NI PCIE-6738 Data Acquisition Equipment

Description

NI PCIE-6738 Data Acquisition Equipment

Physical Characteristics
Number of channels…………………………………… 40 total, Port 0 (P0.<0..31>), Port 1 (P1.<0..7);
or PFI <0..39>
Ground reference ………………………………………. GND
Direction control……………………………………….. Each terminal individually programmable as
input or output
Pull-down resistor……………………………………… 51 kΩ, pulled down to ground
Input voltage protection1 ……………………………. -3 V to 8 V
Output impedence……………………………………… 75 Ω

Waveform DIO Functionality
Terminals used………………………………………….. Port 0 (P0.<0..31>)
Port/sample size………………………………………… Up to 32 bits
Waveform generation (DO) FIFO ……………….. 2,047 samples
Waveform generation (DI) FIFO…………………. 255 samples
DI Sample Clock frequency ……………………….. 0 to 10 MHz, system and bus activity dependent
DO Sample Clock frequency
Regenerate from FIFO………………………… 0 to 10 MHz
Streaming from memory……………………… 0 to 10 MHz, system and bus activity dependent
Data transfers……………………………………………. DMA (scatter-gather), programmed I/O
Digital line filter settings ……………………………. 160 ns, 10.24 µs, 5.12 ms, disable

Device-to-Device Trigger Bus

Input source NI PCIe-6612…………………………………….. RTSI <0..7>1 NI PXIe-6612 ……………………………………. PXI_TRIG <0..7>, PXI_STAR, PXIe-DSTAR<A,B>

Output destination NI PCIe-6612…………………………………….. RTSI <0..7>1 NI PXIe-6612 ……………………………………. PXI_TRIG <0..7>, PXIe_DSTAR

Output selections ………………………………………. 10 MHz Clock; frequency generator output; many internal signals

Debounce filter settings……………………………… 90 ns, 5.12 µs, 2.56 ms, custom interval, disable; programmable high and low transitions; selectable per input

For example, if you have an NI PCIe-6612 with 18 DIO/PFI lines configured as outputs toggling at 25 MHz and 22 DIO/PFI lines driving logic 1 into 6 mA loads, you would calculate power available at the +5 V terminal as follows: 18 × 17.5 mA = 315 mA 22 × 6 mA = 132 mA 1 A (max) – 315 mA -132 mA = 553 mA max available at +5 V power connector.