User's Manual

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DigiTrak
®
F5 User Guide 24
Calibrating the Receiver to the Transmitter
A tape measure is required for both calibration methods.
The 1 Pt Calibration is the preferred calibration method and is
used to calibrate the receiver to the transmitter when the
transmitter is above the ground. When using this method, the
receiver and transmitter should be parallel and level with
each other.
The 2 Pt Calibration is for calibrating the receiver to the
transmitter when the transmitter is below ground. When using
this method the transmitter must be below ground,
approximately level, and have been properly located. See
the Locating section for information on locating the
transmitter.
Do not calibrate if:
 You are within 10 ft (3 m) of metal structures, such as
steel pipe, chain-link fence, metal siding, construction
equipment, automobiles, etc.
 The receiver is over rebar or underground utilities.
 The receiver is in the vicinity of excessive electrical
interference.
 The transmitter is not turned on.
 The transmitter is not installed in the housing.
 The signal strength from the transmitter is less than 300
points or greater than 950 points.
After a calibration option is selected from the calibration
menu, the following screen will appear while the receiver
verifies that the signal strength is acceptable for
calibration.
Note: Electrical interference is determined by observing
the signal strength with the transmitter turned on and
then with the transmitter turned off. If the difference
between these numbers is less than 150, the electrical
interference is excessive.