ARIBEX Nomad Pro 2 User manual

OPERATOR MANUAL
MANUFACTURED BY ARIBEX
Handheld X-ray System
for Intraoral Radiographic Imaging

DO NOT OPERATE THIS DEVICE UNTIL YOU HAVE READ THIS MANUAL and reviewed the
accompanying materials.
Disclaimer: NOMAD Pro 2 is sold with the understanding that the user assumes sole responsibility
for radiation safety (as well as any state, provincial, or local regulatory compliance) and that Aribex,
its agents or representatives, do not accept responsibility for:
a) injury or danger to personnel from X-ray exposure,
b) image over/under exposure due to poor operating techniques or procedures,
c) equipment not properly serviced or maintained in accordance with instructions
contained in this publication, and
d) equipment which has been damaged, modified, or tampered with in any way.
Aribex and NOMAD are registered trademarks within the United States and other countries.
NOMAD Dental, NOMAD Pro, NOMAD Pro 2, PORTA-X, and the ARIBEX and NOMAD logos
are trademarks of Aribex worldwide. Product protected in other countries by one or more issued
patents. U.S. patents issued: 7,224,769 and 7,496,178. Other United States and international
patents pending. All other brand and product names are trademarks or registered trademarks of
their respective companies.
Further information about Aribex intellectual property available: www.aribex.com

Ionizing Radiation
Attention, consult instructions for use
Recycling/instructions for handling product at end of life
Dangerous Voltage, Electrical Shock Hazard
Do not spray disinfectant or cleaners directly on the NOMAD
Pro 2, handset, charger cradle or AC power supply
Manufacturer of the device
Date of device manufacture
Model number or corresponding name
Unique serial number for the device
Reference to a radiation filter or a value of filtration
Type BF Equipment (providing a degree of protection against
electric shock, pertaining particularly to allowable leakage
currents)
Power supply positive/negative orientation
Conformity marking indicating that product meets
requirements to be sold in the European Union (EU)
Marking indicating that product is compliant with certain
North American safety standards
Power button, used to power on/off device
Audible signal, indicating audible cues emitted by device
during operation
REF
SN
The symbols used in this publication or used to mark the equipment have the
following meanings:

Table of Contents
1.0 Getting Started 6
1.1 Intended Use/Indications for Use 6
1.2 Unpack, Check, and Register NOMAD Pro 2 System 6
1.3 Charging the Handsets 7
2.0 Safety Precautions 8
2.1 Radiation Safety 8
2.2 Studies and Data on Leakage and Scatter 10
2.3 Usage and Duty Cycle 12
2.4 Cleaning 13
2.5 Security, Storage, and Transportation 13
3.0 Setup and Power Check 15
3.1 The Backscatter Shield 15
3.2 Attaching a Charged Handset 15
3.3 Checking for Power 15
3.4 Optional Checks 16
4.0 Operation 17
4.1 Powering Up 17
4.2 Lock/Unlock the X-ray 17
4.3 Ensuring the Right Exposure Time is Set 17
4.4 Ready the Device 18
4.5 Initiating and Completing an X-ray Exposure 19
4.6 Powering Off 19
4.7 Exposure Techniques 20
4.8 Ensuring Image Quality 21
4.9 Technique Factors Settings and Adjustments 22
4.10 Settings Menu 23
5.0 Handset Replacement and Care 25
6.0 NOMAD Pro 2 Care and Upkeep 26
6.1 Alarms and Alerts 26
6.2 Troubleshooting 29
7.0 Maintenance and Repair 31
7.1 Maintenance Schedule 31
7.2 Optional Calibration Checks 33
7.3 Maintenance Log Sheets 34
7.4 Repair 35
8.0 Technical Description 36
8.1 Basic Technical Specifications 36
8.2 X-ray Tube Specifications and Characteristics 38
8.3 EMC Data 41

