What is a decimator?

Answer 1

A decimal is a little dot that separates whole numbers from un-whole numbers. For example: 48.967 The number to the left of a decimal is a whole number and the number to the right of the decimal is an un-whole number, ie. a fraction.
Decimals are the numbers that live in between whole numbers. Example: 1.5, which mean one and a half.
relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten:

Answer 2

Decimator is a low-cost spectrum analyzer card providing accurate, fast measurements in a very small form factor. It is ideally suited to measurement of communications and broadcast carriers, as well as integration into an RF System, Satcom terminal or RF monitoring/measurement system.

Answer 3

a decimate is a latin word which means removal of tenth.