Alcad FSM-530, Руководство пользователя

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21.12 Environment
LCD display:
TFT, colour, 7.0 inches (16/9°), with backlight
Operating temperature:
from -5°C to +45°C
Storage temperature: from -10°C to +60°C
EMC and safety:
CE marked and compliant
NF-EN 61326 July 1997 + A1 October 98 + A2 Edit September 2001
EN 55022 A2 edit 2003 class B autonomous device
Immunity according to EN 61326-1 2006
NF-EN 61010-1 June 2001
Dimensions and weight:
about 210 x 297 x 90 mm
2.1 kg (with battery)
21.13 Accessories
The appliance is delivered with: a bag, a battery, a main adapter, and a user manual.
21.14 V, dBµV, dBmV and dBm conversion
dBµV (dBmV) is a logarithmic ratio between a measured voltage U
d
and a reference voltage U
r
.
The reference voltage is Ur = 1 µV (1 mV)
N = 20 log (U
d
/U
r
)
dBm is a logarithmic ratio between a measured power P
d
and a reference power P
r
.
The reference power is Pr = 1 mW into 75 ohms.
N = 10 log (P
d
/P
r
) with Pd = Ud
2
/ 75
U
d
= 1 µV N = 0 dBµV N = - 60 dBmV N = -108.75 dBm
U
d
= 1 mV N = 60 dBµV N = 0 dBmV N = -48.75 dBm
U
d
= 1 V N = 120 dBµV N = 60 dBmV N = 11.25 dBm