N1923A

Keysight Technologies (Agilent HP)Power Sensors

The Keysight N1923A is a P-Series wideband power sensor operating from 50 MHz to 18 GHz. Featuring an integrated 3.0-meter (10 ft) cable, it is designed for use with Keysight N1911A and N1912A P-Series power meters to perform high-speed peak, average, and time-gated power measurements. The sensor supports internal zeroing and calibration to eliminate the need for an external reference source.

Microwave Power Measurement RF and Microwave

Specifications

General

Parameter	Value
Interfaces	Integrated P-Series sensor cable (3.0 m)

Physical

Parameter	Value
Power Supply	Powered directly from the host P-Series power meter
Operating Temperature	0 to 55 °C
Dimensions (W×H×D)	40 mm × 27 mm × 135 mm
Weight	0.226
Cable Configuration	Fixed/integrated cable

Measurement Ranges & Power Specifications

Parameter	Value
Frequency Range	50 MHz to 18 GHz
Power Measurement Range (Average Mode)	-35 dBm to +20 dBm
Power Measurement Range (Normal Mode)	-35 dBm to +20 dBm
Maximum Continuous Input Power	+23 dBm (200 mW)
Maximum Peak Input Power	+30 dBm (1 W) for < 10 µs duration
Maximum DC Input Voltage	5 VDC

Sensor Technology & Architecture

Parameter	Value
Sensor Detection Type	Diode-based
Measurement Modes Supported	Normal (Peak, Average, Time-gated, Rise/Fall time, Pulse width) and Average-only
Video Bandwidth	≥ 30 MHz
Rise Time	≤ 13 ns (for power levels > -15 dBm)
Fall Time	≤ 13 ns (for power levels > -15 dBm)
Minimum Pulse Width	50 ns

RF Port Characteristics

Parameter	Value
Input Impedance	50 Ω nominal
RF Connector Type	Type-N
Connector Sex	Male
Maximum SWR (50 MHz to 2 GHz)	1.12
Maximum SWR (2 GHz to 10 GHz)	1.16
Maximum SWR (10 GHz to 16 GHz)	1.21
Maximum SWR (16 GHz to 18 GHz)	1.29

Triggering & Sampling

Parameter	Value
Maximum Sampling Rate	100 MSamples/s continuous sampling
Trigger Delay Range	-1.0 s to +1.0 s
Time Resolution	100 ps

Meter Compatibility & System Integration

Parameter	Value
Compatible Power Meters	Keysight N1911A (Single Channel) and N1912A (Dual Channel) P-Series Power Meters
Calibration Factor Storage Type	Internal EEPROM
Internal Calibration Support	Yes (Internal Zero and Calibration, no external reference needed)

Environmental Parameters

Parameter	Value
Storage Temperature Range	-40 °C to +70 °C
Operating Humidity Range	95% RH at 40 °C (non-condensing)
Storage Humidity Range	90% RH at 65 °C (non-condensing)
Maximum Operating Altitude	4,600 meters (15,000 feet)
Maximum Storage Altitude	15,000 meters (50,000 feet)

Physical Dimensions & Weight

Parameter	Value
Cable Length	3.0 meters (10 feet)

Accuracy & Calibration

Parameter	Value
Zero Set (Average Mode)	±0.17 µW
Zero Set (Normal Mode)	±1.4 µW
Zero Drift (Average Mode)	±0.035 µW
Zero Drift (Normal Mode)	±0.15 µW

Performance

Parameter	Value
Measurement Noise (Average Mode)	≤ 240 nW
Measurement Noise (Normal Mode)	≤ 1.6 µW
Video Bandwidth Settings	High (30 MHz), Medium (15 MHz), Low (5 MHz), Off (300 kHz)
System Rise Time	≤ 13 ns (with N1911A/N1912A)
System Fall Time	≤ 13 ns (with N1911A/N1912A)
Trigger Jitter	1 ns rms
Power Linearity (Normal Mode, -32 to -20 dBm)	±4.5% (Normal Mode, -35 to -20 dBm)
Power Linearity (Normal Mode, -20 to +20 dBm)	±4.0%
Power Linearity (Average Mode, -35 to -20 dBm)	±4.5%
Power Linearity (Average Mode, -20 to +20 dBm)	±4.0%

Triggering

Parameter	Value
Internal Trigger Level Range	-20 dBm to +20 dBm

Calibration

Parameter	Value
Internal Zero and Cal Support	Yes, without disconnecting RF input (internal RF switch)
Zeroing Time	11 s (typical)
Calibration Time	19 s (typical)

Inputs & Outputs

Parameter	Value
Connector to Power Meter	P-Series multi-pin sensor connector

EMC & Safety

Parameter	Value
EMC Compliance	IEC 61326-1 / EN 61326-1, CISPR 11 / EN 55011 Class A
Safety Compliance	IEC 61010-1 / EN 61010-1

Technology

Diode-based wideband power sensor

Applications

RF and microwave pulse profiling, peak and average power measurements