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LANGER
DE-01728 Bannewitz
mail@langer-emv.de
EMV-Technik
www.langer-emv.com
2.7
EPM 02 and BPM 02 field meters
The magnetic or electric field strength generated by the field sources at the position of the test IC
can be measured with the BPM 02 and EPM 02 field meters. To do so, a field meter has to be
inserted in the GND 25 ground plane using the GNDA 02 ground adapter. To calculate the
magnetic flux density and the electric field strength based on the voltage u
output of the respective field meter, the conversion factors defined in Table 3 are used.
Figure 11 BPM 02 dE/dt field meter
BPM 02
B ̇ = K ∙ u
out
T
K = 122 dB (
)
V ∙ s
⁄ ) B ̇
B = ( 1 ω
B = B ̇ − 20 log
( ω )
10
Table 3 Conversion factors of the BPM 02 und EPM 02 field meters
P1401/P1501 and P1402/P1502 set
Figure 12 EPM 02 dB/dt field meter
EPM 02
E ̇ = K ∙ u
out
K = 251 dB (
cm ∙ s
⁄ ) E ̇
E = ( 1 ω
�� = E ̇ − 20 ������
- 12 -
measured at the
out
1
)
( �� )
10
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