User`s guide

5-16 Agilent E6432A Microwave Synthesizer User’s Guide
Applications and Example Programs
Trig In
Trig In
This is an input trigger and its functionality is determined by the mode
used during an HPE6432_RunList function. This input trigger can
come from the hardware front panel, the VXI backplane, a software
function, or it can be disabled. This input trigger can be received at any
time after the settling time has occurred. However, an advance will not
take place until after the dwell time is completed.
HPE6432_SetTriggerInput(instrumentHandle,
triggerInputSource);
triggerInputSource
Source Description Source of Input Trigger
Trig In From the Trig In connector on the hardware
front panel of the synthesizer.
FRONT_IN_POS = 24 Positive The trigger is asserted with a positive edge
polarity.
FRONT_IN_NEG = 8 Negative The trigger is asserted with a negative edge
polarity.
VXI0 = 0
VXI1 = 1
VXI2 = 2
VXI3 = 3
VXI4 = 4
VXI5 = 5
VXI6 = 6
VXI7 = 7
VXI Backplane TTL
Trigger
From any one of the eight-shared VXI
backplane TTL triggers (TTLTRG0 -
TTLTRG7). The VXI backplane TTL triggers
follow the Synchronous Trigger Protocol as
outlined in the VXIbus Specification. This
means that the VXI backplane trigger line
must be asserted low for at least
250 ns.
IN_MANUAL = 9 Manual From a software Trig In trigger using
HPE6432_GenerateManualTrigger
Input().
IN_OFF = 15 Off Trig In triggers are disabled.