# :FUNCtion:YUNits?

:FUNCtion Scaling Commands

- :FUNCtion:VERTical:SCALing
- :FUNCtion:XLEFt?
- :FUNCtion:XPOSition
- :FUNCtion:XREFerence?
- :FUNCtion:XRIGht?
- :FUNCtion:XSCale
- :FUNCtion:XSCale:FINE
- :FUNCtion:XUNits?
- :FUNCtion:YBOTtom?
- :FUNCtion:YOFFset
- :FUNCtion:YRANge
- :FUNCtion:YSCale
- :FUNCtion:YSCale:FINE
- :FUNCtion:YTOP?
- :FUNCtion:YUNits?

## Query Syntax

    :FUNCtionN:YUNits?

Where N identifies one of sixty four {1:64} math functions that you can create. For example, `:FUNCtion2`.

## Description

Queries the amplitude units for a function's waveform.

## Returned Values

Base units or combined units can be returned depending on the function operation.

Base Units
Base Unit | In SCPI Return Value
--- | ---
Volt | VOLT or V or VOL if combined
Amp | AMP or A if combined
Watt | WATT or W if combined
unknown | UNKN or U if combined

Composed Units
Composed Unit | In SCPI Return Value
--- | ---
Coulomb (Amp * Second) | COUL or C if combined
Henry (Ohm * Second) | HENR or H if combined
Farad (Coulomb / Volt) | FAR or F if combined
Ohm (Volt / Amp) | OHM or O if combined
Watt (Volt * Amp) | WATT or W if combined
Joule (Watt * Second) | JOUL or J if combined

Combination Operators
Operators | In SCPI Return Value
--- | ---
Inverse | I
Squared (or like units Multiplied) | SQ
Square Root | R
Differentiate | <Y_unit>P<X_unit> (rate, per <X_unit>)
Integrate | <Y_unit><X_unit> (Y·X units)
FFT | DB<Y_unit>

Combined units are shortened to three or four characters according to SCPI conventions. So, for example:

- The multiplied or squared Volt units are returned as "VSQ"
- Volt units multiplied by Amp units are returned as "WATT"
- The square root of Volt units are returned as "RVOL"
- The square root of "Volt2*second" units are returned as "VRS"
- The differential of Volt Y units and Second X units are returned as "VPS"
- The differential of Amp Y units and Volt X units are returned as "IOHM"
- The integral of Volt Y units and Second X units are returned as "VSEC"
- The integral of Amp Y units and Watt X units are returned as "AWAT"
- The integral of Amp Y units and Second X units are returned as "COUL" (for Coulomb, not "ASEC")
- The square of Coulomb units are returned as "CSQ"
- The integral of Coulomb2 Y units and Second X units are returned as "CSS" (Coulomb squared seconds)
- The FFT of Volt Y units are returned as "DBV"