Preface
Introduction
Congratulations on your choice of instrument.
It will serve you well for many years to come.
Your Timer/Counter/Analyzer is designed to
bring you a new dimension to bench-top and
system counting. It offers significantly in-
creased performance compared to traditional
Timer/Counters. The '90' offers the following
advantages:
–
12 digits of frequency resolution per sec-
ond and 100 ps resolution, as a result of
high-resolution interpolating reciprocal
counting.
–
A variety of HF prescaler options with up
-
per frequency limits ranging from 3 GHz
to 8 GHz.
–
Integrated high performance GPIB inter
-
face using SCPI commands.
–
A fast USB interface that replaces the tra
-
ditional but slower RS-232 serial interface.
–
Timestamping; the counter records exactly
when a measurement is made.
–
A high measurement rate of up to
250 k readings/s to internal memory.
Powerful and Versatile
Functions
A unique performance feature in your new in-
strument is the comprehensive arming possi-
bilities, which allow you to characterize virtu-
ally any type of complex signal concerning
frequency and time.
For instance, you can insert a delay between
the external arming condition and the actual
arming of the counter. Read more about Arm-
ing in Chapter 5, “Measurement Control”.
In addition to the traditional measurement
functions of a timer/counter, these instruments
have a multitude of other functions such as
phase, duty factor, rise/fall-time and peak
voltage. The counter can perform all
measurement functions on both main inputs
(A & B). Most measurement functions can be
armed, either via one of the main inputs or via
a separate arming channel (E).
By using the built-in mathematics and statis
-
tics functions, the instrument can process the
measurement results on your benchtop, with
-
out the need for a controller. Math functions
include inversion, scaling and offset. Statistics
functions include Max, Min and Mean as well
Preparation for Use
1-2 Preface
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