Field Xpert
4 Operability
Hauser
17
4.2.2
Batteries
The VIATOR Bluetooth modem requires three AAA alkaline batteries, which are included in the
scope of delivery. Insert them into the Bluetooth modem, making sure that the polarities are correct.
Replace the lid and secure the battery compartment by tightening the screw.
Notice!
• To save battery power, we recommend that you switch off the modem when it is not in use.
4.2.3
On/off button
Switch on the modem by briefly pressing the on/off button. This action is confirmed by a constant
green LED followed by a flashing green LED. Switching on the modem automatically activates the
Bluetooth function.
Switch off the modem by pressing the on/off button for approx. 2 seconds. A constant green LED
will illuminate while you press, indicating that the device is being switched off. The LED and the
device are then switched off.
4.2.4
LED status (power indicator)
When you switch on the modem or press the on/off button briefly while the modem is switched
on, the percentage amount of charge remaining in the batteries will be indicated:
• 4 flashes = 80% or more of battery power remaining
3 flashes = 50% or more of battery power remaining
2 flashes = 30% or more of battery power remaining
1 flash = 10% or more of battery power remaining
0 flashes = less than 10% of battery power remaining
At less than 10%, we recommend that you replace the batteries immediately.
4.2.5
Undervoltage lockout
As soon as the battery voltage drops below the shutdown voltage of 2.8 V, the modem immediately
powers itself off. The batteries must be replaced.
Notice!
• If the modem switches off automatically, please ensure that the last actions performed are
transmitted to the field device again once the batteries have been replaced.
4.2.6
Inactivity power off
After 30 minutes of inactivity (no Bluetooth connection), the VIATOR Bluetooth modem switches
itself off automatically in order to conserve battery life. To reactivate the modem, you must press
the on/off button again.
Notice!
• This setting can be adjusted manually. To do this, you can download software (VIATOR CheckBT
software) free of charge from the web site of the modem manufacturer MACTek
(www.mactekcorp.com/products.htm)
