FX 12/19 (FXL12/19) dual-frequency transmitter, as well as other multi-frequency transmitters for location systems, is effective in high industrial interference environment. It operates both in the range of 12 kHz and 19 kHz. Instructions describe how to set the frequency of optimum transmission and to adjust F2 location system and the transmitter.
Adjustment of location. How to set optimum transmission frequency 12 kHz or 19 kHz
To accomplish this the central icon at the bottom of the display Mode menu should have the image similar to a round speedometer scale. In case the icon shows the image similar to the school protractor, you have an “old” version of the single-frequency F2 location operating only in the range of 12 kHz frequency.
In the case of the “new” dual-frequency F2 location, set the operating frequency of 12 kHz repeatedly clicking the button on the “speedometer” icon, then, by pressing and holding the button, go to the next page of the menu and select with multiple clicking the right icon depicting “12kHz” and “19 kHz” transmitters at the bottom of the screen. Again, by pressing and holding the button, go to the menu listing the available transmitters. Having selected by multiple clicking the icon with the “19 kHz” transmitter (top right), press and hold the button to select the operating mode of the FX19 battery-operated transmitter.
F2 location menu sequence to set FX19 operation mode
Go along the drilling area (without the transmitter!) from the beginning till the end and mark the places with the highest level of interference (bottom right-side numbers on the display in the navigation mode shown alongside with indications of the location of the transmitter, roll, pitch and temperature).
Switch the location to FX12 transmitter mode (“12 kHz” operation frequency, as described in art. 2), go in the opposite direction along the drilling route and again mark the places with the highest level of interference.
Compare the interference levels obtained at the frequency of 12 kHz and 19 kHz, select and install the location frequency with the lower level of interference, for example, 19 kHz.
F2 location menu sequence to set FX12 operation mode
Set the required FX12/19 frequency of the transmitter to be paired with the location. The frequency is selected at the first start of the transmitter (when installing batteries into the battery compartment) and depends on the transmitter’s head position.
If the transmitter is pointed down (has a pitch value over minus 100%), after installing the batteries and jolt ramming/rotating of the transmitter, in about five seconds the transmitter will operate at the frequency of 12 kHz.
If the same is done when installing the batteries with the transmitter pointing up (has a pitch value over plus 100%), then, after about five seconds the transmitter will operate at the frequency of 19 kHz.
Choice of FX12/19 frequency depends on transmitter’s positionin
After installing the batteries and jolt ramming/rotating of the transmitter, make sure you wait for the location display signal to appear. The signal will be displayed in 5 seconds — after transmitter’s initialization. Then, you may move the transmitter as you wish.
Changing the operating frequency of the transmitter requires a pause of 15 seconds without batteries in the power-off mode to completely discharge the transmitter and get ready to the mode switch. Otherwise, the frequency may not change.
If the pitch angle of the transmitter when switching on (battery installation) does not go over “minus 100 % — plus 100%”, the value of the set frequency does not change when you replace the batteries.
For example, to select the 19kHz frequency (art. 1-4) you need to install the batteries from below while the transmitter`s head is pointed up. In 3-4 seconds you will see the increase in the level of signal on the location display, after which you can carry out all the procedures of installing the transmitter with the drill head and system calibration.