3M 2550 Manuale Utente

78-9000-0192-2 Rev C 

59

A. Aerial Faults (Toning) (3M

™

 Dynatel

™

 Models 2573 and 2573-iD only)

Transmitter Setup
Step 1.  Connect the transmitter (based on type of fault) as described in Connection 

Diagrams in the following section.

Step 2.  Press and hold off [T-1] to perform a battery test.
Step 3.  Press on: Ohm-meter/Faul Locate/Tone [T-2] to power the Transmitter on and 

to verify the fault.

Step 4.  Press on: Ohm-meter/Faul Locate/Tone [T-2] twice more to select the Tone 

mode.

Step 5.  The Digital Display [T-4] will alternately flash between 577 and 200K.
Step 6.  Press Output Level [T-5] for high or maximum output level.
Receiver Setup
Step 1.  Press On/Off [1] to turn the receiver on.
Step 2.  Press Menu/OK [5:Toggle to MAIN MENU] 
Step 3.  Press Tone/Ext [SK] to select Tone mode.
Step 4.  Press Freq [SK Toggle] to select 577Hz.
Step 5.  Connect a toning coil to the receiver External Jack [15] ([14] for 2550 locator).
Step 6.  Move the toning coil along the cable and find a peak signal then press Gain [3] 

down to adjust the receiver gain.

Step 7.  Press Speaker Volume Control [13] ([12] for 2550 locator) to adjust the speaker 

volume as needed.

Step 8.  Follow the cable with the toning coil.

 

− When the receiver detects a short, cross, or ground fault (Connection 

Diagram Figures #1, #2, or #3), the audio and Signal Strength [9] ([8] for 

2550 locator) will stop or drop off sharply.

 

− When the receiver detects a split (Connection Diagram Figure #4) the audio 

and Signal Strength [9] ([8] for 2550 locator) will increase significantly.

 

− When verifying a split (Connection Diagram Figure #5) the audio and 

Signal Strength [9] ([8] for 2550 locator) will decrease after the toning coil 

has passed the split.