6 Functions Common to More Than One Operating Mode
Narda SRM-3006 89
6.8 Changing the displayed units
Safety Evaluation • Display • Unit
Spectrum • Display • Unit
Level Recorder • Display • Unit
UMTS • Display • Unit
Scope • Display • Unit
The following power and voltage units can be selected when there is no
antenna connected or selected:
The following units can be selected when an antenna is connected or
selected:
Table 24: Units that can be selected (without antenna)
Units Description
dBm Power level, referred to 1 mW
dBV Voltage level, referred to 1 V
dBmV Voltage level, referred to 1 mV
dBµV Voltage level, referred to 1 µV
Table 25: Units that can be selected (with antenna)
Units Measured quantity Description
V/m Electric field strength Converted using the characteristic
impedance of a vacuum Z
0
= 377 Ω
unless measured directly.
A/m Magnetic field strength
dBV/m Electric field strength Expressed as a logarithmic value
referred to 1 V/m.
dBmV/m Electric field strength Expressed as a logarithmic value
referred to 1 mV/m.
dBµV/m Electric field strength Expressed as a logarithmic value
referred to 1 µV/m.
dBA/m Magnetic field strength Expressed as a logarithmic value
referred to 1 A/m.
W/m
2
Power density Calculated using the characteristic
impedance of a vacuum Z
0
= 377 Ω.
mW/cm
2
Power density
% % of limit value defined in a selected human safety standard
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