8 Trigger
8.1 Trigger
Remote Command
:TRIGger[:SEQuence]:AIQMag:BANDwidth <freq>
:TRIGger[:SEQuence]:AIQMag:BANDwidth?
Example
:TRIG:AIQM:BAND 8 MHz
Notes The combined sample rate for the main and auxiliary receivers cannot exceed 100 MSa/sec. The
bandwidth available to Trigger BW is limited to what is available after the main receiver's bandwidth
(Info BW, sometimes pre-FFT BW) is set. Because of this limitation, the Max is not always achievable
The combination of "Trigger Center Frequency" on page 2676 and Trigger BW is also limited:
–
Trigger CF + 1/2 Trigger BW < Max
–
Trigger CF - 1/2 Trigger BW > Min
Dependencies Only appears when Aux Channel I/Q Mag is selected as the Trigger Source
Preset Bandwidth option dependent:
–
No Opt: 10 MHz
–
Opt B25: 25 MHz
–
Opt S40: 40 MHz
State Saved Saved in instrument state
Range 10 Hz to Maximum
Min 10 Hz
Max Bandwidth option & I/Q input path-dependent:
–
No Opt, I or Q Only: 10 MHz, I+jQ: 20 MHz
–
Opt B25, I or Q Only: 25 MHz, I+jQ: 50 MHz
–
Opt S40, I or Q Only: 40 MHz, I+jQ: 80 MHz
8.1.18 X Axis Relative to Trigger
For triggers that support Trigger Delay, it is beneficial that in time-domain displays
(like Zero Span), X-axis values should be referenced to the Trigger point, that is, the
zero value on the X Axis should be wherever the trigger point appears on the X Axis
(including to the left or right of the X Axis). For negative trigger delays this means
the zero point can actually appear on the X Axis.
Traditionally the zero point is at the left edge of the X Axis, and this behavior is
retained for backwards compatibility, but if you turn on X Axis Relative to Trigger,
the zero point moves to the trigger point and all X Axis values change to be relative
to the trigger point.
When the X Axis Relative to Trigger switch is On, the trigger point on the X-axis will
be marked with a vertical line and an annotation of “TRIG”. Additionally, when the
2677 Spectrum Analyzer Mode User's &Programmer's Reference
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