Digital Modulation SMIQ
1125.5555.03 E-92.102
(SOURCE... ) SOURCE...
Opens a window for selecting the source for
modulation data.
EXT_PAR The modulation data are fed in via the
parallel PAR DATA interface at the rear
of SMIQ.
IEC -bus
:SOUR:DM:SOUR PAR
EXT_SER The modulation data are fed in serially
at input DATA.
IEC -bus
:SOUR:DM:SOUR SER
PATTERN A simple data pattern is continuously
generated.
IEC-bus
:SOUR:DM:SOUR PATT
PRBS A pseudo random bit sequence is
generated and continuously repeated.
IEC -bus
:SOUR:DM:SOUR PRBS
SERDATA The modulation data are fed in via the
asynchronous SER_DATA interface.
IEC -bus
:SOUR:DM:SOUR SDAT
DATA LIST Modulation data from lists
IEC-bus
:SOUR:DM:SOUR DLIS
PATTERN
Selection of a simple data pattern which is
continuously generated.
0 0s are continuously generated.
IEC -bus
:SOUR:DM:PATT ZERO
1 1s are continuously generated.
IEC -bus
:SOUR:DM:PATT ONE
01 010 data changes are continuously
generated.
IEC -bus
:SOUR:DM:PATT ALT
PRBS LENGTH
Setting of PRBS generator length. 9 bit, 15 bit, 16 bit,
20 bit, 21 bit and 23 bit can be selected. The period
of the data sequence is then between 2
9
-1 and 2
23
-
1 bit (see Section 2.10.3 "Internal PRBS Data and
Pattern").
IEC/IEEE-bus command
:SOUR:DM:PRBS 15
SELECT DATA LIST
Opens a window for selecting a stored data list or for
generating a new list.
IEC/IEEE-bus
:SOUR:DM:DLIS:SEL ´name´
COPY CURRENT
DATA LIST TO
Stores the current data list under a different name.
IEC/IEEE-bus
:SOUR:DM:DLIS:COPY ´name´
DELETE DATA LIST
Deletes a data list.
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