Essilor Instruments AKR 800, Руководство пользователя, Страница: 66 / 81

c. Radiofrequency wireless communications
T
EST FREQUENCY
(MH
Z
)
B
AND
A (MH
Z
) S
ERVICE
A M
ODULATION
B
M
AX POWER
(W)
D
ISTANCE
(
M
)
I
MMUNITY TEST
LEVEL
(V/
M
)
C
OMPLIANCE LEVEL
385 380 - 390 TETRA400
Pulse
modulation
b
18Hz
1.8 0.3 27 27
450 430 - 470
GMRS460,
FRS460
FM ±5kHz
deviation 1kHz
sine
2 0.3 28 28
710
704 - 787
LTE Band 13,
17
Pulse
modulation
b
217Hz
0.2 0.3 9 9 745
780
810
800 - 960
GSM800/900,
TETRA800,
iDEN820,
CDMA850,
LTE Band 5
Pulse
modulation
b
18Hz
2 0.3 28 28 870
930
1720
1700 - 1990
GSM1800
；
CDMA1900 ；
GSM1900
；
DECT
；
LTE Band 1,
3, 4, 25
；
UMTS
Pulse
modulation
b
217Hz
2 0.3 28 28 1845
1970
2450 2400 - 2570
Bluetooth,
WLAN,
802.11b/g/n,
FRID2450,
LTE Band 7
Pulse
modulation
b
217Hz
2 0.3 28 28
5240
5100 - 5800
WLAN
802.11a/n
Pulse
modulation
b
217Hz
0.2 0.3 9 9 5500
5785
a
For some services, only the uplink frequencies are included.
b
The carrier shall be modulated using a 50% duty cycle square wave signal.
U
SER MANUAL
> S
AFETY CONSIDERATION
AKR800 - Auto Kerato Refractometer > V4 - 05-2022 - CE0459 66