This ensures that the noise threshold of the test equipment can be determined easily and continuously. It is not necessary to interrupt the test to change the parameter on the cluster generator.
  • Explosion pulses in practice: Actual pulses occurring Explosive pulses in practice do not conform to the definition of the standard. Its physical properties differ from standard definitions. The SFT 1400 125kHz Burst Transmitter provides the user with a series of special functions such as “Real Burst”, which simulates the natural occurrence of an explosive pulse, or “Noise”, which can simulate contact bounce. The “IFM” and “DFM” functions (increase or decrease the frequency in an explosive package) are important tools for checking resonance or saturation effects in the equipment under test.
  • Precise triggering: To isolate the error, it is possible to precisely couple the burst pulse at a certain processing time of the test subject. Explosive pulse triggered with network precision with fluctuations <25ns.

II. Burst definition


Stop. Norm Definition Variable setting on the SFT 1400
Burst duration a 15 ms ± 20% at 5 kHz

0.75 ms ± 20% at 100 kHz

(Corresponds to 75 pulses each)

0,01 – 100 ms *1

Burst Period

b 300 ms ± 20 % 10 – 1000 ms *1
Burst frequency c 5 kHz or 100 kHz to 4 kV

100 Hz – 125 kHz  bis 5 kV

Pulse Amplitude

U 0,5 / 1 / 2 / 4 kV 100 V – 5000 V (in 10 V steps)
Rise time tr 5 ns ± 30 %

* 1: the SFT 1400 automatically takes the limit parameters into account.


Pulse duration (50 Ohm)

Pulse duration (1 kOhm)


50 ns ± 30 %

50 ns, -15ns/+100 ns

Impedance Z

50 Ω ± 2 %


SFT 1400 125kHz Schlöder Burst transmitter SFT 1400 125kHz Schlöder

[1] Grounding socket.

[2] Laboratory socket for specimen connection.

[3] Schuko socket for connecting test object.

[4]Polarity of explosive pack.

[5] Manual or external activation. Time enabled with jitter <± 25 ns.

[6] Select key for stage.

[7] Selection button for test time.

[8] Digital potentiometer.

[9] Selection key for special functions.

[10] Socket for interface cable.

[11] Selection key for PC remote control.

[12] Selection key for memory function.

[13] Selection key for packet duration.

[14] Selection key for burst frequency.

[15] Indicator for “increasing activity”.

[16] Display for memory function.

[17] Display for pulse voltage.

[18] Selection key for coupling path.

[19] Display phase.

[20] Monitor (TTL output).

[21] High voltage output (connection for coupling or 3-phase network).

***View more Gmga explosive generators at: https://gmga.vn/en/danh-muc/maintenance-equipment/surge-generators-and-emc-measuring-systems/

III. Specifications of Burst transmitter SFT 1400 125kHz Schlöder

Technical specifications

Burst frequency

Single peak up to 125 kHz
Pulse voltage

100 V – 5000 V

Polarity burst package

pos., neg., alternating
Pulse shape

according to IEC 61000-4-4

Max. Pulses / sec

5000 (up to 2kV), 3000 (up to 3kV) and 1500 (up to 5kV)
Max. Pulses / package



RS 232

Coupling network

Integrated in the generator, coupling of the test pulses to the supply lines of the device under test.

Nominal voltage AC

Max. 230V / 16A, 50 Hz

Nominal voltage DC

Max. 110V / 8A
Phase display

LED red / green

Coupling capacity

33 nF
Coupling switch

L, N, PE -> E; L, N-> E; Etc.

DUT connection:

Schuko socket

additional laboratory sockets

High voltage output



Operating temperatur

0 – 40 ° C

19 ″ housing, 3 U


9 kg
Supply voltage

100-240V / 47-63Hz


3-phase Coupling network 4 x 16 A.

CWG 520
3-phase Coupling network 4 x 32 A.

CWG 523

3-phase Coupling network 4 x 60 A.

CWG 524
Divider 100: 1/50 ohm: SFT 450

SFT 450

Probe set, magnetic field

SFT 470
Control software for burst etc.


Capacitive coupling pliers

SFT 415
HV cable for coupling pliers 1m

SFT 430

Calibration set coupling pliers

SFT 415-CS
50 + 1000 Ω attenuators

SFT 450 set necessary to verify the

Burst on the generator or



***Burst transmitter videos are available at: Gmga Measuring Youtube.


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