1005
Marker
used in the command. A 1 is returned to the state query only if marker count is on and the specified
number is the selected marker. The invalid data indicator (*) will turn on until the completion of the first
count but this does not keep a value from being returned.
Gate Time Auto/Man
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.
Couple Markers
When this function is true, moving any marker causes an equal X-axis movement of every other marker
which is not Fixed or Off. By “equal X-axis movement” we mean that we preserve the difference
between each marker’s X-axis value (in the fundamental x-axis units of the trace that marker is on) and
the X-axis value of the marker being moved (in the same fundamental x-axis units).
Key Path Marker Function, Marker Count
Remote Command :CALCulate:MARKer[1]|2|3|4|5|6|7|8|9|10|11|12:FCOunt:GA
Tetime <time>
:CALCulate:MARKer[1]|2|3|4|5|6|7|8|9|10|11|12:FCOunt:GA
Tetime?
:CALCulate:MARKer[1]|2|3|4|5|6|7|8|9|10|11|12:FCOunt:GA
Tetime:AUTO OFF|ON|0|1
:CALCulate:MARKer[1]|2|3|4|5|6|7|8|9|10|11|12:FCOunt:GA
Tetime: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