Agilent Technologies 24A Guia do Utilizador descarregar pdf (Página 119)

1-106

Making Measurements

Using Test Sequencing

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:

• autoscale

• data → 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 using the .

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 π.

Sequence Size

A sequence may contain up to 2 kbytes of instructions. Typically, this is around 200

sequence command lines. To estimate a sequence's size (in kbytes), use the following

guidelines.

Embedding the Value of the Loop Counter in a Title

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

data by placing a command after

the title string. (You must limit the title to three characters if you will use it as a disk ﬁle

name. The three-character title and ﬁve-digit loop counter number reach the

eight-character limit for disk ﬁle names.) This feature is useful in data logging

applications.

Autostarting Sequences

You can deﬁne a sequence to run automatically when you apply power to the analyzer. To

make an autostarting sequence, create a sequence in position six (SEQ6) and title it

“AUTO”. To stop an autostarting sequence, press . To stop an autostarting sequence

from engaging at power on, you must clear it from memory or rename it.

Table 1-4 Guidelines for Determining the Size of a Sequence

Type of Command Size in Bytes

Typical command 2

Title string character 1

Active entry command 1 per digit

Display

TITLE

LOOP COUNTER

Local

1 2 ... 114 115 116 117 118 119 120 121 122 123 124 ... 452 453

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