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N8975B

Keysight Technologies (Agilent HP)Noise Figure

The Keysight N8975B is a high-performance Noise Figure Analyzer (NFA) designed to make fast, accurate, and repeatable noise figure and gain measurements up to 26.5 GHz. Part of Keysight's advanced test equipment portfolio, it features an intuitive multi-touch interface and supports a wide range of noise sources, including the smart noise source (SNS) series, making it ideal for characterization of amplifiers, frequency converters, and entire receiver systems.

MicrowaveNoise FigureRF and Microwave

Specifications

General

ParameterValue
InterfacesGPIB (IEEE-488), LAN (1000Base-T), USB 2.0, USB 3.0, DisplayPort, VGA
Display10.6-inch (270 mm) multi-touch capacitive LCD, 1280 × 768 resolution
Warm-up Time45 minutes

Physical

ParameterValue
Operating Temperature0 to 55 °C
Dimensions (W×H×D)426 mm × 177 mm × 366 mm
Weight15.5 kg

Frequency Specifications

ParameterValue
Frequency Range10 MHz to 26.5 GHz
Frequency Resolution1 Hz
Sweep Points Range1 to 4001

Noise Figure and Gain Performance

ParameterValue
Noise Figure Instrument Uncertainty±0.02 dB
Noise Figure Resolution0.01 dB
Gain Measurement Range-20 to +40 dB
Gain Instrument Uncertainty±0.15 dB
Gain Resolution0.01 dB
Noise Temperature Range0 to 999,990 K
Y-Factor Range0 to 99 dB

RF Input and Port Characteristics

ParameterValue
RF Input Impedance50 Ω (nominal)
RF Input Connector Type3.5 mm
Maximum RF Input Power+15 dBm

Noise Source Drive and Calibration

ParameterValue
Noise Source Drive Voltage28.0 V ± 0.1 V
Noise Source Drive PortBNC (female)
Smart Noise Source (SNS) SupportYes, via front-panel 11-pin multi-pin connector
Compatible Noise SourcesKeysight 346 Series, Keysight N4000A/1A/2A SNS Series
Loss Compensation TablesYes (Before and After DUT)

Measurement Configuration and Processing

ParameterValue
IF Bandwidth Settings4 MHz, 2 MHz, 1 MHz, 400 kHz, 200 kHz, 100 kHz
Sideband SelectionLSB, USB, DSB

System Connectivity and Control

ParameterValue
External LO SupportYes, compatible with Keysight MXG, EXG, and PSG signal generators
External Reference Input10 MHz (BNC female)
External Reference Output10 MHz (BNC female)
Trigger PortsTrigger In (BNC female), Trigger Out (BNC female)
SCPI CompatibilityYes
HP 8970B Emulation ModeYes

Display and User Interface

ParameterValue
Simultaneous Measurement Traces4

Power and Physical Characteristics

ParameterValue
Rackmount Height Units4U

Environmental and Compliance

ParameterValue
Storage Temperature Range-40 to +70 °C
Operating Humidity LimitsUp to 95% RH
Recommended Calibration Cycle1 Year

Inputs & Outputs

ParameterValue
Smart Noise Source (SNS) ConnectorFront panel 11-pin connector
Noise Source Drive ConnectorBNC female
External Reference Input ConnectorBNC female, 50 ohm (nominal)
External Reference Output ConnectorBNC female, 50 ohm (nominal)
Trigger Input ConnectorBNC female
Trigger Output ConnectorBNC female

Power & Safety

ParameterValue
Power Consumption350 W maximum

Compliance

ParameterValue
EMC ComplianceComplies with European EMC Directive 2014/30/EU, IEC/EN 61326-1, CISPR 11 Class A
Safety ComplianceComplies with European Low Voltage Directive 2014/35/EU, IEC/EN 61010-1

Power Requirements

ParameterValue
AC Input Voltage100 to 120 V AC / 220 to 240 V AC
AC Input Frequency50/60 Hz (all voltages), 400 Hz (100 to 120 V AC)

Interfaces

ParameterValue
Rear Panel USB Ports4 x USB 2.0 Type-A
LAN Interface Speed10/100/1000 Mbps (1000Base-T)
Video Output Ports1 x DisplayPort, 1 x DVI-I

System Configuration

ParameterValue
Storage Drive TypeRemovable Solid-State Drive (SSD)

Environmental

ParameterValue
Operating AltitudeUp to 3,000 meters (9,843 feet)
Storage AltitudeUp to 4,572 meters (15,000 feet)

User Interface

ParameterValue
Display Screen Size10.6-inch (269 mm) diagonal
Display Screen TypeCapacitive multi-touch color LCD

Technology

Noise Figure Analyzer

Applications

Noise figure and gain characterization of RF/microwave components and systems