Spartan 821/721 Manual
Dosimetry Settings
30
3.7 Dosimetry Settings
Tap to expand the
Dosimetry
card to add and remove dosimeters. Tapping the
Selected
Dosimeter
, you can choose which of the four dosimeters to enable, disable and modify.
Each dosimeter has the following options. While disabled, the meter will not display the
dosimeter card. To see a virtual dosimeter on the meter ensure that it is enabled in these
settings. See
•
Dosimeter # Enable
Where
#
is the currently selected dosimeter. When enabled, the other options
will become visible to configure this dosimeter. The meter will record the
necessary details for compliance with the chosen standard when selecting the
associated
Configuration
. The remaining fields will be disabled.
You may select a
Custom
configuration that will allow you to change the other
fields. When you choose a Configuration other than Custom, remaining values
on the Dosimetry card are supplied according to the standards described in
The 721/821 Virtual Dosimeters use a “Slow” exponential detector.
FIGURE 3-5
Custom Dosimeter
•
Criterion (dB)
•
Title
You may set the name of the custom
configuration. G4 and LD Atlas displays this in the
data file view under the
Summary
tab for
Virtual
Dosimeters
.
•
Mode
Choose between
Dose
and
ISO
modes.
•
Exchange Rate
Choose from 3 dB to 6 dB. This value is only used
when you choose Dose from the Mode selection.
The Exchange Rate defines the ratio of exposure
time to level. For example, if you choose 5 dB for
this setting, and the sound field is constant, this
means that an increase of 5 dB in the Time-
Weighted Average (TWA) would result in the dose
being doubled. A decrease of 5 dB in the TWA
would result in the dose being 50% less
