Logic Analyzer Card
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VPL-PPLA-8~48 Logic Analyzer is a measuring tooling capable of simultaneous display of the logic states (0 or 1) or multichannels and indispensable for manufacture, development and troubleshooting of digital circuits and their applied systems. In the past, the only method of observing digital signals was with an oscilloscope (for analog signals). But the major impact of the technology has been with microcomputer, digital signal processors,communications, and data transmission, and extended even the fields of anlog. Unlike conventional logic analyzer it is very user friendly and super low cost. It can be attached to any IBM or compatible computer.
A logic analyzer has become the essential tool for both hardware and software engineers. It enables the activity of many digital signal points to be recorded and then examined in detail either as a timing diagram or a state display expressed in BINARY,ASCII, HEX etc.
The VPL-PPLA-8~48 has 8/16/32/48 data sampling channels, with built-in software selectable sampling clock and triggering circuits. The equipment samples the TTL logic states at the data channel inputs, and displays these states on the Computer
screen. These states could be saved on diskettes for future references.
To make it a more flexible device, an external clock input and an external trigger input are also provided. Further more, there are outlets for the internal sampling clock signal and the internal
trigger signal. Operation is very simple. Simply connect the data channels to the test points and select the clock rate and triggering point, then all the logic states of the test points will be displayed on the computer/screen in graphic format.
Installation could be done within a few minutes. All connectors, hardware and operating software are included in the user package.
FEATURES
50 Mega Samples per channel per second max.
8/16/32/48 TTL test channels
Built in Versatile triggering with pre-triggering view
Attach to the Printer port of any IBM compatible PC/AT computer.
Many power commands to help user manipulate the graphic display
Test data (state table) can be saved in *.dat format.
Facility to save sampled data configuration.
Windows 9X/XP/NT/ME/2000 compatible interface software
User's Manual
SPECIFICATIONS
No. of Channels : 8/16/32/48
Frequency : 50 MHz.
Input Impedance : 1 M Ohm. input capacitor: <5P
Input Voltage : +25V transient +10V continuous
Threshold Voltage : TTL (1.4V).
Setup Time : 4 µsec in internl mode 0 µsec in external mode
Hold Time : 0 µsec in internal mode 8 µsec in external mode
Trigger Format : "0", "1". "Xs".
Trigger Setup Time : More than 20 µsec.
Trigger Position : 128 to 1920 data before trigger and 1920 to 128 data after trigger in 100 MHz mode. 64 to 960 data before trigger and 960 to 64 data after trigger in other frequency.
Memory Capacity : 1k data/every channel.
Display State : ASCII, Binary, Decimal, Hexadecimal in one screen at one time.
Display Timing : 24 Channel waveform in one screen. The display indicates the time between the cursor 1 and cursor 2.
Repeat: Automatically starts a new data acquisition one second after the completion of the previous one.
Repeater on Trigger : Automtically starts a new data
acquisition cycle after the completion of last cycle and upon detection of trigger word.
Files : Save and Load data, Delete and Rename catalog files.
Printer : Print all data on screen to printer.
DISASSEMBLY MODULES
Disassembly used to disassemble the instructions and machine code of corresponding processors used for Logic Analyzer Card. Disassembly modules are available for:
8051 (8031) l Intel 8085
Intel 8088 l Rockwell 6502
Motorola 68000 l Zilog Z-80
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