Frequently Asked Questions
Q:
Can data be sent directly from the IO Slave to the Master of the FreeWave network?
A:
No. The FGRIO system functions as wire replacement only. The IO Slave does not
have the capability of transmitting data directly to the Master of the network.
Q:
What are the sizes of the FGRIO Master and Slave?
A:
The board level IO Slave has the same footprint as the FGRO9 family. The board level IO
Slave dimensions are 127 mm (L) x 61 mm (W) x 15.5 mm (H). The FGRIO Master is a
standard footprint FGRO9 plus an IO Interface board on top, differing only in width at 2.75
inches. The dimensions of the FGRIO Master are 140 mm (L) x 70 mm (W) x 34 mm (H).
Q:
What timing issues does IO introduce?
A:
Although IO mimics a wired connection, the electronics and communication heartbeat
do cause some signal delay. The worst case delay for digital signals in either direction and
the Sensor Power command from FGRIO Master to IO Slave is 167 msec, assuming a
robust link. Worst case delay from FGRIO Master Sensor Power assertion to FGRIO Master
Analog Output refresh is 700 msec.
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