User's Manual

63
Document Number: 0100SM1401 Issue: 12-16
Physical Interfaces
Antenna port
(TNC)
Serial port -
COM 1 & 2
Ethernet
USB port
DC input
10 to 30 V
port 1
Ethernet
port 2
Power Supply Requirements
Rated Operating Voltage: 10...30 Vdc
Nominal Operating voltage: 12 and 24 Vdc
Input Power (Rx typical): 5 Watts
Input Power (Tx typical): (See table below)
Typical receive/standby input power is 5 Watts. The input power will vary in transmit
mode according to RF output power level.
The QR450 is supplied with a lock-in mating DC power connector (Schneider
Electric Part Number TBUMPWR-PLUG-QR-A) which should be installed with the
locking screws done up tightly (0.5 - 0.6 Nm / 4.42 - 5.31 ftin).
The radio is designed to limit damage if the voltage exceeds 30 Vdc or if reverse
polarity is applied. The field-replaceable internal fuse has a 7 Amp rating. Fuses are available from Schnedier Electric, part
number TBUMPWR-FUSE-QR. Fuse replacement instructions can be found within this user manual.
Tx Power (dBm)
Typical Input
Power (Watts)
30 24
37 37
40 52
Connect and secure the antenna, Ethernet and serial connectors BEFORE applying power to the unit. Lastly, before inserting
the power connector, re-check that the polarity and voltage is correct using a multimeter and check the power cable against
the +/- label printed on the front panel of the radio.
Part F – Quick Reference Guide
NOTICE
HAZARD OF EQUIPMENT DAMAGE
The radio modem can be damaged if there is any potential difference between
the chassis-ground, RS232 signal ground, power (-) input, or antenna coaxial
shield. Before connecting any wiring, ensure that all components are earthed to a
common ground point.
Failure to follow these instructions can result in equipment damage.
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