Chapter 4 Signal ConnectionsPCI E Series User Manual4-12 ©National Instruments CorporationAnalog Input Signal Connections♦ PCI-MIO-16E-1, PCI-MIO-16E-4, PCI-MIO-16XE-50,PCI-MIO-16XE-10, and PCI-6032EThe analog input signals for the PCI E Series boards are ACH<0..15>,AISENSE, and AIGND. The ACH<0..15> signals are tied to the 16analog input channels of your PCI E Series board. In single-endedmode, signals connected to ACH<0..15> are routed to the positive inputof the board PGIA. In differential mode, signals connected toACH<0..7> are routed to the positive input of the PGIA, and signalsconnected to ACH<8..15> are routed to the negative input of the PGIA.♦ PCI-6031E, PCI-6033E, and PCI-6071EThe analog input signals are ACH<0..63>, AISENSE, AISENSE2, andAIGND. The ACH<0..63> signals are tied to the 64 analog inputchannels of the boards. In single-ended mode, signals connected toACH<0..63> are routed to the positive input of the PGIA. In differentialmode, signals connected to ACH<0..7, 16..23, 32..39, 48..55> arerouted to the positive input of the PGIA, and signals connected toACH<8..15, 24..31, 40..47, 56..63> are routed to the negative input ofthe PGIA.Caution: Exceeding the differential and common-mode input ranges distorts yourinput signals. Exceeding the maximum input voltage rating can damagethe PCI E Series board and the computer. National Instruments is NOTliable for any damages resulting from such signal connections. Themaximum input voltage ratings are listed in the Protection column ofTables 4-1 to 4-3.In NRSE mode, the AISENSE signal is connected internally to thenegative input of the PCI E Series board PGIA when theircorresponding channels are selected. In DIFF and RSE modes, thissignal is left unconnected.AIGND is an analog input common signal that is routed directly to theground tie point on the PCI E Series boards. You can use this signal fora general analog ground tie point to your PCI E Series board ifnecessary.Connection of analog input signals to your PCI E Series board dependson the configuration of the analog input channels you are using and the!
