<inter-rad-lab-test>
Within the test in laboratory, the interference strength of the DUT with respect to interferences by radiation is tested. In case of an interference strength test, the behaviour of the DUT is tested by submitting it to different field strengths. The following specifications can be made for an interference strength test:
 
measuring method (<mea-method-ref>)
 
Interference strength level (<inter-immunity-level-ref>)
 
frequency bands (<frequency-band-refs>)
 
modulation (<modulation-ref>)
Apart from AM, also sampling and FM can be defined.
 
Operating state (<oper-mode-refs>)
The operating state defines the state of the system at which the test is performed. If the test is to be performed with various operating states, these can be grouped.
 
Function state (<function-state-ref>)
The assignment of a function state to the test is accomplished by a code letter (A...E).
 
Fault description (<failure-desc>)
The failure mode of the system will be described in textual form, in addition to the function state (if it is not equal to A).
 
Additional specifications (<add-info>)
Apart from the a.m. specifications, it is always possible to give additional specifications for a test. These include, e.g., a test temperature which differs from general specifications, the test set-up, the description of the coupling clamp and further specifications which have not been defined yet.
Figure 47: Structure of a laboratory test
Example for content:

Description example for interference by radiation, test in laboratory
Measuring method
Interference strength level
Frequency band
Modulation
Operating states
Function state
Fault description
 
TEM cell
5
I
80% 1kHz
Idle running
Full load
A
   
TEM cell
4
II
III
80% 1kHz
Idle running
Full load
A
   
TEM cell
3
IV
V
80% 1kHz
Idle running
Full load
A
   
Here, for every measuring method, the test set-up and the settings of measuring instruments can be described by means of text, tables and graphics.