Agilent Technologies Multiple Channel Controller 85330A - Manual (Page 86)

6-12 85330A Multiple Channel Controller
Programming
To Use Run-Time Control Mode
To Use Run-Time Control Mode
Setup of the
85330A Multiple
Channel Controller The setup for run-time operation includes setting:
•
The event triggering method
•
The number of frequency points
•
The number of angular increments
•
List of switch states
•
Switch settling time
•
TTL trigger and ready timeouts
•
Using more than one controller
Once the 85330A is set up, send the RUNT:INIT:IMM command to begin run-time
operation. Figure 6-2 on page 6-16 is a flow chart that illustrates the
run-time measurement sequence. Commands are described in Chapter 7,
“Remote Programming Command Reference.”
Event Triggering
During run-time operation, the 85330A may use two different types of event
triggering, TTL or IMM. Most angle scan measurements will be set up for
TTL triggering, while TTL triggering can be suppressed for a frequency
response measurement, typically at a single angle. Also, this IMM mode
combined with the
*OPC? command is useful for determining timing
information of a multiple-frequency, multi-parameter measurement.
Applicable command: RUNTime:EVENte:TRIGger
Number of Frequency
Points The 85330A does not require a start, stop, or frequency step size. In fact, it
does not require any frequency values. It only needs to know the number of
frequency points so it can issue the correct number of triggers.
Applicable command: RUNTime:SOURce:COUNt
Number of Angular
Increments (Events) The 85330A does not require any angular values. It only requires the number
of angular increments so it can issue the correct number of triggers.
Applicable command: RUNTime:EVENt:COUNt
List of Switch States One must set up the list of channel addresses for the measurement. For each
event trigger received by the 85330A, each channel address entry will be
asserted and a subsequent trigger issued to begin a measurement of each data
point.
Applicable command: RUNTime:SWITch:SCAN