B&K Precision 4040B - Manual - Manual (Page 49)

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4.1.2 USB (Virtual COM) Settings
The USB (virtual COM) interface settings for the
communication port are as follows:
BAUDRATE: 115200
PARITY: NONE
DATA BITS: 8
STOP BIT: 1
FLOW CONTROL: NONE
4.2 Device States
The device may be in one of the two possible states
described below.
4.2.1 Local State (LOCS)
In the LOCS state, the device may be operated from the
front panel.
4.2.2 Remote State (REMS)
In the REMS state, the device may be operated from the
USB interface. Actuating any front panel key will cause the
device state to revert to the LOCS.