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Making Measurements Using Spectrum Analyzer Mode
Using the Time-Gated Spectrum Analyzer Capability Without the Gate Utility (Option 107 only)
4. To check the gate control function, press
Cm],
Gate Control ,
GATE CTL EDGE LVL so that LVL (level) is underlined. (See Figure 5-31.)
dB/
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IEDGE
POL
SPAN
0
HZ
RES
BW
3 0 MHZ “BW
1
MHZ
#SWP
200
msec
Figure 5-31. Using the level Gate Control
When the GATE CTL EDGE LVL softkey function is set to edge, triggering
occurs at the edge of the trigger input. When the GATE CTL EDGE LVL
softkey function is set to level, the gate is on whenever the trigger input is
high. Because the trigger input for this example is the HI SWEEP IN/OUT
signal, and HI SWEEP IN/OUT signal is high (+ 5 V) during every sweep,
the level of the signal on screen is high.
Notice that the GATE DELAY , GATE TIME, and EDGE POL MEG POS
softkeys are blanked when the gate control is set to level. When the gate
control is set to level (LVL), the functions of gate delay, gate length, and
edge trigger polarity no longer apply.
5-58