HP 8340A Operating Manual page 202

SUMMARY
The HP 8340A is both a high performance broadband synthesizer and a broadband sweeper, and is thus a valuable
component of automatic test systems. Its broadband analog sweep capability can be used for faster and more
thorough characterization than is possible from a digitally stepped sweep.
needed, the 8340A 's frequency accuracy and programmability,
techniques described in this note, will provide a fast and repeatable stimulus.
2)
For easy reference, the following table (TABLE
NORMAL MODE
STEP SIZE COMMANDS (frequency specified
in any format)
RANDOM OUTPUT
STEP
SIZE
Typically 45 ms
UP
SEQUENTIAL OUTPUT
&
STEP OUTPUT 719;"SF";S;"GZ"
SIZE DN OUTPUT 719; "CW"
FOR/NEXT loop to
increment frequency
Typically
OUTPUT
OUTPUT
OUTPUT 719; "CW"
FOR/NEXT loop to
increment
Typically
TRIGGER
OUTPUT 719;"CW";F;"GZ"
719 OUTPUT 719;"SF";S;"GZ"
OUTPUT 719;"CW"
FOR/NEXT loop to
increment frequency
Typically 25 ms
TABLE 2.
Comparison of Commands and Resulting Switching Times
1 For
complete information on the various
refer to the respective sections.
6
If, however, point to point information is
combined with the improved switching
summarizes the different techniques and resulting switching times.
cw 1
FAST PHASE-LOCK MODE
(frequency specified in
exponents or hertz format)
719;"CW";F;"GZ" OUTPUT 719;"CW"
I
OUTPUT l9;.FP";F;"HZ"
WAIT 16
Typically 22 ms
719;"CW";F;"GZ" N/A
45 ms
719;"CW";F;"GZ"
N/A
719;"SF";S;"GZ"
frequency
25 ms
OUTPUT 719;"CW SF";S;"GZ"
OUTPUT l9;•FP";A
I
WAIT X
(where X is time in
milliseconds)
FOR/NEXT loop to
increment frequency
including a WAIT time
of X milliseconds
Typically <22 ms
commands and programming
\
1
speed
MANUAL SWEEP
NORMAL MODE
(frequency specified
in any format)
OUTPUT 719;"S3";F;"GZ"
Typically 45 ms
OUTPUT 7l�;"FA";A;"GZ"
OUTPUT 719;"FB";B;"GZ"
OUTPUT 719;"SF";S;"GZ";
Output 719;"S3";A;"GZ"
FOR/NEXT loop to
increment frequency
35 ms
Typically
OUTPUT 719;"FA";A;"GZ"
OUTPUT 719;"FB";B;"GZ"
OUTPUT 719;"SF";S;"GZ"
OUTPUT 719;"S3";A;"GZ"
FOR/NEXT loop to
increment frequency
Typically 25 ms
OUTPUT 719;"FA";A;"GZ"
OUTPUT 719;"FB";B;"GZ"
OUTPUT 719;"SF";S;"GZ"
OUTPUT 719;"S3";A;"GZ"
FOR/NEXT loop to
increment frequency
Typically 25 ms
Scans by HB9HCA and HB9FSX
l
FIXED POINTS MODE
(specify number of
steps desired)
N/A
N/A
OUTPUT 719;"FA";A;"GZ"
OUTPUT 719;"FB";B;"GZ"
OUTPUT 719;"SN";N
(where lO<N<lOOO)
FOR/NEXT To op to
implement frequency
Typically 25 ms
OUTPUT 719;"FA";A;"GZ"
OUTPUT 719;"FB";B;"GZ"
OUTPUT 719;•SN"; N
(where lO<N<lOOO)
FOR/NEXT loop to
increment frequency
Typically 25 ms
7