Synchronize over PPS Trig

Synchronizes USRP RIO devices over the PPS Trig lines.

Inputs/Outputs

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sync.resources in

Synchronization instance. sync.resources is obtained from the Create node.

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enable

A Boolean that specifies whether to synchronize the input edge or not.

Note The sync.fpga io may be floating until a target is specified as the master. enable should be FALSE until after the host Synchronization node executes to prevent erroneous outputs on synchronized edge.
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edge

Signal being synchronized. Because the first block this input encounters is a rising edge detector, the input signal edge is treated as a pulse.

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common reference

The "start" signal used by the measurement logic.

When you use the FPGA Align node, the common reference must be the same clock to which the FPGA clock of the target is locked.
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clock x2

Measurement clock used by the measurement logic.

This clock must run at twice the rate of the FPGA Clock, which is the clock that drives the clock-driven loop (CDL) that this node is in. This clock must also derive from the FPGA Clock so that it has a fixed phase relationship. This clock is commonly Data Clock x2.
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sync.fpga io in

The FPGA I/O line to receive the measurement signals on. This line is commonly the PPS TRIG IN line.

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sync.fpga io out

The FPGA I/O line to send the signal out on.

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sync.resources out

The same instance that was passed in for sync.resources.

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synchronization delay

The number of clock cycles of delay that were added by synchronizing the input edge. This value is zero if enable is FALSE. If enable is TRUE, this value is valid only on the master target.

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synchronized edge

The synchronized input edge if enable is TRUE.