Digital Combinatorial Triggering

Triggering begins the Analyzer's data input and display processes. The trigger point is the reference point to which all following events are related. The Analyzer's controls provide for triggering on either single events or multiple events occurring simultaneously. This capability is necessary in digital applications because digital systems commonly function in response to parallel data patterns occurring simultaneously on several circuit nodes. A device, for example, might be designed to...

Spike Detection

Logic Clip 10528a

Selection of the SPIKE A mode makes possible the detection of asynchronous events occurring between clock pulses. A spike is detected whenever more than one logic transition occurs within a single clock period. If the positive-going transition occurs first, the spike is defined as positive and is displayed on the A channel conversely, negative spikes are displayed on the B channel. The spike detector consists of two flip-flops Fig. 12 . One is sensitive to the positive-going edge of the data...

Mechanical Design

The 5000A Logic Analyzer is the first instrument to be packaged in the new HP cabinet system. This system features die-cast front and rear frames and removable aluminum side rails that connect the front and rear frames. With top, bottom, and both side covers removed, access to all sides of the instrument is possible Fig. 13 . The covers slide into slots on the frame each is quickly removed by loosening only a single screw. The internal design of the Logic Analyzer emphasizes ease of assembly...