ARIBEX Nomad Examiner User manual
Portable X-ray System for
Small Area Radiographic Imaging
USER MANUAL
Disclaimer: NOMAD eXaminer 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, Inc., its agents or representatives, do not accept responsibility
for:
a)
injury or danger to personnel from x-ray exposure,
b)
image overexposure 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 modified or tampered with in any way.
DO NOT OPERATE THIS DEVICE UNTIL YOU HAVE READ THIS
MANUAL and reviewed the accompanying materials.
See the Certificate of Conformance accompanying your device. A Radiation Safety
Abbreviated Report is submitted and on file in order to register NOMAD eXaminer in
accordance with DHHS Manufacturer Reporting Requirements, 21 CFR 1002.12.
Aribex and NOMAD are registered trademarks within the United States and other countries.
NOMAD eXaminer,NOMAD Dental, and the ARIBEX and NOMAD logos are trademarks of
Aribex, Inc. worldwide. U.S. patents issued: 7,224,769 and 7,496,178. United States and
international patents pending. All other brand and product names are trademarks or registered
trademarks of their respective companies.
The symbols used in this publication and used to mark the equipment
have the following meanings:
Caution or Attention, review documentation
Ionizing Radiation
Electrical Shock Hazard
Instructions for handling product at end of life
Type BF Equipment (providing a degree of protection against electric
shock, pertaining particularly to allowable leakage currents)
NOMAD®
eXaminer
USER
MANUAL
Table of Contents
1.0 Getting Started ................................................................................................................................. 1
1.1 Intended Use ..................................................................................................................... 1
1.2 Unpack, Check, and Register NOMAD ............................................................................. 1
1.3 Charging the Battery ......................................................................................................... 2
2.0 Safety Precautions ........................................................................................................................... 3
2.1 Radiation Safety ................................................................................................................ 3
2.2 Usage ................................................................................................................................ 5
2.3 Cleaning ............................................................................................................................ 6
2.4 Security, Storage, and Transportation .............................................................................. 6
3.0 Setup and Check ............................................................................................................................. 7
3.1 The Backscatter Shield ..................................................................................................... 7
3.2 Attaching a Charged Battery ............................................................................................. 8
3.3 Checking for Power and Adequate Charge ...................................................................... 8
3.4 Optional Checks ................................................................................................................. 9
4.0 Operation ....................................................................................................................................... 10
4.1 Powering Up .................................................................................................................... 10
4.2 Ensuring Battery Charge Is Adequate ............................................................................ 10
4.3 Ensuring the Right Exposure Time Is Set ....................................................................... 10
4.4 Positioning Subject and Enabling the Device ................................................................. 11
4.5 Initiating and Completing an X-ray Exposure ................................................................. 11
4.6 Powering Down ............................................................................................................... 11
5.0 Battery Replacement ..................................................................................................................... 12
6.0 Keeping NOMAD Up and Running ................................................................................................ 13
6.1 Alarms and Alerts ............................................................................................................ 13
6.2 Troubleshooting .............................................................................................................. 15
6.3 Repair and Maintenance ................................................................................................. 17
7.0 Technical Description .................................................................................................................... 18
7.1 Basic Technical Specifications ........................................................................................ 18
7.2 Functional Diagram ......................................................................................................... 19
7.3 X-ray Tube Specifications and Characteristics ............................................................... 20
7.4 EMC Data ........................................................................................................................ 22
7.5 Optional Calibration Checks ............................................................................................ 24
Limited Warranty ....................................................................................................................................... 25
Thank you for choosing the Aribex NOMAD®as your x-ray solution!
At Aribex we value your business and we would like to hear from you, because your
feedback or suggestions are important to us. If you have comments, please email us:
NOMAD@aribex.com
NOMAD eXaminer Features
¾Performance – battery power source delivers dependable high voltage (60kV, true DC)
and direct current (2.3mA).
¾Consistent Emission Radiation – high-frequency, constant-potential x-ray generator
provides high quality images, with a lower radiation dosage than many standard AC x-ray
systems.
¾Radiation Protection – operator shielded from source and backscatter radiation.
¾Simple Operation – exposure time is the only setting requiring operator input, digitally
displayed on the user-friendly control panel along with indicators for machine and battery
status.
¾Lightweight and Ergonomic – design provides complete flexibility and convenience.
¾Exposure Safety Feature – cannot emit x-rays with insufficient voltage (low battery).
¾Engineered for Compatibility – works with both film and digital imaging systems.
