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Setup
Power supply
AC voltage:
DC voltage (protected against
polarity reversal):
3.4 Fitting and connecting the antenna
Antenna
characteristics
Page 18 of 63
The ZDUE-GPRS-PLUS-VI can be operated with either AC or DC voltage.
Nominal values
100VAC to 230VAC without
changeover (50/60 Hz)
60VDC to 100VDC without
changeover
The device conforms to protection class 2. The power supply to the
interfaces is electrically isolated from the electronics.
Antenna connection
The antenna that is used should have an impedance of about 50 ohms. The
antenna must be adapted to the frequency bands of the GSM network
operator you have chosen: 850 MHz, 900 MHz, 1800 MHz or 1900 MHz.
In Europa and China GSM 900MHz snd DCS 1800MHz are used, in USA
GSM 850 MHz and PCS 1900 MHz are used. Please ask your network
operator.
The match (VSWR) of the antenna must be 1:2.5 or better.
Use only antennas from the accessories for the ZDUE-GPRS-PLUS-VI.
Other antennas could interfere with product characteristics or even lead to
defects.
Maximum values
76VAC to 253VAC
54VDC to 110VDC
The antenna is connected to the type SMA
antenna jack. The position of the antenna
connection may vary depending on the device
type.
The antenna must be installed in such a way that
adequate signal quality is achieved. Make sure
that there are no large metal objects in close to
the antenna (e.g. reinforced concrete), as they
may have an adverse effect on the signal quality.
If an exterior antenna is mounted out of doors,
its support bracket must be earthed for
protection against lightning. Have this work
done by qualified personnel!
Observe the instructions included with your
antenna.
ZDUE-GPRS-PLUS-VI
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