Mini SWER & Pole Tester Features

The GLM MIni SWER & Pole Tester features a full function internal self testing unit, low battery indicator detection and unit activation indication, providing a safe and reliable instrument.

Battery Replacement

SWER BatteryThe battery compartment is located on the rear of the GLM MINI and requires a 9 volt pp3 battery. There is an option of a rechargeable battery for some models.

Ensure the battery is fitted the correct way placing the positive terminal as indicated.

Indicator Lights

SWER Power OnPower On Indicator (Green)

Low Battery Indicator (Orange)

When the unit is turned on a GREEN LED is illuminated. This indicates good battery condition and circuitry connectivity. As the battery decreases below this point the unit will switch the tester to a continuous ORANGE LED.

Push to Test Button

The self test button located on the front face of the GLM Mini is a full function test of all the components of the unit.


This feature should be initiated every time the unit is turned on and at regular intervals during the working day. In the event the tester fails please refer to (Service and Trouble Shooting).

High / Low Voltage Sensitivity Switch

SWER High Low SensitivityThis switch is used to enable the GLM Mini to be operated through the 12 point switch for the calibration of distance in high and low electrical fields.

e.g. If the mains are 11kV/22kV/33kV the high setting is required because the field is not as strong. If the over head mains are from 66kV-132kV the low setting is required.

Sensitivity Dial

The dial allows for the adjustment of the unit to the work site signal strength given network voltage and distance (height of conductor), use this dial to adjust the sensitivity for the site conditions.

Parts Identification

Mini SWER & Pole Tester Part Identification