Agilent Technologies VXI E1439 - Manual (Page 196)

186
Agilent E1439 Programmer's Reference
Functions listed alphabetically
AGE1439_EXTERNAL uses transitions on the signal applied to the BNC external trigger
connector on the front panel.
AGE1439_EXTERNAL_ECL uses ECL level transitions on the signal applied to the BNC
external trigger connector on the front panel.
Note
AGE1439_EXTERNAL_ECL has the same constant value as the AGE1439_EXTERNAL
constant in the E1439C. AGE1439_EXTERNAL is retained for backward compatibility.
AGE1439_EXTERNAL_TTL uses TTL level transitions on the signal applied to the BNC
external trigger connector on the front panel.
Note
AGE1439_EXTERNAL_TTL is supported on all E1439B, C and D modules, but it is not
supported on early E1439A modules. A module with a serial number lower than US41140000
will result in the error
AGE1439_TTL_TRIGGER_NOT_SUPPORTED .
AGE1439_USER disables the module from any event-driven trigger generation though it is still
possible to force the module to trigger a measurement by pulling the Sync line once the module is
in the trigger state. You may do this by calling the age1439_meas_start function, waiting for the
module to reach the trigger state, then triggering the measurement by using age1439_meas_
control to pull the Sync line.
AGE1439_IMMEDIATE triggers a measurement immediately upon entering the trigger state.
Note
In multi-module systems all modules should be use the same trigger type in order to have the
same actual delay.
trigTypePtr points to the current value of trigType.
Return Value
AGE1439_SUCCESS indicates that a function was successful.
Values other than AGE1439_SUCCESS indicate an error condition or other important status
condition. To determine the error message, pass the return value to
“age1439_error_message” on
page 102 .
See Also
“Commands which halt active measurements” on page 198 , “Default values” on page 201 ,
“age1439_init” on page 132 , “age1439_frequency_setup” on page 128 , “age1439_data_setup” on
page 90 , “age1439_data_scale_get” on page 89 , “age1439_filter_setup” on page 120 , “age1439_
meas_start” on page 155 , “age1439_meas_control” on page 151 , “age1439_trigger_phase_
actual_get” on page 182 , “age1439_trigger_delay_actual_get” on page 181 , “The measurement
loop” in chapter 3 , “Managing multiple modules” in chapter 3 , “Delay and phase in triggered
measurements” in chapter 3 , “Magnitude trigger and magdwell time” in chapter 3