Setting a "timeout" for the addressed spectrometer is useful when used
together with triggers to avoid endless waiting. This function is supported
only by USB spectrometers. A time of 0L disables the timeout.
     
    
    Usage
    set_USB_timeout(jwrapper, time.millisec = 1000L, sr.index = 0L)
 
    
    Arguments
- jwrapper
- an open Wrapper object from Omnidriver 
- time.millisec
- time to wait in milliseconds (an integer) 
- sr.index
- an index to address the spectrometer 
 
    
    
    Note
    This method is applied to all channels.