Agilent Technologies Signal Analyzer N9030a - Manual (Page 579)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
FREQ Channel
Preset 0 Hz
State Saved Saved in instrument state.
Min –40.049995 MHz
Max 40.049995 MHz
Initial S/W Revision Prior to A.02.00
Start Freq
Sets the frequency at the left side of the graticule. While adjusting the start frequency, the stop
frequency is held constant, which means that both the center frequency and span will change.
Start Freq also sets the frequency entry mode to Start or Stop. In Start or Stop mode, the start
frequency and stop frequency values are displayed below the graticule, and the default active
function in the Frequency menu is Start Freq.
Key Path FREQ Channel
Remote Command [:SENSe]:FREQuency:STARt <freq>
[:SENSe]:FREQuency:STARt?
Example FREQ:STAR 200 MHz
FREQ:STAR?
Notes Max values depends on Hardware Options (5xx)
Dependencies By direct entry:
You cannot set Start frequency > Stop frequency. You cannot set Start frequency = Stop
frequency. You cannot select zero span by setting Start = Stop. You cannot set Start Frequency
to a value that would create a span of less than 10 Hz. If you try to do any of these, Stop
Frequency will change to maintain a minimum value of 10 Hz for the difference between Start
and Stop.
With the knob or step keys:
Cannot increment Start Freq to a value greater than Stop Freq – 10 Hz. If already in zero span,
cannot increment at all, and the first decrement will be forced to at least 10 Hz.
The Start Frequency can be limited by Span limits, if the Stop Frequency is below its preset
value.
If the electronic/soft attenuator is enabled, any attempt to set the Start Frequency such that the
Stop Frequency would be >3.6 GHz fails and results in an advisory message. If the equivalent
SCPI command is sent, this same message is generated as part of a “–221, Settings conflict”
warning.
If Source Mode is set to Tracking, and the Max or Min Start Freq is therefore limited by the limits
of the source, a warning message is generated, “Data out of range;clipped to source max/min” if
these limits are exceeded. Note that for an external source, these limits can be affected by the
Remote Language Compatibility Measurement Application Reference 579