This section is applicable to National Instruments card PC-1200AI. The PC-1200AI is a member of the National Instruments PC Series of I/O channel expansion cards for ISA computers. These cards are designed for high-performance data acquisition and control for many types of applications. The PC-1200AI has eight analog input channels that can be configured as eight single-ended or four differential inputs, a 12-bit successive-approximation ADC, and 24 lines of TTL-compatible digital I/O.
The V+/National Instruments I/O Driver provides the interface software between V+ and the PC-1200AI. The user is able to configure the PC-1200AI in a number of combinations and have those analog and digital inputs and outputs automatically available as I/O ports in a V+ design.
Port Naming Convention
The default port names for the PC-1200AI align with the naming convention used in the Lab-PC-1200/AI User Manual. The following illustration shows the pinout of the 50 pin external connector of the card. The names that are assigned to each pin are the same names that will be assigned to the I/O ports on the V+ design worksheet. For example, the analog line connected to pin 5 of the 50 pin connector will correspond to the I/O port labeled "ACH4".
PC-1200AI I/O Connector Pin Assignments