TESEQ NSG 4031 Broadband Immunity Test System

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  • Designed for IEC / EN 61000-4-31
  • Integrated white noise generator 150 kHz to 80 MHz
  • 3 power meter inputs 9 kHz to 1 GHzIntegrated class A power amplifier with >80 W, 150 kHz to 80 MHz
  • 5,7“ TFT color display
  • Internal, menu-based control software

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TESEQ NSG 4031 Broadband Immunity Test System



The broadband immunity test system NSG 4031 has been designed for testing in accordance with IEC / EN 61000-4-31. It contains a white noise generator with four different band filters to allow band limited testing as may be required in future product standards. The internal power meter are capable to show the forward power as well as the VSWR of the connected setup. The three front panel inputs allow an easy test level setting procedure. The internal power amplifier with more than 80 Watts output power allows test levels 1 to 3 as given in table 1 of IEC / EN 61000-4-31 also including an optional 2 dB attenuator which can be used in case of severe EUT mismatch. Due to the powerful and easy to use firmware, the NSG 4031 is independent from an external PC and control software.





Technical specifications of the white noise generator



Frequency bands:150 kHz to 80 MHz, 150 kHz to 30 MHz, 1 MHz to 30 MHz, 1 MHz to 80 MHz
RF Level
Level range:min -60 dBm/Hz to -40 dBm/Hz
Broadband signal flatness:< ±3 dB (150 kHz to 80 MHz)
Out of band attenuation:> 20 dB (100 MHz)
Pulse modulation
Rise / fall time (10% / 90%):< 1 µs
Modulation frequency range:1 Hz to 10 Hz
Frequency resolution:1 Hz
Duty cycle:10% to 90%





Technical specifications of the power meter



Frequency range:9 kHz to 1 GHz
Linear measurement range
channel 1:-35 dBm to +27 dBm
channel 2,3:-45 dBm to +20 dBm
Max. input / no damage
channel 1-3:+28 dBm
Noise level:>5 dB below the measurement range
Input return loss:>20 dB (below 500 MHz), >17 dB (500 MHz to 1 GHz)
Connector:BNC socket, 50 Ω
Accuracy 10 to 30°C:<0.5 dB, typ. <0.3 dB





Technical specifications of the power amplifier



Frequency range:150 kHz to 80 MHz
Input impedance:50 Ω
Output impedance:50 Ω
Input return loss:min. 10 dB
Output return loss:nominal min. 9.5 dB, 0 dB without damage
Gain:min. 50 dB
Gain flatness:max. + / - 3 dB
Saturated output power:min. 49 dBm
Linear output power:min. 48 dBm
Max. input power without damage:max. +10 dBm
Harmonic distortion at linear output power:typ. < -20 dBc





Analog ports



Front panel
Generator output:N socket 50 Ω,
Power amplifier input:N socket 50 Ω, max. +10 dBm
Power amplifier output:N socket 50 Ω
Power meter channel 1 to 3:as defined in chapter “Power meter“
Back panel
Monitoring input analog:BNC socket, 0 to 24 V Ri=15 kΩ, 6 mV resolution
External modulation input:BNC socket, impedance >10 kΩ




Digital ports



Front panel
USB:USB host connector for USB stick, keyboard, mouse
Back panel
User port:D-Sub 15 pole with 4 TTL inputs, 4 TTL outputs, +12 V / 800 mA, -12 V / 200 mA and +5 V / 800 mA power supply
Monitoring digital input:BNC socket, 0 to 24 V via optical coupler Ri=1.5 kΩ, switching threshold approx. 2 to 3 V
Monitoring optical input:LWL (Light wave connector), HP versatile link HFBR0501 series 40 kBd, (avoid scattered light on the back panel)
Trigger input:BNC socket, TTL for external triggering, max. frequency 100 Hz, trigger delay <10 ms
RS232:D-Sub 9 pole, up to 115200 Bd
RS232 optical:Connector 2 x HFBRx523 socket for 1 mm fiber optic cable with
2x USB:USB host connector for USB stick, keyboard, mouse
USB device connector:For remote control
Network:RJ45, Ethernet 10 / 100 BASE-T





General specifications 



Mains input:100 to 240 VAC, 50 / 60 Hz, autoranging
Power consumption:approx. 415 W
Operating temperature range:0°C to 40°C
Storage temperature range:-20°C to 60°C
Relative humidity:95% / 30°C (no moisture condensation)
EMC:DIN / EN 61326-1:2006
Shock:DIN / EN 60068-2-27
Vibration:DIN / EN 60068-2-6
Protection class:DIN / EN 61010-1 / IEC 61010-1
Size (W x H x D) :45 cm (19“) x 15 cm (3HU) x 42.3 cm (with handle bar and foot)
Weight:approx. 15 kg
Size of cardboard box:80 cm x 61 cm x 34 cm
Weight of cardboard box:approx. 8 kg (empty)