Leaders in Pipeline Survey Systems
2 -7
OPERATING MANUAL
PART 1 –OPERATION
AVW 150203 –2010O&MPt1-Sec2.DOC
General Guidance Notes on the batteries used in the C-SCAN System.
GGN 1 C-Scan Signal Generator (SG)
The power supply for the SG can be augmented by connecting an external 12 volt vehicle type
battery via the connecting cables (black and red leads with fuses and ‘crocodile’ clips) supplied
and stored in the lid of the SG casing.
The lead is plugged into the dual purpose charging/external power supply port on the front of the
SG casing and the red and black clips attached to the appropriate polarity post connectors of the
vehicle battery. When it is turned on, the SG will ‘recognize’ that external power is available and
will utilize this source until the battery loses its charge. If the external power source is exhausted,
the SG will automatically switch over to its internal batteries thus ensuring that no break occurs in
the survey process.
The batteries in the SG are of the completely sealed, non-spillable, lead-acid type. They must be
kept charged to ensure a long life. If the SG is to be inactive for any length of time –e.g in
excess of one month -it will be necessary to place the unit on a booster charge to maintain its
power level. To do this, attach the battery charger and press the I/O button to begin the charging
process. The unit will turn itself off when a full charge is accomplished.
The unit does not trickle-charge. It will be necessary to repeat the booster charging process more
than once if the unit is inactive for longer periods: every 30 days will be sufficient.
GGN 2 C-Scan Detector Unit (DU)
The Detector unit uses six (6) D-cell batteries. They can be rechargeable NiCaD or Alkaline
batteries. NEVER mix battery types. If the installed NiCad batteries run low in the field during a
survey, they can be changed in the field without affecting data already stored. The replacement
batteries can be of either type but all in the group of 6 must be of the SAME type.
Never attempt to re-charge Alkaline batteries in the DU or damage will result.
The DU draws a small amount of current from the batteries when it is switched off at the
Control/Display Panel I/O switch, but with the main power switch left ON. If left for a long period
in this state the power in the batteries eventually will be reduced to zero. If the unit is to be
inactive for a period of time, either remove the batteries completely OR switch the Main Power
Switch to Off. If the unit is to be shipped or stored it is recommended that the batteries be
removed for safety reasons.
Leaving Alkaline batteries in a stored DU -even with the Main Power Switch Off -may result in
battery corruption and leakage, causing internal damage to the DU.
Remember, if the batteries are removed and/or the Main Power Switch is turned Off for any
