Opticom GPS System Alternate methods of activating and wiring

Opticom GPS System Alternate methods of activating and wiring
Technical Bulletin
February 2008
Opticom™ GPS System
Alternate methods of activating and wiring vehicle
equipment
Intended Use
The Opticom™ GPS System is intended to
assist authorized priority vehicles through
signalized intersections by providing
temporary right-of-way through vehicle
operator interface to the system and through
the use of common traffic controller
functions. Global Traffic Technologies has
not evaluated this product for use in any
other application.
Description
This document describes the various
options for activating and wiring the
Opticom GPS system vehicle equipment.
The most common methods of activation
and wiring are described in the Opticom
GPS system Vehicle Equipment
Installation Instructions. This document
covers many more possibilities that are
not described in the standard installation
instructions.
Technical Support
If you have any questions please call GTT
Technical Support at 1-800-258-4610.
1. Blue Wire (Remote Activation Line)
Standard Activation/Wiring
In order for the vehicle equipment to
become active and request preemption it
is necessary to apply +12 VDC to the
blue wire. In addition the ON/OFF
switch needs to be depressed.
Typical Use
The blue wire is typically wired into the
lightbar. The ON/OFF switch is left
depressed and the vehicle equipment is
activated automatically when the lightbar
is turned on. If the user desires, they can
manually shut off the vehicle equipment
while the lightbar is still on by releasing
the ON/OFF switch.
On vehicles without a lightbar or in cases
where it is desired to activate the vehicle
equipment without the lightbar, the blue
wire is connected to a source that will
supply +12 VDC when the ignition is
turned on. The ON/OFF switch is then
used to activate the vehicle equipment.
2. Activating with switch OR lightbar
There is also an option to activate the
vehicle equipment by applying +12VDC
to the blue wire OR depressing the
ON/OFF switch. In this mode, the
position of the ON/OFF switch does not
matter if the blue wire is used to activate
the equipment (the unit may be powered
on with the switch in the off state).
Alternately the power state of the blue
wire does not matter if the ON/OFF
switch is used to activate the vehicle
equipment.
To use this mode, it is necessary to
remove the cover from the vehicle
control, unit and move two jumpers on
the circuit board.
Figure 2-1
1. Remove all connectors and
brackets from the vehicle control
unit.
2. Using a small screwdriver
carefully separate the top cover
from the bottom cover of the
vehicle control.
3. On connector J8, move the two
jumpers that are in positions 1 & 2
and place them in position 3 & 4
4. Replace the cover and reconnect
the vehicle control unit.
Note: Do not move any other jumpers or
place jumpers in any other jumper
positions or undesirable operation may
result.
3. Brown Wire (Low Priority Line)
What the Low Priority feature does
Applying +12 VDC to the brown wire will
temporarily switch a high priority vehicle to
transmit that it is a low priority vehicle. In
other words a high priority vehicle can be
forced to transmit a Transit Signal Priority
request. As soon as +12 VDC is removed
from the brown wire, the vehicle equipment
will resume transmitting that it is a high
priority vehicle. Applying 12 VDC to the
brown wire will have no effect on a low
priority vehicle.
When the Low Priority feature is typically
used
Most installations will likely not use the Low
Priority mode.
The most common use of this feature would
be in a maintenance vehicle where the
maintaining agency is supporting both
emergency vehicle preemption and transit
signal priority. This would allow the
maintenance vehicle to simulate either an
emergency vehicle or a transit vehicle with
the flip of a switch.
Maintenance vehicle wiring
Typically a set of high priority vehicle
equipment is installed in the maintenance
vehicle. The installer will need to provide a
separate switch. The brown wire should be
connected to one terminal of the switch and
+12 VDC would be connected to the other.
The user would then activate the switch to
simulate a low priority vehicle. When the
switch is not activated the vehicle will
return to a high priority vehicle.
Note: Vehicle Control Unit Firmware
version 0.97 or later is required for
low priority. In prior versions of
firmware, the brown wire has no
function.
4. Gray Wire (Probe Mode Line)
What the probe mode does
Applying +12VDC to the gray wire will
cause the equipment to transmit that it is a
probe priority vehicle. A probe priority
vehicle will not be granted preemption or
transit signal priority (TSP). When +12 VDC
is applied to the gray wire, the vehicle
equipment, the disable indicator on the
vehicle control unit will be illuminated
amber. The amber disable indicator will let
the user know that they are operating in
probe mode.
When is probe mode used?
When the vehicle equipment is powered up
in probe mode it is fully operational but not
requesting preemption. The serial ports are
all active which allows one of them to
output GPS data which may then be used by
other onboard devices. In this way the GPS
data is made available at all times even if
the vehicle does not currently need
preemption. When preemption is needed,
+12 VDC will be removed from the gray
wire(usually by turning on the lightbar).
