Agilent Technologies 8935 Series Manual do Utilizador descarregar pdf (Página 57)

Chapter 2 57

Methods For Reading Measurement Results

RMB ‘ON TIMEOUT’ Example Program

380 Set up a time-out for any I/O activity on the HP-IB while

the control program is trying to regain control of the Test

Set. This will allow the function to gracefully stop

program execution if the control program cannot regain

control of the Test Set. This time-out should only occur if

there is some type of hardware failure, either in the Test

Set or the external controller, which prevents them from

communicating via HP-IB.

390 Send a Selected Device Clear (SDC) to the Test Set to put

the HP-IB subsystem into a known state. This allows the

control program to regain programmatic control of the

Test Set.

400 Command the Test Set to abort the currently executing

measurement cycle. Set the trigger mode back to

repetitive retriggering. Setting the Test Set back to

repetitive retriggering will be implementation dependent.

410 Re-enable event initiated branching. If any event initiated

branches were logged while the Measure function was

executing they will be executed when system priority

permits.

420 Exit the Measure function and return a result value of

9.E+99.

430 The following lines of code handle the case where the

control program cannot regain control of the Test Set. The

actions taken in this section of the code will be

implementation dependent. For the example case a

message is displayed to the operator and the program is

stopped.

440 Display a message to the operator that the control

program cannot regain control of the Test Set.

450 Stop execution of the control program.

Table 2-1

Program

Line

Number

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Agilent Technologies 8935 Series Manual do Utilizador Página 57