
SATEL-EASy+
User Manual
Version 1.19
15
4
INTERFACE – CONNECTORS & LEDS
4.1
Antenna connector
All models have a single TNC female type antenna connector with impedance of 50 Ohm.
The antenna should always be connected when the power is on. Removing the antenna while
the transmitter is on may damage the power amplifier inside the transmitter.
4.2
Power supply
The radio modem will consume electric power when connected to a power supply. The amount
of power the modem consumes depends on the operational mode it functions. Highest power
consumption is while transmitter is active, and output RF-power level is set to maximum. Even
higher power is drawn from the power supply in a moment when the modem is being connected
to a power supply. This so-called inrush current can be several times higher than normal current
consumption but will last only few ten milliseconds. For proper operation it is crucial to assure
that the power supply has output power rated to higher than the maximum power consumption
of the device and that the power supply can handle short inrush currents properly.
SATEL-EASy+ is available in one operating voltage range. The voltage range is:
+7
…
+27.5 V
DC / +20% / -15%
*
*Note: As a result of new revision of safety standard IEC600001, voltage range is now marked
with wider tolerance limits. Maximum and minimum operating voltages can be found from the
Technical Specifications -chapter.
As an increased safety feature, it is recommended to add a fuse between the power supply and
the modem. This assures that both, the device and the power supply, is protected against over
current situations. Recommended fuse size is 2 Amps.
Operating voltage range of SATEL-EASy+ is marked to a back of the housing as follows: