3M 2573, 2550 manual Depth and Current Estimate, Expanded Mode, VOL 13 press up arrow

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.

8. Depth and Current Estimate

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.

32 78-9000-0192-2 Rev C