Programming with GPIB Commands
2-17 Fast-Frequency-Switching Commands
MG369xC GPIB PM
PN: 10370-10374 Rev. F
2-43
2-17 Fast-Frequency-Switching Commands
lists the fast-frequency-switching command mnemonic codes. These commands provide for reducing
the time that it takes to switch between CW frequencies.
In the fast-frequency-switching mode, up to 3202 frequencies can be loaded into a table. A table pointer can
then be set to point to a specific frequency in the table and the signal generator commanded to switch from that
frequency through the following frequencies to the bottom of the table.
Loading the Frequency Table
To load the frequency table, use the command
ZTLbbbbnnnnD8D8D8. . . . . . D8
, where “
bbbb
” is the
table location where the frequency points are to start loading, “
nnnn
” is the number of frequency points to be
loaded, and “
D8
” is the frequency of the frequency point. Both “
bbbb
” and “
nnnn
” are 4 binary byte integers and
“
D8
” is 8 binary bytes of an IEEE-754 double precision floating point number. The order of the bytes in each
field is most significant byte first.
show an example of fast-frequency-switching mode programming.
Note
Use of the commands
ZL(x)
,
ZEL
, and
ZS(x)
limits the number of frequency points in the table
to 1000.
Table 2-18.
Fast-Frequency-Switching Commands
Mnemonic Code
Function
ZPN(bbb)
Sets the table pointer (bbbb), where bbbb is the location the pointer is to
point to.
ZTL(bbbnnnD8D8D8. . . D8)
Loads the frequency table (bbbbnnnnD8D8D8. . . . . . D8), where bbbb is the
table location where the frequency points are to start loading, nnnn is the
number of frequencies to be loaded, and D8 is the frequency of the
frequency point.
ZL(x)
Loads a CW frequency into the stack at location x. The location is a number
from 000 to 999.
ZEL
Ends frequency loading.
ZS(x)
Sets the stack pointer to point to location x. The location is a number from
000 to 999.
Содержание MG369 C Series
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