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diff --git a/DOCS/vt102-ug/chapter8.html b/DOCS/vt102-ug/chapter8.html new file mode 100644 index 0000000..890f8c6 --- /dev/null +++ b/DOCS/vt102-ug/chapter8.html @@ -0,0 +1,156 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<HTML> +<HEAD> +<TITLE>VT100.net: Digital VT102 User Guide</TITLE> +<LINK HREF="vt102-ug.css" TYPE="text/css" REL="stylesheet"> +</HEAD> +<BODY> +<DIV CLASS="navbar"><A HREF="http://vt100.net/"><IMG CLASS="button" SRC="vt100.net-logo.png" ALT="VT100.net" HEIGHT="16" WIDTH="102"></A> VT102 User Guide<TABLE WIDTH="100%"> +<COL SPAN="3" WIDTH="33%"> +<TBODY> +<TR> +<TD ALIGN="LEFT"><A HREF="chapter7.html">Chapter 7</A></TD> +<TD ALIGN="CENTER"><A HREF="contents.html">Contents</A></TD> +<TD ALIGN="RIGHT"><A HREF="chapter9.html">Chapter 9</A></TD> +</TR> +</TBODY> +</TABLE> +<HR></DIV> +<H1 ID="S8"><SPAN CLASS="chapnum">8</SPAN> Options</H1> +<H2 ID="S8.1">General</H2> +<P>The VT102 uses only one internally installed option, the 20 mA current +loop option (VT1XX-CA). This chapter describes the option, its installation, +and checkout. See <A HREF="chapter10.html">Chapter 10</A> for ordering information.</P> +<H2 ID="S8.2">20 mA Current Loop Interface Option <SPAN CLASS="notoc">(VT1XX-CA)</SPAN></H2> +<P>This optional interface connects the terminal to a computer. The 20 mA +option consists of a board and interface connector. When this option is +installed, you must set the modem control SET-UP feature to FDX A (full-duplex +with no modem control). The internal communication switches are +not used with the 20 mA option. <A TITLE="20 mA Connector and Pin Assignments" HREF="figure8-1.html">Figure 8-1</A> shows the 20 mA current loop +interface connector and pin assignments.</P> +<P CLASS="note">NOTE: The terminal uses either the 20 mA or standard modem interface. +If you use the standard modem interface with the 20 mA option, unplug +the cable connecting the option to the terminal controller board.</P> +<H2 ID="S8.3">Option Installation</H2> +<P>Install the option by using the following procedure (<A TITLE="20 mA Connector and Pin Assignments" HREF="figure8-1.html">Figure 8-1</A>).</P> +<OL> +<LI>Turn the power switch off (0) and unplug power cord.</LI> +<LI>Unplug keyboard, communication, printer, and composite video output +cables.</LI> +<LI>Loosen the two captive screws holding the access cover in place +(<A TITLE="Access Cover Screw Locations" HREF="figure8-2.html">Figure 8-2</A>).</LI> +<LI>Pull the access cover straight out from the back of the terminal, until +loose. Then move the cover to the left, off the supporting studs. Finally, +remove the access cover by pulling straight out (<A TITLE="Access Cover Removal" HREF="figure8-3.html">Figure 8-3</A>).</LI> +<LI>Install the 20 mA option board in the access cover by using the three +Phillips head screws provided (<A TITLE="20 mA Board Installation" HREF="figure8-4.html">Figure 8-4</A>).</LI> +<LI>Install the 20 mA connector to the bottom of the access cover by using +the two spacers and two hex head screws provided.</LI> +<LI>Install the 20 mA loopback connector around a spacer holding the 20 +mA connector to the access cover. This prevents the loss of the +loopback connector.</LI> +<LI>Set the 20 mA transmit (TRANS) and receive (REC) switches to the +proper configuration (<A TITLE="20 mA Board Configuration" HREF="figure8-5.html">Figure 8-5</A>). +<P>The switches determine if the transmitter and receiver of the 20 mA +interface are active or normal (passive). Usually, the switches are +set for normal (passive) operation. Passive means the terminal does +not supply the 20 mA current used when communicating. Active +means the terminal supplies the 20 mA current when communicating.</P> +<P CLASS="note">NOTE: You must set these switches for normal (passive) operation +to perform the loopback self-test. The test verifies operation of the +20 mA option after installation.</P></LI> +<LI>Connect the adapter cable provided with the option to the 20 mA +board. Place the access cover next to its opening in the back of the +terminal. Connect the other end of the adapter cable to the connector +on the terminal controller board.