It's just a signal generator, an AC voltmeter, and a phase meter, gussied up with attenuators and digital displays. They're usually VERY expensive as you want the network analyzer to be perfectly flat in amplitude and phase, which takes a lit of very precise analog electronics and tuning to do.
Two, you should always insert quotation marks at the beginning and at the end of your quote to indicate that the sentence in your paragraph is borrowed from another source. 1  Examples: 2  You may also want to read how to quote in an essay, or how to quote in APA, or how to quote in MLA.
Use a single quotation mark to begin it and punctuate it as you would a regular quote, with the period coming before you close the quotation with a second single quotation mark. Normally, a quote within a quote like this will be brief, since people usually use only short direct quotes from another person.