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TERM
RF BOX
RF box is any device in the RF system controlled by SMD or uLINK module. RF boxes have "A" and
"R" ports. Termination points - transceivers and antennas - are special RF boxes which have only A
ports (transceivers - a simple transceiver has one A port, a dual RX transceiver with separate 2
antenna port has two A ports) or only R ports (antennas). Other RF boxes can have more than one R or
A port; for example, a 6 way antenna switch has one R port and six A ports. A Band Pass Filter or Power
Amplifier has one R and one A port. Our Double Ten Switch has two R ports and ten A ports.
IMPORTANT: The only valid connection is from one A port to one R port. Connecting ports in parallel,
connecting an A port to another A port or an R port to another R port is not allowed.
TERM
CONTROL BOX
Generally stands for uLINK module or Relay Unit.
TERM
A PORT
Is a port of the RF box which connects to another RF box going toward the antenna.
TERM
R PORT
Is a port of RF box which connects to another RF box going toward the transceiver (radio).
TERM
ADDRESS
Every device (SMD and uLINK module) on the uLINK Bus is identified by its unique address. The
address range from 1 to 31 is reserved for SMDs and addresses from 32 to 254 are designated for
uLINK modules. Address 0 and 255 are reserved. The address for SMD is set in Router. Addresses of
the uLINK modules are set on the module.
TERM
UNIT
Unit is a group of outputs on a uLINK RELAY module used to control a specific RF Box. Outputs are
grouped into units. One uLINK Relay Module may be used to control multiple RF Devices and two uLINK
Relay modules may be paired to control an RF device requiring more than 10 control lines.
For example: we might to control two RF devices - a 6 way switch and a 4SQ box - using one uLINK
Relay10 module. Since the Six way switch needs 6 control wires and the 4SQ box needs 2 control wires,
we would define two (2) units for this module. The first unit would have six outputs for the Six Switch, the
second unit would have two or three outputs for the 4SQ. Any remaining outputs could be assigned to a
third and/or fourth unit for use with another device.
IMPORTANT: One unit always consists of a continuous sequence of outputs. Relay outputs may be skipped
only between units. Pin numbering always begins at the lowest output on the first unit and continues
upward.
NOTE: One uLINK relay module can be divided into a maximum of four (4) units.
NOTE: The local ports of SMD (PORT A and PORT B) are treated as 20 outputs in at most 10 units.
TERM
SLAVE MODE
Slave mode is a special behavior of a uLINK RELAY module used only when an RF switch requires more
than 10 control lines. Typical examples are the Double Six Switch (12 lines) or Double Ten Switch (20
lines). If module is set as slave, all of its outputs - six (6) for uLINK RELAY6 or ten (10) for uLINK
RELAY10 - are treated as a single SLAVE unit. The first unit of any other uLINK Relay module can be
used as the Master (enable) for this unit.
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14
nd
RX
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