</LI> +<LI>Hold the access cover straight up and move it to the right side of the +terminal opening. Push the access cover into the opening and feel +for the studs on the right in the terminal. Push the access cover onto +the studs until the cover is in place. <A TITLE="Access Cover Removal" HREF="figure8-3.html">Figure 8-3</A> shows how the access +cover fits on the studs.</LI> +<LI>Tighten the two captive screws that hold the access cover in place +(<A TITLE="Access Cover Screw Locations" HREF="figure8-2.html">Figure 8-2</A>). +<P CLASS="note">CAUTION: You may damage the access cover by tightening the +captive screws too much.</P></LI> +<LI>Perform the following option checkout procedure.</LI> +</OL> +<H2 ID="S8.4">Option Checkout</H2> +<P>The data loopback test verifies the 20 mA current loop option can transmit +and receive characters. Characters transmitted during the test pass +through the loopback connector back to the terminal. The test checks +these characters to verify the option's operation. Perform the data loopback +self-test by using the following procedure.</P> +<OL> +<LI>Turn the power switch off (0) and unplug the power cord (<A TITLE="20 mA Connector and Pin Assignments" HREF="figure8-1.html">Figure 8-1</A>).</LI> +<LI>Unplug the communication cable.</LI> +<LI>Install the 20 mA loopback connector (DIGITAL PN 70-15503-00) +supplied with the option (<A TITLE="20 mA Loopback Connector" HREF="figure8-6.html">Figure 8-6</A>).</LI> +<LI>Remove the access cover and set the 20 mA TRANS and REC +switches by using the following procedure. +<P CLASS="note">NOTE: Remove the access cover only if the TRANS and REC +switches are not set to normal.</P> +<OL> +<LI>Unplug the keyboard, printer, and composite video output cables.</LI> +<LI>Loosen the two captive screws holding the access cover in place +(<A TITLE="Access Cover Screw Locations" HREF="figure8-2.html">Figure 8-2</A>).</LI> +<LI>Pull the access cover straight out the back of the terminal, until +loose. Then, move the cover to the left, off the supporting studs. +Finally, remove the access cover by pulling straight out (<A TITLE="Access Cover Removal" HREF="figure8-3.html">Figure 8-3</A>). +<P CLASS="note">CAUTION: You may damage the access cover by tightening the +captive screws too much.</P></LI> +<LI>Connect the keyboard cable.</LI> +</OL></LI> +<LI>Turn the power switch on (1). The terminal performs the power-up +self-test.</LI> +<LI>Enter SET-UP and select: +<UL> +<LI>Off-line (Transmit and receive speeds do not have to be the same).</LI> +<LI>ANSI/VT52 SET-UP feature to ANSI (SET-UP B switch 2-3 = 1)</LI> +<LI>Modem control SET-UP feature to FDX A.</LI> +</UL></LI> +<LI>Start the data loopback self-test by using one of the following sequences. +<TABLE> +<COL STYLE="width:10em"> +<COL> +<TBODY> +<TR VALIGN="TOP"> +<TD><CODE>ESC [ 2 ; 2 y</CODE></TD> +<TD>Performs test once.</TD> +</TR> +<TR VALIGN="TOP"> +<TD><CODE>ESC [ 2 ; 10 y</CODE></TD> +<TD>Performs test continuously.</TD> +</TR> +</TBODY> +</TABLE> +<P>The single test displays the wait message while running. The test +ends with the following indications.</P> +<UL> +<LI>The wait message is erased.</LI> +<LI>ON LINE or OFF LINE turns on.</LI> +<LI>The cursor appears in the upper-left corner of the screen.</LI> +</UL> +<P>The continuous test also displays the wait messages while running. +The test ends only when it finds an error or power is turned off.</P> +<P>When either test finds an error, the terminal displays an error code. +An error means the option is not operating correctly. Call your local +Digital Field Service Office for assistance.</P></LI> +<LI>Turn the power switch off (0) and remove the loopback connector.</LI> +<LI>If you set the TRANS and REC switches in step 4, select the correct +switch settings.</LI> +<LI>Connect the communications, printer, and video output cables.</LI> +</OL> +<DIV CLASS="navbar"><HR> +<TABLE WIDTH="100%"> +<COL SPAN="3" WIDTH="33%"> +<TBODY> +<TR> +<TD ALIGN="LEFT"><A HREF="chapter7.html">Chapter 7</A></TD> +<TD ALIGN="CENTER"><A HREF="contents.html">Contents</A></TD> +<TD ALIGN="RIGHT"><A HREF="chapter9.html">Chapter 9</A></TD> +</TR> +</TBODY> +</TABLE> +<DIV CLASS="navbot">http://vt100.net/docs/vt102-ug/chapter8.html</DIV></DIV> +</BODY> +</HTML> |