Thank you for choosing the Aribex NOMAD Pro 2 as your X-ray solution!
At Aribex we value your business and we would like to hear from you because your
feedback and suggestions are important to us. If you have comments, please email
us: [email protected]
NOMAD Pro 2 Features:
• Performance – Battery power source delivers dependable high voltage (60kV, true DC)
and direct current (2.5mA).
• Consistent Emission Radiation – High-frequency, constant-potential X-ray generator
provides high quality images, with a lower radiation dosage to the patient
than standard AC X-ray systems. (See Compendium Report, May 1993, Vol. XIV, No. 5,
“X-Radiation: Potential Risks and Dose Reduction Mechanisms.”)
• Radiation Protection – Operator shielded from source and backscatter radiation.
• Simple Operation – By selecting patient size, receptor type and tooth type, the factory
pre-set exposure time is digitally displayed on the user-friendly control panel along with
indicators for machine and battery status.
• Lightweight and Ergonomic – Design provides complete flexibility and convenience,
enabling exposures without moving the patient to the X-ray source.
• Exposure Safety Feature – Cannot emit X-rays with insufficient voltage (low battery).
• Engineered for Compatibility – Works with film, digital, and phosphor plate imaging
systems.
• Infrared Communication – IR technology used to facilitate reliable communication
between device head, battery handset, and charging cradle.
• Authorized Service – Complete support and maintenance from Aribex and through
our authorized distributors.
• X-ray Locking Feature – Enables the safe training, demonstration, and storage of
the device without undue concern related to unintended or unauthorized radiation
emission.
• Two Product Color Options – Black body with gray accents, in addition to standard
color scheme, offers a variety of choices for complementing office décor.

6
1.0 Getting Started
1.1 Intended Use/Indications for Use
The NOMAD Pro 2 X-ray System is designed to be used for both adult and pediatric
patients by trained dentists and dental professionals for producing diagnostic dental X-ray
images.
Caution: U.S. Federal law restricts this device to sale by or on the order of a
physician or other licensed practitioner.
1.2 Unpack, Check, and Register NOMAD Pro 2 System
nUnwrap individual components from the protective plastic and check for any
noticeable signs of damage. The package system includes the following items:
• NOMAD Pro 2 Device
• 2 Handsets (08500087 for standard, 08500088 for black)
• Charging Cradle and the AC/DC Power Supply (08500102 for standard, 08500103 for
black; other cord sets available upon request)
• Certificate of Conformance, Getting Started Guide, Product Registration Card, and
NOMAD Pro 2 Operator Training CD
oPreliminary Checks:
Item Check
Device Labels Verify that the serialized device label is in place (located on lower side of
unit).
Other Labels Verify that the serial number on the product registration card matches
the device serial number on the device and the device serial number on
the carrying case. Verify that the handsets’ label (located on the top of
each handset) and the charging cradle label (located on the bottom of the
charging cradle) are all in place.
Collimator Cone and
Backscatter Shield
These two items provide operator protection and should be inspected for
shipping damage.
Trigger Switch Should freely move in and out when depressed and released.
Device Housing Should be free of cracks or fractures.
pComplete the product registration card and mail it with proper postage to Aribex
today, or go on-line at aribex.com/portable-x-ray-machine/warranty-registration.
Registering your device will activate your NOMAD Care Plan (the first year is free).
For terms and conditions of the NOMAD Care Plan, visit nomadcareplan.com/
termsandconditions.

7
1.3 Charging the Handsets
• Handsets must be charged before initial use! Alternate handsets each week to
maximize service life.
• Do not spray disinfectant or cleansers directly on to the handsets!
• It is recommended to fully recharge handsets every three months while in long-term
storage to ensure that no low battery becomes damaged.
nUse only the supplied AC/DC power supply (or other
Aribex-supplied cord set). Unwrap the power cord of the
power supply and connect it to the charging cradle, then to
an AC electrical outlet (universal voltage accommodated).
The single green circle on the charging indicator will
illuminate green if there is adequate power to the charging
cradle. If the green circle does not illuminate, the charging
cradle is not receiving adequate power and may need to
be sent to an Aribex authorized service center for repairs.
Position the charging cradle away from the normal patient environment. A plug adapter
may be needed to accommodate the local AC configuration.
oInvert one of the handsets and carefully slide it onto the charging cradle (do not force
the handset onto the charging cradle or damage may result). Expect charge time to be less
than three hours. The handset, charging cradle, and AC power supply may become warm
to the touch while charging.
pWhen the handset is first slid onto the charging
cradle, the first bar will illuminate green for approximately
two seconds to indicate that the cradle and handset are
communicating. If the first bar illuminates green, but then
all of the bars illuminate red, the charging cradle and/or
handset will need to be sent to an Aribex authorized service
center for repairs or replacement. Authorized service will
also be required if no illumination occurs upon sliding the
handset onto the charging cradle.
q After illuminating green, the first bar will begin flashing to indicate that charging has
begun. When the first bar turns solid green, the handset is 1/3 charged, and the second
bar will begin flashing green. When the second bar turns solid green, the handset is 2/3
charged, and the third bar will begin flashing green. Once the third bar turns solid green,
the handset is fully charged. Remove the handset from the charging cradle once it is
fully charged.
Handset 1/3 charged Handset fully chargedHandset 2/3 charged
Receiving adequate power
Contact Aribex for service

