27
27
The current in load is selected or input from the keyboard in the indicator field
«CURRENT». In the course of automatic matching the voltage on the load is increased step
by step till the current in the load exceeds the value stated in the setter («CURRENT»). In this
case the voltage increase is stopped and the “Imatch” sign appears in the field «MATCHING».
If the load resistance is changed in the stable mode of generation, the power selection
program shall maintain the specified current within ±2dB by repeated automatic matching
with appropriate adjustment of power.
The incomplete automatic matching procedure can be stopped at any point by depressing of
the button « ». The first pressing in the course of automatic matching
–
«stop» of matching,
second
–
«stop» of generation. Depression in the stable mode of generation results in «stop»
of generation.
ATTENTION! ENERGY SAVING!
All manipulations with output current (power) lead to energy consumption (power supply
lifetime) change. Observe the lifetime indicator « » on the filed «POWER» to make sure
there is enough time to complete the tracing. To save the energy, work with the minimum
sufficient power in the load. Use the mode of short-time transmission if possible. The breaks
in operation help in partial replenishment of capacity. Charge the accumulators if the
situation allows. Do not bring to automatic switch off through insufficient power.
Long-term storage of accumulators in discharged condition results in complete loss of their
serviceability. Before long term storage charge the accumulators and recharge them at least
every 6 months. The temperature during storage shall be
+20…25ºС.
3.9 Operation with inductive frame antenna
To achieve the maximum intensity of the «induction», the buried utility line and antenna
frame must be located as close as possible to each other and in a single plane. Prior to
connection of the frame to the output turn off the power in the “stop” mode wi
th power
button pos.2 « » figure 3.13 or with external mechanical switch.
If the antenna is connected to the output when the power is on, the instrument switches
to “antenna” mode characterized by permanent parameters setup. The following is
indicated: mode «AC», frequency
«8928», current «0,2». After transmission is activated with the button « » pos.10 the
automatic matching results in automatic setting with optimum specified parameters. After
that if necessary the output voltage can be reduced or increased with the buttons « » and
« ». To continue transmission after power interruption restart with the button « » is
required.
3.10 Operation with the transmitting «clamp»
Содержание IFL-1210
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