Figure 2-31 Tracking-Generator Output Power Activated - Agilent Technologies 8560E User Manual

Making Measurements
Example 7: Stimulus-Response Measurements
Set the spectrum analyzer
2. To activate the tracking generator menu, press
TRACKING GENRATOR
displayed in the active function block. Because the filter (DUT) is not
particularly sensitive, an output power of −10 dBm should not
damage it.
3. Activate the tracking-generator power level by pressing
OFF
If ERR 901 TGFrqLmt appears in the error message area, set the
start frequency to 300 kHz. (Stimulus-response measurements using
an 8560E/EC Option 002 are specified from 300 kHz to 2.9 Ghz.) Due
to the current resolution of the annotation, changing the start
frequency to 300 kHz will be denoted only in smaller spans.
4. Put the sweep time of the analyzer into stimulus-response
auto-coupled mode by pressing
until SR is selected. In stimulus-response mode, the auto-coupled
sweep times usually are much faster for swept-response
measurements (see Figure 2-31).
Figure 2-31 Tracking-Generator Output Power Activated
5. Because we are interested only in bandpass-filter rejection, tune the
center frequency so the filter roll off takes up most of the trace on the
display (see Figure 2-32).
86
. The tracking-generator output power is
until ON is selected.
AUX CTRL
, then
MORE 1 OF 3 SWP CPL SR SA
,
SRC PWR ON
Chapter 2