Motorola MTP850 Ex Product Information Manual page 93

MMI Features
• Pressing the 'contacts' softkey will access the address book
18.2 Rotary Knob
18.2.1 Knob Physical Characteristics
The multi-function rotary knob has fixed positions where the user can feel a 'click' on each position
change, but it has no barrier to stop the user from rotating the knob more than one revolution ('end-
stop'). On top of the rotary is a clickable push-button.
18.2.2 Knob Operation
The rotary knob can be provisioned to operate in one of 3 ways
• Volume only
• List scroll only
• Dual mode - Volume/List scroll
In volume only operation, the rotary will be used for setting the volume level and will not be used for
list scrolling.
In list scroll only operation, the rotary will be dedicated for list scrolling only and will not be used for
setting the volume level. In this case, the programmable side-buttons will be used for volume
control.
In dual mode operation, the rotary will be used primarily as a volume control, but can be temporarily
put into list scroll mode by pressing on the rotary push-button. The rotary will remain in list scroll
mode while the user scrolls and will then return automatically to volume control mode after being
inactive for a provisioned amount of time.
A list scroll icon will appear while list scroll mode is active, so that the user can know which mode
the rotary is in. In addition, when the rotary returns automatically to volume control, a tone will be
heard.
18.2.3 Blind TG Operation ('End-Stop' Simulation)
The rotary can be provisioned to operate with non-continuous scrolling for blind Talkgroup selection
as described in section 2.1.5 "TG Blind Operation" on page 2-8.
18.2.4 Rotary Lock
If the terminal is provisioned for Rotary Lock, a long press on the rotary push button will cause
rotation of the knob to have no effect on volume or list scrolling. This purpose of this feature is to
prevent accidental rotation of the knob. When the rotary is locked, a subsequent long press on the
rotary button will unlock the rotary.
18.2.5 TG Select Confirm
When using the rotary to scroll through groups, normally the group is automatically selected after the
knob is inactive for a number of seconds. However, the terminal can be provisioned to only select
the group after the user explicitly confirms the selection.
18.3 Speaker / Earpiece
The terminal has two separate microphones. One located at the top of the unit for dispatch (semi-
duplex) operation, and the second located on the bottom of the unit for full duplex calls.
March 2009 Chapter 2 - MTP850 Ex/MTP810 Ex Product Information Manual
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