Programming with GPIB Commands
2-16 List Sweep Commands
MG369xC GPIB PM
PN: 10370-10374 Rev. F
2-41
2-16 List Sweep Commands
lists the list sweep command mnemonic codes. These commands provide for (1) placing the
signal generator in list sweep mode, (2) accessing up to four lists of 2000 frequency/power level sets, and
(3) generating a phase-locked step sweep of the list frequency/power level sets.
In list sweep mode, up to four lists of 2000 non-sequential frequency/power level sets can be stored and
accessed. A list index (0 thru 1999) identifies each frequency/power level set in a list. When commanded, the
signal generator generates a phase-locked step sweep between the specified list start index and list stop index.
Accessing and Editing a List
The command,
LST
, places the signal generator in list sweep mode. The
ELN(x)
command is used to select
which of the four lists is to be accessed. The first list (list number 0) is the same list that is available via local
(front panel) control. This list is stored in non-volatile RAM to preserve any settings after the instrument is
powered off. The other three lists (list numbers 1, 2, and 3) are all stored in volatile RAM and all settings are
lost when power to the signal generator is turned off. At power up, list numbers 1, 2, and 3 are set to their
default state of 2000 index entries of 5 GHz at 0 dBm.
The
ELI(xxxx)
command sets the list index for the current list. Use the
LF
command to set the list
frequencies starting at the list index and the
LP
command to set the list power levels starting at the list index.
Any number of frequencies and power levels can follow these commands.
Another method of entering frequency and power level information into the current list index is to use the
command,
CTL
, which copies the current CW frequency and power level to the current list index.
Programming Example:
Programming “
LST ELN1 ELI1234 LF 2 GH, 5 GH, 1 GH, 8 GH LP 2 DM, 9 DM, –3 DM, –10 DM
”
places the signal generator in list sweep mode, selects list number 1, and sets the list index to 1234.
List index 1234 is set to 2 GHz at 2 dBm, list index 1235 is set to 5 GHz at 9 dBm, list index 1236 is set to
1 GHz at –3 dBm, and list index 1237 is set to 8 GHz at –10 dBm
Table 2-17.
List Sweep Commands
Mnemonic
Code
Function
CTL
Copy current CW frequency and power level to current list index.
ELI(xxxx)
Sets list index to xxxx.
ELN(x)
Sets the list number to x.
LDT
Opens the list sweep dwell time parameter.
LEA
Learn List (in List Sweep mode).
LF
Sets list frequencies starting at the list index.
LIB(xxxx)
Sets the list start index to xxxx.
LIE(xxxx)
Sets the list stop index to xxxx.
LP
Sets list power levels starting at the list index.
LST
Places the MG369xC in list sweep mode.
Содержание MG369 C Series
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