IS230TBAIH2C控制燃機(jī)卡件，GE使用在哪里
EIA-232-D標(biāo)準(zhǔn)定義了該系統(tǒng)的電氣和機(jī)械方面串行接口。該接口采用不平衡（單端）信令通常與DB25連接器一起使用，盡管其他連接器樣式有時(shí)也會(huì)使用（例如DB9和RJ45）。表A-1列出了標(biāo)準(zhǔn)EIA-232-D互連。中未列出所有管腳該表在每個(gè)應(yīng)用中都是必要的。要正確解釋信息，請(qǐng)記住EIA-232-D串行開發(fā)了將終端連接到調(diào)制解調(diào)器的接口。串行數(shù)據(jù)頁(yè)發(fā)送設(shè)備位于傳輸數(shù)據(jù)（TxD）線上，并到達(dá)接收端接收數(shù)據(jù)（RxD）線上的設(shè)備。
IS230TBAIH2C控制燃機(jī)卡件當(dāng)計(jì)算設(shè)備在沒(méi)有調(diào)制解調(diào)器的情況下互連，其中一個(gè)單元必須配置為終端（數(shù)據(jù)終端設(shè)備：DTE），另一個(gè)作為調(diào)制解調(diào)器（數(shù)據(jù)電路終端設(shè)備：DCE）。因?yàn)橛?jì)算機(jī)通常配置為與終端一起工作，它們被稱為配置為調(diào)制解調(diào)器在大多數(shù)情況下。1.EIA-232-D高信號(hào)電平為+3至+15伏。低水平是-3至-15伏。并聯(lián)連接裝置可能會(huì)產(chǎn)生超出范圍的電壓，這違反了規(guī)范。2.EIA-232-D接口旨在將終端連接到調(diào)制解調(diào)器當(dāng)連接計(jì)算機(jī)時(shí)沒(méi)有調(diào)制解調(diào)器，一臺(tái)計(jì)算機(jī)必須配置為調(diào)制解調(diào)器，另一臺(tái)計(jì)算機(jī)必須配置為調(diào)制解調(diào)器作為終端。接口特性EIA-232-D接口標(biāo)準(zhǔn)規(guī)定了串行二進(jìn)制文件的所有參數(shù)使用不平衡線路在DTE和DCE設(shè)備之間進(jìn)行數(shù)據(jù)交換。適用于MVME162的EIA232-D發(fā)射器和接收器參數(shù)為在表A-2和A-3中列出。MVME162符合EIA-232-D規(guī)范。注意，雖然EIA-232-D標(biāo)準(zhǔn)建議使用短互連電纜如果電纜長(zhǎng)度超過(guò)50英尺（15m），則允許使用更長(zhǎng)的電纜在接口點(diǎn)測(cè)量的總負(fù)載電容，包括信號(hào)終止器不超過(guò)2500pF。EIA-530連接EIA-530接口在功能上補(bǔ)充了EIA-232-D接口。這個(gè)EIA-530標(biāo)準(zhǔn)定義了該接口的機(jī)械方面，即用于傳輸串行二進(jìn)制數(shù)據(jù)，包括同步和異步。它適用于平衡（雙端）和不平衡（單端）信令，并提供更高數(shù)據(jù)的可能性使用相同的DB25連接器時(shí)，速率高于EIA-232-D。表A-4列出了串行端口B上可用的EIA-530互連（前面板上的串行端口2），當(dāng)通過(guò)串行端口配置端口時(shí)作為EIA-530 DCE或DTE端口的接口模塊。
The EIA-232-D standard defines the electrical and mechanical aspects of this
serial interface. The interface employs unbalanced (single-ended) signaling
and is generally used with DB25 connectors, although other connector styles
(e.g., DB9 and RJ45) are sometimes used as well.
Table A-1 lists the standard EIA-232-D interconnections. Not all pins listed in
the table are necessary in every application.
To interpret the information correctly, remember that the EIA-232-D serial
interface was developed to connect a terminal to a modem. Serial data leaves
the sending device on a Transmit Data (TxD) line and arrives at the receiving
device on a Receive Data (RxD) line. When computing equipment is
interconnected without modems, one of the units must be configured as a
terminal (data terminal equipment: DTE) and the other as a modem (data
circuit-terminating equipment: DCE). Since computers are normally
configured to work with terminals, they are said to be configured as a modem
in most cases.1. A high EIA-232-D signal level is +3 to +15 volts. A low level is
-3 to -15 volts. Connecting units in parallel may produce outof-range voltages and is contrary to specifications.
2. The EIA-232-D interface is intended to connect a terminal to a
modem. When computers are connected without modems,
one computer must be configured as a modem and the other
as a terminal.
Interface Characteristics
The EIA-232-D interface standard specifies all parameters for serial binary
data interchange between DTE and DCE devices using unbalanced lines. EIA232-D transmitter and receiver parameters applicable to the MVME162 are
listed in Tables A-2 and A-3.The MVME162 conforms to EIA-232-D specifications. Note that although the
EIA-232-D standard recommends the use of short interconnection cables not
more than 50 feet (15m) in length, longer cables are permissible provided the
total load capacitance measured at the interface point and including signal
terminator does not exceed 2500pF.
EIA-530 Connections
The EIA-530 interface complements the EIA-232-D interface in function. The
EIA-530 standard defines the mechanical aspects of this interface, which is
used for transmission of serial binary data, both synchronous and
asynchronous. It is adaptable to balanced (double-ended) as well as
unbalanced (single-ended) signaling and offers the possibility of higher data
rates than EIA-232-D with the same DB25 connector.
Table A-4 lists the EIA-530 interconnections that are available at serial port B
(SERIAL PORT 2 on the front panel) when the port is configured via serial
interface modules as an EIA-530 DCE or DTE port.
