User manual

Poseidon MKVI User Manual
Chapter 2
Page 40
If the system is powered-up by inserting the battery, the system continues directly to the “all-
segments” screen (Figure 2-4), without the need to complete the power-up conrmation routine.
The Poseidon MKVI electronics system conducts 55 automated and semi-automated tests
during the pre-dive routine. This procedure veries a wide variety of parameters, and takes
about 3 minutes to complete. A full description of all of the tests is included in Appendix 1 of
this Manual, but a general description – including tests that require intervention – is included here.
Figure 2-4. The Primary Display showing
all LCD elements.
DANGER:
Do not attempt to breathe on the Poseidon MKVI during the
automated pre-dive routine. Oxygen control is disabled during
portions of this routine, so doing so involves a risk of hypoxia. Do
not attempt to conduct a dive until the system has successfully
completed the pre-dive routine.
Power-up self test (test 1 - 38)
The rst series of tests (numbers 1–38) are referred to as Power-Up Self-Tests (or PSTs). They
are internal checks on the functionality of all of the various sensors, computers, actuators, and
alarm systems in the Poseidon MkVI. You will see and hear the rig as it tests the HUD light and
vibrator, and the battery lights and speaker systems. Similarly, you may also hear the rig
opening and closing some of the gas control valves. A very brief summary of these PSTs is as
follows:
• Test 1: Conrms the main data logger is functional
• Tests 2–9: verify the ROM, RAM and EEPROM function in all four processors
Test numbers 1–16 are conducted with the backlight off, allowing more precise measurement
of the power consumption of individual components, such as the various alarms and solenoid
valves. Test 17 checks the power consumption of the backlight (Figure 2-5); and the backlight
remains on for the remainder of the pre-dive tests. The test number is displayed on the left side
of the screen, preceeded by a lower-case “t” (as shown in Figure 2-5). While the test is running,
a “spinning wheel” is displayed on the right side of the display, where the remaining dive time
is normally displayed. This “spinning wheel” is represented by a “0” character in the right-most
position, missing one of the segments. The missing segment rotates positions around the “0”
in a clockwise direction. Different tests require different amounts of time to complete; some
require less than one second, others require 4–12 seconds to complete. Certain tests that
involve some action by the diver allow for up to 2 minutes to complete, if necessary.
• Test 14: Conrms the battery data logger is functional
• Test 15: Conrms the rmware version is consistent across all four processors
• Test 16: Conrms the power consumption calculations are functioning properly
• Tests 17–20: Conrm the power-draw of the backlight, solenoid valves, and alarms
are correct
• Test 22: Vibrator current test
• Tests 24-27: Solenoid current test
• Test 29: Speaker current test
• Tests 30-31: Cylinder HP sensor validation
• Tests 34-35: PO
2
sensor validation HW test
• Test 38: Depth/temperature sensor validation
Figure 2-5. Test 17 (Backlight Power
consumption), displaying test number on the
left and the “spinning wheel” on the right.
Figure 2-6. Test 17 failure, with ashing test
number and error code.
Although there are 55 tests, the display only
shows 36 of them because several test numbers
are reserved for future tests. Note that if the
depth is greater than zero, the system automati-
cally shifts into Dive Mode, and alerts the diver
to abort the dive due to a failure to complete the
pre-dive routine.