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.
If you need to formally cite an email in a reply, you can use the guidelines set by the American Psychological Association (APA). 1. Open the email you want to cite. 2. Create a new email message. 3. Copy any text you want to quote from the original email. 4. Paste the text into the new email message where you want it placed. 5. Type the following after the pasted text (omit the quotation marks): J. Doe (personal communication, September 15, 2011).. Replace the date with the date of the original email.