SME SOURce:DM
1038.6002.02 3.37 E-133
[:SOURce]:DM[:BASic]:CLOCk:POLarity NORMal | INVerted
The command sets the polarity of the time base used.
NORMal The data are accepted with a rising edge (external clock) or can be tapped at the
DATA socket with a rising edge (internal clock).
INVerted The data are accepted with a falling edge (external clock) or can be tapped at the
DATA socket with a falling edge (internal clock).
Example: :SOUR:DM:BAS:CLOC:POL NORM *RST value is NORMal
[:SOURce]:DM[:BASic]:CLOCk:SOURce INTernal | COUPled
The command selects the source for the DATA clock.
INTernal The internal clock generator is used. The CLOCK socket is switched to act as an
output.
COUPled The function of the CLOCK socket depends on the function of the DATA socket. This
means that with an external supply of the data, the clock has to be supplied
externally, with internal data generation the instrument itself generates the clock
pulse. *RST value is COUPled
Example: :SOUR:DM:BAS:CLOC:SOUR INT
[:SOURce]:DM[:BASic]:DATA
The commands to set the data generator are under this node. The bit rate at which the data are
output is to be set under the individual modulations.
The DM lists consists of a DATA, BURSt and ATTenuate content. The list contents must all be of
the same length except for contents of length 1. With QPSK, the number of entries has to be an
integer in addition. This is interpreted as if the content had the same length as the other contents
and all values were equal to the first value.
However, this is not valid for list "XMEM" offering access to the memory extension (cf. node
SOURce:DM:BAS:DATA:XMEM).
[:SOURce]:DM[:BASic]:DATA:CATalog?
The command queries the data lists available. The response supplied is an enumeration of the
data lists separated by commas. *RST has no influence on data lists.
Example: :SOUR:DM:BAS:DATA:CAT? Answer: "DLIST1", "DLIST2", "DLIST3"
[:SOURce]:DM[:BASic]:DATA:DELete "Name"
This command deletes the data list indicated. *RST has no influence on data lists.
Example: :SOUR:DM:BAS:DATA:DEL "DLIST2"
[:SOURce]:DM[:BASic]:DATA:DELete:ALL
This command deletes all data lists, with the exception of list "XMEM" (cf Chapter 2, Section "DM
Memory Extension"). *RST has no influence on data lists.
Example: :SOUR:DM:BAS:DATA:DEL:ALL
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