Operations Manual Perdix
Manual DocRev B
28
Gradient Factor:
The deco conservatism value when the deco model is set to GF.
The low and high gradient factors control the conservatism of the
Bühlmann GF algorithm. See “Clearing up the Confusion About
Deep Stops” by Erik Baker.
VPM-B (and VPM-BG):
The deco conservatism value when the deco model is set to
VPM-B.
If the deco model is VPM-B/GFS, also displays the gradient factor
for surfacing.
Pressure:
The pressure in millibars. Two values are shown, the surface (surf)
pressure and the current (now) pressure.
The current pressure is only shown on the surface.
The surface pressure is set when the Perdix is turned on. If the
Altitude setting is set to SeaLvl, then surface pressure is always
1013 millibars.
Temperature:
The current temperature in degrees Fahrenheit (when depth in
feet) or degrees Celsius (when depth in meters).
Battery:
The Perdix’s internal battery voltage. Displays in Yellow when the
battery is low and needs replacement. Displays in Flashing Red
when the battery is critically low and must be replaced as soon as
possible. Also shows battery type.
Date and Time:
In the format dd-mon-yy
12 or 24 hour clock time.
Serial Number & Version:
Each Perdix has a unique serial number.
The version number indicates the available features. The last two
numbers are the firmware version (V29 in this image).
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