6 Input/Output
6.8 Trigger Output
For VXT model M9421A, Trig 2 Out is used as the Analyzer trigger output
Preset Unaffected by Preset, but preset to the following values by Restore Input/Output Defaults or Restore
System Defaults->All:
Trigger 1 Sweeping (HSWP)
Trigger 2 Gate
Trigger 3 Sweeping (HSWP)
Trigger 4 Gate
State Saved Saved in instrument state
Trigger Out Options
Source SCPI Notes
Off
OFF
Selects no signal to be output to the Trig n Out connector
Sweeping
HSWP
Selects the Sweeping Trigger signal to be output to the Trig n Out connector when a
measurement is made
This signal has historically been known as HSWP (High = Sweeping), and is 5V TTL
level with 50Ω output impedance
Measuring
MEASuring
Selects the Measuring trigger signal to be output to the Trig n Out connector. This
signal is true while the Measuring status bit is true
Main Trigger
MAIN
Selects the current instrument trigger signal to be output to the Trig n Out
connector
Note: For multi segment sweeps, only the first sweep segment uses the selected
trigger signal. All other sweep segments trigger using Free-Run and the trigger
output will reflect that
Gate Trigger
GTRigger
Selects the gate trigger signal to be output to the Trig n Out connector. This is the
source of the gate timing, not the actual gate signal
Gate
GATE
Selects the gate signal to be output to the Trig n Out connector. The gate signal has
been delayed and its length determined by delay and length settings. When the
polarity is positive, a high on the Trig n Out connector represents the time the gate is
configured to pass the signal
Odd/Even
Trace Point
OEVen
Selects either the odd or even trace points as the signal to be output to the Trig n
Out connector when performing swept spectrum analysis. When the polarity is
positive, this output goes high during the time the instrument is sweeping past the
first point (Point 0) and every other following trace point. The opposite is true if the
polarity is negative
Trigger Armed
TARMed
Selects the “trigger armed” trigger signal to be output to the Trig n Out connector.
This signal is true when the instrument reaches its trigger armed state
Not available in modular instruments
Source Point
Trigger
SPOint
Selects the gate signal to be output to the Trig n Out connector for use as the Point
Trigger when operating an external source in Tracking mode. When Ext Trigger 1 is
Short Range Comms & IoT Mode User's &Programmer's Reference 2170