FiberPlex FOM-1090 - Manual (Page 20)

Typical Applications
Standard Configuration
The user can achieve complete electrical isolation for NRZ data communications in areas of high electrical
noise or in/out of RF shielded enclosures (SCIF). The fiber optic cable is not susceptible to induced impulse
noise and since signal ground is not carried over the link, the signal is not affected by elevated ground
potential from lightning or other sources. The fiber optic cable enhances privacy of communications. A typical
link consists of a FOM‐1090 (DCE) at one end and a FOM‐1091 (DTE) at the opposite end.
Null Modem
Some applications, due to cabling or infrastructure constraints require a Null modem between devices. A pair
of the same units may be used together as when using two FOM‐1090 DCE units to create a null modem link.