User Guide: Technical Reference
SECTION 2
ioLink 4
SYSTEM COMPONENTS
PRELIMINARY
Customer Support (202) 333-7031
2-4
The RF unit consists of two circuit boards, a power supply (PS) board and an RF board, placed in a 12”
High x 12” Wide x 4 1/4” Deep NEMA-4 weatherproof enclosure. The RF unit is usually mounted directly
behind the antenna, therefore it has mounting holes in its base-plate flange enabling easy attachment to a
tower or pole. It has two TNC-type jacks for connecting to the modem unit via the IF cable and an N-type
jack for connecting to the antenna via the RF cable.
Figure 2-3. RF Unit Connections
The PS board contains cavity filters, an isolator, circulator, and a DC-DC converter, which supplies the
various voltages needed in the RF unit.
Note:
ioWave
`s standard RF unit transmits a 15 dbm power output. A “high power” option is now
available which transmits 25 dbm. This option can be utilized in any instance where an antenna upgrade
in gain is not a viable alternative, while at the same time keeping in mind FCC threshold regulations.
Antenna
TX
RX
S/N:
FCC ID:
2.4 GHz