This will pull the vehicle equipment out of
probe priority (relay needed) and set to it
transmit high priority. See figure 4-1 for
wiring details for this mode
This mode is typically not need in transit
applications since the vehicle equipment is
typically powered while the transit vehicle
is operating
Another use might be if the vehicle is
intended to operate in a probe mode so that
each time the vehicle passes through an
Opticom™ GPS equipped intersection the
vehicle will be logged. In this way, data
about travel times, congestion levels etc
may be gathered. If the vehicle then needs
preemption or TSP, +12 VDC would be
removed from the gray wire via a switch or
relay. At that point, the vehicle will begin
transmitting a high priority/TSP request.
Vehicle wiring
If either of the two modes described above
is not needed, the gray wire would remain
unconnected.
If probe mode is to be used, the gray wire
would be connected to a source that will
supply +12 VDC. The ON/OFF switch also
needs to be depressed (unless the OR
function has been enabled by moving the
jumpers). The blue wire will typically be
connected to the ignition. A relay is
typically connected to the lightbar, which
when activated sets the vehicle back to high
priority. See figure 4-1
Logging
By default each time a probe vehicle is
detected by the intersection equipment it
will be logged. Using ITS Explorer, the user
may disable probe priority in the phase
selector. Probe vehicles will then not be
logged. See the ITS Explorer help file for
more details.
Note: Vehicle Control Unit Firmware
version 1.06 or later is required for
probe priority. In prior versions of
firmware, the gray wire has no
function.
4a. Wiring to switch between Probe priority and High priority
The following diagram describes recommended wiring to allow a vehicle to normally operate in
probe priority and then switch to high priority when needed.
+12 VDC
(Always ON)
NO
12 VDC applied when light bar is active (+)
NC
12 VDC
Relay
Ground (-)
Gray Wire
Common
Figure 4-1
Notes:
1. Leave ON/OFF switch depressed. Use
standard jumper setting.
2. Connect the blue wire to a +12 VDC
ignition source. When the vehicle is started
vehicle equipment will be activated.
3. Connect the gray wire to the common
terminal of the relay. Connect +12 VDC
(battery) to the normally closed contact of the
relay.
3a. Applying+ 12VDC to the gray
wire will cause unit to operate in
probe mode.
3b. While in probe mode the vehicle
will not request preemption.
3c. The disable light will be
illuminated amber indicating no
preemption (probe).
4. Connect the plus terminal of the coil of
the relay to a point which will apply +12
VDC when light bar is activated. Connect
the minus terminal to ground.
4a Applying 12 VDC to the relay will
close the relay which removes 12
VDC from the gray wire.
4b. The equipment will then switch
to high priority.
4c. The disable light will go dark
indicating that the equipment is in
high priority.
5. Any automotive type 12 VDC relay that
has normally closed contacts will work.
6. If you want to run with high priority in
other than Code 3 then replace the relay with
a manual switch. You will then need to
manually close the switch when you want to
switch from probe to high priority.
5. White Wire (Disable Line)
What is does
When the white wire sees a transition
(+12 VDC to ground OR ground to +12
VDC), the vehicle equipment will
transmit that it is a disabled vehicle and
preemption/TSP will not be granted.
Typical Use
The white wire is typically wired to a
point on the vehicle that will
automatically be activated when an
emergency vehicle arrives on the scene.
Typical locations are a door switch, an
air brake switch, parking brake etc. On a
transit vehicle this wire may be wired
into the passenger door to prevent TSP
requests while passengers and loading
and unloading.
Wiring and Setup
The white wire is looking for a change in
state. When it sees this change, the
disable mode is activated and vehicle
begins transmitting that it is disabled.
The change of state can be detected if the
white wire has a ground applied to it or if
it has +12 VDC applied to it.
Set Disable Triggering Mode
It is necessary to set which method is
used via ITS Explorer (Disable Triggering
Mode). If method is not set to match the
actual wiring, the disable line will not be
recognized by the vehicle control unit
and disable mode will not be activated.
See the ITS Explorer help file for more
details.
Note:
If the disable input is active at vehicle
start-up the vehicle equipment will not
recognize it. The equipment needs to
see the transition from +12 VDC to
ground or ground to +12VDC in order to
go into disable mode.
Set Disable Operating Mode
There are two choices for how the
disable mode works; Latching and Non
Latching.
In latching mode the disable mode will
be entered when the white wire sees a
transition. In order to reactivate the
priority request, it is necessary to cycle
the power to the vehicle control unit.
This is the typical mode used when
opening the door on a vehicle is used as
the disable activation.
