Agilent Technologies Signal Analyzer N9030a - Manual (Page 1200)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Sweep/Control
changes, even if the window is not being updated. In Gated LO and Gated Video, these lines are
positioned relative to the delay reference line (not relative to 0 time). In Gated FFT, their
location is relative to the left edge of the screen.
•
A blue line is displayed showing the delay reference, that is, the reference point for the Gate
Delay within the Zero Span window. The blue line represents where (in time) the effective
location of the gate start would be if the gate were programmed to zero delay.
•
The second blue line is labeled "MIN FAST" as shown in the figure above because it represents
the minimum Gate Delay for fast Gated LO operation. This line is only displayed in Gated LO.
You cannot scroll (knob) or decrement (down key) the Gate Delay to less than that represented
by the position of this line, it can only be set below this position manually, although once there
it can be moved freely with the knob while below the line.
•
A yellow line in the Gated Video case only, is displayed at Blength, where Blength is the
display point (bucket) length for the swept trace, which is given by the sweep time for that
trace divided by number of Points – 1. So it is referenced to 0 time, not to the delay reference.
This line is labeled NEXT PT (it is not shown in the figure above because the figure above is for
Gated LO). The yellow line represents the edge of a display point (bucket). Normally in Gated
Video, the bucket length must be selected so that it exceeds the off time of the burst. There is
another way to use the analyzer in Gated Video measurements, and that is to set the bucket
width much shorter than the off time of the burst. Then use the Max Hold trace function to fill
in "missing" buckets more slowly. This allows you to see some of the patterns of the Gated
Video results earlier, though seeing a completely filled-in spectrum later.
Gate View Setup
Accesses a menu that enables you to setup parameters relevant to the Gate View
Key Path Sweep/Control, Gate
Scope Meas Global
Initial S/W Revision A.10.00
Gate View Sweep Time
Controls the sweep time in the Gate View window. To provide an optimal view of the gate signal,
the analyzer initializes Gate View Sweep Time based on the current settings of Gate Delay and
Gate Length.
Key Path Sweep/Control, Gate, Gate View Setup
Remote Command [:SENSe]:SWEep:EGATe:TIME
1200 Remote Language Compatibility Measurement Application Reference