HONEYWELL FTA-T-02英文說(shuō)明,FTA-T-02卡件
64通道掃描，12位模擬到數(shù)字轉(zhuǎn)換器（ADC）是世界上密度最高、每通道板成本最低的電路板之一工業(yè)此外，它包含許多僅在更昂貴的產(chǎn)品。自動(dòng)掃描模式，自動(dòng)進(jìn)入通電，在所有輸入和存儲(chǔ)上執(zhí)行模數(shù)轉(zhuǎn)換它們位于專(zhuān)用通道雙端口寄存器中。這允許用戶操作沒(méi)有任何編程的電路板。用戶只需從雙端口讀取數(shù)據(jù)寄存器，始終包含該特定通道的最新轉(zhuǎn)換數(shù)據(jù)。
HONEYWELL FTA-T-02英文說(shuō)明還有四種其他ADC操作模式，允許在控制ADC操作。
VMIVME-3112板對(duì)于許多需要將大量差分輸入轉(zhuǎn)換為數(shù)字形式。過(guò)電壓保護(hù)輸入、輸入濾波器、可編程定時(shí)器和可編程跳線增益特性使電路板適用于工廠自動(dòng)化和儀表、過(guò)程控制、實(shí)驗(yàn)室儀表和一般數(shù)據(jù)采集系統(tǒng)。
以下主要功能的簡(jiǎn)要概述說(shuō)明了靈活性VMIVME-3112板的性能：a、 64個(gè)差分或單端輸入b、 在自動(dòng)掃描模式下通電-無(wú)軟件初始化必修的c、 持續(xù)數(shù)字化輸入通道并將結(jié)果存儲(chǔ)在專(zhuān)用通道雙端口寄存器（自動(dòng)掃描模式）d、 五種操作模式1、自動(dòng)掃描模式*2、隨機(jī)輪詢模式
3、隨機(jī)中斷模式4、掃描輪詢模式5、掃描中斷模式e、 跳線可選掃描2到64個(gè)通道f、 VMEbus中斷可編程為在完成時(shí)中斷單個(gè)a/D轉(zhuǎn)換，或在完成16到64通道掃描g、 用戶可編程間隔計(jì)時(shí)器支持掃描所有通道每隔一段時(shí)間h、 跳線可編程增益1、10、100、200和500i、 0至+10 V、±5 V、±10 V的可選A/D范圍j、 低電平和高電平輸入：±10 mV至±10 Vk、 可選低通濾波器l、 過(guò)電壓保護(hù)輸入m、 5 x 106? 輸入阻抗n、 33 kHz轉(zhuǎn)換率o、 可選輸出代碼：二進(jìn)制、偏移二進(jìn)制、帶標(biāo)志擴(kuò)展p、 前面板故障指示燈受程序控制，可用于任何目的q、 電路板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 ? 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
