// Sets the scan input source of opened eSCL device.
function setEsclScanInputSource(esclDevice) {
    try {
        console.log("eSCL device: " + esclDevice.get_DeviceName());
        // if eSCL device is not opened
        if (!esclDevice.get_IsOpened()) {
            console.log("Device is not opened. Please open device.");
            return;
        }
        // set the ADF without duplex as the scan input source for eSCL device
        esclDevice.set_EsclScanInputSource("FeederWithoutDuplex");
        console.log("Scan input source: " + esclDevice.get_EsclScanInputSource());
    }
    catch (ex) {
        alert(ex);
    }
}