3M 2250M-iD User Manual

78-8130-6150-0 Rev G 

13

I. 3M

™

 Dynatel

™ 

Receiver 2250M Key Pad and Display Definitions

2250M Cable/Pipe Locator

Access panel on 
bottom side of 
Receiver under 
rubber cover.

[1] On/Off (Power): Turns unit on and off.
[2] Speaker Volume Control: Adjusts the volume of the receiver (off, low, med, high, 

and Xpand).
[2A] Speaker Volume Icon: Indicates the relative volume level of the receiver. When 

the third ring is dotted and ‘xpnd' appears below the speaker icon, the receiver is in 

“Expander” mode. This mode is used to pinpoint the target cable or pipe.
[3] Contrast: The arrows located above and below the contrast icon will adjust the 

contrast of the display.
[4] Gain Adjust: Adjusts the sensitivity of the receiver either up or down to maintain a 

satisfactory signal level.
[5] Locate/OK: Sets the receiver to trace mode for locating Cable/Pipe, Markers (for 

iD units only), Tone. Tone/Ext is used to activate the External Jack [13]. Acknowledges 

setup entries (OK).
[6] Menu: Displays setup screen for configuration of the unit, i.e.: clock, language, 

depth units, marker data and frequencies.
[7] Backlight: Toggles the backlight low, high, and off.
[8] Battery Icon: Indicates battery level.
[SK] Soft Keys: There are four soft keys (yellow keys) on the receiver. The function 

of each key is shown above the yellow key on the display screen. The functions will 

change, depending on the operation mode of the receiver. For instruction purposes in this 

manual, the display command is followed by [SK] to identify it as a soft key.
[9] Soft Key Commands: Definitions for each of the four soft key functions. 
[10] Signal Strength: Digital reading of the signal that the receiver is detecting from the 

target.
[11] Bar Graph: Graphical representation of the received signal.
[12] Gain Level: Displays relative gain level.
[l3] External Jack: Port to connect cables from external devices such as the earth frame 

(A-Frame), a second 3M Dyna-Coupler, or a toning coil.
[14] Serial Port: RS232 port to connect the receiver to a PC via serial cable or USB-to-

serial adapter cable.