In Non-Latching mode the disable mode
will be entered when the white wire sees
a transition. When the white wire
transitions back, the vehicle unit will exit
disable mode and the preemption/TSP
request will resume. This is the typical
mode used when setting the brake on an
emergency vehicle is used as the disable
activation.
It is necessary to set which mode is to be
used via ITS Explorer (Disable Operating
Mode). See the ITS Explorer help file for
more details.
6. Activation/Wiring Combinations
The following sections describe the
operation of the vehicle equipment with
different scenarios determined by various
combinations of wiring, activation, and
jumper settings.
Definitions
Shaded (red)/Bold Wire Color: Indicates
that +12 VDC is being applied to the
wire (or ground is applied on the white
wire if set to that activation method)
Non-Bold Wire Color: Indicates that +12
VDC is NOT being applied to the wire
(or ground is NOT applied on the white
wire if set to that activation method)
Scenario 1
Vehicle is factory programmed to High Priority with standard jumper settings, switch in
ON position.
With the switch in the OFF position, all of the below conditions will result in Not Active.
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Does Not Transmit
Gray
Brown
Blue
White
Does Not Transmit
Does Not Transmit
Gray
Brown
Blue
White
Does Not Transmit
Transmits High Priority
Gray
Brown
Blue
White
Transmits Probe Priority
Does Not Transmit
Gray
Brown
Blue
White
Transmits Disabled
Does Not Transmit
Gray
Brown
Blue
White
Transmits Low Priority
Does Not Transmit
Gray
Brown
Blue
White
Transmits Disabled
Transmits Low Priority
Gray
Brown
Blue
White
Does Not Transmit
Transmits Disabled
Gray
Brown
Blue
White
Transmits Disabled
Scenario 2
Vehicle is factory programmed to Low Priority with standard jumper settings, switch in
the ON position.
With the switch in the OFF position, all of the below conditions will result in Not Active.
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Does Not Transmit
Gray
Brown
Blue
White
Does Not Transmit
Does Not Transmit
Gray
Brown
Blue
White
Does Not Transmit
Transmits Low Priority
Gray
Brown
Blue
White
Transmits Probe Priority
Does Not Transmit
Gray
Brown
Blue
White
Transmits Disabled
Does Not Transmit
Gray
Brown
Blue
White
Transmits Probe Priority
Does Not Transmit
Gray
Brown
Blue
White
Transmits Disabled
Transmits Low Priority
Gray
Brown
Blue
White
Does Not Transmit
Transmits Disabled
Gray
Brown
Blue
White
Transmits Disabled
Scenario 3
Vehicle is factory programmed to High Priority with jumpers setting in OR mode,
NOT using switch to activate
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Does Not Transmit
Gray
Brown
Blue
White
Does Not Transmit
Does Not Transmit
Gray
Brown
Blue
White
Does Not Transmit
Transmits High Priority
Gray
Brown
Blue
White
Transmits Probe Priority
Does Not Transmit
Gray
Brown
Blue
White
Transmits Disabled
Does Not Transmit
Gray
Brown
Blue
White
Transmits Low Priority
Does Not Transmit
Gray
Brown
Blue
White
Transmits Disabled
Transmits Low Priority
Gray
Brown
Blue
White
Does Not Transmit
Transmits Disabled
Gray
Brown
Blue
White
Transmits Disabled
Scenario 4
Vehicle is factory programmed to High Priority with jumpers setting in OR mode
Using switch to activate
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Transmits High Priority
Gray
Brown
Blue
White
Transmits Disabled
Transmits Low Priority
Gray
Brown
Blue
White
Transmits Disabled
Transmits High Priority
Gray
Brown
Blue
White
Transmits Probe Priority
Transmits Disabled
Gray
Brown
Blue
White
Transmits Disabled
Transmits Probe Priority
Gray
Brown
Blue
White
Transmits Low Priority
Transmits Low Priority
Gray
Brown
Blue
White
Transmits Disabled
Transmits Low Priority
Gray
Brown
Blue
White
Transmits Disabled
Transmits Disabled
Gray
Brown
Blue
White
Transmits Disabled
Scenario 5
Vehicle is factory programmed to Low Priority with jumpers setting in OR mode
Using switch to activate
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
.
Transmits Low Priority
Gray
Brown
Blue
White
Transmits Disabled
Transmits Low Priority
Gray
Brown
Blue
White
Transmits Disabled
Transmits Low Priority
Gray
Brown
Blue
White
Transmits Probe Priority
Transmits Disabled
Gray
Brown
Blue
White
Transmits Disabled
Transmits Probe Priority
Gray
Brown
Blue
White
Transmits Probe Priority
Transmits Probe Priority
Gray
Brown
Blue
White
Transmits Disabled
Transmits Low Priority
Gray
Brown
Blue
White
Transmits Disabled
Transmits Disabled
Gray
Brown
Blue
White
Transmits Disabled
Scenario 6
Vehicle is factory programmed to Low Priority with jumpers setting in OR mode
NOT using switch to activate.
