Portable Keysight N9925A FieldFox Handheld Microwave Vector Network Analyzer 9 GHz

• VNA frequency range: 30 kHz to 9 GHz
• Measurements on standard instrument: Transmission/reflection or S21 and S11, magnitude and phase
• Calibrations on standard instrument: CalReady, OSL, response, and enhanced response cal
• Carry the lightest handheld VNA at only 6.6 lb.
• Easily customized to your specific application with optional software
• Expand capabilities with optional two-port VNA, time-domain reflectometer, vector voltmeter, cable and antenna analyzer, and more
• Measure average and pulse power easily with a USB power sensor (option)
• Measure all four S-parameters simultaneously with a single connection and up to 95 dB of dynamic range (option)

Options can be added to your order from the accessories section on the left side of this page.

Available options include:

• VNA time domain
• VNA full 2 port S-parameters
• TDR cable measurement
• Cable and antenna analysis
• Vector voltmeter
• USB power sensor support

FieldFox can be configured with full 2-port capability for measurements of all four S-parameters and full 2-port calibration.

With a full 2-port network analyzer, you can measure the forward and reverse characteristics of your component without having to disconnect, turn around, and reconnect it to the analyzer. Additionally, the full 2-port calibration gives you the best measurement accuracy possible.

FieldFox’s four independent, sensitive receivers provide 94 dB of dynamic range for measurement of high rejection, narrowband devices such as cavity filters. The receivers also enable full 2-port error correction with the unknown thru method, allowing users to measure non-insertable devices accurately and easily.

FieldFox’s calibration engine is the same engine that powers the well respected Keysight ENA and PNA network analyzers. FieldFox leverages Keysight microwave expertise to deliver consistent measurements with Keysight benchtop VNAs.

Dynamic range and maximum attenuation Dynamic range is the difference between the maximum output power available from FieldFox’s source and the noise floor of the second FieldFox, while ensuring that neither FieldFox’s ADC goes into overrange. Dynamic range also accounts for the loss of the power splitter. Dynamic range is applicable when testing devices such as filters, where there is low loss in the passband, and significant loss in the stopband, and both passband and stopband need to be on the display at the same time (same sweep). Maximum attenuation is the difference between maximum output power available from FieldFox’s source and the noise floor of FieldFox. It also accounts for the loss of power splitter. Maximum attenuation is applicable when testing devices such as cables, which have relatively uniform loss over the swept frequency range. The values shown are based on the recommended minimum RBW of 3 kHz when the frequency references are locked via GPS, and 300 kHz when the frequency references are unlocked. Locking the frequency references to GPS allows for greater frequency accuracy of the FieldFox units and use of a narrower RBW, which in turn results in a lower DANL, and hence a wider measurement range. When the GPS signals cannot be present at all times, the GPS hold-over mode can be used.

Absolute power and gain measurement uncertainties Verified with input level of -10 dBm, peak detector, 10 dB attenuation, preamplifier off, all settings autocoupled, no warm-up required. Includes frequency response uncertainties. Assumes an ERTA system using a Keysight 11667A, 11667B, or 11667C power splitter.

General Information

Power supply External DC input 15 to 19 VDC, 40 watts maximum when battery charging

External AC power adapter

Efficiency level IV

Input 100 to 250 VAC, 50 to 60 Hz, 1.25 to 0.56 A

Output 15 VDC, 4 A

Power consumption 14 watts typical, mode dependent

Battery Lithium ion 10.8 V, 4.6 A-h

Operating time 3.5 hours (typical), mode dependent

Charge time A fully discharged battery takes about 1.5 hours to recharge to 80%. Four hours to 100%. Discharge temperature limits —10 to 60°C, ≤ 85% RH Charge temperature limits 0 to 45°C, ≤ 85% RH Storage temperature limits —20 to 50°C, ≤ 85 % RH

The battery packs should be stored in an environment with low humidity.

Extended exposure to temperatures above 45°C could degrade battery performance and life.

Test port connectors ≤ 18 GHz models Type-N (f) 26.5 GHz models 3.5 mm (m) for FieldFox microwave analyzer, N9918A and FieldFox microwave VNA analyzer, N9928A.

On FieldFox SA N9938A, you may choose 3.5 mm (m) or Type-N (f). Type-N (f) port connector is not available for the 26.5 GHz microwave analyzer, N9918A or 26.5 GHz microwave VNA analyzer, N9928A ≥ 32 GHz models NMD 2.4mm (m), torque .9 Nm or 8 in-lb, use torque wrench N9910X-886 Display 6.5” transflective color LCD-LED backlit Headphone jack connector 3.5 mm (1/8 inch) miniature audio jack USB-A, 2-ports Hi-speed USB 2.0 Mini USB, 1 port1 Hi-speed USB 2.0; used for SCPI programming; USBTMC (USB IEEE488) Keyboard USB keyboards are supported (user must supply their own keyboard) LAN Connector RJ-45 Used for programming, data saving, remote control, and connection to DataLink software N991xA, N992xA, N993xA 100/10 base-T (auto switching) N995xA, N996xA 1000/100/10 base-T (auto switching) SCPI over LAN using sockets and VX11 (LAN IEEE488); HTTP 1 SCPI over USB for the N991x/2x/3x models is only available for serial number prefix starting with MY5607/SG5607/US5607 or upgraded with Option N9910HU-100/200/300/400.

Programming SCPI, using the built-in LAN interface,

BenchVue Languages English, Spanish, German, Italian, French, Russian, Japanese, Chinese, Turkish, Korean, and Portuguese

Preset User preset for both mode preset and complete system preset Limit lines

List of Options