Agilent Technologies Signal Analyzer N9030a User Manual
Page 726
6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Marker
Gate Time
Controls the length of time during which the frequency counter measures the signal frequency.
Longer gate times allow for greater averaging of signals whose frequency is “noisy”, though the
measurement takes longer. If the gate time is an integer multiple of the length of a power-line cycle
(20 ms for 50 Hz power, 16.67 ms for 60 Hz power), the counter rejects incidental modulation at
the power line rate. The shortest gate time that rejects both 50 and 60 Hz modulation is 100 ms,
which is the value chosen in Auto, or on Preset or when Auto Couple is pressed.
The start time of the Gate Time of the counter must be controlled by the same trigger parameters
as controls the sweep. Thus, if the Trigger is not in Free Run, the counter gate must not start until
after the trigger is received and delayed.
Key Path
Marker Function, Marker Count
Remote Command
:CALCulate:MARKer[1]|2|...12:FCOunt:GATetime
:CALCulate:MARKer[1]|2|...12:FCOunt:GATetime?
:CALCulate:MARKer[1]|2|...12:FCOunt:GATetime:AUTO OFF|ON|0|1
:CALCulate:MARKer[1]|2|...12:FCOunt:GATetime:AUTO?
Example
:CALC:MARK2:FCO:GAT 1e–2 sets the gate time for Marker 2 to 10^(–2) s = 10 ms.
Notes
When Auto Couple is pressed, Gate Time is set to 100 ms.
Notes
This command causes the specified marker to become selected.
Preset
100 ms
ON
State Saved
Saved in instrument state.
Min
1 us
Max
500 ms
Initial S/W Revision
Prior to A.02.00
Remote Command
:CALCulate:MARKer[1]|2|...4:FCOunt:RESolution
:CALCulate:MARKer[1]|2|...4:FCOunt:RESolution?
:CALCulate:MARKer[1]|2|...4:FCOunt:RESolution:AUTO ON | OFF | 1 | 0
:CALCulate:MARKer[1]|2|...4:FCOunt:RESolution:AUTO?
Notes
This command is provided for ESA compatibility, which allowed the user to control the gate
resolution, rather than the gate time.
:CALCulate:MARKer[1]|2|3|4:FCOunt:RESolution
Sets the gate
time to 1/freq
:CALCulate:MARKer[1]|2|3|4:FCOunt:RESolution?
Returns 1/gate_time
726
Remote Language Compatibility Measurement Application Reference