8
2.0 Safety Precautions
2.1 Radiation Safety
The NOMAD Pro 2 was designed to be used in both clinical settings (e.g., a dental office)
and controlled settings where transportation or use of other X-ray devices might be
prohibitive due to the device’s size and/or mobility.
This X-ray unit may be dangerous to patient and operator unless safe exposure factors,
operating instructions, and maintenance schedules are observed.
This X-ray unit must only be operated by trained personnel in a controlled setting.
Within such a setting, ensure that only the patient is in the direct beam of the x-ray,
and that any ancillary personnel are a minimum of 6 feet away from the patient. If it is
necessary for any ancillary personnel to be closer than 6 feet, these personnel should
stay out of the direct beam and wear personal protective equipment, such as an apron
and thyroid collar.
• The NOMAD Pro 2 provides a high degree of
protection from unnecessary radiation. However, no
practical design can provide complete protection nor
prevent operators from exposing themselves or others
to unnecessary radiation. It is important to restrict
use and follow all applicable government radiation
protection regulations. Pregnant women should not
be exposed to X-rays unless necessary. Proper safety
precautions should be taken to minimize dose to the
fetus.
• Operators must be fully acquainted with industry
safety recommendations, established maximum
permissible doses, and local jurisdiction requirements
for use.
• Optimal operator protection from radiation
backscatter exists when the following measures are
taken:
a) the backscatter shield is positioned at the outer end
of the collimator cone,
b) the backscatter shield is close to the patient,
c) the patient tilts his or her head when needed to
accommodate exposures (see Section 4.7 Exposure
Techniques), and
d) the operator remains within the significant zone of
occupancy immediately behind the device shield.

9
• Do not enable the NOMAD Pro 2 until patient and operator are positioned and ready
for the exposure, preventing interruption and inadvertent exposure of anyone to
X-rays.
• Do not attempt an exposure if anyone other than the patient is in the direct beam. If
others are assisting, then they should wear protective covering as required by local
jurisdictions. An apron and thyroid collar are recommended for ancillary personnel
who are closer than 6 feet to the patient.
• When selecting and using sensors, preference should be given to models that allow
the backscatter shield to remain at the outer end of the collimator cone for maximum
operator protection.
• An exposure can be terminated for any reason by prematurely releasing the depressed
trigger (for more information, see Section 4.0 Operation).
• As shown in graphic representations, maximum protection (green area) from
backscatter radiation (red area) exists when the NOMAD Pro 2 is positioned near the
patient, is perpendicular to the operator (with the patient’s head tilted if needed),
and the backscatter shield is fully extended toward the patient and parallel to the
operator.
Stay in the
ZONE
Proper Position Held Back Shield slid back Non-perpendicular
PROTECTION:MAXIMUM MINIMIZED
• Operation outside the protection zone (or with a diminished protection zone) requires
proper precautions such as the use of an apron and thyroid collar, according to
requirements of local jurisdictions.
• Do not operate if the backscatter shield or collimator cone is broken!
• For further information on the tests performed to ensure NOMAD Pro 2 safety as a
handheld device, please see Section 2.2 Studies and Data on Leakage and Scatter.
In implementing a radiation protection program, consult all applicable regulations
governing radiation protection and the use of X-ray equipment, and ensure full
compliance with any such regulations.

