SME Digital Modulation
1038.6002.02 2.115 E-13
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, the next frame is
output in the way it has been specified under FRAME
CONTENTS.
IEC-bus command: :TRIG:DM:SOUR EXT;
:SOUR:FLEX:TACT ONCE
EXTTRIG-ALWAYS
The units waits for a signal edge at the trigger connector
(same as EXTTRIG). After recognition of this edge, the unit
behaves as described under setting ALWAYS.
IEC-bus command: :TRIG:DM:SOUR EXT
:SOUR:FLEX:TACT STAR
EXECUTE SINGLE
The next frame is output in the way it has been specified under FRAME
CONTENTS. This triggerable action is only displayed and active when
MODE SINGLE has been selected.
IEC-bus command: *TRG
CLOCK SOURCE
Selection of the clock source. This setting is also valid for ERMES, 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.
IEC-bus command: :SOUR:DM:COMP:CLOC:SOUR INT
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.
To Next Page
Loading...
