User manual

PicoScope 4000 Series User's Guide12

USB 1.1. Universal Serial Bus (Full Speed). This is a standard port used to connect

external devices to PCs. A typical USB 1.1 port supports a data transfer rate of 12

megabits per second, so is much faster than an RS232 COM port.

USB 2.0. Universal Serial Bus (High Speed). This is a standard port used to connect

external devices to PCs. A typical USB 2.0 port supports a data transfer rate 40 times

faster than USB 1.1 when used with a USB 2.0 device, but can also be used with USB

1.1 devices.

Vertical resolution. A value, in bits, indicating the precision with which the

oscilloscope converts input voltages to digital values. Oversampling (see above)

can improve the effective vertical resolution.

Voltage range. The range of input voltages that the oscilloscope can measure. For

example, a voltage range of ±100 mV means that the oscilloscope can measure

voltages between -100 mV and +100 mV. Input voltages outside this range will not

damage the instrument as long as they remain within the protection limits stated in

the Specifications table.