4 OperationFigure 4-1 Channel status display ................................................................................................................................ 4-2Figure 4-2 Display organization for multiplexer channels........................................................................................... 4-2Figure 4-3 Model 7015 programming channel assignments ........................................................................................ 4-3Figure 4-4 High-speed scanning connections............................................................................................................... 4-6Figure 4-5 Four-wire resistance testing........................................................................................................................ 4-8Figure 4-6 Low-resistance testing ................................................................................................................................ 4-9Figure 4-7 Configuration for current gain test ........................................................................................................... 4-11Figure 4-8 Connecting multiplexer and matrix cards together................................................................................... 4-12Figure 4-9 Thermoelectric generation ........................................................................................................................ 4-13Figure 4-10 Channel resistance .................................................................................................................................... 4-13Figure 4-11 Path isolation resistance............................................................................................................................ 4-14Figure 4-12 Voltage attenuation by path isolation resistance ...................................................................................... 4-14Figure 4-13 Power line ground loops ........................................................................................................................... 4-15Figure 4-14 Eliminating ground loops ......................................................................................................................... 4-165 Service InformationFigure 5-1 Path resistance test connections.................................................................................................................. 5-4Figure 5-2 Differential and common mode offset current test connections................................................................. 5-5Figure 5-3 Contact potential test connections .............................................................................................................. 5-6Figure 5-4 Bank isolation test connections .................................................................................................................. 5-7Figure 5-5 Channel-to-channel isolation test connections ........................................................................................... 5-9Figure 5-6 Differential isolation test connections ...................................................................................................... 5-11Figure 5-7 Common-mode isolation test connections................................................................................................ 5-13Figure 5-8 Model 7015 block diagram....................................................................................................................... 5-14Figure 5-9 Start and stop sequences ........................................................................................................................... 5-15Figure 5-10 Transmit and acknowledge sequence ....................................................................................................... 5-15viArtisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com