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Making Measurements
Using Test Sequencing
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.
The GPIO Mode
The instrument's parallel port can be used in two different modes. By pressing and then toggling
the softkey, you can select either the mode or the mode.
The GPIO mode switches the parallel port into a “general purpose input/output” port.
In this mode, the port can be connected to test fixtures, power supplies, and other peripheral equipment that
the analyzer can interact with through test sequencing.
TESTSET I/O
The TESTSET I/O interconnect on the rear panel was originally intended for use solely with the HP/Agilent
85046A/B and HP/Agilent 85047B external S-parameter test sets. Since the introduction of the 8753D, a
network analyzer with an internal test set, this test set I/O port has become a general purpose control port
for a variety of external devices, such as the K36 or K39 test adapters and Option 014 configurations. Refer
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