R&S SMU200A Test Assemblies
1007.9845.82 1.7
E-12
Table 1-3 Function of data bits of FHOP bus (fhop_data line, see following figure) and their function for
controlling fast frequency hopping
Data bit name (bit number) Function
path (39) Selects RF path:
0 = RF path A;
1 = RF path B
imm_n (38) Selects Fast Hop mode:
0 = Fast Hop Direct (the selected settings are performed at once after data transfer of a
complete sequence (40 bits) without additional triggering)
1 = Fast Hop (the selected settings are performed after an instrument trigger)
cmd (37 to 32) Selects function for fast hop mode.
Bit 32 must be set to 1 (= List Mode)
Bit 37 to 33 must be set to 0 (= reserved for future extensions)
data (31 to 0) Data bits
Determine the list index (frequency/level setting) to be processed for List Mode
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