“AT” command sent to the serial port. The RF power output can be set from 5mW to 500mW
by a potentiometer also located inside the case. The modem can be configured to transmit a
continues RF carrier so that a site can be surveyed to find the best reception locations and
antenna installations can be correctly aligned and tested.
The X7200 radio modem is powered from a regulated DC source of between 8.5v to 14V. In
receive mode it will take 80mA and in transmit 330mA. Taking DTR low will switch the
modem into a power saving stand-by mode. In this state it will consume approximately 0.1
mA. It will take approximately 20mSec for the modem to become fully operational after DTR
is taken high or power is applied. The modem is protected by an internal resetable fuse.
The modem is housed in a robust, lightweight aluminium enclosure measuring 114mm by
65mm by 26 mm.
Additional options include:
X7201 12V power supply.
X7202 PC to Modem cable.
X7204
IP67
enclosure.
X7205 Leather carrying case.
X7206 Belt mounted battery packs.
X7207 600 ohm line interface module.
2.0 SPECIFICATION
2.1 Radio
RF
Frequency
400MHz
-
480MHz
RF Power:
X7400
5mW
X7200
5mw
–
500mW
X7200HP
1W
–
12W
Channels
17
Channel Separation
25KHz / 12.5KHz
Modulation
F3D.
F1D
Receiver Sensitivity
0.3µV for 10dB SINAD
Antenna
Connector
BNC/TNC
2.2 Modem
Interface Baud Rate
(standard)
19200, 9600; 4800, 2400, 1200
(extended)
600, 300, 150
Data
Word
8
bits
Parity
Odd,
even,
None
Stop
Bits 1
Modulation
Gaussian
Minimum
Shift
Keying
Interface RS232/RS422
Transmission speed
10Kbits/sec, 5Kbits/sec
2.3 Power
Supply
DC Supply Voltage
8.5V to 14V (12V nominal)
DC Supply Current
X7200
Transmitting
330
mA
Receiving
80
mA
Stand
By 0.l
mA
