Operating Instructions
DigiTrak
®
F5
®
SST
®
Operator’s Manual
27
Calibrating SST Transmitter and Confirming Proper System Operation
13. Calibrate SST Transmitter to Receiver
In this step, you will use the receiver to conduct a 1-point calibration (10 ft or 3 m), and then you will verify
accurate depth readings using a tape measure.
First, ensure that there are no metal structures within 30 ft (9 m), such as steel pipe, chain-link fence,
metal siding, construction equipment, or automobiles. Also make sure that the receiver is not positioned
over rebar or underground utilities. Check signal strength by selecting the locate mode from the
receiver’s
main menu screen. Position the receiver 10 ft (3 m) to the side of the SST transmitter in the non-mag
housing, as shown in the figure below.
10-Foot (3-m) Measurement for Calibration Procedure
Verify that the signal strength at this distance is 660 to 680
.
Return to the main menu screen (toggle down
once). Select
the calibration option from the main menu screen and click the trigger. Select 1-point
calibration and follow the prompts to complete the calibration. Do not move the receiver while it is
calibrating.
When calibration is complete, the confirmation signal will sound and a checkmark will display on the
screen, indicating a successful calibration. The screen will then return to the locate mode display. Take
depth readings at several locations using a tape measure to verify that the depth reading on the display
remains accurate.
14. Measure SST Transmitter Current Draw in Housing
Using an amp meter hooked up in series, as shown in the figure in step 7 entitled
“Setup for SST
Transmitter Power Up and Amp Reading,
” measure the current draw of the SST transmitter—a good
reading is approximately 0.2 to 0.5
amp.
15. Verify Pitch Readings Using Digital Level
Compare the SST transmitter’s pitch readings at the remote display and the receiver with those shown on
a digital level. Position the digital level on the housing, and then lift or lower the housing to different
inclinations and compare the readings on the level against the pitch readings on the remote and the
receiver to confirm accuracy.
10 ft (3 m)
F5 SST
receiver
SST transmitter
centerline
SST
transmitter
(inside
non-mag
housing)
Outside edge
of receiver
