Agilent/Keysight N9343C

The Agilent/Keysight N9343C is a handheld spectrum analyzer engineered for field RF signal analysis, interference detection, and system verification in demanding environments. It delivers benchtop-class performance in a portable form factor, combining fast sweep times with sensitivity and dynamic range for comprehensive signal characterization across 1 MHz to 13.6 GHz.

Technical Specifications

• 1 MHz to 13.6 GHz tunable operation (down to 9 kHz)


• Preamplifier: 1 MHz to 13.6 GHz RF Performance


• Displayed Average Noise Level (DANL): −144 dBm typical; −155 dBm/Hz performance


• DANL with preamplifier ON: −154 to −155 dBm typical


• Amplitude accuracy: ±1.3 dB


• Third Order Intercept (TOI) @ 12 GHz: +12 dBm typical


• RF Input VSWR: <1.5:1 (10 MHz to 3 GHz, ≥10 dB attenuation); <2:1 (7 to 13.6 GHz)


• Spurious response: second harmonic <−65 dBc typical, <−70 dBc (50 MHz to 7 GHz); mixer signal at −30 dBm <−80 dBc typical, <−90 dBc (7 to 13.6 GHz)


• Full-span sweep time: <0.7 seconds (13.6 GHz) Resolution Bandwidth


• 10 Hz to 3 MHz in 1-3-10 steps

Key Features

• Built-in Tracking Generator: 5 MHz to 7 GHz, output −20 to 0 dBm in 1 dB steps


• Modulation Analysis: AM/FM/ASK/FSK with option AMA supporting 10 MHz to 13.6 GHz (AM/FM)


• Spectrum Monitoring: Spectrogram display with record and playback


• Channel Scanner: Simultaneous measurement of up to 20 channels


• Cable and Antenna Testing: Return loss, cable loss, and distance-to-fault measurements (with optional TG7 module)


• Power Measurement: Peak and average power with Keysight USB power sensors


• Multiple Detectors: Normal, positive/negative peak, sample, average (video/RMS/voltage), quasi-peak (EMC option)


• Four Traces: Clear/write, maximum hold, minimum hold, average functions


• Radio Standards: Pre-defined and user-defined GSM, CDMA, W-CDMA, LTE, WiMAX with channel standards


• Task Planner: Reduces test setup time by 95%

Typical Applications Field troubleshooting, signal interference investigation, transmitter and receiver verification, cable/antenna characterization, modulation quality assessment, and multi-channel signal monitoring in wireless networks and RF systems.

Compatibility & Integration Note: This product has been discontinued by Keysight. The FieldFox series is the designated replacement platform.