Dolch Logic Instruments LAM 4850 Logic Analyzer
Fabricante:
Modelo:
LAM 4850
Fecha:
1980
Categoría:
Grupo:
Descripción:
Información
Logic analyzers have quickly become the most important tool available to the digital equipment specialist. Whether you use it to develop new systems or trouble shoot old systems, you will soon find it to be truly indispensible. The LAM 4850 is a third-generation product which brings together features and performance unavailable elsewhere. To utilize these features, you must take the time to both learn what they are and understand how to call the programs. The time invested in a thorough reading of this manual will yield an immediate return. The LAM 4850 has many modes of operation, configurations, and features which will help you solve even the most subtle Software or hardware problem. We hope that you will find the material presented below informative and easy to understand. Like our products, we are continually refining our manuals and solicit your comments. Continue reading for the details on how the LAM 4850 will help you solve your logic analysis tasks with speed and ease. 1.2 GENERAL The LAM 4850 is a 48 channel logic Analyzer. For convenience, each input port takes 8 inputs, and there are six input ports on the front panel. Clock and clock qualifiers enter through a rear panel port. Internally, the Analyzer is divided into three memory blocks, 16 bits wide and 1024 bits (words) deep, and each memory block can be clocked independently with external or internal clocks. These three memory blocks can be organized in five ways. "Menus" are used to display the various choices you have and guide you in the set up procedure. The TRACE menu is used to set up the desired configuration. A logic Analyzer may be thought of as a memory through which the 48 channels of data are streaming. Triggering the Analyzer means the opposite to triggering an Oscilloscope, since when we trigger, we stop the stream - literally freezing time - so that we may then examine the interval of time before and after the trigger. A four-level sequence must be satisfied by the input data prior to triggering the logic Analyzer. To aid you with the choices, a Trigger Menu is available. After we have captured the time around the trigger event (or after it, if desired) we then call upon the powerful compare and search features found in the COMPARE Menu. To allow the most sophisticated searching of data to be done, a Reference Memory is used. Troubleshooting intermittents is simple with the "baby sitting" features found in both the Trigger Menu and the Compare Menu. In the timing mode, a cursor with powerful features is available. No state of the art logic Analyzer would be complete without data communication and control ports, so users of IEEE bus and RS-232 as well as video output need not worry. Soon, personality probes and disassembler firmware will be available for many popular microprocessors.

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Servicio y Manual del usuario
Type manuel:
Servicio y Manual del usuario
Páginas:
163
Tamaño:
6.23 Mbytes (6537844 Bytes)
Idioma:
english
Revisión:
Manuel-ID:
Fecha:
01 enero 1980
Formato:
Documento Scaned, todo legible.
Fecha de subida:
16 agosto 2017
MD5:
aa42d01c8e00f121f4a7e3ba2864db88
Descargas:
254
Información
1 GENERAL ... 1-1 1.1 INTRODUCTION ... 1-1 1.2 GENERAL ... 1-1 1.3 SPECIFICATIONS ... 1-2 1.3.1 SIGNAL INPUTS . ... 1-2 1.3.2 SAMPLING ... 1-2 1.3.3 TRIGGERING ... 1-3 1.3.5 COMPARE FUNCTIONS ... 1-4 1.3.6 DISPLAY FORMATS ... 1-4 1.3.7 MISCELLANEOUS ... 1-5 2 INSTALLATION ... 2-1 2.1 INITIAL INSPECTION ... 2-1 2.2 POWER REQUIREMENTS ... 2-1 2.3 ENVIRONMENTAL CONSIDERATIONS ... 2-1 2.4 PRELIMINARY CHECK-OUT ... 2-1 2.5 SIGNAL CONNECTIONS ... . 2-3 2.5.2 OUTPUT, CONTROL AND BUS Interface SIGNALS ... 2-4 2.5.3 TRIGGER OUTPUTS ... 2-4 3 DESCRIPTION OF CONTROLS AND CONNECTORS ... 3-1 3.1 THE FRONT PANEL CONTROLS AND CONNECTORS . . . ... 3-1 3.2 THE KEYBOARD ... 3-1 3.2.1 COLOR CODE ... 3-2 3.2.2 FUNCTIONAL GROUPING . . . ... 3-3 3.3 THE REAR PANEL CONTROLS AND CONNECTORS . 3-6 4 MENU PROCESSING ... 4-1 4.1 INTRODUCTION ... 4-1 4.2 LABEL SPECIFICATION AND PROGRAMMING ... 4-1 4.2.1 "SPECIFY PARAMETER (INC/DEC) ENTER" 4-1 4.2.2 "SPECIFY FIELD ENTER" ... 4-2 '4.2.3 "SPECIFY DIGIT ENTER" ... 4-2 4.2.4 "SPEC FIELD,BASE,POL ENTER" ... 4-2 4.2.5 THE - SPECIFY - ENTER KEY ... 4-2 4.2.6 ERROR MESSAGES ... 4-2 4.3 THE TRACE MENU ... 4-3 4.3.1 CONFIGURATION AND SELECTION OF INPUTS AND RECORDING MEMORY ... 4-3 4.3.2 SPECIFICATION OF TRACE START ... 4-6 4.3.3 4-6 4.3.4 SELECTION OF INPUT CONDITIONS ... 4-6 4.3.5 SELECTION OF CLOCK AND CLOCK QUALIFIER PARAMETERS ... 4-7 4.4 THE TRIGGER MENU ... 4-8 4.4.1 THE PASS CONTROL ... 4-11 4.4.2 CODE BASE SELECTION ... 4-11 4.4.3 PRETRIGGER DATA AND THE DELAY Counter ... 4-11 4.4.4 WINDOW TRIGGERING ... 4-12 4.4.5 TRIGGER TRACING ... 4-13 4.5 THE COMPARE MENU ... 4-14 4.5.1 SEGMENT LENGTH ... 4-17 4.5.2 REFERENCE SEGMENT LOCATION ... 4-17 4.5.3 CHANNEL SELECTION ... 4-17 4.5.4 SKEW TOLERANCE ... 4-18 4.5.5 LABEL C ... 4-18 5 DISPLAY FORMATS AND MARKERS ... 5-1 5.1 THE TIMING DIAGRAM ... 5-1 5.1.1 TIME DISPLAYED ... 5-1 5.1.2 CHANNEL SELECTION AND RECONFIGURATION ... 5-2 5.1.3 THE TRIGGER MARKER ... 5-4 5.1.4 THE CURSOR ... 5-4 5.1.5 THE CURSOR "SET" MARKER ... 5-5 5.1.6 ADDRESS BASE SELECTION ... 5-5 5.2 THE LOGIC STATE LIST ... 5-5 5.2.1 LIST PROGRAMMING ... 5-5 5.2.2 THE TRIGGER MARKER ... 5-6 5.2.3 THE CURSOR ... 5-7 5.2.4 THE CURSOR "SET" MARKER ... 5-7 5.2.5 ADDRESS BASE SELECTION ... 5-7 6 SPECIAL APPLICATIONS ... 6-1 6.1 "GLITCH" CATCHING ... 6-1 6.2 GROUND "NOISE" MEASUREMENTS . .. ... 6-2 APPENDIX A LAM 4850 RS232 MACRO INSTRUCTIONS ... A-1

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