HONEYWELL FTA-T-02英文说明,FTA-T-02卡件
64通道扫描，12位模拟到数字转换器（ADC）是世界上密度最高、每通道板成本最低的电路板之一工业此外，它包含许多仅在更昂贵的产品。自动扫描模式，自动进入通电，在所有输入和存储上执行模数转换它们位于专用通道双端口寄存器中。这允许用户操作没有任何编程的电路板。用户只需从双端口读取数据寄存器，始终包含该特定通道的最新转换数据。
HONEYWELL FTA-T-02英文说明还有四种其他ADC操作模式，允许在控制ADC操作。
VMIVME-3112板对于许多需要将大量差分输入转换为数字形式。过电压保护输入、输入滤波器、可编程定时器和可编程跳线增益特性使电路板适用于工厂自动化和仪表、过程控制、实验室仪表和一般数据采集系统。
以下主要功能的简要概述说明了灵活性VMIVME-3112板的性能：a、 64个差分或单端输入b、 在自动扫描模式下通电-无软件初始化必修的c、 持续数字化输入通道并将结果存储在专用通道双端口寄存器（自动扫描模式）d、 五种操作模式1、自动扫描模式*2、随机轮询模式
3、随机中断模式4、扫描轮询模式5、扫描中断模式e、 跳线可选扫描2到64个通道f、 VMEbus中断可编程为在完成时中断单个a/D转换，或在完成16到64通道扫描g、 用户可编程间隔计时器支持扫描所有通道每隔一段时间h、 跳线可编程增益1、10、100、200和500i、 0至+10 V、±5 V、±10 V的可选A/D范围j、 低电平和高电平输入：±10 mV至±10 Vk、 可选低通滤波器l、 过电压保护输入m、 5 x 106Ω 输入阻抗n、 33 kHz转换率o、 可选输出代码：二进制、偏移二进制、带标志扩展p、 前面板故障指示灯受程序控制，可用于任何目的q、 电路板ID寄存器
The VMIVME-3112 64-Channel Scanning, 12-Bit Analog-to-Digital
Converter (ADC) is one of the highest density/lowest cost per channel boards in the
industry. In addition, it contains many features found only on more expensive
products. The AUTO SCANNING MODE, which is automatically entered on
power-up, performs Analog-to-Digital (A/D) conversions on all inputs and stores
them in a dedicated channel dual port register. This allows the user to operate the
board without any programming. The user simply reads the data from the dual port
registers, which always contain the latest converted data for that particular channel.
There are four other ADC operating modes which allow greater flexibility in
controlling the ADC operation.
The VMIVME-3112 Board is useful for many applications which require a
large number of differential inputs to be converted to digital form. Overvoltage
protected inputs, input filters, programmable timers, and jumper-programmable
gain features lend the board to such applications as factory automation and
instrumentation, process control, laboratory instrumentation, and general data
acquisition systems.
The following brief overview of principal features illustrates the flexibility
and performance that is available with the VMIVME-3112 Board:
a. 64 differential or single-ended inputs
b. Powers-up in AUTO SCANNING MODE - no software initialization
required
c. Continually digitizes input channels and stores the results in a
dedicated channel dual port register (AUTO SCANNING MODE)
d. Five operating modes
1. AUTO SCANNING MODE *
2. RANDOM POLL MODE
3. RANDOM INTERRUPT MODE
4. SCANNING POLL MODE
5. SCANNING INTERRUPT MODE
e. Jumper-selectable scanning of 2 to 64 channels
f. VMEbus interrupts may be programmed to interrupt upon completion
of a single A/D conversion, or upon completion of a 16- through
64-channel scan
g. User-programmable interval timer supports scanning of all channels
at periodic intervals
h. Jumper-programmable gains of 1, 10, 100, 200, and 500
i. Selectable A/D ranges of 0 to +10 V, ±5 V, ±10 V
j. Low-level and high-level inputs: ±10 mV to ±10 V
k. Optional low pass filter
l. Overvoltage protected inputs
m. 5 x 106 Ω input impedance
n. 33 kHz conversion rate
o. Selectable output code: binary, offset binary, two's complement with
sign extension
p. Front panel Fail LED is under program control and may be used for
any purpose
q. Board ID register
