About The Iq Analyzer Measurement Application - Agilent Technologies X Series Manual

About the IQ Analyzer Measurement
3
Application
This chapter provides information on using the IQ Analyzer Mode in your Agilent Signal
Analyzer. It also documents some of the available optional hardware that can be used in this
mode. This includes options such as EA3 (electronic attenuator) and preamp options (P02,
P08, P13, P26). The X-Series Option B25 must be used with the measurements found in IQ
Analyzer Mode since the optional wideband hardware cannot be accessed in other modes.
What Does IQ
The IQ Analyzer Mode makes frequency domain and time domain measurements. These
Analyzer Mode measurements often use alternate hardware signal paths when compared with a similar
Do?
measurement in the Signal Analysis Mode using the Swept SA measurement. These
frequency domain and time domain measurements can be used to output I/Q data results
when measuring complex modulated digital signals.
• Complex Spectrum Measurement (Frequency Domain)
• I/Q Waveform Measurement (Time Domain)
The following optional alternate hardware is typically used with IQ Analyzer Mode:
• Option EA3 provides an alternate attenuator that switches electronically. It has a
• Option B25 provides an alternate wideband digital IF signal path with a maximum
Chapter 3
This measurement is comparable to a precision microwave spectrum analyzer
measurement that also provides demodulated I/Q data for individual I and Q amplitude
data pairs.
This measurement is comparable to a precision vector signal analyzer measurement that
also provides demodulated I/Q data for individual magnitude and phase analysis.
maximum of 40 dB in 1 dB steps. (The standard attenuator is 70 dB maximum attenuation
in 2 dB steps.). This hardware may be accessed from within IQ Analyzer Mode, but only
with the narrowband IF path. It cannot be used with the B25 wideband path.
bandwidth of 25 MHz. This hardware can only be accessed from within measurements in
IQ analyzer mode and other demod measurements such as EVM for EDGE and 802.16
OFDMA or 89601A VSA mode.
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