User`s guide

1-109
Making Measurements
Using Test Sequencing
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.
NOTE Presetting the instrument does not run the Auto Sequence automatically.
Gosub Sequence Command
The softkey, located in the Sequencing menu, activates a feature
that allows the sequence to branch off to another sequence, then return to the original
sequence. For example, you could perform an amplifier measurement in the following
manner:
1. Create sequence 1 for the specific purpose of performing the gain measurement and
printing the results. This sequence will act as a sub-routine.
2. Create sequence 2 to set up a series of different input power levels for the amplifier gain
measurements. In-between each power level setting, call sequence 1 as a sub-routine by
pressing . Now, sequence 2 will print the
measurement results for each input power level applied to the amplifier.
NOTE The softkey branches the sequence to another
sequence in a particular location (SEQ1 through SEQ6), not to a given file
name.
Table 1-5 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
MORE
TITLE
MORE
LOOP COUNTER
Local
GOSUB SEQUENCE
GOSUB SEQUENCE
SEQUENCE 1
GOSUB SEQUENCE