Test Setups - HP 11941A Operation Note

HP 11941 OPERATION NOTE
DUAL LOOPS
Figure
2,
Magnetic Field Orientation for Maximum Coupling
Table 2. Characteristic Magnetic Field Strengths
Frequency
(MHz)
Input Power
(Into
son)
Magnetic Field Strength
(fi), dB (pA/m)
0.009 0 dBm 122
0.100 0 dBm 120
1 120
10
0 dBm
no
30 OdBm 101
3*11. Test Setups
3*12. The HP 11941A operates as either a localized magnetic field probe or localized magnetic field source.
The following paragraphs describe different applications and test setups for the probe. Table 3 lists the
recomrhended test setup equipment used in these examples. Any equipment that satisfies the critical
specifications listed in table 3 may be substituted for the recommended equipment When used as a probe,
be sure to add the antenna factors and cable losses to the signal levels indicated on the spectrum analyzer.
If a preamplifier is used to increase measurement sensitivity, subtract its gain from the displayed signal
level
I WARNING I
The dielectric material on the tip of the probe has a characteristic
breakdown voltage of 1 kV. To prevent damage to the probe and/or
personal Injury to the user, the probe should not be used where a
potential of over 1 kV Is available.
5