Gtr Mode; Units; T1/T2 Setup; 5�2� T1/T2 Setup - PERDIX SHEARWATER Operating Instructions Manual

Operating Instructions

GTR Mode

Gas Time Remaining (GTR) is the time in minutes that can
be spent at the current depth and SAC rate until a direct
ascent to the surface at a rate of 33 feet/min (10 m/min)
would result in surfacing with the reserve pressure� The
SAC rate is averaged over the last two minutes of diving for
calculating GTR�
GTR can only be based on one tank� The Surface Air
Consumption (SAC) measurements are also based on the
tank selected for GTR calculations�
GTR Mode Description
Setting
Off GTR is disabled� SAC is also
disabled�
T1 Transmitter (tank) 1 is used for GTR
and SAC calculations�
T2 Transmitter (tank) 2 is used for GTR
and SAC calculations�
The GTR display is described in Section 6.4. GTR Display.
Read more on how GTR is calculated in Section 7.2. GTR
calculations.

Units

Units can be set to pounds per square inch (PSI) or Bar�

T1/T2 Setup

These menu items show the serial number of the currently
paired transmitters�
Selecting edit (right button) while these menu items are
selected will open the next menu page for T1/T2 Setup�
Page 10
5.2. T1/T2 Setup
The T1/T2 Setup menu pages allow setup that is
(FIGURE 12)
individual to each transmitter/tank�
T1 Setup
T1 Serial#
Rated
Reserve
Unpair
Change
The T1/T2 Setup menu
FIGURE 12

Serial #

Every transmitter has a unique 6-digit serial number
� This number is etched onto the side of the transmitter�
13)
Enter the serial number to pair the transmitter to T1� This
number only needs to be entered once� Like all settings, it
is stored in permanent memory and will be retained across
power cycles and battery changes�
Each transmitter is marked with a unique serial
FIGURE 13
number
123456
3000 PSI
0700 PSI
Save
(FIGURE
RevA