Specifications
Figure 2: IQ Timing
Table 69: IQ Timing
Real Time Span
Mode
T0 (Clock Period)
T1 (Min Setup time)
T2 (Min Hold Time)
>40 MHz
16-bit
5 ns
1.20 ns
1.23 ns
≤
40 MHz
16-bit
20 ns
8.2 ns
8.4 ns
Possible Interruption
of Data from Digital I/Q
Outputs
There are three conditions during which the RSA5100B will interrupt the flow of
data to the digital I/Q outputs. Those conditions are:
Alignments
Control Changes
Stitched Spectrum Mode
When any of these conditions are active, the EXT_IQ_DAV signal will be held in
its inactive state. The EXT_IQ_CLK signal will remain active and operate at the
frequency consistent with the SPAN value selected for the RSA5100B.
The EXT_IQ_DAV signal will remain inactive for the duration of any alignment
or control change. Once the alignment or control change has been completed, the
EXT_IQ_DAV signal becomes active again. While the EXT_IQ_DAV signal is
inactive, the data from the digital I/Q outputs are not valid and should be ignored.
RSA5100B Series Technical Reference
69
