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.
|