Agilent Technologies X Series Manual page 560

Sweep/Control
Notes
Preset
State Saved
Range
Readback text
Initial S/W Revision
More Information
Selecting
Uncompensated
Selecting Delay Until RBW Settled
amount equal to 3.06/RBW. This compensated delay causes the GATE START and GATE 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
Delay key does NOT change.
Delay Until RBW Settled
following any transient that affects the burst. Excellent measurements also require that the analysis
region not extend into the region affected by the falling edge of the burst. Thus, excellent measurements
can only be made over a width that declines with narrowing RBWs. Therefore, for general purpose
compensation, you will still want to change the gate length with changes in RBW even if the gate delay
is compensated.
Selecting
Compensate for RBW Group Delay
setting by an amount equal to 1.81/RBW. This compensated delay causes the GATE START, GATE
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
key does NOT change.
Gate Delay
compensation; the gate length itself is adjusted as necessary to attempt to compensate for delay effects
imposed by the RBW.
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Although this function is Meas Global, there are some measurements that do
not support this function. In those measurements the operation will be
Uncompensated. Going into one of those measurements will not change the
Meas Global selection; it will simply display the grayed-out menu key with
"Uncompensated" showing as the selection. This is a non-forceful grayout, so
the SCPI command is still accepted.
If Gate Delay Compensation is not supported at all within a particular mode,
the key is not displayed, and if the SCPI command is sent while in a
measurement within that mode, an "Undefined Header" message is generated.
Measurements that do not support this function include:
Swept SA
TD-SCDMA mode: Compensate for RBW Group Delay
All other modes: Delay Until RBW Settled
Saved in instrument state
Uncompensated|Delay Until RBW Settled|Compensate for RBW Group
Delay
Uncompensated|Settled|Group Delay
Prior to A.02.00
means that the actual gate delay is as you sets it.
causes the gate delay to be increased above the user setting by an
allows excellent measurements of gated signals, by allowing the IF to settle
causes the gate delay to be increased above the user
Compensate for RBW Group Delay
Gate
also includes gate length