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Gray
Brown
Blue
White
Does Not Transmit
Does Not Transmit
Transmits Low Priority
Does Not Transmit
Does Not Transmit
Does Not Transmit
Transmits Low Priority
Transmits Disabled
Gray
Brown
Blue
White
Does Not Transmit
Gray
Brown
Blue
White
Does Not Transmit
Gray
Brown
Blue
White
Transmits Probe Priority
Gray
Brown
Blue
White
Transmits Disabled
Gray
Brown
Blue
White
Transmits Probe Priority
Gray
Brown
Blue
White
Transmits Disabled
Gray
Brown
Blue
White
Does Not Transmit
Gray
Brown
Blue
White
Transmits Disabled
7. Indicator Lights
The following table describes the meaning of the various indicators on the Vehicle
Control unit.
Indicator
Color
Meaning
ON/OFF
Switch
Steady Green
Transmitting a priority request
Flashing Green
Transmitting Disabled
POWER
Steady Green
Unit is powered on
DISABLE
Off
Transmitting priority request
Steady Amber
Transmitting Probe priority
Flashing Green
Transmitting Disabled
Steady Amber
Not receiving GPS, not transmitting
Steady Green
GPS has good 3D or WAAS fix
Steady Amber
No communication between radio/GPS unit and vehicle
control unit, not transmitting
Steady Green
Good communication between radio/GPS unit and
vehicle control unit
GPS
RADIO
Important Notice to Purchaser:
EXCEPT FOR THE LIMITED WARRANTIES SET FORTH IN THIS DOCUMENT, GLOBAL TRAFFIC
TECHNOLOGIES (GTT) MAKES NO OTHER WARRANTIES AND EXPRESSLY DISCLAIMS ALL
OTHER WARRANTIES, WHETHER EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION,
ANY WARRANTY AS TO MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE.
GTT will, at its sole option, repair, replace or refund amounts paid for any OpticomTM GPS System
component found to be defective in materials or manufacture within two (2) years from the date of
shipment from GTT. GTT will provide a functioning replacement component for an additional three
(3) years if extended warranty is purchased at time of original purchase and installation.
GTT warrants future system operability coverage as described herein. This warranty shall not apply
to any Opticom GPS system components which have been (1) repaired or modified by persons not
authorized by GTT; (2) subjected to incorrect installation, misuse, neglect or accident; (3) damaged
by extreme atmospheric or weather-related conditions, flood, fire, vandalism, crime or other events
beyond the reasonable control of GTT; or (4) subjected to events or use outside the normal or
anticipated course.
IN NO EVENT SHALL GTT BE LIABLE FOR ANY INJURY (INCLUDING, WITHOUT LIMITATION,
PERSONAL INJURY), DEATH, LOSS, OR DAMAGE (INCLUDING, WITHOUT LIMITATION,
PROPERTY DAMAGE), WHETHER DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL,
OR OTHERWISE, ARISING OUT OF THE USE OR INABILITY TO USE, REPAIR OR FAILURE TO
REPAIR, ANY GTT PRODUCT, REGARDLESS OF THE LEGAL THEORY ASSERTED. THE REMEDIES
SET FORTH IN THIS DOCUMENT ARE EXCLUSIVE.
Sale and use of the Opticom GPS system is expressly restricted to authorized agencies of
government customers, within their specific jurisdictions. However, because the signal generated by
the Opticom GPS system may not be exclusive, GTT does not warrant exclusive activation by
purchaser. Authorized users who desire to use or coordinate use of the Opticom GPS system with
that of other jurisdictions must first obtain the prior written approval of each authorized user in the
jurisdiction where use is sought.
Since the availability of the GPS signal is out of GTT’s control and is required for system operations,
GTT does not warrant against Opticom GPS system failures due to the unavailability of the GPS
signal for any reason.
Global Traffic Technologies, LLC
Global Traffic Technologies Canada, Inc.
Opticom is a trademark of Global
7800 Third Street North
157 Adelaide Street West
Traffic Technologies, LLC
St. Paul, Minnesota 55128-5441
Suite 448
Used under license in Canada
1-800-258-4610
Toronto, ON M5H 4E7
Please recycle. Printed in the U.S.A.
651-789-7333
Canada
@ Global Traffic Technologies, LLC 2007
www.gtt.com
1-800-258-4610
All rights reserved.
79-1000-0100-7 A
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