¾Authorized Service – complete support and maintenance from Aribex and our authorized
distributors.
USER MANUAL..
1
1.0 Getting Started
1.1 Intended Use
The NOMAD eXaminer X-ray System is intended for general, non-medical use – materials imaging,
industrial inspection, pathology/forensics, and veterinary care that requires small-area radiographic
imaging. The use of NOMAD eXaminer on live humans is expressly prohibited by regulation.
1.2 Unpack, Check, and Register NOMAD
nUnwrap individual components from the protective plastic and check for any noticeable signs of
damage. The standard package system includes the
following items:
¾NOMAD Device with a Backscatter Shield
attached
¾2 Charged Batteries
¾Battery Charger (the charger should be
appropriate for local AC line voltage, actual
color/style/model may differ)
¾Certificate of Conformance, Getting Started
guide and Battery Charger manual, Warranty
Card, and NOMAD Operator Training CD
oPreliminary Checks:
Item Check
Device Labels
Verify that the device labels (Serial Number Label on lower side of unit in
front of the handle and Warning Label on the lower side behind the handle)
are legible and in place.
Other Labels Verify that the serial number on the Warranty/Registration card matches the
device serial number and the device carrying case serial number.
Collimator Cone Inspect for damage. The lead lining must cover the entire interior surface.
Control Panel Should be smooth and free of nicks, scratches, or damage.
Trigger Switch
Should move freely in when depressed and out when released.
Device Housing Should be free of cracks or fractures.
NOMAD
2
pComplete the product Warranty/Registration card and mail it with proper postage to Aribex today.
Completing the card fulfills a condition of warranty coverage (see the inside back cover of this manual)
and enables you to receive valuable product news and updates.
1.3 Charging the Battery
NOTE: Batteries are charged at the factory, and should be fully recharged before the initial use
of the NOMAD. If the system has been in long-term storage prior to initial use, batteries will
definitely require a proper charge first. In fact, it is recommended to fully recharge batteries
every 3 months for long-term storage to avoid damage to any low battery. Actual
color/style/model may differ.
nUnwrap the power cord of the battery
charger and connect it to an AC electrical
outlet (110/120V or 220/240V, dictated by
the country/region).
Position the battery charger out of the way,
but in a convenient place. A plug adapter
may be used as needed; use only the
supplied battery charger (for manufacturer
and model info, see section 6.3, Repair and
Maintenance).
oInvert one of the batteries and carefully
plug it into the charger (do not force the
battery into the charger or damage to the
EDWWHU\PD\UHVXOW7KHUHGLQGLFDWRUOLJKWƁ
on the top of the charger will flash at a
steady rate while the battery is charging.
The required charge time varies (normally between 30 to 45 minutes). Battery and charger may
become warm to the touch while charging, which is a normal condition.
p:KHQ WKH EDWWHU\ LVIXOO\ FKDUJHG DQG UHDG\ WR XVH WKH LQGLFDWRU OLJKW Ɓ ZLOO VWRS IODVKLQJ DQG
remain on continuously. Remove the charged battery and charge the second battery for future use.
qOptimal battery life and performance occurs when the NiCad battery is fully discharged prior to
recharging. (For more information review the accompanying battery charger Instruction Manual, also
see section 5.0, Battery Replacement.)
USER MANUAL..
3
2.0 Safety Precautions
2.1 Radiation Safety
This x-ray unit may be dangerous to operator and bystander unless safe exposure
factors and operating instructions are observed.
Operators must follow all guidelines dictated by
applicable occupational safety regulations and in-
house radiation protection program, especially
in
regard to operators who are pregnant or expect to
become pregnant.
Operators must be fully acquainted with safety
recommendations and established maximum
permissible doses.
Optimal operator radiation backscatter protection
exists
when:
a) the operator remains within the cone-
shaped
backscatter protection zone immediately behind the
backscatter shield,
b)
the backscatter shield is positioned at the outer end
of the collimator cone,
c) the backscatter shield is close to a
subject when it is
immediately in front of the cone.
Do not enable NOMAD until subject is positioned
and
operator is
ready for the exposure, diminishing the
likelihood of interruption and preventing inadvertent
exposure of anyone to x-rays.
Do not attempt
an exposure if anyone else is in the
same room unless it is necessary that the subject
be
stabilized
by another person. That person must then
stay out of the direct beam and wear protective
clothing.
Operation outside the protection zone (or with a
dimini
shed protective zone) requires proper
precautions such as the use of lead aprons.
