™
Page 61 of 81
7 Loc3-5Tx Transmitter
NOTE
Rechargeable pack cannot be charged from a 12V DC source.
7.3 Transmitting Modes
The transmitter has three transmitting modes, which are selected automatically.
7.3.1 Induction Mode
This uses an internal antenna to induce a locating frequency onto the target pipe or cable (line). “Induction” mode is
automatically selected if no connection accessories are plugged into the “output socket”. An icon indicating “Induction” mode
shows on the display. The icon flashes when the transmitter is transmitting. In order to generate successful induction, the
transmitter should be positioned over and with the handle perpendicular to the target line.
FUSE
“Induction” mode is generally used when no access is available to make a direct connection, or a clamp connection. When
using induction it is very likely that 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 inuence the accuracy of the location, depth and current
measurements. “Induction” mode is also the least ecient way of applying the transmitting signal to the target line. The distance
located with “Induction” mode is generally much less than that achieved with a direct connection or clamp connection.
“Induction” mode generally works better in higher frequencies. The advantage of induction is that no access is required
to “connect” the transmitter, making it a very quick process. The antennas on the transmitter are tuned to induce specific
frequencies or range of frequencies. Therefore only a limited number of frequencies can be selected in “Induction” mode.
All the frequencies in favorite frequencies mode that are higher than 8 kHz can be selected by pressing “f” pushbutton in main
display. Multiple induction frequencies are available based on the user selection. See section 1.4.2 for adding and removing
frequency from the favorite frequencies list.
NOTE
For accurate location and depth measurement the locator receiver should be used no closer than 50ft
(15m) from the transmitter.
7.3.2 Direct Connection Mode
By plugging in a connection lead to the output socket, “Direct connection” mode is selected. An icon conrming this is shown on
the display. The wave in the icon uctuate when the transmitter is transmitting. The direct connection lead consists of two cables,
one (red clip) must be connected to the conductor being located, the other (black clip) to a suitable ground (a ground stake is
provided with the transmitter). An auxiliary ground lead is also supplied. If the auxiliary ground lead is used, the ground clip of
the connection lead (black clip) is attached to one end of the auxiliary ground lead.
A good connection is indicated by a change in beep rate from the speaker and the current reading on the display.
To Next Page
Loading...
Need help?
General
