tek_set_span (ul_scopes)

	status.i4.v = tek_set_span(dev_adrress.i4.v)

	Allows a setting to the TEK3052 span.

	dev_address		adrress of the instrument set up in gpib_select()

	This function returns ACNET status values as follows:

	CBS_OK			success
	CBS_INVARG		Invalid argument
	otherwise		return ACNET errors

	This function requires the following include files:
	ul_scopes_h:tekdefs_h

	Related functions:

	tek_get_mode, tek_get_waveform, tek_get_waveform_sing, tek_get_dir,
	tek_get_header, tek_set_mode,tek_set_span, tek_switch_mode, 
	tek_message