Datasheet

AFE44x0SPO2EVM FAQs www.ti.com
9.3 Check TXP and TXM Waveforms
TXP and TXM waveforms are observed at TX_P (TP23) and TX_N (TP17). Figure 40 shows TXP and
TXM waveforms without connecting the pulse oximeter cable. Figure 41 shows TXP and TXM waveforms
after connecting the pulse oximeter cable.
Figure 40. TXP and TXM Without Pulse Oximeter Cable
Figure 41. TXP and TXM After Connecting the Pulse Oximeter Cable
36
AFE4400 and AFE4490 Development Guide SLAU480A–January 2013–Revised February 2013
Submit Documentation Feedback
Copyright © 2013, Texas Instruments Incorporated