Connector Options

USB2887/2888/2887A/2888A are versions of the acquisition card with built-in terminal blocks.

USB2887/2888/2887A/2888A -V versions feature VHDCI connectors.

AD Analog Input

ADC Resolution

16-bit

Input Channels

16/32/16/32 single-ended or differential

Input Range

±10V, ±5V, ±2.5V, ±1.25V

Sampling Rate

500/500/250/250 KS/s

Sampling Mode

On-demand single-point acquisition, finite-point acquisition, continuous acquisition

Memory Depth

8K-point FIFO

Trigger Source

Software forced trigger, analog trigger, external digital trigger

Calibration Method

Software auto-calibration

CTR Counter

Number of Channels

1/4/1/4 multifunctional counter channels

Counter Bit Width

32-bit

Counter Functions

CI: Edge counting, frequency measurement, period measurement, half-period measurement, pulse measurement, pulse width measurement, bi-directional edge interval measurement, position measurement (based on incremental encoder)

CO: Pulse output

Sampling Mode

CI: On-demand single-point sampling, finite-point sampling, continuous sampling

CO: Single-point (on-demand) generation, finite-point generation, continuous generation

Memory Depth

2K-point FIFO

DI/O

Number of Channels

12 lines
(USB2887/2887A)

Port0: 8 lines

Port1: 4 lines, multiplexed with PFI0~3

24 lines
(USB2888/2888A)

Port0: 8 lines

Port1: 8 lines, multiplexed with PFI0~7

Port2: 8 lines, multiplexed with PFI8~15

Configuration Method

Program-controlled I/O direction and status

Sampling Mode

On-demand single-point sampling, finite-point sampling, continuous sampling

Input/Output Rate

10MHz

Memory Depth

2K-point FIFO

Single-Channel Drive
Capability Up To

-20mA @ Source current
25mA @ Sink current