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NI 6232 (source output)

Open to close

0.45 μs

Close to open

2.15 μs

NI 6233 (sink output)

Open to close

0.4 μs

Close to open

0.4 μs

General-Purpose Counter/Timers

Number of counter/timers

2

Resolution

32 bits

Counter measurements

Edge counting, pulse, semi-period, period, two-edge separation

Position measurements

X1, X2, X4 quadrature encoding with Channel Z reloading; two-pulse

encoding

Output applications

Pulse, pulse train with dynamic updates, frequency division,equivalent

time sampling

Internal base clocks

80 MHz, 20 MHz, 0.1 MHz

External base clock frequency

0 MHz to 20 MHz

Base clock accuracy

50 ppm

Inputs

Gate, Source, HW_Arm, Aux, A, B, Z, Up_Down

Routing options for inputs

Any input PFI, RTSI, PXI_TRIG, PXI_STAR, many internal signals

FIFO

2 samples

Data transfers

Dedicated scatter-gather DMA controller for each counter/timer;

interrupts; programmed I/O

Frequency Generator

Number of channels

1

Base clocks

10 MHz, 100 kHz

Divisors

1 to 16

Base clock accuracy

50 ppm

Output can be available on any output PFI or RTSI terminal.

Phase-Locked Loop (PLL)

Number of PLLs

1

Reference signal

PXI_STAR, PXI_CLK10, RTSI <0..7>

Output of PLL

80 MHz Timebase; other signals derived from 80 MHz Timebase

including 20 MHz and 100 kHz Timebases

External Digital Triggers

Source

Any input PFI, RTSI, PXI_TRIG, PXI_STAR

Polarity

Software-selectable for most signals

Analog input function

Start Trigger, Reference Trigger, Pause Trigger, Sample Clock,

Convert Clock, Sample Clock Timebase

Analog output function

Start Trigger, Pause Trigger, Sample Clock, Sample Clock Timebase

Counter/timer functions

Gate, Source, HW_Arm, Aux, A, B, Z, Up_Down

Device-to-Device Trigger Bus

PCI devices

PXI devices

PXI_TRIG <0..7>, PXI_STAR

Output selections

10 MHz Reference Clock; frequency generator output; many internal

signals

Debounce filter settings

125 ns, 6.425 μs, 2.54 ms, disabled; high and low transitions

selectable per input

refers to RTSI <0..7> for PCI devices or PXI_TRIG <0..7> for PXI devices.

RTSI

Bus Interface

PCI or PXI

3.3 V or 5 V signal environment