Digital Modulation SME
1038.6002.02 2.126 E-13
EXTTRIG-ALWAYS The SME only starts with the
generation of the ReFLEX25 signal after
recognition of a trigger pulse at the trigger input
connector. Then, this mode behaves as
described under the setting ALWAYS. This
setting can be used to synchronize two SMEs.
IEC-bus command
:TRIG:DM:SOUR EXT;
:SOUR:REFL25:TACT STAR
EXECUTE SINGLE Ð
See description of MODE SINGLE
IEC-bus command:
*TRG
CLOCK SOURCE
Selection of the clock source. This setting applies to ERMES,
POCSAG, FLEX and REFLEX at the same time, however not to
the other digital modulations. The EXT setting can be used to
synchronize two or more SMEs.
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 INT
Note: For all bit rates, i.e. for 1600bps and 3200bps also, a
symbol clock rate of 3200Hz is always used. This applies
both to the output (CLOCK SOURCE INT) and to the input
(CLOCK SOURCE EXT) of the clock
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