DEVELOPMENT, MANUFACTURING AND SUPPLY OF INSTRUMENTATION
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12.2 Settings
12.2.1
Open the cover. Turn on the device by pushing POWER « » button.
12.2.2 After switching on of the device “on default” the indicator POWER SUPPLY VOLTAGE
«
» glows green. The device is in the “stop” mode. The pre-set of the modes and parameters
values should be done.
12.2.3 If it is necessary to change the indicated mode or parameter it can be done by sequenced
presses of the CHOICE «
» button.
In this case (“along the loop” and “counterclockwise”) in the “Internal parameters field” and
“Modes field” one can choose reference and variable values of the modes and parameters
indicated in the “Digital field”. The chosen mode and parameter marked by the flash of the relevant
indicator.
The sequence of the indications in the functional fields.
1)
«
» - POWER SUPPLY VOLTAGE in volts (reference value,
green
glow);
2)
« » - active «ANTENNA» mode and the type of connected transmitted antenna (depends on
which accessory is connected to the «OUTPUT» connector:
3)
«
» - active / non-active «MODULATION» and the type of the special signal form (should
be chosen in the “Digital field” by MORE/ LESS «
» buttons):
- lack of glow – no modulation (continuous signal «
Co
» «of standard» sin form);
-
green
glow – pulse modulation mode «
Pu
»;
-
yellow
glow – dual-frequency modulation mode «
2F
».
4)
«
f,kHz
» - frequency of the generated signal in kilohertz (
green
glow) is chosen in the “Digital
field by LESS/ MORE «
» buttons:
- for loads “clips”or “clamp” - 512Hz «0.5» / 1024Hz «1.0» / 8192Hz «8.2» / 32768Hz «33»
- for «antenna» modes «In» or «An» - 8192Hz «8.2» / 32768Hz «33».
The generation frequency is set if possible lower but according to recommendations of the
chosen “utility locating method” and proceed from the premise that the lower the frequency:
- the less re-inducing to the nearby facilities, the less the leakage of the “revocable” current, the
more transmission distance.
- the lower sensitivity of the utility locators (more revocable current required and consequently
power of transmitter) the more difficult to overcome the utility conductivity flaws.
12.3 Clips
(standard accessory for the “contact” connection)
12.3.1 If “clips”\ earrings are connected to the “OUTPUT” the device is ready for “contact” load
connection. The internal transmitting inductor “In”
is not connected (“ANTENNA” mode indicator «
»
does not glow).
12.3.2 To connect one clip to the input of the
examined utility and the second one to the earthing
rod (or relevant earthing) at maximum distance from
the utility. The opposite end of the examined utility
should be earthed.
12.3.3 By pressing the button START/STOP «
» is initiated the automatic adjustment process with
the l “occasional” resistance load. And along with this the output signal voltage incrementally
increases up to the moment when the specific load current value is reached (or exceeded) (0.2A
at frequencies 512Hz “0.5”/ 1024Hz “1.0” / “2F” or 0.1A at frequencies 8192Hz “8.2” / 32768Hz
“33”). If the load resistance is too high for reaching these values of the output current then the
maximum possible output signal voltage is produced.
Содержание AP-019.1
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