Hewlett-Packard 1726A User Manual

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HP’S NEW TIME INTERVAL MEASUREMENT SOLUTION

The HP 1726A Time [nterval Oscilloscope is a new time interval measuring instrument. Time interval counter (

and oscilloscope technologies have been synergistically combined in the 1726A to offer performance,

convenience, and value unmatched by alternative instrumentation. The contributions of the Time Interval

Oscilloscope benefit users with frequently encountered timing applications and/or precise timing measurement requirements.

The requirement for stringent timing measurements has resulted from advances in IC design, device characterization of custom integrated circuits (e.g., bipolar and MO5 processes), ECL circuits, and faster clock speeds in computers and other electronic systems. For example, characterizing a’process, verifying system operation, or troubleshooting a new design all require highly accurate and repeatable measurements. The feature set of the 1726A provides advanced performance with simple setup and the front panel conveniences expected from Hewlett-Packard products,

“THE COMPLETE TIME INTERVAL SOLUTION”

Completing the time interval

$olution i$ the I-IF’ 10326A Time

Interval Standard, a dual channel signal source. The 10326A’s waveform period accuracy (+/-5 picoseconds) and specified dualchannel timing relationships provide convenient signals with which to evaluate system performance and subsystem design. The 10326A is exceptionally easy to maintain,

and its calibration procedure is

completely traceable to the United States National Bureau of Standards and to the calibration facilities of other International Standards Organization

members.

FAST, CONFIDENT MEASUREMENTS

Combining a CRT with a marker

system makes the measured

interval easy to identify. Matched

wideband pre-amplifiers allow

pulse parameters such as

overshoot and ringing to be examined, and the overlap mode

permits precise measurements to be made from specific points on any displayed waveform. This measurement system eliminates

uncertainty concerning the exact

interval being measured, and it

obsoletes the technique of externally gating a time interval counter with an oscilloscope.

PRECISE MEASUREMENTS (+/-50 PICOSECONDS)

Time interval averaging, which is automatically controlled through

the Main Time/Div switch, allows the 1726A to make precise measurements on virtually any repetitive signal that can be displayed on an oscilloscope. A

crystal-referenced time base combines with sophisticated triggering circuits to form the

most accurate measurement system available today-up to 10

picosecond resolution and 50

picosecond

accuracy.

REPEATABILITY AND

CONVENIENCE

Complex time interval measurements are highly repeatable and easy to make with the 1726A’s triggered mode of

operation. The triggered mode

minimizes setup time, simplifies measurement procedures, and it

allows highly repeatable

measurements to be obtained

independent of the operator’s skill level. The fast mode, which reduces the,number of averages taken by a factor of ten, minimizes measurement time in all operating modes. In production and record-keeping

ap’plications, a standard HP-IB

interface outputs time interval information.

TWO INSTRUMENTS IN ONE

The feature set of the 1726A

Time Interval Oscilloscope

provides the performance of two

complete instruments. Not only

is the 1726A the most advanced time interval measurement solution, but with its time interval module turned off, the 1726A offers all the capabilities of a general purpose, 275 MHz oscilloscope.

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