Operating instructions
4point light 10W (V 4.58)
Page 21 of 130
G
M
L
Important data
Charging
Via external voltage input (10 - 15 V / max. 1.5 A), reverse
polarity proof
Charging time
About 4 h
Operating time
Minimum 1.5 h at maximum output power, under normal use
about 20 - 30 h, in standby mode approximately 50 h
Terminals
12 V, 0 V, 2 x 4 mm
If left unpowered for a long period, it may be necessary to start the instrument by applying an
external voltage source. In this case it may take several minutes until the internal buffer capacitor
is sufficiently charged to resume normal operation.
The external voltage input is also used as trigger input in mapping mode.
6.2 Automatic charging
An automatic charging device is integrated in the instrument.
If
“
Quick charge
” was
enabled
under "Settings" "Device", the internal batteries can be
recharged as follows:
1. Connect the instrument via the 0 V/+12 V terminals to an external 12 V voltage
source
The instrument automatically switches on. The internal batteries are loaded and the
battery voltage is displayed. When charging has finished the instrument
automatically switches off.
2. Press [7] to change to the measurement mode while charging is going on.
The instrument changes to the main menu and is ready for operation. Charging goes
on. When charging has finished, the instrument remains switched on.
Quick charge terminates as soon as the battery voltage has peaked and decreased again
by 5 - 50 mV (preset DeltaU value). DeltaU is set under:
➔
8.10 Settings, page 87
If “
Quick charge
” was
disabled
under "Settings" "Device", the internal charging circuitry
will buffer the batteries with a constant voltage of about 5.5 V.
6.3 Operating modes
The instrument will acquire
resistivity data
in
five different modes
:
▪
V
ertical
E
lectrical
S
ounding (
VES
)
The VES-mode comprises the classical 4-electrode resistivity soundings like
Schlumberger, Wenner, Dipole-Dipole and Pole-Pole
▪
MAP
ping (
MAP
)
