Advantech ADAM-5511 Manual page 63

The ADAM-5017 is a 16-bit, 8-channel analog differential input module
that provides programmable input ranges on all channels. It accepts
millivolt inputs (±150mV, ±500mV), voltage inputs (±1V, ±5V and ±10V)
and current input (±20 mA, requires 125 ohms resistor). The module
provides data to the host computer in engineering units (mV, V or mA).
This module is an extremely cost-effective solution for industrial
measurement and monitoring applications. Its opto-isolated inputs
provide 3,000 V of isolation between the analog input and the
DC
module, protecting the module and peripherals from damage due to
high input line voltage. Additionally, the module uses analog multi-
plexers with active overvoltage protection. The active protection
circuitry assures that signal fidelity is maintained even under fault
conditions that would destroy other multiplexers. This module can
withstand an input voltage surge of 70 Vp-p with ±15 V supplies.