Sets or returns the ACW HI SET current value in 
milliamps. The test must first be in ACW mode 
before this command can be used.  
Note: An “Err” message will be shown on display 
if the Ramp Time + Test Time is > 240 seconds 
when the HI SET limit + REF is ≥ 30mA for GPT-
12XXX or HI SET limit + REF is ≥ 80mA for GPT-
15XXX. This applies to the ACW function only. An 
“TIME OVER 240s” message will be returned after 
using the query command “SYSTem:ERRor ?” in 
remote control.