Bullard T4 - Handbuch (Seite 6)

Figure 4
Battery Locking Buttons
NOTE
As the throttle engages more of the scene, the blue will become lighter in hue to help
differentiate objects in the scene.
AAs you cycle through the scene, you'll see the symbol “TT” and a corresponding number in the bottom
left corner of the display. The “TT” indicates “Thermal Throttle” mode. The number (0-100) is a point of
reference to indicate the level of Thermal Throttle engagement; by itself it has no specific meaning. To
lessen the amount of blue in the scene, press (or hold) the up button. Alternatively, pressing both buttons
simultaneously for one second will deactivate the Thermal Throttle.
NOTE
The T4 Thermal Imager takes approximately eight seconds to calibrate from initial startup.
During this short startup period, the Electronic Thermal Throttle or Digital Zoom will not engage.
Digital Zoom Feature
The T4 enables magnification of far away scenes at both
2x and 4x zoom. With one simple push of the black “z”
button, located next to the power button under the LCD
display, the 2x zoom is enabled (
Figure 2). A second
push of the button activates the 4x zoom. A third push of
the button disables the zoom function. The Digital Zoom
feature also works seamlessly with Electronic Thermal
Throttle and Super Red Hot.
Using the Battery Charger
The battery should be charged in the battery charger
using either the AC or DC adapter provided (Figure 3).To charge a
battery, insert it into the charger so that the metal contacts on the battery
are aligned with the metal contacts in the charger. A red light will
illuminate on the charger to indicate that the battery is charging. When the
light on the charger turns to green, the battery is fully charged. You may
leave the battery in the charger indefinitely as the battery will not
overcharge and the charger will initiate a trickle charge to maintain the
battery's charge. For maximum battery life and performance, you should
remove the battery from the charger and discharge it completely on a
monthly basis.
NOTE
If you do not see the red LED illuminate when you place a
battery into the charger, the battery is not charging.
Loading/Unloading the Battery
Loading and unloading the battery on the Bullard T4 is straightforward
(Figure 4).To install a battery, slide the battery into the groove on the
bottom of the unit and ensure that the battery is properly seated.
To remove a battery, depress both battery locking buttons
simultaneously and slide the battery out of the unit. Since it
can only be loaded one way, the battery is easily replaced
in the dark. Additionally, as with all batteries, your Bullard
rechargeable battery will experience a slow drain of its charge
during storage. The amount of drain varies widely based on storage conditions. For best performance,
charge each of your batteries every two weeks.
NOTE
Fully charged NiMH batteries will provide a run time of more than three hours. This run
time will be less in extreme heat or extreme cold conditions and/or if the transmitter is
in use. To extend the potential lifespan of your batteries, fully drain and recharge each
battery monthly. To help extend the life of the rechargeable batteries and prevent
unexpected instances of uncharged batteries, develop a clear formalized plan for
maintaining, charging, and replacing your batteries.
Bullard provides an optional AA Alkaline battery case which can be used as an alternative to the standard
10 V NiMH rechargeable batteries. The AA alkaline battery case requires eight AA alkaline batteries. Once
the batteries are installed, the case loads into the unit in the same manner as the standard NiMH battery.
Due to the unique way that alkaline batteries disperse power to the unit, the LED indicators will report
battery levels that are not necessarily indicative of the battery's actual remaining charge. Fully charged AA
Alkaline batteries will typically operate a Bullard T4 Thermal Imager for two hours. Do not insert the AA
Alkaline battery case into any Bullard battery chargers, including the Powerhouse.
Strap Assemblies
Side Straps
TThe side straps are designed to be field replaceable. Users can order replacements and install them
without having to return the thermal imager to the
factory.
Removing/Installing the Side Straps
To remove either of the right or left side straps, loosen the
strap and pull it through the strap loop located on either
side of the LCD display (Figure 5). Remove the screw
that holds the strap to the imager. To install, fasten the
strap to the unit using the screw provided. Do not over-
tighten. Feed the strap through the strap loop and adjust
to the desired length.
Adjusting the Side Straps
To adjust a side strap, loosen the hook and loop and set to the desired length.
Combination Strap
The combination strap (Figure 6) can be used either as a wrist strap to keep the
imager from falling if it should slip from your hand, or as a gear strap, hooked directly onto your turnout
gear or SCBA. As a wrist strap, the adjustable strap fits over the sleeve of your turnout gear and can
adjust to any size wrist. The strap can be easily attached to either D-ring located on the thermal imager.
As a gear strap, the strap can be attached to a D-ring on your turnout gear or SCBA and to a D-ring on
the thermal imager. A quick release buckle serves as a safety release mechanism in case the thermal
imager ever becomes lodged inhibiting movement. Simply depress the buckle and the thermal imager
releases from the strap.
Care Instructions
The Bullard T4 Thermal Imager requires little maintenance. For best results, after each use:
• Clean the outside of the unit with mild soap or detergent.
•Wipe the lens with a soft cloth.
• Clean the display with a soft cloth.
• Check screw tightness on side straps and cover display
• Store your thermal imager in the optional truck mount or in the delivery case provided.
• All thermal imagers should be maintained using a proper program.
Cleaning the Lens
The Bullard T4 lens is recessed in an impact resistant bezel. The lens can be cleaned with a soft cloth
and soapy water as required.
Replacing the Video Display Cover Window
The display cover (Figure 7) has a scratch resistant hard
coating to minimize marring. However, if heavy scratching or
gouging does occur, the cover window can be replaced. To do
this, simply remove the six screws along the top, bottom, and
sides of the window. Remove the plastic display cover window
and replace with a new one (part number T4WINDOW)
making sure that the countersink slots around the mounting
holes are facing outward. Do not over-tighten.
WARNING
Do not allow the metal contacts on the label side of the battery to come in contact with a conductive
surface, such as a metal table or another battery. This can complete the battery circuit and cause the
battery to overheat or melt. Failure to observe this warning may result in permanent battery damage,
property damage and/or serious injury.
Power Button
Zoom Button
Figure 2
Figure 3
WARNING
The T4 thermal imager is extremely sensitive to intense, radiant heat sources. Never point the T4 at
the sun or any other source of extreme radiant heat, as this could severely damage the thermal imager.
Figure 5
Side Strap
Strap Loop
Figure 6
Figure 7
CAUTION
Do not use solvents or paint thinners to clean your Bullard T4 Thermal Imager as they could
permanently mar the surface or degrade the protective properties of the casing.
Do not intentionally submerge the unit underwater or subject the unit to high pressure water. Follow
care instructions described above.
Failure to observe these instructions may result in product damage. Any damage caused by improper
care is not covered under warranty.