User's Manual

Receiver
8. Toggle right to the 1 Pt. Cal. menu item, and click the trigger.
9. Select High Fre Cal, and click the trigger.
10. Toggle to select Y for yes, and click the trigger.
11. Follow the instructions on the display, and click the trigger appropriately.
12. To exit the calibration function and return to the main menu, push the toggle down two times.
13. To access the locate mode, push the toggle to the left until Locate is selected or push the toggle
down one time, and then click the trigger.
14. Verify that the depth reading at 10 ft (3 m) reads 10 ft (3 m); this requires you to go into locate mode
and then hold in the trigger. Check the depth readings in two other locations (e.g., 5 ft/1.5 m and
15 ft/4.6 m).
1-Point Calibration for Eclipse Dual-Frequency Transmitter
To calibrate the Eclipse dual-frequency transmitter (lavender tube), you must first understand how this
type of transmitter works.
The dual-frequency transmitter can be set to transmit in two different modes—dual-frequency mode
(transmitting at 1.5 kHz and 12 kHz) or single-frequency mode (transmitting at 12 kHz). When the dual-
frequency transmitter is started up in dual mode, the transmitter is actually sending signals at both
frequencies. The receiver must be set to detect the correct signal or signals being transmitted by the
transmitter.
Each frequency mode offers specific advantages. The dual-frequency mode provides a depth range of
approximately 40 ft (12.2 m) at either the low (1.5 kHz) or high (12 kHz) frequency. This mode is recom-
mended in areas where rebar, wire mesh, or other metal (passive) interference may be encountered. The
single-frequency mode (12 kHz only) provides a depth range of approximately 60 ft (18.3 m). This mode
is intended for use in areas of active interference.
The frequency mode for the transmitter is determined by the orientation of the transmitter at startup, when
the batteries are loaded into the battery compartment. You cannot change the frequency mode of the
dual-frequency Eclipse transmitter when it is downhole.
Starting the transmitter in dual-frequency mode
Loading Batteries
for Dual Mode
1. Remove the battery cap, and hold the transmitter vertically with the battery
compartment up and the front end pointing down (see diagram).
2. Load two C-cells (or a SuperCell lithium battery) into the battery compart-
ment with the positive terminal down.
3. Replace the battery cap while rotating the transmitter in this vertical position.
4. Power up the receiver, and verify that the main menu option shows High
Fre.
5. Select Locate, and click the trigger.
6. You will see DL for Dual Low on the left side of the screen directly above
the thermometer symbol.
7. Verify that the signal strength in the housing at a distance of 10 ft (3 m) is
480 to 490, and record the value.
20 DigiTrak
®
Eclipse
®
Operator’s Manual