3M 2550 Manuale Utente

 32 

78-9000-0192-2 Rev C

F. Expanded Mode

VOL [13] (press up arrow)

When the third ring of the speaker icon is dotted 

or broken and ‘xpnd’ appears below the speaker 

icon as shown, the receiver is in “Expanded” 

mode. This mode is used for pinpointing a 

target cable or pipe. The area of response of the 

receiver narrows, allowing the locator to detect 

very small signal changes. Press the Speaker 

Volume Control [13] ([12] for 2550 locator) key 

to activate the "Expanded" mode.

Verifying the target path, depth and current can be helpful tools.
•  Pinpoint the cable or pipe being located.

•  Lower the tip of the receiver to the ground and 

press DEPTH [4].

 

− The depth to the target cable or pipe is displayed 

in the units specified in the receiver set up 

menu. The bold current reading is the relative 

current measurement. This reading can be 

compared to the relative current reading that 

alternately flashes with the frequency on the 

transmitter to help identify the target cable/pipe. 

The highest relative current value will be the 

target cable/pipe and will compare closest to the 

transmitter relative current value. The milliamp 

reading is an actual current measurement.

 

− There are two options for measuring depth. 

Live depth is a continuous measurement. 1-Shot 

Depth is an averaging of the depth reading over 

a short period of time. When in 1-Shot mode, 

the unit will average the depth reading for three 

seconds, and then display the result on the 

display. Press DEPTH [4] to alternate between 

the two modes.

 

− Five depth readings can be saved with the time, 

date and relative current measurements.

•  Pressing Mem Select [SK] and then Save [SK] will place each entry in sequential 

order in memory (M1–M5) until five readings have been stored. The unit will 

overwrite saved entries in excess of five, beginning with M1.