10
2.2 Studies and Data on Leakage and Scatter
Besides direct beam, potential exposure from X-ray devices has only two other possibilities:
1) leakage radiation and
2) scatter radiation from the patient/
subject in the direct beam.
Leakage
Unique internal shielding of NOMAD
Pro 2 encases the X-ray tube, practically
eliminating leakage radiation. This makes
it safe to use Pro 2 as a handheld device
during exposures. As demonstrated by
Chart 1, NOMAD Pro 2 hand and extremity
annual levels are less than 0.1% of the
annual occupational dose limit.
CHART 1: Comparative Data for Hand and Extremity Exposure (Annual)
500mSv Occupational Dose Limit1
50mSv Occupational Dose Limit Requiring Dosimetry1
0.43mSv Average Exposure Using NOMAD with D-Speed Film2
0.22mSv Average Exposure Using NOMAD with F-Speed Film or Digital Sensor2
1) Standards for Protection against Radiation, 10 CFR 20 (US Federal Standards), 1994. See also NCRP Report No.
116 and Suggested State Regulations for Control of Radiation D.1201).
2) “Radiation Exposure with the NOMAD Portable X-ray System,” Goren AD et al, Dentomaxillofacial Radiology, 37
(2008), S.109-12; normalized average (includes leakage and backscatter radiation) assumes 7,200 exposures per
year, and the average length of exposure for D-speed = 0.50 seconds, F-speed = 0.25 seconds, digital sensor =
0.20 seconds.
FDA regulations specify that leakage radiation from X-ray devices not exceed 0.88mGy/hr,
while IEC regulations stipulate that devices stay below 0.25mGy/hr, an even tighter limit.
In response to these regulations, Aribex will only ship product that tests below 0.02mGy/hr for
leakage, a self-imposed requirement 44 times more stringent than FDA regulations and
12.5 times more stringent than IEC regulations.
In order to verify compliance with this leakage requirement, each individual device is
tested with a calibrated survey meter at 12 points on the device housing, as shown in the
following diagram. The highest measurement out of these 12 points is reported on the
device Certificate of Conformance (which is shipped with every device) and must be lower
than 0.02mGy/hr in order for the device to successfully pass product release testing.
X-ray Source
Focal Spot
Primary Protective
Shielding
Backscatter
Radiation
Shielding
Fixed Beam
Limiting Device

11
Scatter
As discussed in Section 2.1 Radiation Safety, the transparent shield on the NOMAD Pro 2
collimator, when properly oriented, acts as a barrier against backscatter radiation, making
it safe for the operator to stay in the room. As demonstrated by Chart 2, NOMAD Pro 2
whole body annual levels are less than 0.6% of the annual occupational dose limit.
CHART 2: Comparative Data for Whole Body Exposure (Annual)
50mSv Occupational Dose Limit1
5mSv Occupational Dose Limit Requiring Dosimetry1
3.65mSv Average Natural Background Radiation2
2.19mSv Average Occupational Radiation Exposure for Flight Crews3
1.00mSv General Public Dose Limit1
0.20-0.70mSv Range of Exposure for Dental Personnel Using Conventional X-rays2
0.30mSv Average Exposure Using NOMAD with D-Speed Film4
0.12mSv Average Exposure Using NOMAD with F-Speed Film or Digital Sensor4
1) Standards for Protection against Radiation, 10 CFR 20 (US Federal Standards), 1994 (see also NCRP Report No.
116 and Suggested State Regulations for Control of Radiation D.1201).
2) NCRP Report No. 145 (National Council on Radiation Protection and Measurements), p7-9.
3) “Estimated Cosmic Radiation Doses for Flight Personnel,” Feng YJ et al, Space Medicine and Medical
Engineering, 15(4) 2002, p265-9.
4) Normalized average assumes 7,200 exposures per year, and the average length of exposure for D-speed =
0.50 seconds, F-speed = 0.25 seconds, digital sensor = 0.20 seconds.
The significant zone of occupancy for operators has been further verified by internal
testing. A NOMAD device was remotely fired into a water phantom repeatedly, with an
ion chamber recording radiation readings at 336 points in the room, first to establish the
vertical significant zone of occupancy and then to establish the horizontal significant zone
of occupancy. Each exposure was taken at 1.00 seconds in order to simulate “worse case
scenario” results. As seen in the following graphed information, the vertical significant
zone of occupancy measures 60 cm X 200 cm, while the horizontal significant zone of
occupancy is 60 cm X 60 cm.
Test points for product release testing
axis
axis

