Voltage Ranges and Limits
The instrument has two voltage ranges: 135 V (low) and 270 V (high). It can also autorange between the two ranges
in AC or DC mode. The instrument will not switch voltage ranges (135 V, 270 V, or AUTO), with the output on. If you
attempt to do so, the output shuts off. Also, if you switch the range to 135 V when the voltage is set above 137.5 V
the instrument sets the output voltage to 0 V.
Autoranging automatically switches to the 135 V or 270 V range according to the specified voltage. As it does so, if
the output is on, the instrument turns the output off for approximately 0.5 seconds and turns it on again after the
range switches.
The tables below indicate the output voltage setting ranges and maximum output current.
Voltage range Output Voltage Setting
AC Mode
DC Mode or AC+DC Mode
135 V
0.0 to 137.5 V -194.5 to +194.5 V
270 V
0.0 to 275.0 V -389.0 to +389.0 V
Voltage range Maximum Output Current
AC Mode DC Mode or AC+DC Mode
AC6801A
135 V
5 A
4 A
270 V
2.5 A
2 A
AC6802A
135 V
10 A
8 A
270 V
5 A
4 A
AC6803A
135 V
20 A
16 A
270 V
10 A
8 A
AC6804A
135 V
40 A
32 A
270 V
20 A
16 A
Keysight AC6800 Series Operating and Service Guide
55
