Editing Crystal oscillator (section)

==Circuit notations and abbreviations==
On electrical schematic diagrams, ''crystals'' are designated with the class letter ''Y'' (Y1, Y2, etc.). Oscillators, whether they are crystal oscillators or others, are designated with the class letter ''G'' (G1, G2, etc.).<ref>[[Institute of Electrical and Electronics Engineers|IEEE]] Std 315-1975</ref><ref>[[American National Standards Institute|ANSI]] Y32.2-1975</ref> Crystals may also be designated on a schematic with ''X'' or ''XTAL'' (a phonetic abbreviation, comparable to using ''[[Xmas]]'' for ''Christmas''), or a crystal oscillator with '''''XO'''''.

Crystal oscillator types and their abbreviations:
*'''ATCXO''' — [[Analog temperature controlled crystal oscillator]]
*'''CDXO''' — Calibrated dual crystal oscillator
*'''DTCXO''' — Digital temperature compensated crystal oscillator
*'''EMXO''' — Evacuated miniature crystal oscillator
*'''GPSDO''' — [[GPSDO|Global positioning system disciplined oscillator]]
*'''MCXO''' — [[Microcomputer]]-compensated crystal oscillator
*'''OCVCXO''' — [[Crystal oven|oven-controlled]] voltage-controlled crystal oscillator
*'''OCXO''' — [[Crystal oven|Oven-controlled crystal oscillator]]
*'''RbXO''' — [[Rubidium]] crystal oscillators (RbXO), a crystal oscillator (can be an MCXO) synchronized with a built-in [[rubidium standard]] which is run only occasionally to save power
*'''TCVCXO''' — Temperature-compensated [[voltage-controlled oscillator|voltage-controlled crystal oscillator]]
*'''TCXO''' — Temperature-compensated crystal oscillator
*'''TMXO''' – Tactical miniature crystal oscillator<ref name="ieee-uffc2"/>
*'''TSXO''' — Temperature-sensing crystal oscillator, an adaptation of the TCXO
*'''VCTCXO''' — Voltage-controlled temperature-compensated crystal oscillator
*'''VCXO''' — Voltage-controlled crystal oscillator