SBAU171D May 2010 – January 2016 ADS1198 , ADS1298
The Wilson Central Voltage (an average voltage between the right arm [RA], left arm [LA], and left leg [LL] connections) can be derived from any combination of positive and negative terminals from channels 1-4 and routed to the WCT pin. Likewise, the Augmented Leads (AVF, AVL, AVR) may be derived from channels 1-4 and routed to the negative terminal of channels 5, 6, and 7. Figure 15 shows these configurations; Figure 15a illustrates the central lead routing, and Figure 15b shows the augmented lead routing.