4
L
OW
B
ATTERY
I
NDICATION
The battery potential is internally monitored and if it falls below 1.1 Volts, the display will
indicate a low battery by switching off twice, briefly, every 6 seconds. This battery low state will
not be cleared until the battery voltage is raised above 1.2 Volts by recharging or replacement.
P
OWER
U
P
I
NFORMATION
S
EQUENCE
Ensure that the display face is exposed to daylight or artificial light.
Activate the Jupiter Subsea Display by fitting the RS232 Interface Cable or 5 way Power Enable
connector supplied to Conn 1.
On power up the display will:-
Power Up Information Sequence
Description
2 Digit Display Shows
4 Digit Display Shows
1
Lamp test:
All the segments of the display are illuminated
to assure the user that the display is fully operational and
therefore any information shown cannot be misinterpreted by
misrepresentation of the characters due to a faulty segment.
2
Display serial number:
The serial number of the unit is a
simple 8-digit index with no decimal places, and is displayed
with the prefixes ‘J.’ and ‘I.’ as shown.
eg. J.2845 and I.1234, = 28451234
No Equivalent
Followed by:-
3
Display software version:
The version of the software the
unit is programmed with, is a simple 4-digit index with no
decimal places, and is displayed with the prefix ‘V.’ as shown.
No Equivalent
4
Display battery voltage:
Full – 1.4V, ½ - 1.2V, Low – 1.0V.
The present potential on the battery is displayed in Volts
with 3 decimal places, and is displayed with the prefix ‘b.’ as
shown.
No Equivalent
5
Display RS232 baud rate
: The present setting of the baud
rate is shown together with the prefix ‘R.’ as shown.
No Equivalent
6
Display Function:
Normal Display:
After the power sequence, the display is
shown. Note that the display has been reset to zero, however
the system configuration is exactly as previously configured.
To deactivate the system remove the RS232 Interface Cable or Power Enable connector from
Conn 1.
Factory Default Conditions
All parameters and options as described in the Command Summary, (see RS232 Console User
Commands), will be in the state as if the command ‘reset’ has been executed.
The Baud rate will be set to 19200 bits per second.
D
ISPLAY
O
PERATION
Light Sensing
In order to conserve battery charge and therefore maximize operational time before a recharge is
required, the system has a light sensor which if enabled is used to detect the presence of light. If
there is little or no ambient illumination the system enters a very low power mode where the
display is switched off. However, the unit will still register any changes on the counter inputs at
full specified speed.
The time lapse between loss of illumination and the display switching off, can be set by the user
at the command Console interface, with the ‘dwelltime’ command. Type ‘dwelltime 0500’, for
example, this will give a time lapse of 500 seconds between loss of illumination and the display
switching off. The value is always entered as a 4 figure number in seconds. The maximum value
that can be entered is 1000.
