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Sweep/Control
STOP lines on the display to move by the compensation amount, and the actual hardware gate delay to
be increased by the same amount. All the other gate lines (for example, MIN FAST) are unaffected. If
the RBW subsequently changes, the compensation is readjusted for the new RBW. The value shown on
the
Gate Delay key does NOT change. Compensate for RBW Group Delay also includes gate length
compensation; the gate length itself is adjusted as necessary to attempt to compensate for delay effects
imposed by the RBW.
Compensate for RBW Group Delay is similar to Delay Until RBW Settled , but compensates for the
group delay of the RBW filter, rather than the filter settling time. As the RBW gets narrow, this can
allow the settling tail of the RBW to affect the beginning part of the gated measurement, and allow the
beginning of the RBW settling transient to affect the end of the gated measurement. These two effects
are symmetric because the RBW response is symmetric. Because the gate length is not automatically
compensated, some users might find this compensation to be more intuitive than compensation for RBW
settling.
Min Fast Position Query (Remote Command Only)
This command queries the position of the MIN FAST line, relative to the delay reference (REF) line. See
section “Gate View On/Off” on page 1282. If this query is sent while not in gate view, the MinFast
calculation is performed based on the current values of the appropriate parameters and the result is
returned. Knowing this value lets you set an optimal gate delay value for the current measurement setup.
Gate Preset (Remote Command Only)
Presets the time-gated spectrum analysis capability.
This command sets gate parameter values to the ESA preset values, as follows:
Gate trigger type = edge
Gate polarity = positive
Gate delay = 1 us
Gate length = 1 us
Gate Level (Remote Command Only)
Sets the gate input transition point level for the external TRIGGER inputs on the front and rear panel.
This is a legacy command for PSA compatibility. It is simply an alias to the equivalent trigger level
Remote Command: [:SENSe]:SWEep:EGATe:MINFast?
Example: SWE:EGAT:MIN?
Initial S/W Revision: Prior to A.02.00
Remote Command: [:SENSe]:SWEep:TIME:GATE:PRESet ESA Compatibility
Initial S/W Revision: Prior to A.02.00