Agilent Technologies E7402A, E7405A, E7404A Tracking Generator Output Power Activated in Log Sweep

Making Complex Measurements

Making Stimulus Response Measurements

Figure 2-9 Tracking Generator Output Power Activated in Log Sweep

10.Put the sweep time of the analyzer into stimulus response auto coupled mode by pressing Sweep, then Swp Coupling (SR). See Figure 2-9. Auto coupled sweep times are usually much faster for stimulus response measurements than they are for spectrum analyzer (SA) measurements. Adjust the reference level if necessary to place the signal on screen.

11.To make a transmission measurement accurately, the frequency

	response of the test system must be known. Normalization is used to
	eliminate this error from the measurement. To measure the
	frequency response of the test system, connect the cable (but not the
	DUT) from the tracking generator output to the analyzer input.
	Press Trace/View, More, Normalize, Store Ref (1→ 3), Normalize (On).
	This will activate the trace 1 minus trace 3 function and display the
	results in trace 1. The normalized trace or flat line represents 0 dB
	return loss. Normalization occurs each sweep.
	Since the calibration trace is stored in trace 3, changing trace 3 to
NOTE
	Clear Write, Max Hold, or Min Hold will invalidate the normalization.
	12.Reconnect the DUT to the analyzer. Note that the units of the
	reference level have changed to dB, indicating that this is now a
	relative measurement. Refer to Figure 2-10.
	13.Press Trace/View, More, Normalize, Norm Ref Posn to change the
	normalized reference position. Arrowheads at the left and right
	edges of the graticule mark the normalized reference position. Using
	the knob results in a change in the position of the normalized trace,
	within the range of the graticule. Refer to Figure 2-10.

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