Commands That Require a Clean Sweep

Many front panel commands disrupt the sweep in progress. For example, changing the channel or measurement type. When the analyzer does execute a disruptive command in a sequence, some instrument functions are inhibited until a complete sweep is taken. This applies to the following functions:

nautoscale

ndata + memory

Forward Stepping In Edit Mode

In the sequence modify mode, you can step through the selected sequence list, where the analyzer executes each step.

Titles

A title may contain non-printable or special ASCII characters if you download it from an external controller. A non-printable character is represented on the display as a.

Sequence Size

A sequence may contain up to 2 kbytes of instructions. Typically, this is around 200 sequence command lines. ‘Ib estimate a sequence’s size (in kbytes), use the following guidelines.

Type of Command

Size in Bytes

Typical command

2

Title string character

1

Active entry command 1 per digit

Embedding the Valne of the Loop Counter In a Title

You can append a sequentially increasing or decreasing numeric value to the title of stored data by

,/,.,.;,.,.,.,.,.,.,.,.,.,_.,.

,.,.,.,.,.,.,.,.,...,.,., .,.,. ; _ i_ / ;

_

 

pla&g a C-1 ~~~~:~~~~~~~~~~~~~~~~~co-and after the title string. (you

 

 

,;,.,.:,.:.:.:,i~ 2;;; : u=:;a=a; ....~~_

;;. :::.:.:: ;;a ~..:~;.:i .A >r..:::::

~.i

must limit the title to three characters if you will use it as a disk tile name. The three-character title and five-digit loop counter number reach the eight-character limit for disk flle names.) This feature is useful in data logging applications.

Autostartiug Sequences

You can define a sequence to run automatically when you apply power to the analyzer. lb make an autostarting sequence, create a sequence in position six and title it “AUTO”. To stop an autostarting sequence, press ml. To stop an autostarting sequence from engaging at power on, you must clear it from memory or rename it.

The GPIO Mode

The instrument’s parallel port can be used in two different modes. By pressing [Local) and then

....._

* ,. .,., .,..,.,.,.,.,.,. ,. _

,. .,. .,.,.,.,.,.,.,.,.,.,.,.,.,.,...

.,. .,

zoF the ~~~~~~~~

softkey, you cm a&e& either the ~~~~~~~ mode or the ~~~~~~~~

 

 

.....s..2......~;~...~

_

.

The GPIO mode switches the parallel port into a “general purpose input/output” port.

In this mode, the port can be COMWted to test tlxtures, power supplies, and other peripheral equipment that the analyzer can interact with through test sequencing.

Application and Operation Conoepts 6-147

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HP 8753E manual Type of Command Size in Bytes, Active entry command 1 per digit, ZoF the ~~~~~~~~