Features

• Parallel design, 2 independent programmable gain channel
• Achieves ±40mV~±40V voltage signal acquisition with toolkit
• High accuracy of measurement with phase consistency
• Triggering sources: software (manual), internal, external triggering
• Standard PC104 board card designed
• Small-sized structure, stacked connection and easy bus drive

Application

• For any PC104 embedded system

Overview

By adopting synchronous parallel design, two pieces high-speed ADCs, 20M small scaled encapsulated crystal oscillator and two independent programmable gain channels composed of high speed precise operational amplifier and precise attenuation filter network are integrated into the card to achieve large dynamic signal acquisition range of ±40Mv~±40V with a pre-amplifier. Gain errors and zero-bias of each channel can be removed independently by DAQ controller’s fine-tuning which facilitates this product with high measurement accuracy and phase consistency. No manual adjustable component insures the high reliability and stability of the products.

Analog Input

The Acquisition card has designed the independent time base and the clock controller. While cascading multiple acquisition of system, each card may have different sampling rate. The trigger lines and clock lines of each board cascade through local bus connecter. Under the control of the unified clock and triggering, the acquisition system achieves the full-synchronized acquisition. The maximum sampling rate of PEM2712 A/D is 20Msps with 18- level sampling rate setting. Each channel can separately control the gain setting with a range of ±1V or ±10V. The maximum sampling depth of each channel can achieve up to 4Msa. The specially designed ring buffer facilitates pre-trigger sampling function, which is suitable for signal recording of transience process of engineering. Delay of pre-trigger and post-trigger samples can cover the maximum period.

Triggering Sources

PEM2712 has wide range of triggering sources, including software (manual), internal and external triggering. Internal triggering level can be set up freely within current range with options of triggering conditions of rising edge, falling edge, internal dual-threshold, external dual-threshold; external signal complies with TTL electrical standard with options of effectiveness of rising edge and falling edge. Through setting multiple triggering modes, accurate capture of various characteristic signals can be guaranteed.

Specification

Characteristics

Operating System

• Sampling Rate (sps): 1k～20M
• A/D resolution: 12 bits
• DC accuracy: ±0.2%(FS)
• Input channel: Parallel synchronous 2 channel
• Input impedance: 1MΩ//25pF
• Inter-channel phase difference: <1°(300kHz)
• Crosstalk: -85dB
• Voltage input: ±1V、10V
• Bandwidth of input signal:
  DC: 0～6MHz
• Memory depth of each channel (samples): 4M/CH(extended to 8M/CH、16M/CH)
• Triggering mode: manual, external and internal triggering. Internal triggering conditions includes rising edge and falling edge. The triggering level is adjustable.
• Interface: PC104 8bits bus

• Windows 95/98/ME
• Windows 2000/XP

Software

• DasView2.0

Toolkit

• Provide DEMO source code under common development platforms and technical support for development.

Requirement on Environment

• Operating Temperature: 0℃ to 40℃
• Storage Temperature: -40℃ to 60℃
• Relative Humidity: 40℃ 20 to 90% (no condensation)

Accessory

Odering Information

Model

Description

Model

Max. Rate(sps)

Memory Depth(sa)

PEM-RELAY16

PC104 optical isolation relay control panel

PEM2712C

20M

4M/CH

PEM2712B

10M

4M/CH

PEM2712A

5M

4M/CH

PEM-AMP206

PC104 Pre-amplifying controller

Note: Memory depth can be extended to 8M/CH or 16M/CH