NOMAD
4
As shown in graphic representations,
maximum protection (green area) from
backscatter radiation (red area) exists
when the NOMAD is positioned near
the subject
, is perpendicular to the
operator, and the backscatter shield is
fully extended toward the subject.
An exposure can be terminated for any
reason by abruptly releasing the
depressed trigger (for more information
see section 4.0, Operation).
Do not operate with the backscatter
shield removed!
Proper postioning NOMAD held back Shield slid back Non-perpendicular
MAXIMUM
PROTECTION
MINIMIZED PROTECTION
NOTE:
In implementing a radiation protection program, please consult all applicable (state, provincial, and local) regulations
governing radiation protection and the use of x-ray equipment, and ensure full compliance with any such regulations.
Occupational Dose Limit1
50mSv
5mSv
Occupational Dose Limit Requiring Dosimetry1
Average Natural Background Radiation2
3.65mSv
2.19mSv
Average Occupational Radiation Exposure for Flight Crews3
Comparative Data for Whole Body Exposure (Annual)
1.00mSv
General Public Dose Limit1
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)
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
0.20–0.70mSv
Range of Exposure for Radiation Workers Using Conventional X-rays2
USER MANUAL..
5
2.2 Usage
As a safety feature, NOMAD will not emit X-rays with insufficient battery voltage.
The NOMAD is also designed to avoid damage from overheating. The minimum duty cycle rating (the
relationship between duration and frequency of exposures) is 1:60. Examples of optimal use:
Duration 0.25s 0.46s 0.50s 0.99s
Cycle Every 15 sec Every 28 sec Every 30 sec Every 60 sec
Do not operate NOMAD or the battery charger if either was immersed in liquid or
subjected to an undue amount of moisture.
Occupational Dose Limit1
500mSv
50mSv
Occupational Dose Limit Requiring Dosimetry1
Average Exposure Using NOMAD with D-Speed Film2
0.43mSv
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
)
2)
"Radiation Exposure with the NOMAD Portable
X
-ray System", Goren AD et al, Dentomaxillofacial
Radiology, 37 (2008), p109
-12; normalized
average (includes leakage and backscatter
radiation) assumes 7,200 exposures per year, and
the average length of exposur
e for D-speed = 0.50
seconds, F
-speed = 0.25 seconds, digital sensor =
0.20 seconds
Comparative Data for Hand and Extremity Exposure (Annual)
Subject
Plane
Fixed Beam
Limiting
Device
Source
to Skin
Distance
Geometrical
Radiation
Field Due to
Beam Limiting
Device
X-Ray Source
Focal Spot
Backscatter
Radiation
Shielding
Primary
Protective
Shielding
Permanent
Filtration
NOMAD
6
xThere are no user serviceable parts inside the NOMAD.
xDo not open the device housing. Doing so will void the warranty.
xNOMAD should not be used in environments where flammable cleaning agents are
present.
xLocate the battery charger out of the way, but in a convenient place (see section 5.0,
Battery Replacement).
2.3 Cleaning
nTurn off the power and detach the battery before cleaning. Ensure the battery charger is unplugged
before attempting to clean it.
oUse a non-acetone based disinfectant wipe or a cloth to wipe the exterior surfaces of the NOMAD
and charger.
NOTE: NOMAD and the accompanying battery charger are not designed to be subjected to any kind of
sterilization procedure.
2.4 Security, Storage, and Transportation
¾NOMAD must be kept in a secure location, such as a locked cabinet, when not in use to prevent
unauthorized access.
¾The battery serves as the device security key.When finished with NOMAD for the day, detach
the battery and lock it in a separate location to prevent unauthorized use.
¾Make sure NOMAD will not be knocked to the ground when not in use. Lay it on its side if
necessary. Power will automatically shut off after a period of inactivity (approximately 2.5 minutes).
¾Store or carry batteries so that metal objects cannot contact exposed battery terminals.
¾Do not store the NOMAD, battery charger, or batteries in extreme conditions: below –20°C (–4°F)
or above +40°C (+104°F), or above 95% relative humidity (non-condensing). This storage location
should be cool, dry, and away from direct sunlight. For more info about storage and operational
temperature limits, see section 7.1, Basic Technical Specifications.
¾Some battery charge may be lost during extended inactivity (leading to fewer exposures between
charging).
USER MANUAL..
7
xFor long-term storage, it is recommended to fully recharge batteries every 3 months.
