Keithley KPCI-3130 AN free download

File name KPCI-3130_AN.pdf

Number 2266 Application Note System Tests With the KPCI-3130 Series Series Analog Output Card The load will be connected to the analog output in 2-wire Introduction mode as shown in Figure 1 and then connected in 4-wire mode Today, the electronics community is experiencing a migration using the sense line inputs as shown in Figure 2. The OUT0 and away from traditional test and measurement philosophies and GND signals will be connected to pins 1 and 19 respectively, and encompassing a more hybrid approach. Several years ago, if one the S0H and S0L signals will be connected to pins 2 and 20. were required to generate or to measure very precise data points, few solutions were available other than benchtop instrumenta- Analog tion. However, the continued evolution of electronic components has lead to the fabrication of precise voltage sources and high- OUT0 resolution A/D (analog/digital) and D/A hardware, creating a variety of new solutions. Analog Output DUT The ability to generate instrument quality analog voltages is available in the KPCI-3130 Series analog output boards. The KPCI-3130 is designed to the PCI-bus standard and provides a Return wide feature set that is typically not seen in PC-based plug-in analog output hardware. Two of the most unique characteristics GND of the board are the 4-wire remote sense feature and the 4-quadrant source/sink operation. The functionality of these Figure 1. Conventional 2-Wire Analog Output Connections features is illustrated in the following test examples. 4-Wire Remote Sense Test Description Analog The ability to perform 4-wire remote sense operations provides a OUT0 significant advantage over standard analog output hardware. This Sense HI feature becomes of critical importance when generating control signals over long distances. Significant voltage drops can occur S0H Analog as the result of cable resistances, device interconnections, and DUT