NI PXIe-5653模擬信號(hào)發(fā)生器
1.產(chǎn) 品 介 紹
品牌：NI
型號(hào)：NI PXIe-5653
產(chǎn)品說(shuō)明：模擬信號(hào)發(fā)生器
優(yōu)勢(shì)：供應(yīng)進(jìn)口原裝正品，專業(yè)停產(chǎn)配件。
2.產(chǎn) 品 詳 情 資 料：
NI PXIe-5653使用相關(guān)中繼器/轉(zhuǎn)換器。復(fù)雜的多點(diǎn)配置包含一個(gè)或多個(gè)多點(diǎn)部分，其中隔離中繼器/轉(zhuǎn)換器作為其中一個(gè)分支。在簡(jiǎn)單和復(fù)雜的多點(diǎn)配置中，NI PXIe-5653主設(shè)備下游的變送器可以一直打開。由于只有一個(gè)設(shè)備（主設(shè)備）向下游傳輸，因此通信線路不會(huì)發(fā)生爭(zhēng)用。在簡(jiǎn)單的多點(diǎn)配置中，只要設(shè)備在空閑時(shí)三態(tài)驅(qū)動(dòng)程序，并且只有在有東西要傳輸時(shí)才打開驅(qū)動(dòng)程序，那么在上行傳輸時(shí)就不會(huì)發(fā)生爭(zhēng)用。Series 90-70和Series 90-30 CMM的情況就是如此。然而，在復(fù)雜的多點(diǎn)配置中，必須采取特殊步驟來(lái)切換隔離中繼器/轉(zhuǎn)換器的上游變送器。切換上游變送器。NI PXIe-5653為了使RS-422驅(qū)動(dòng)程序在隔離中繼器/轉(zhuǎn)換器的J2端口激活，J處的RTS輸入必須為真。J端口上RS-422驅(qū)動(dòng)器的狀態(tài)取決于裝置上開關(guān)的位置。當(dāng)開關(guān)處于中間位置時(shí)
lated Repeater/Converter is used. Complex multidrop configurations contain one or more multidrop sections where an Isolated Repeater/Converter is included as one of the drops. In both simple and complex multidrop configurations, the transmitters directed downstream from the master can be on at all times. NI PXIe-5653There will be no contention for the communication line because only one device (the master) transmits downstream. In simple multidrop configurations, there will be no contention when transmitting upstream as long as devices tri-state their drivers when idle and turn them on only when they have something to transmit. This is the case for the Series 90-70 and Series 90-30 CMMs. In complex multidrop configurations, however, special steps must be taken to switch the upstream transmitters of the Isolated Repeater/Converter. Switching Upstream Transmitters. For the RS-422 drivers to be active at the J2 port of the Isolated Repeater/Converter, the RTS input at JNI PXIe-5653 must be true. The state of the RS-422 drivers at the JNI PXIe-5653 port depends on the position of the switch on the unit. When the switch is in the center position
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