Description

Keysight N9933C
- Handheld spectrum analyzer
- Frequency range: 3 kHz to 4 GHz
- Test port connectors: type-N (f)
FieldFox Handheld Spectrum Analyzer (4 GHz)
The Keysight FieldFox N9933C is a handheld spectrum analyzer with frequency range of 3 kHz to 4 GHz.
The base model includes the following functionality:
- Basic spectrum analysis, four traces, different detector types, radio standard selection, limit lines
- Channel power, occupied bandwidth, adjacent channel power, spectrum emission mask
- AM/FM tune and listen, field strength measurements, antenna factors, frequency counter marker
Information on options
FieldFox “C” series analyzers are easily customized to your specific application with over twenty software options. For detailed information regarding options, please view this document beginning on page 13.
Please note, option part numbers are model specific and unique to each analyzer. For example, option 235 for an N9933C and N9934C would be N9933CU/235 and N9934CU/235 respectively.
- N9933CU/030 – Remote control capability
- N9933CU/208 – USB power sensor measurements versus frequency
- N9933CU/209 – Extended range transmission analysis (ERTA)
- N9933CU/220 – Full-band tracking generator
- N9933CU/235 – Pre-amplifier
- N9933CU/236 – Interference analyzer and spectrogram
- N9933CU/238 – Spectrum analyzer time gating
- N9933CU/302 – USB power sensor support
- N9933CU/307 – GPS receiver
- N9933CU/309 – DC bias variable-voltage source
- N9933CU/310 – Built-in power meter
- N9933CU/312 – Channel scanner
- N9933CU/330 – Pulse measurements
- N9933CU/350 – Real-time spectrum analyzer (RTSA)
- N9933CU/351 – I/Q analyzer
- N9933CU/352 – Indoor and outdoor mapping
- N9933CU/353 – IQ streaming
- N9933CU/355 – Analog demodulation
- N9933CU/356 – Noise figure measurements
- N9933CU/358 – EMF measurements
- N9933CU/361 – EMI measurements
- N9933CU/366 – Interference finder (manual mode)
- N9933CU/370 – Over the air LTE FDD measurements
- N9933CU/371 – Over the air LTE TDD measurements
- N9933CU/378 – Over-the-air (OTA) 5G NR measurements
- N9933CU/390 – Directional Finding – TDOA Node Support
- N9933CU/391 – Directional Finding – Angle of Arrival (AoA)
- N9933CU/B04 – Bandwidth, 40 MHz
- N9933CU/B10 – Bandwidth, 100 MHz
Selection information
Keysight offers three series of Field Fox analyzers – series A, B and C. While these share many similarities, there are also a number of differences. Please click here to view an overview of main differences within the three groups.
Combination analyzer (combo) = Cable and antenna tester (CAT) + Vector network analyzer (VNA) + Signal analyzer (SA)
Combination analyzers
| Model | CAT/VNA freq | SA freq | Test ports |
| N9912C | 3 kHz to 4/6.5/10 GHz | 3 kHz to 4/6.5/10 GHz | Type-N (f) |
| N9913C | 3 kHz to 4 GHz | 3 kHz to 4 GHz | Type-N (f) |
| N9914C | 3 kHz to 6.5 GHz | 3 kHz to 6.5 GHz | Type-N (f) |
| N9915C | 3 kHz to 10 GHz | 3 kHz to 10 GHz | Type-N (f) |
Signal analyzers
| Model | Frequency range | Test ports |
| N9933C | 3 kHz to 4 GHz | Type-N (f) |
| N9934C | 3 kHz to 6.5 GHz | Type-N (f) |
| N9935C | 3 kHz to 10 GHz | Type-N (f) |

Spectrum Analyzers/Spectrum Analyzers Template | |
|---|---|
| Bandwidth Range Max | 4 GHz |
| Bandwidth Range Min | 3 kHz |
| Noise Floor | -140 dB |
| Tracking Generator | Yes |
| Type(Spectrum Analyzers) | Handheld |
| Channel Power Measurement | Yes |
| Auto tuning | Yes |
| Marker Measurement | Yes |
| Preamplifier | Yes |
| AM/FM Demodulation | Yes |
| Power Meter | Yes |
Product General Attributes | |
| Safety Approval | CSA, UL |
| Interfaces I/O | LAN / Ethernet, USB |
| Storage | Internal Memory, SD Card, USB Flash Drive |
| Battery Type | Li-ion |
| Power Supply Voltage | Battery Powered |










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