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N4850A

N4850A DigRF v3 Acquisition Probe N4860A DigRF v3 Stimulus Probe

HP => Agilent Technologies 

BB-IC/RF-IC Integration (continued)

The N4850A acquisition probe

captures transactions on the Tx

and Rx paths of the DigRF v3

interface independently. Control

packets are decoded and

displayed on the logic analyzer’s

packet viewer as illustrated in

Figure 7. These capabilities

enable you to track the status and

control flow of the system under

test to identify defects and tune

performance parameters.

There is a two-step process for

analyzing the digital IQ data

packets that are acquired by the

N4850A acquisition probe. Using

the signal extractor tool, the

headers and padding are

removed, leaving the digital IQ

representation of the RF signal.

The IQ data then can be analyzed

by the vector signal analysis

package to evaluate EMV,

sidebands and other critical

RF parameters. This capability

enables systems integrators to

characterize RF-IC behavior and

adjust DSP algorithms or the

RF-IC configuration to optimize

performance.

Figure 7. Packet view of DigRF v3 control traffic

Figure 8. Vector signal analysis of DigRF v3 digital IQ

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