AMETEK XBT Series - Manual (Page 32)

Operation
3-12 M370187-01 Rev J
(21) CH1 ±S / CH2 ± S:
Connect the +Sense to the positive pole of the device under test (DUT) and
the –Sense to the negative pole of the DUT. When the DIP switches are
set to Remote sense, the power supply has voltage compensation, and
measures and controls voltage at the DUT.
(22) RS232 Interface
(23) USB Interface
(24) 115V/230V AC input power select switch (on the bottom of the power supply
toward the front panel).
(25) Cooling Fan:
Variable speed adjusts with the load current.
(26) Optional Interface:
There are GPIB, LAN, I/O port.
.