Using The Level Gate Control - HP 8590 E-Series User Manual

4. To check the gate control function, press Cm], Gate Control, GATE CTL EDGE LVL so
that LVL (level) is underlined (see Figure 4-33).
REF .0 dBm
SC FC
CORR
CENTER 0 Hz
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 NEG 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.
GATE OiLAY
60.000
:
. . . . . . . ..~......~~~~~~~.......~~~~~~~.~.~...................~...,,,,,,,,,....,.,,,,,,,,,.,..,..,,,,
RES BW 3.0 MHz
Figure 4-33. Using the Level Gate Control
EDGE !&
MENU
SPAN 0 Hz