06 | Keysight | FieldFox Handheld Analyzers - Configuration Guide
FieldFox RF and Microwave (Combination) Analyzer FAQs (continued)
Question Answer
10. What are the requirements for
Option 209?
Extended Range Transmission Analysis (ERTA) or Option 209 is a scalar measurement system based on the use of
two FieldFoxes. One FieldFox acts as the source and reference receiver, while the second FieldFox acts as the
measurement receiver. When different frequency models are used in an ERTA pair, the ERTA system frequency
range is limited to the lowest of the pair.
Required hardware
A. Two FieldFoxes. FieldFoxes can be any of these models:
– FieldFox microwave combination analyzers: N9913A, N9914A, N9915A, N9916A, N9917A, N9918A, N9950A,
N9951A, N9952A
– FieldFox microwave spectrum analyzers: N9935A, N9936A, N9937A, N9938A, N9960A, N9961A, N9962A
– ERTA cannot use N9912A, N9923A, N9925A, N9926A, N9927A or N9928A
The two FieldFoxes used in ERTA do not have to be the same model.
ERTA requires the following options on Combo FieldFoxes.
(N9913A, N9914A, N9915A, N9916A, N9917A, N9918A, N9950A, N9951A, N9952A)
– Option 210, VNA transmission/reflection
– Option 233, spectrum analyzer
ERTA requires the following options on SA FieldFoxes.
(N9935A, N9936A, N9937A, N9938A, N9960A, N9961A, N9962A)
– Option 220, tracking generator
Both FieldFoxes (the one used as the source, and the other used as the receiver) must have the options listed
above. The ERTA option (209) cannot be installed unless 210 and 233 are present on a combo analyzer, or 220 is
present on an SA analyzer.
With either the Combo or SA FieldFoxes, the following options are highly recommended:
– Option 235, preamplifier – this option increases the measurement dynamic range by increasing the received
signal power.
– Option 307, GPS receiver – this option increases the dynamic range by increasing the frequency accuracy
and permitting the use of a narrower RBW.
B. Power splitter, two-resistor model, Keysight 11667A, 11667B, or 11667C. Other power splitters can be used but the
specifications listed are based on the match and tracking performance of 11667A, 11667B, or 11667C. Three-resist-
er power splitters are not recommended.
C. N9910X-712, Trigger/Reference-in cable, SMA (m) to BNC(f), 1 m, quantity two
D. N9910X-713, Trigger/Reference-out cable, SMB (m) to BNC (m), 1 m, quantity two
E. LAN connection – For ERTA, the two FieldFoxes communicate via a LAN connection. For a direct connection, a
cross-over LAN cable is required. Alternately, both analyzers can be on a local area network.
Recommended accessory
F. N9910X-825, GPS Antenna
11. What is included with
Option 355?
FieldFox analog demodulation has two parts: (1) Tune and listen, and (2) AM/FM metrics. Tune and listen is available
with the purchase of the spectrum analyzer option 233. AM/FM metrics becomes available when Option 355 is
purchased. AM/FM metrics provides the user with RF spectrum view, demodulated baseband signal waveform,
carrier power, frequency deviation, SINAD and more.
12. What is included with
Option 350?
Real-time spectrum analyzer (RTSA) or Option 350 provides real-time measurements on a FieldFox. The FieldFox
must be equipped with spectrum analysis capability. The preamplifier option is recommended, as elusive signals
often have low power levels. The maximum real-time bandwidth for option 350 is 10 MHz. RTSA includes trace
recording and playback capabilities. It does not include a frequency-mask trigger (FMT).
13. How do I determine if my
FieldFox has CPU2 fast
processor?
All N995xA and N996xA analyzers include CPU2. On other FieldFox models, if the serial number starts with
MY5607/SG5607/US5607, then it has CPU2. If the serial number prefix is different, then the analyzer firmware
needs to be checked to see if the instrument has been upgraded with N9910HU-100/200/300/400 to have CPU2.
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