Digital Modulation SME
1038.6002.02 2.120 E-13
STATE
ON Switches on ReFLEX25. The status line displays the
cycle and frame number and the type of output data as
well as the word “RFLX“ (see table under FRAME
CONTENTS).
A switchover from STATE OFF to STATE ON results in a
recalculation of the telegram and its entry into the list
“XMEM“. Changing the ReFLEX parameters, except for
FRAME CONTENTS, AUTO ADAPTATION, MODE and
CLOCK SOURCE, requires a recalculation of data. With
radiocommunication service ReFLEX activated (STATE
ON), the warning „Signal output / ReFLEX settings
mismatch - use RECALCULATE“ is displayed in this
case. The recalculation of data can either be effected by
switchover to STATE OFF / STATE ON or by triggering
RECALCULATE ->
OFF Switches off ReFLEX
IEC-bus command SOUR:REFL25:STAT ON
MODULATION
Selection of used bit rate and modulation. Four modulations are
available: 1600bps/2FSK, 3200bps/2FSK, 3200bps/4FSK and
6400bps/4FSK.
IEC-bus command: SOUR:REFL25:MOD 1600,FSK2
DEVIATION
Input value of frequency deviation of modulation. The deviation
specifies the spacing from the carrier to the two further placed
symbols in 4FSK. The ReFLEX25 standard specifies 2400Hz for
this value which may be varied for testing.
IEC-bus command: SOUR:REFL25:DEV 2.4kHz
-- MESSAGE --
The parameters of this section permit to set the address of the
receiver to be called, define the useful data of the message and
determine whether the receiver is to return a confirmation.
Note: The category of a sent message does not have to be
specified in this section. It is rather determined by the
selection of appropriate frames under FRAME
CONTENTS.
PERSONAL ADDRESS
Input value of the address of the receiver to be called. The values
range from 16 777 216 to 1 073 741 823.
IEC-bus command: SOUR:REFL25:MESS:PADD 16777216
NUMERIC MESSAGE
Opens a window to enter the character string for a numeric
message. The SME provides a maximum of 41 characters. In
addition to the 10 figures “0“ to “9“, other characters such as
square brackets left and right “[“ and „]“, upper-case letter „U“,
hyphen “-“ and blank space “ “ can be used.
IEC-bus command:
SOUR:REFL25:MESS:NUM “[49-89-] 4129-1131“
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