222
Chapter 4 Remote Interface Reference
Frequency Sweep Commands
4
MARKer:FREQuency {<frequency>|MINimum|MAXimum}
MARKer:FREQuency? [MINimum|MAXimum]
Set the marker frequency. This is the frequency at which the signal
on the front-panel Sync connector goes to a logic low during the sweep.
The Sync signal always goes from low to high at the beginning of the
sweep. Select from 1 µHz to 20 MHz (limited to 200 kHz for ramps and
6 MHz for arbitrary waveforms). The default is 500 Hz. MIN = the start
or stop frequency (whichever is lower). MAX = the start frequency or stop
frequency (whichever is higher). The :FREQ? query returns the marker
frequency in hertz.
• When sweep is enabled, the marker frequency must be between the
specified start frequency and stop frequency. If you attempt to set the
marker frequency to a frequency not in this range, the function
generator will automatically
set the marker frequency equal to the
start frequency or stop frequency
(whichever is closer). From the
remote interface, a “Settings conflict” error will be generated and
the marker frequency will be adjusted as described.
MARKer {OFF|ON}
MARKer?
Disable or enable the frequency marker. When the frequency marker
is disabled, the signal output from the Sync connector is the normal
Sync signal for the carrier waveform (see “Sync Output Signal” on
page 68). The default is OFF. The MARK? query returns “0” (OFF) or
“1” (ON)
.
•The OUTP:SYNC command is overridden by the setting of the MARK
command. Therefore, when the marker frequency is enabled (and the
sweep mode is also enabled), the OUTP:SYNC command is ignored
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