ETS-Lindgren HI-3520 Microwave Monitor (Archived) - Manual (Page 21)

HI-3520 Manual Page 17
6.0 CALIBRATION
NOTE
The following is applicable only to units with
serial numbers higher than 220104. Please
contact the Holaday Industries Inc. for calibration
instructions for units with serial numbers of
220104 and lower.
6.1 General
The Model HI-3520 Radiation Badge should be calibrated
at 12 month intervals. To do so requires the use of
highly specialized test equipment and facilities, such as a
radio-frequency anechoic chamber and test cells, wherein
fields of known power density can be accurately
established. It should also be noted that to establish the
required power densities will require CW sources of 10W
or greater together with accurately calibrated test
antennae and power monitoring equipment. If facilities of
this type are not available, the unit should be returned to
General Microwave or to another qualified calibration
facility for this service.
6.2 Calibration Procedure
Set the alarm warning level to 0.2 mW/cm 2 as described
in section 3.6.
Disable the latch function as described in section 3.11.
1.0 Position the unit in an anechoic chamber. The
preferred orientation of the E-field is parallel to
the vertical axis of the unit.
2.0 At 1.4 GHz, raise the power density level at the
unit until an alarm is indicated. Record this
Archived 4/2/10