ETS-Lindgren HI-1501 Microwave Oven Survey Meter - Manual (Page 14)

Page — 6 HI n 1501 Manual
Parameter Error (dB)
1 mW/cm 2
Calibration - Precision
- Accuracy
+0.42, -0.16
±0.09
Nonlinearity and AM response ±0.09
Near Field vs. Far Field ±0.29
Receiving Pattern -0.11
Temperature Response ±0.17
Frequency Response * ±0.04
Polarization * ±0.21
RFI * ±0.04
Drift * ±0.02
Total +1.27 / -1.12
* Errors combined in RMS manner
Calibration Method
Each meter is calibrated by placing the probe in a CW
(continuous wave) 2450 MHZ electromagnetic field
generated by a crystal controlled solid state source. The
source feeds an anechoic chamber through a section of
waveguide terminating in a slot radiator. Calibration is
performed at a level of 1 mW/cm 2 and a standard
temperature of 75 / F.
The calibration is also checked at 5 mW/cm 2 . The
accuracy of the field is determined by comparing with an
LCR (local calibration reference) which is traceable to
NIST (National Institute of Standards and Technology