12
For further information on these tests, please contact Aribex.
Handheld as Safe as Wall Mount?
Due to the design of the NOMAD, operators using the device tend to experience an
average monthly radiation dose about 28 times lower than that of operators using wall-
mounted systems.1Not only is the NOMAD as safe as a wall-mount device, in some cases
it appears to be even safer.
2.3 Usage and Duty Cycle
As a safety feature, the NOMAD Pro 2 will not emit X-rays with insufficient voltage (low
battery).
The NOMAD Pro 2 is also designed to avoid damage from overheating. The minimum duty
cycle rating for maximum exposure (the relationship between duration and frequency of
exposures taken during a rolling 60 second period) is 1:60. This duty cycle is programmed
into your NOMAD Pro 2. The following table shows examples of optimal use:
Exposure Duration 0.09 sec 0.20 sec 0.40 sec 1.00 sec
Hypothetical Time
Between Exposures 6 seconds 12 seconds 24 seconds 60 seconds
Exposures Per Minute >10 >8 >2 1
1 “Dental Staff Doses With Handheld Dental Introral X-ray Units,” JE Gray, ED Baily, JB Ludlow, Health Physics Society
102.2 (2012), P. 137-142.
Vertical Plane, Significant Zone of
Occupancy: 60 cm x 200 cm
Horizontal Plane, Significant Zone of
Occupancy: 60 cm x 60 cm

13
Do not operate the NOMAD Pro 2, the handset, charging cradle, or AC power
supply if equipment was subjected to moisture (wetting, immersing, or soaking).
Return to Aribex or authorized service center for service.
• Do not open the housings. There are no user serviceable parts inside the NOMAD
Pro 2, handset, charging cradle, or AC power supply.
• The NOMAD Pro 2 should not be used in environments where flammable cleaning
agents are present.
• Locate the charging cradle away from the normal patient environment.
2.4 Cleaning
nUse a non-acetone based disinfectant wipe (with less than 17% alcohol content) or a
cloth to wipe the exterior surfaces of the NOMAD Pro 2 and charger. Do not use cleaners
intended for hard surfaces, since certain chemical combinations may deteriorate the
NOMAD Pro 2 plastic prematurely.
oLeave the handset connected to the NOMAD Pro 2 and wipe down all surfaces of the
device.
pUnplug the charging cradle before cleaning.
NOTE: The NOMAD Pro 2, the handsets, the charging cradle, and the AC power supply
are not designed to be subjected to any kind of sterilization procedure.
Do not spray disinfectant or cleaners directly on the NOMAD Pro 2, handsets, charging
cradle, or AC power supply. The connecting areas are open to ingress and damage to
your device may result.
2.5 Security, Storage, and Transportation
• Do not store the NOMAD Pro 2, handsets, charging cradle, or AC power supply in
extreme conditions: below –20°C or above +60°C, or beyond 95% relative humidity
(non-condensing). The optimal storage location is cool, dry, and away from direct
sunlight.
• Aribex recommends that the NOMAD Pro 2 (like all electronic equipment) be allowed
to acclimate before use when switching between temperature extremes (i.e., cold
storage area to a warm use area or hot storage area to a cool use area).
• When finished for the day with the NOMAD Pro 2, detach the handset.
• The X-ray Lock and Unlock (Section 4.2) serves as the device security key to prevent
unauthorized use. In addition, it is recommended that the device be locked away when
not in use. For a further level of security, securely store handsets in a separate location.
• Take steps to ensure the NOMAD Pro 2 will not be knocked to the ground when not in
use. Lay it on its top, side, or in the accessory tabletop stand (08500037). Power will
automatically shut off after a period of inactivity (approximately three minutes).

14
• Some battery charge may be lost during extended inactivity (leading to fewer
exposures between handset charging cycles).
• The NOMAD Pro 2 should not be operated if it has been dropped or if performance
degrades; it should be returned to Aribex or an authorized service center for an
evaluation.
• When finished for the day with the NOMAD Pro 2, detach the handset.
• For long-term storage, it is recommended to fully recharge the handsets every three
months.

