Vivax Metrotech 4.04.000170, User Handbook Manual

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5 The Loc3 Series Transmitters
5.7.3 Induction Mode – 5-Watt and 10-Watt Transmitters Only
The 5-watt and 10-watt transmitters use an internal antenna to induce a locating frequency onto the target utility. The Induction
mode is automatically selected if no connection accessories are plugged into the “output socket.” An icon indicating the “Induction”
mode will show on the display. The icon flashes when the transmitter is transmitting. The transmitter should be positioned over
and with the handle in line with the target line to generate successful induction.
FUSE
“Induction” mode is generally used when no access is available to make a direct connection or a clamp connection. When
using induction, likely, the signal being induced onto the target line will also be induced onto other lines in the area and onto
above-ground features such as wire fences. This can influence the accuracy of the location, depth, and current measurements.
“Induction” mode is also the least efficient way of applying the transmitting signal to the target line. The distance located with the
“Induction” mode is generally much less than that achieved with a direct connection or clamp connection. The “Induction” mode
is only available from 8kHz and above.
Induction frequencies are available based on the user selection. See section 5.8.2 for information relating to the “Most Used
Frequencies (Frequency Selection) Feature” to add and remove frequencies from the favorite frequencies list.
NOTE
For accurate location and depth measurement, the locator receiver should be used no closer than 66ft
(20m)
from the transmitter.
5.8 Transmitter Frequencies
The Loc3 series transmitters are supplied with a predefined set of transmitting frequencies. The factory will preset the most
commonly used frequencies. Additional frequencies are available to be selected in the frequencies list; see section 5.8.2.
5.8.1 Frequencies and Maximum Power Output
5-Watt and 10-Watt Transmitters
Frequencies power outputs Loc3-5Tx Loc3-10Tx
Direct connection 10-watt: - 98Hz-45kHz
Direct connection 5-watt: 98Hz-45kHz -
Direct connection 1-watt: >45kHz-200kHz >45kHz- 200kHz
Clamp Connection: Available frequencies between 8.19 kHz and 200 kHz
Induction Frequency: Multiple induction frequencies between 8.19kHz and 200kHz
200kHz
131kHz
83.1kHz
65.5kHz
32.8kHz
8.19kHz
Pushbutton Pushbutton