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DX-D 400
User Manual
AND MOBILE RF COMMUNICATIONS EQUIPMENT AND THE RADIOGRAPHIC ROOM
The DX- -D400 radiographic room is intended for use in an electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of The DX- -D400 radiographic room can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and The DX- -D400
radiographic room as recommended below, according to the maximum output power of the communications equipment.
Rated maximum output power
of transmitter
of transmitter
W
0.01
0.1
1
10
100
GMRS device (Professional Walkie--Talkie): 5 W @ 462--467 MHz
GSM / UMTS cell phone: 2 W @ 850/1700/1900 MHz
FRS device (Amateur Walkie--Talkie): 500 mW @ 462--467 MHz
WiFi / Bluetooth devices: 100 mW @ 2400--2500 MHz
DECT devices (modern cordless phones): 100mW @ 1880--1900 MHz
RFID reader (3): 10 mW @ 125--150 KHz / 13.56 MHz
RFID reader (3): 10 mW @ 902--928 MHz / 2400--2500 MHz
Station transmitter ATSC TV broadcasting: 100 kW @ 54--800 MHz
Station transmitter ATSC TV broadcasting: 100 kW @ 800--890 MHz
Station transmitter FM radio broadcasting: 100 kW @ 87.5--108 MHz
For transmitters rated at a maximum output power not listed above, the recommended separation distance 'd' in meters (m) can be
estimated using the equation applicable to the frequency of the transmitter, where 'P' is the maximum output power rating of the
transmitter in watts (W) according to the transmitter manufacturer.
NOTE 1 - - At 80MHz and 800MHz, the separation distance for the higher frequency range applies.
NOTE 2 - - These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from
structures, objects and people.
34
RECOMMENDED SEPARATION DISTANCES BETWEEN PORTABLE
(IEC 61601-1-2:2007)
Separation distance according to frequency of transmitter
150 KHz to 80MHz
d = 1.2 P
0.12
0.38
1.2
3.8
12
TYPICAL RF DEVICES (Worst-Case scenario)
Device: Power @ Frequency
m
80 MHz to 800MHz
d = 1.2 P
0.12
0.38
1.2
3.8
12
Recommended distance(m)
800 MHz to 2.5GHz
d = 2.3 P
0.23
0.73
2.3
7.3
23
2.7
3.3
0.9
0.8
0.8
0.12
0.23
380
730
380
0232F EN 20191213
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