8 Trigger
8.1 Trigger
Source Example Min Max Preset Resoluti
on
Step
Key Incr
Knob
Incr
1dB
(Lin)
never <
0.1dB
I
(Demo
d)
TRIG:IDEM:
LEV 0.5 V
-1 V 1 V 0.25 V 4
significan
t digits
Scale/D
iv
Step/10
0, but
never <
1 µV
Q
(Demo
d)
TRIG:QDEM:
LEV 0.5 V
-1 V 1 V 0.25 V 4
significan
t digits
Scale/D
iv
Step/10
0, but
never <
1 µV
Input I
TRIG:IINP:
LEV 0.5 V
-1 V 1 V 0.25 V 4
significan
t digits
Scale/D
iv
Step/10
0, but
never <
1 µV
Input Q
TRIG:QINP:
LEV 0.5 V
-1 V 1 V 0.25 V 4
significan
t digits
Scale/D
iv
Step/10
0, but
never <
1 µV
Aux
Chan
I/Q
Mag
TRIG:AIQM:
LEV -30
dBm
-200 dBm 100 dBm -25
dBm
.1 dB Scale/D
iv (Log),
1dB
(Lin)
Step/10,
but
never <
0.1dB
Internal
TRIG:INT:L
EV 1.2 V
-5 V
VXT models
M9410A/11A/15A
/16A: 0 V
5 V
VXT models
M9410A/11A/15A
/16A: 2.5 V
1.2 V 10 mV .5 V .1 V
ADC
TRIG:ADC:L
EV -30 dBm
-170 dBm 30 dBm -25
dBm
.01 dB Scale/D
iv (Log),
1dB
(Lin)
Step/10,
but
never <
0.1dB
More Information
For Video Trigger Level, when sweep type = FFT, the video trigger uses the
amplitude envelope in a bandwidth wider than the FFT width as a trigger source.
This can be useful but does not have the same relationship between the displayed
trace and the trigger level as in swept triggering.
For Video Trigger Level the settable resolution of the function is 0.01dB, even when
the Y Axis Unit is linear. In Linear Y Axis Unit (for example, Volts) this requires 4
significant digits to display on the control.
Spectrum Analyzer Mode User's &Programmer's Reference 2662