3.0 Setup and Check
3.1 The Backscatter Shield
In addition to the lead-lined cone, the backscatter shield provides additional protection to you, the
operator, and features an adjustable position to permit exposures made at various angles.
nIdeally, the shield should remain fully extended to the
outer edge of the cone, especially if the subject to be
imaged is immediately in front of the cone (see 2.1,
Radiation Safety).
oYou may find that the backscatter shield needs to be
adjusted to accommodate position indicating devices or
angled exposures. If adjustments are needed, stand the
NOMAD on-end on a stable surface and, while holding
the backscatter shield perpendicular to the collimator
cone (tube-shaped cone), gently glide the shield up or
down along the cone using equal pressure to maintain a
perpendicular alignment and avoid binding.
pTo keep the shield securely on the cone a retainer
o-ring is permanently attached in the groove at the outer
cone end. Do not attempt to remove this o-ring or to
remove the backscatter shield, attempting to do so will
result in damage to your device.
NOMAD
8
3.2 Attaching a Charged Battery
nProperly orient and carefully insert the newly charged
battery into the base of the NOMAD handle. A properly
oriented battery should click into place without force (forcing
the battery into position may damage the battery and/or the
NOMAD). The clicking sound ensures the snaps on both sides
of the handle bottom are fastened.
oMake sure the battery is secure by giving it a tug.
NOMAD can then be placed into service after checking for
power (section 3.3).
pRead the battery charger instruction manual for complete
information on how to achieve the longest life and best
performance from your batteries.
3.3 Checking for Power and Adequate Charge
NOMAD Control Panel
n
After inserting a fully charged battery,
press and release the
POWER
button. The
numeric (LED) display should illuminate,
accompanied by a
single, long audible
signalÑ:.
oNOMAD checks for
sufficient battery
charge prior to a timed exposure, when
ENABLE
is pressed to ready the device.
pIf the battery is too low, the yellow
LOW
BATTERY
LQGLFDWRUƁDWWKHORZHUULJKWRIWKH
control panel will flash (accompanied by an
intermittent audible signalÑ:).
qOnce a battery is depleted, indicated by the
LOW BATTERY
alert, it must be recharged before use.
USER MANUAL..
9
rFor continued use, insert the secondary, replacement battery (which should be charged in
advance).
NOTE: See section 5.0, Battery Replacement, for more information.
3.4 Optional Checks
The NOMAD is factory calibrated and tested prior to release (see your Certificate of Conformance), so
there are no adjustment options. However, the optional checks listed below may be performed by a
qualified technician as desired.
Test firing this x-ray unit may be dangerous to the testing technician or bystanders
unles
s safe test exposure techniques are used such as the use a lead lined cap to cover
the end of collimator or test firing in a protected area.
ON/OFF Switch: Install fully charged battery to NOMAD device. Press the
POWER
button and verify the
ON and OFF conditions.
Increase/Decrease Switch (Up and Down Arrows): With the device turned ON, press each of the
Increase then Decrease buttons and verify that the exposure times as displayed on the LED display
change appropriately.
Enable Switch: With the device turned ON and the LED display set at 50 (500ms), press the
ENABLE
button and verify functional conditions. Wait approximately 30 seconds, at which point the enabled
condition should expire.
Automatic Shut-Off: Press the
POWER
button to turn the device ON and wait for it to automatically shut
off after approximately 2.5 minutes of inactivity.
See section 6.1, Alarms and Alerts, for more information.
NOMAD
10
4.0 Operation
4.1 Powering Up
Press and release
POWER
button to turn NOMAD on (after approximately
2.5 half minutes of inactivity, NOMAD shuts off automatically).
When the power is turned on a single, long audible signalÑ:
and an
illuminated numeric (LED) display indicate the unit has power.
example
4.2 Ensuring Battery Charge Is Adequate
If the
LOW BATTERY
LQGLFDWRU ƁIODVKHVDFFRPSDQLHGE\DQLQWHUPLWWHQW
audible signalÑ:, see sections 3.3,
Checking for Power and Adequate
Charge and 5.0, Battery Replacement.
For other error conditions, please see sections 6.1, Alarms and Alerts or
6.2, Troubleshooting.
4.3 Ensuring the Right Exposure Time Is Set
increase
decrease
When power is turned off, the most recent setting for exposure time is
stored in
memory and redisplays when power is turned back on.
(However, if the battery is replaced, the display is reset to the 00 default
value.)
To change exposure settings press the increase or decrease buttons (by
tenths / hundredths of a second). A single, short audible signalÑ:
confirms input when a button is pressed/released. (For example, 08 LED
setting = 0.08 seconds; 35 LED setting = 0.35 seconds.)
example
USER MANUAL..
