Digital Modulation SME
1038.6002.02 2.106 E-13
MODE
Selection of the message and fill subsequence.
ALWAYS The message subsequence is output continuously.
IEC-bus command :TRIG:DM:SOUR AUTO
SINGLE The filler subsequence is output. With the trigger
pulse, switchover to message subsequence is effected
for 12 seconds.
IEC-bus command :TRIG:DM:SOUR SING
:SOUR:ERM:TACT MESS
EXT The filler subsequence is output. With the trigger pulse
from the external trigger female connector, switchover
to message subsequence is effected for 12 seconds.
IEC-bus command :TRIG:DM:SOUR EXT
:SOUR:ERM:TACT MESS
EXTTRIG The SME only starts with the generation of the FLEX
signal after recognition of a trigger pulse at the trigger
input connector. After recognition of this signal, a
message subsequence (length: 12 seconds) is output.
IEC-bus command: :TRIG:DM:SOUR EXT;
:SOUR:ERM:TACT ONCE
EXTTRIG-ALWAYS
The units waits for a signal edge at the trigger
connector. After recognition of this edge, the unit
behaves as described under setting ALWAYS.
IEC-bus command :TRIG:DM:SOUR EXT
:SOUR:ERM:TACT STAR
EXECUTE SINGLE Ð
Starts the output of a message subsequence (length: 12 seconds).
Afterwards, fill subsequences are sent again. This action to be
executed is only displayed and is only effective if MODE SINGLE is
selected.
IEC-bus command *TRG
CLOCK SOURCE
Selection of the clock source. This setting is also valid for FLEX,
REFLEX and POCSAG but not for the other digital modulations.
INT The clock required for signal generation is generated
internally and can be tapped at the CLOCK connector.
EXT The signal applied to the CLOCK connector is used as
the clock signal.
Note: For all bit rates, i.e. for 1600 bps and 3200 bps, a symbol
clock rate of 3200 Hz is always used. This applies to both
the output (CLOCK SOURCE INT) and the input (CLOCK
SOURCE EXT) of the clock.
IEC-bus command :SOUR:SOUR:DM:COMP:CLOC:SOUR INT
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