EXFO FTB-1v2 Guide De L'utilisateur page 475

Masquer les pouces Voir aussi pour FTB-1v2:

Parameter(s)

Possible error(s)

FTB-1v2 and FTB-1v2 Pro

COM Properties and Events

With this method you can retrieve all the data

from the device output queue in a UNICODE

A string value (in UNICODE format).

This method must be used in conjunction with

the Write method. Always ensure that a query

has been previously sent before attempting to

read a response from the output queue.

To properly set the data format, send the

following command (using the Write method):

FORM:DATA<wsp>ASCII <number_of_digits>

where <number_of_digits> corresponds to the

number of digits after the decimal point that you

Remember that the retrieved data will have to be

converted to a numeric format before you can

use it in calculations, for example.

Timeout: This error will occur if the allowed

delay has expired before the preceding Write

operation could send a response to the output

queue. For information on timeout setting, see

Initialize on page 465.

QueryUnterminated: This error will occur if the

output queue is empty (for example, no query

has been made previously).