<inter-immunity-level>
The interference strength level is specified (as defined in the definition, see [Interference strength levels during the measurement in the stripline or in the TEM cell .]). The corresponding field strength can be taken from the respective standard.
Figure 44: Structure of interference strength level
During the measurements in the stripline and in the TEM cell the given function states have to be observed up to the following limit values for field strength, which are determined according to frequency band, DUT and measuring method. The limit values are effective values of the unmodulated carrier.
Example for content:
Interference strength level 1 Measuring method: TEM cell. [(Assignment);DIN 40839-4;;all;])

Interference strength levels during the measurement in the stripline or in the TEM cell .
Denomination
Abbreviation
Min
Type
Max
Abs
Tol
Unit
 
Field strength
E
     
25
 
V/m
 
Interference strength level 2 Measuring method: TEM cell

Interference strength levels during the measurement in the stripline or in the TEM cell (assignment
Denomination
Abbreviation
Min
Type
Max
Abs
Tol
Unit
 
Field strength
E
     
50
 
V/m
 
Interference strength level 3 Measuring method: TEM cell

Interference strength levels during the measurement in the stripline or in the TEM cell (assignment
Denomination
Abbreviation
Min
Type
Max
Abs
Tol
Unit
 
Field strength
E
     
100
 
V/m
 
During the measurements with current supply, the given function states have to be observed up to the following limit values for power on the wiring harness, which are determined according to frequency band and DUT. The limit values are valid for the unmodulated carrier.
Example for content:
Interference strength level 1 Measuring method: Current supply

Interference strength levels during the measurement in the stripline or in the TEM cell (assignment DIN 40839, part 4).
Denomination
Abbreviation
Min
Type
Max
Abs
Tol
Unit
 
Power CW signal
P
     
20
 
dBm
 
Interference strength level 2 Measuring method: Current supply

Interference strength levels during the measurement in the stripline or in the TEM cell (assignment
Denomination
Abbreviation
Min
Type
Max
Abs
Tol
Unit
 
Power CW signal
P
     
25
 
dBm
 
Interference strength 3 Measuring method: Current supply

Interference strength levels during the measurement in the stripline or in the TEM cell (assignment
Denomination
Abbreviation
Min
Type
Max
Abs
Tol
Unit
 
Power CW signal
P
     
30
 
dBm
 
Additionally, further user-defined or in-house standard specific interference strength levels can be specified.