National Instruments 779409-01 Multifunction I/O Device

The part number 779409-01 from National Instruments is the identifying part number for the PCI-6123 Multifunction I/O Device. This 779409-01 device features 8 analog input channels. These inputs have a 16-bit resolution ADC, which ensures accurate signal representation. The maximum sampling rate for the analog inputs is 500 kS/s per channel while its minimum sampling rate is 0 kS/s, making it suitable for a wide range of applications. It has an input coupling of Dc with a maximum working voltage of ±11 V for all analog input channels.

It is equipped with protective features such as the overvoltage protection of ±36 V with all positive and negative input channels protected and input current rating during the overvoltage conditions is ±20 mA max. The 779409-01 also features input FIFO buffer size of 16 or 32 MS and data transfer methods of DMA, interrupts and programmed I/O.

The multifunction I/O device has 8 digital I/O channels with compatibility of TTL/CMOS. Its input voltage ranges are 2.0 to 5.0 V and output high voltage of 4.35 V. Its input buffer size and output buffer size is 2,044 bytes with a transfer rate of 10 Mwords/s. The 779409-01 device includes two 24-bit counters/timers that can be used for various timing and measurement functions such as frequency measurement, event counting, and pulse generation. Its base clocks have 20 MHz, 100 kHz counters with a frequency scaler of 10 MHz, 100 kHz. Its base clock accuracy is ±0.01% and has maximum source frequency of 20 MHz. 

The 779409-01 module requires a power of 1.9 A at +5 VDC, 1.55 A at +3.3 V and 81 mA at –12 V with +4.65 to +5.25 VDC at 1 A available at the I/O connector. Its physical dimensions are 31.2 cm × 10.6 cm (12.3 × 4.2 in.) making it compact. It is equipped with 68-pin male SCSI-II type I/O connector that allows it to integrate into other digital devices. It has a working temperature of 0 to 50 degrees Celsius and storage temperature of -20 to 70 degrees Celsius with a relative humidity range of 5% to 90%, noncondensing.