Tektronix RSA6100A Series, Help Manual

Page: 359 / 415

Reference > Connecting Signals Other Outputs
Other Outputs
The IF and IQ output settings appear only when the option is installed.
Analog IF Output
Analog IF Output enables you to use the spectrum analyzer as a high-quality downconverter. The
instrument will shift the RF input signal down to a frequency that an oscilloscope can display.
The BW drop-down list allows you to apply fi lters to the signal. The 120 MHz fl at-top fi lter selection
provides the widest possible bandwidth out, which means faster rise times but results in more overshoot
and other aberrations. The Gaussian
fi lter reduces the bandwidth out and reduces aberrations. The BW
setting is enabled only when the IF Output is On. The selections are 120 MHz (Flat-Top) and 60 MHz
(Gaussian) . Default: 120 MHz.
IQ Output
The Digital IQ Output transmits the digitized RSA6100A data for capture and storage by external
equipment. The I/Q data is provided in 16-bit, two’s complement format, along with clock and data-valid
signals.
There are three selections available for the IQ Output: Off, On, and Test. When in the “Off” position, the
IQ Output is disabled, and all lines are static. When in the “On” position, the data is output as described in
the
RSA6100A Series Real-Time Spectrum Analyzer Speci fi cations and Performance Veri fi cation
Technical Reference (Tektronix part number 077-0251-XX).
Use the “Test” position to verify operation when setting up your equipment. When in the “Test (Counting
Pattern)” position, the I channel data will be counting up and the Q channel data will be counting down.
The EXT_IQ_CLK and EXT_IQ_DAV signals will operate at a rate consistent with the instrument SPAN
setting.
RSA6100A Series Real-Time Spectrum Analyzers Help
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