15
3.0 Setup and Power Check
3.1 The Backscatter Shield
In addition to the radiation shielded cone, the backscatter shield provides additional
protection to the operator and can be adjusted to permit exposures made at various
angles.
nIdeally, the shield should remain fully extended to the outer edge of the cone, as close
to the patient as possible during each image
taken (see Section 2.1 Radiation Safety).
oYou may find that the backscatter shield
needs to be adjusted to accommodate
sensors or angled exposures. If adjustments
are needed, gently glide the shield up or
down along the cone using equal pressure to
maintain a perpendicular alignment and to
avoid binding.
pTo keep the shield securely on the cone, a cap is permanently attached at the
outer cone end. Do not attempt to remove this cap or to remove the backscatter shield.
Attempting to do so will result in damage to your device.
3.2 Attaching a Charged Handset
nWith the NOMAD Pro 2 placed
bottom up on a secure surface,
properly orient and carefully slide
the charged handset onto the base
of the NOMAD Pro 2. (A properly
oriented handset should click into
place with firm pressure.)
oThe clicking sound ensures the
locking mechanism has secured
the NOMAD Pro 2 to the handset.
To verify this lock, apply slight
pressure in the release direction.
There are electric voltages present at the handset terminals. Protect the handset from
damage; do not probe with fingers or conductive objects.
3.3 Checking for Power
nAfter locking a handset in place press the Power button.
oThe display panel will activate with a battery power level icon in the upper right
corner. Five bars is an indication of a fully charged handset.

16
pIf the battery charge is too low, the NOMAD Pro 2 will
not emit an X-ray and the Recharge Handset alarm will
display.
qWhen a battery is depleted to the single bar level
it is recommended the handset be recharged. Remove
the handset from the charging cradle once it is fully
charged.
rReplace a low charge handset with the secondary
handset (which should be charged in advance). It is
recommended that you keep one handset fully charged at
all times to ensure continuous operation.
3.4 Optional Checks
The NOMAD Pro 2 is factory calibrated and tested prior
to release (see your Certificate of Conformance). A self-
diagnostic is completed each time an exposure is taken.
However, the optional checks listed below may be performed periodically as desired. Some
locations may require initial and periodic checks as a condition of use.
The NOMAD Pro 2 has an X-ray disable feature that allows the X-rays to be disabled for
training purposes. Test firing this X-ray unit may otherwise be dangerous to the testing
technician or bystanders. See Section 4.2 for more information.
• Power On/Off: Attach a fully charged handset to the NOMAD Pro 2 device. Press the
Power button and verify that the device correctly powers on and off.
• Increase/Decrease Exposure Time: With the device on, select the patient size,
the image receptor type, and the tooth type. The exposure time corresponding to
the selections will display on-screen. Press the Increase and the Decrease
buttons, and verify that the exposure time changes appropriately. When the
Increase or Decrease buttons are pressed and held, the rate at which the
displayed time setting changes on screen accelerates.
• Triggering: With the device on and an exposure time selected, press and release
the trigger once. This will ready the device, and the display will indicate the Ready
state. To end the Ready state, press any button on the user interface panel or wait
approximately 15 seconds for the timeout.
• Automatic Shut-down: With the device on, allow approximately three minutes of
inactivity to pass for the system to automatically shut down.
The NOMAD Pro 2 should not be operated if it has been dropped or if performance
degrades; it should be returned to Aribex or an authorized service center for an evaluation.
(See Section 6.1 Alarms and Alerts for more information.)
Recharge Handset Alarm

17
4.0 Operation
4.1 Powering Up
NOTE: The manufacturer’s recommendation is for the operator to wear nitrile or other
gloves during basic operation of the NOMAD Pro 2.
Press and release the Power button to turn on NOMAD Pro 2. An audible double
tone and an active display panel indicate the device has power.
Technique factors are redisplayed according to what was displayed when the device was
turned off, along with the last saved time setting.
4.2 Lock/Unlock the X-ray
The X-ray lock and unlock
functionality can be activated to
prevent unauthorized use when the
NOMAD Pro 2 is idle or stored. This
functionality may also be used for
training purposes.
To lock the X-ray, first press and hold
the Select button while pressing
the Patient button. The device shifts
into an X-rays Locked state, and the
buttons can be released. Repeat the
process to unlock the X-ray device.
NOTE: If the Select button is held
down for longer than 3 seconds
before the Patient button is pressed, the Menu mode will
activate; if the Select button is pressed and released before the Patient button is
pressed, the Save menu is displayed.
4.3 Ensuring the Right Exposure Time is Set
When power is turned off, the most recent setting for the exposure time is stored in the
memory and redisplays when power is turned back on. However, if the battery is replaced,
the display is reset to the default value.
To change exposure settings press each of the buttons to toggle through the choices:
1) the Patient Size (adult or child)
2) the Image Receptor (film, phosphor plate, or sensor)
3) the Tooth Group (anterior, posterior, or bitewing)
X-ray is unlocked X-ray is locked

