Seca ct330 - Page 89

89
5 Appendix
5
Instructions for Use
Resting & Stress ECG with seca ct330/331 and seca diagnostic 5.9
Recommended protective distances between portable and mobile
RF telecommunication devices and seca ct330/331
seca ct330/331 is designed for use in an electromagnetic environment in
which the RF transients can be controlled. The user can help avoid
electromagnetic interference by maintaining the minimum distance
between portable and mobile RF telecommunication devices
(transmitters) and the device - depending on the power output of the
communication device, as indicated below.
Portable RF communication devices (radios) (including their accessories
such as antenna cables and external antennas) should not be used
within 12 inches (30 cm) of the manufacturer's designated parts and
leads of the seca ct330/331 device. Failure to obse
rve this warning can
compromise the performance of the device.
Use of this device directly next to other devices or stacked together with
other devices should be avoided, as this could result in fault operation. If
the devices must nonetheless be used as described above, this device
and the other devices should be mon
itored to ensure proper
functionality.
Frequency band
a)
MHz radio service
a)
Maximum output in W
Clearance in m
Immunity test level in V/m
380 to 390
TETRA 400
1.8
0.3
27
430 to 470
GMRS 460, FRS 460
2
0.3
28
704 to 787
LTE Band 13, 17
0.2
0.3
9
800 to 960
GSM 800/900, TETRA 800,
iDEN 820, CDMA 850, LTE Band
5
2 0.3 28
1700 to 1990
GSM 1800, CDMA 1900, GSM
1900, DECT, LTE Band 1, 3, 4,
25, UMTS
2 0.3 28
2400 to 2570
Bluetooth, WLAN 802.11 b/g/n,
RFID 2450, LTE Band 7
2 0.3 17
5100 to 5800
WLAN 802.11 a/n
0.2
0.3
9
a) For some radio services, only the frequencies for the radio link from
the mobile communication device to the base station (EN: uplink) have
been included in the table.
NOTE Protective distances: The minimum distances for higher immunity
test levels must be calculated using the following equation:
E = 6/d * √P
P is the maximum output in Watt (W), d the minimum clearance in
metres (m) and E the immunity test level in Volts per metre (V/m).
General COMMENTS: These guidelines may not apply in every case.
The propagation of electromagnetic variables is influenced by
absorptions and reflections of buildings, objects and people.