Extech Instruments 480836 Guide de l'utilisateur télécharger pdf (Page 8)

480836-en-EU_V5.3 09/14

Alarm limit value (ALM)

The alarm limit value is used to monitor the display value and control the alarm indication

function. The alarm limit value can be edited in the displayed V/m unit; the smallest value that

can be set is 0.05V/m.

NOTE: Alarm limit function can only be used for the total three axial measurement value.

Calibration Factor (CAL)

The calibration factor “CAL” corrects for variances in the frequency response of the field

sensor. When a known RF calibration source is not available for precise calibration, a

calibration factor of 1.00 is sufficient for most applications.

E-Field typically calibration data:

Frequency CAL

50MHz 3.16

100MHz 2.46

200MHz 2.01

300MHz 1.91

433MHz 0.55

500MHz 0.37

600MHz 2.41

700MHz 4.63

800MHz 4.21

900MHz 4.47

1GHz 2.80

1.2GHz 1.38

1.4GHz 3.26

1.6GHz 1.25

1.8GHz 1.87

2GHz 1.67

2.2GHz 1.95

2.45GHz 1.93

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 16 17

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Extech Instruments 480836 Guide de l'utilisateur Page 8