11
4.4 Positioning Subject and Enabling the Device
Properly position the subject
and yourself before enabling NOMAD (to
prevent accidental exposure).
Press and release
ENABLE
to ready the device; be sure to re-enable
NOMAD if any subsequent changes are made to the time setting prior to
exposure.
The flashing, green
ENABLED
LQGLFDWRU Ɓ DQG DXGLEOH VLJQDOÑ:
(intermittent, double beep) confirm that NOMAD is enabled. This
continues for 30 seconds or until an exposure is initiated.
4.5 Initiating and Completing an X-ray Exposure
NOTE: An exposure can be prematurely terminated for any reason by
abruptly releasing the depressed trigger.
To begin the exposure, squeeze the handle trigger (or press and hold
START
). The
ENABLED
LQGLFDWRUƁVWRSVIODVKLQJDQGWKHJUHHQ
START
and yellow
X-RAYS ON
LQGLFDWRUVƁLOOXPLQDWH
To ensure complete exposure, keep the trigger or
START
button
depressed until the audible, continuous-tone signalÑ:
ends and both
LQGLFDWRUVƁDUHRII
4.6 Powering Down
Press and release
POWER
to turn NOMAD off. (NOMAD automatically
shuts off after approximately 2.5 minutes of inactivity.)
NOMAD
12
5.0 Battery Replacement
A flashing, yellow
LOW BATTERY
LQGLFDWRUƁFRQWUROSDQHODQGLQWHUPLWWHQWDXGLEOHVLJQDOÑ: indicate
the need for a freshly charged battery. NOMAD cannot emit X-rays with a low, depleted battery
(insufficient voltage). Follow these steps to clear the
LOW BATTERY
alert.
nPress and release
POWER
on the control panel to turn NOMAD
off.
oGrasp and depress the buttons on both sides of the battery to
release it from the handle. You may have to put pressure at the
very top of the buttons (nearest the handle). Then pull the battery
away from the handle.
pCarefully insert a newly charged battery into the base of the NOMAD handle. A properly oriented
battery should click into place without force (forcing the battery into position may damage the battery
and/or the NOMAD). A clicking sound ensures that the snaps on both sides of the handle bottom are
engaged. Make sure the battery is secure by giving it a tug. When a battery is detached, any stored
exposure time is erased from memory and must be reset when the unit is turned on again.
qAfter the initial 1-hour recharge, the charger will switch to Tune-Up Mode, which continues 8 hours
as cells in the battery are equalized. The battery is ready for use and can be removed at any time
during this mode. Always unplug the charger from the power supply when it is not in service. For
additional info, specifically about the charger, see the accompanying instruction manual for the battery
charger.
rBattery charge will diminish during extended inactivity – fully recharge batteries every 3 months
during inactivity. Never place a low battery into long-term storage.
sEach battery can go through the discharge/charge cycle approximately 200 times. When the
battery charger senses a bad battery, it is spent and must be taken out of service. Do not attempt to
charge damaged batteries. An authorized distributor, Aribex, and your local recycling center will accept
spent or damaged batteries. Order new 14.4V batteries from Aribex or your authorized distributor. Do
not use batteries from other sources, which invalidates the warranty.
Risk of Shock – There is high electrical current present at the battery charger terminals.
Do not probe with fingers or conductive objects.
USER MANUAL..
13
6.0 Keeping NOMAD Up and Running
6.1 Alarms and Alerts
The visual/audible alarm signals a programmed action designed to prevent harm to operator,
bystanders, and/or NOMAD.
The visual/audible alerts confirm normal conditions or draw the operator’s attention to a required action.
