The SCPI standard allows specification of the numeric values with multiplier prefix to the measurement units.
| Prefix | Multiplier | 
|---|---|
| A | 1e-18 | 
| F | 1e-15 | 
| P | 1e-12 | 
| N | 1e-9 | 
| U | 1e-6 | 
| M | 1e-3 | 
| K | 1e3 | 
| MA | 1e6 | 
| G | 1e9 | 
| T | 1e12 | 
| PE | 1e15 | 
| EX | 1e18 | 
There are two exceptions to the above designation: prefix M in combination with HZ or OHM means 1e6 (Mega), and not 1e–3 (milli), i.e. MHZ means Megahertz, same as MAHZ.