User's Manual

VTU-3 Users Guide
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Section 2 VTU-3 INTERFACE
As you can see in Figure 1 the VTU3 (PTCIII) is similar to the display units on previous
tracking units (PTCI and PTCII).
Figure 1 VTU3 Display Unit
On the left side of the unit is a screen that displays information about a Vehicle Locating
Unit (VLU) installed in the target vehicle. On the right side of the unit is a group of buttons
that are used to control the operation of the display unit.
The characters on the upper left side of the screen display the “Reply Code” received
from the VLU in the tracked vehicle.
One of the differences from the PTCI and PTCII is the fact that the VTU3 is capable of
displaying an expanded number of characters. A sixth character is available for future use
but is not active at this time.
On the bottom left of the display screen is the “Signal Strength Indicator”. This indicator
works the same as on previous units, as you get closer to the target vehicle the number of
vertical bars will increase.
On the right side of the display screen is the “Direction Indicator” (Relative Bearing
Indicator). This indicator is the same as on previous units, it displays the direction of travel
required to intercept the target vehicle.
In the group of buttons on the display unit there is a button labeled “SCAN/ENTER”, this
button is not active at this time.
Reply
Code
Direction
Indicator
Mode
Button
Up Arrow
Down Arrow
Signal
Strength
Indicator
Scan/Enter
B
utton
System
Menu