Condition
Visual Indicator Ɓ
Audible Signal
Ñ:
Function / Resolution
Overheating
Alarm
LED display begins
flashing Series of long
beeps
Operation suspends if the device
overheats; after cooling for
approximately 5 minutes (or
longer depending upon room
temperature), power on (see Duty
Cycle in section 2.2, Usage)
Low Battery
Alert
Yellow
LOW BATTERY
indicator flashes Slow series of short
beeps
Replace the battery and reset
exposure time (for information see
section 5.0, Battery Replacement)
X-ray
Exposure
Alert
Green
START
and yellow
X-RAYS ON
indicators
illuminate Continuous tone
(for the duration
of the timed
exposure)
At the end of the successful
exposure, audible signal and
indicators stop
Incomplete
Exposure
Alert
Green
START
and yellow
X-RAYS ON
indicators flash Series of long
beeps
Activates if trigger is released
before the timed x-ray exposure
finishes and ends automatically
after 15 seconds or if power is
manually turned off/on
System
Readiness
Alert
Green
ENABLED
indicator
flashes Slow series of
short, double beeps
Activates when
ENABLE
is
pressed/released; ends
automatically after 30 seconds or
when an exposure starts (trigger is
depressed or
START
is pressed)
NOMAD
14
Condition
Visual Indicator Ɓ
Audible SignalÑ:
Function / Resolution
Invalid Input
Error
Alert
N/A Two short beeps
Invalid input (for example,
triggering prior to enabling)
activates alert, which then ends
automatically
Valid Input
Alert
For numeric LED display,
time setting increments or
decrements
Single short beep Valid when panel button is
pressed/released
System
Alert
Alert
LED display turns off Two short beeps X-ray emissions are not detected
during timed exposure but the
battery is OK
Followed by a system shutdown
Power OFF
Alert
LED display turns off Two short beeps
POWER
button is pressed and
released (while power is on)
Followed by a system shutdown
Power ON
Alert
LED display lights up Single long beep
POWER
button is pressed and
released (while power is off)
USER MANUAL..
15
6.2 Troubleshooting
If you encounter results and/or errors in the operation of NOMAD that are not explained in the previous
sections, check the following table on user troubleshooting to determine the need for authorized
service.
Device Symptom
Potential Problem
Corrective Action
6.2.1 Image from x-ray
exposure does not have
sufficient contrast
Underexposure (too light).
Increase the exposure time setting;
or see Incomplete Exposure below.
Overexposure (too dark).
Decrease the exposure time
setting, also check film expiration
date (old film can produce dark
grainy/foggy images).
Chemical developer (for film-
based imaging).
Ensure chemical freshness and
proper temperature.
6.2.2 Image from x-ray
exposure is blurred
Combined movements of
operator and subject during
exposure produced too much
distortion.
Check the exposure time setting
and re-enable when operator and
subject are again properly situated.
6.2.3 Green
ENABLED
indicator stops flashing (and
corresponding, short double
beeps end) before an
exposure is started
NOMAD is no longer enabled. If
an x-ray exposure is not initiated
within 30 seconds of enabling,
the System Ready condition will
terminate.
Double-check the exposure time
setting and re-enable when
operator and subject are again
properly situated.
6.2.4 Green
START
and
yellow
X-RAYS ON
indicators
flash (with corresponding
series of long beeps)
Incomplete exposure – the
depressed trigger was released
before the timed exposure was
able to complete.
This condition is cleared
automatically within 15 seconds or
by manually turning NOMAD off
and back on. The exposure will
likely need to be repeated.
6.2.5 Yellow
X-RAYS ON
indicator does not illuminate
No exposure – a subsequent Low
Battery alert will signal whether a
low battery is the source of the
problem.
Follow proper procedures for
replacing the battery; see section
5.0, Battery Replacement.
If within a few seconds, two short
beeps are emitted and the
system automatically shuts down,
a different problem exists (see
section 6.1, Alarms and Alerts).
NOMAD will require authorized
service; see section 6.3, Repair
and Maintenance.
6.2.6 NOMAD
automatically shuts down
After about 2.5 minutes of
inactivity, NOMAD emits two
short beeps and shuts off
automatically – the system has
timed out.
Manually turn on NOMAD when
you are ready to use the device.
NOMAD
16
Device Symptom
Potential Problem
Corrective Action
However, if while attempting an
x-ray exposure two short beeps
were emitted and shutdown
occurred, a different problem
exists (see section 6.1, Alarms
and Alerts).
If this condition persists, NOMAD
will require authorized service; see
section 6.3, Repair and
Maintenance.
6.2.7 There is no power to
the NOMAD control panel
If pressing
POWER
several times
does not cause the numeric
(LED) display to illuminate, the
attached battery is the likely
problem.
Ensure battery is securely
attached.
Replace with a newly charged
battery before continuing. Use the
battery charger to determine if the
first battery is spent and must be
taken out of service, or if it can be
recharged.
However, if while attempting an
x-ray exposure two short beeps
were emitted and shutdown
occurred, a different problem
exists (see section 6.1, Alarms
and Alerts).
NOMAD will require authorized
service; see section 6.3, Repair
and Maintenance.
If you have additional questions or require help contact: support@aribex.com
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