18
Examples from factory default settings:
Child, Sensor, and Anterior = 0.09sec
Adult, Film, and Posterior = 0.38sec
When necessary, use the Increase or Decrease buttons to adjust the time in 0.01 second
increments. Adjusted exposure settings may be saved, replacing factory settings (see
Section 4.9 Technique Factors Settings and Adjustments).
4.4 Ready the Device
To prevent accidental radiation exposure, properly position the patient and operator
before readying the NOMAD Pro 2.
Press and release the trigger once to ready the device. The device will briefly display an
Enabling X-rays message before indicating Ready.
NOTE: As a safety precaution, if the trigger is held longer than one second or pulled
a second time while still in the Enabling X-rays state, the device will not transition to
the Ready state. (This is to prevent an accidental activation of the device by unintended
triggering.)
The illuminated green LED, the
message Ready on the display panel,
and a double tone alert confirm that
NOMAD Pro 2 is prepared to fire
X-rays. The Ready state continues
until either an exposure is initiated
or timeout occurs after 15 seconds of
inactivity (accompanied by a double
tone and the return to the at-rest
state).
While the device is in the Ready
state, any changes to the settings
(pressing any user interface panel
button) will end the state. Enabling X-rays Alert Ready Alert

19
4.5 Initiating and Completing an X-ray Exposure
To begin the exposure, press and
hold the trigger. The Ready alert is
replaced with the X-rays On alert,
the green LED is replaced with a
yellow LED, and there is an alert tone
for the duration of the exposure.
To ensure complete exposure, keep
the trigger depressed until the audible
tone is complete, the yellow LED is off,
and the X-ray Complete alert briefly
displays. The device then returns to
the at-rest state.
NOTE: An exposure can be
terminated for any reason by
prematurely releasing the depressed
trigger.
4.6 Powering Off
Press and release the Power button to turn NOMAD Pro 2 off.
The NOMAD Pro 2 also automatically shuts off after approximately three minutes of
inactivity.
The NOMAD Pro 2 display darkens, accompanied by a tone to indicate shut-down.
X-rays On Alert X-ray Complete Alert

20
4.7 Exposure Techniques
As an intra-oral dental X-ray system, the NOMAD
Pro 2 can be easily positioned. This high degree of
flexibility makes it easy to take exposures while the
patient is reclined, lying completely on their back,
or sitting upright. Ensure the patient is protected
by using an apron.
n When taking images, operators may hold
the NOMAD Pro 2 by having both hands on the
handset grip, or, for increased stability and patient
safety, by placing one on the grip and the other
on the underside of the housing (but not on the
collimator cone).
oPosition the NOMAD Pro 2 relative to the
imaging system to minimize cone-cutting. (If your
practice uses film holding kits or aiming devices,
check compatibility in advance.)
pExposure times increase proportionally when
the imaging angles vary away from 90° (or
perpendicular) to the film or sensor. To maintain
low patient X-ray doses and to keep the operator
within the protection zone, have the head of the
patient slightly tilted, and/or raise or
lower the chin as needed. (See Section 2.1
Radiation Safety.)
qWhen the device must be angled and the
operator cannot be completely within the protection zone, ensure operator protection
through the use of proper safety measures, such as the use of an apron. (See Section 2.1
Radiation Safety.)
rAvoid touching the patient with the cone or backscatter shield; disposable plastic
coverings can be used to prevent cross-contamination.
sDetermine what NOMAD Pro 2 exposure time settings deliver optimal results for the
type of imaging (digital or film-based) that is used on a regular basis.
NOTE: Both digital imaging sensors and film and phosphor plate speeds can vary
somewhat in their characteristics and could require different exposure settings to meet
density preference. (See Section 4.10 Settings Menu for more information.)