Braemar ER910 User manual

Braemar, Inc.
ER910,
ER910,ER910,
ER910, 920
920920
920
And
AndAnd
And
ER910,
ER910,ER910,
ER910, 920
920920
920 AF
AFAF
AF
Arrhythmia Event Monitor
Caution: U.S. Federal law restricts this device to
sale by or on the order of a physician.

Braemar Limited Warranty
Braemar products are warranted to be free from manufacturing and
material defects for a period of one (1) year from the date of shipment
from Braemar to the original purchaser.
Excluded from this warranty are expendable supply items including, but
not limited to, electrodes, lead wires, patient cables and batteries. This
warranty does not apply to any product which Braemar determines has
been modified or damaged by the customer.
Except for the express warranties stated above, Braemar disclaims
all warranties including implied warranties of merchantability and
fitness. The stated express warranties are in lieu of all obligations
of liabilities on the part of Braemar for damages, including but not
limited to, special indirect or consequential, arising out of or in
connection with the use or performance of Braemar products.
Any action for breach of warranty shall be commenced within one (1)
year of said breach or be forever barred. Any repairs made to the
product which are not covered by the warranty shall be billed to the
customer.
Document Number: 600-0606-00
Revision: K
Date: December 2008

ER910/920 and ER910/920 AF Event Monitor
1
Table of Contents
Overview...................................................................................................2
Indications for Use....................................................................................2
Precautions...............................................................................................2
Monitor Components ................................................................................3
Setup Steps ..............................................................................................4
Electrode Application and Placement .......................................................4
1 and 2 Channel (4 Lead) Electrode Placement .......................................5
Monitor Preparation ..................................................................................6
Patient Operating Instructions ................................................................13
Troubleshooting......................................................................................16
Event Markings.......................................................................................18
Service and Maintenance .......................................................................19
Service Items and Accessories...............................................................19
Equipment Symbols................................................................................20
Specifications .........................................................................................21
Electromagnetic Emissions.....................................................................23
Electromagnetic Immunity ......................................................................23
Recommended Separation Distances ....................................................26
ER910/920 and ER910/920 AF Event Monitor
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Overview
The ER910/920 and ER910/920 AF Event Monitors are battery operated,
solid state, looping event recorders designed to record symptomatic heart
arrhythmias. Event recording is activated by the patient or by automatic
event detection.
The ER910 (1 channel) and ER920 (2 channel) event monitors provide
up to 30 minutes of total recording time and will operate as a simple
looping event recorder for a minimum of 30 days with two AAA
Alkaline batteries. They offer multiple programmed recording options
allowing the physician to determine their own parameters. Selectable
parameters include number of events, pre-event time, post-event time,
audible operation, pacemaker detection, and arrhythmia detection.
The ER910/920 Event Monitors are enhanced with Arrhythmia Detection
firmware which will capture and automatically record asymptomatic,
infrequent, or elusive heart arrhythmia events such as Bradycardia,
Tachycardia, and Pause. The ER910/920 AF includes all of these
features and in addition, Atrial Fibrillation.
Once an event is recorded, patients may transmit their ECG
transtelephonically.
Indications for Use
The device is indicated for diagnostic evaluation of patients who
experience transient symptoms such as; dizziness, palpitations, syncope,
or chest pain. The device is intended to record cardiac activity associated
with these infrequent and transient symptoms. Once data is recorded,
patients transmit the recorded ECG data over the telephone or directly to
a host PC for review by a licensed physician.
Precautions
A. Patient leads must be removed from electrodes before defibrillation.
B. Observe local laws for disposal of alkaline batteries.
C. Do not leave the batteries in the Monitor when it is not in use.
Damage from corrosion could result.
D. Patient should be instructed to avoid close proximity to heavy
electrical equipment or other sources of electromagnetic
interference.
E. Use of rechargeable batteries is not recommended.
F. Do not use cellular phone to transmit patient data.
G. Monitor is not for infant use.
H. No automatic analysis algorithm can replace data review by a
qualified physician. Review and confirmation of analysis results is
required.

ER910/920 and ER910/920 AF Event Monitor
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Monitor Components
Batteries Two 1.5V AAA Alkaline. Insert into battery
compartment observing polarity symbols.
Belt clip To attach, snap the Monitor into the belt clip with
Patient Cable oriented up and the display facing out.
Necklace To attach, remove battery cover, insert necklace T’s
into slots in case. Replace battery cover.
Patient Cable To adjust, move plastic slip rings up or down to keep
leads together. To lengthen, pull leads apart.
ER910/920 and ER910/920 AF Event Monitor
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Setup Steps
This manual is designed to allow a technician to follow the instructions
page by page to setup the ER910/920 and ER910/920 AF Monitor. Here
is the general layout:
1. Connect leads and electrodes to patient.
2. Prepare Monitor for recording.
A. Choose/Setup program you want to use.
B. Erase all previous events.
3. Connect Patient Cable to Monitor.
Electrode Application and Placement
For each electrode lead wire:
1. Snap the electrode onto the lead wire.
2. Remove the protective backing from the adhesive side of the
electrode.
3. Apply the electrode to the patient’s skin per Electrode Placement
diagram in this manual or as instructed by the physician.
Notes:
A. You must use a Patient Cable that the Monitor is able to
recognize. As an example, you cannot use a 2 channel cable
with a 1 channel Monitor.
B. It is recommended that trained medical personnel instruct the
patient in the proper application of electrodes.
C. Use good quality long term electrodes. Braemar recommends
the use of low impedance Holter electrodes. Instruct patient to
apply fresh electrodes regularly. (Usually on a daily basis.)
D. Proper preparation of the patient's skin is absolutely essential
for obtaining a quality ECG recording. The skin surface where
the electrodes will be placed should be cleaned with alcohol,
allowed to dry, and abraded.
E. Any loose electrode needs to be replaced.

ER910/920 and ER910/920 AF Event Monitor
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1 and 2 Channel (4 Lead) Electrode Placement
This is a typical electrode placement. Refer to Analysis System software
and the physician for recommended positioning.
1 and 2 Channel Electrode Placement
Use only Channel 1 if you have a single channel cable.
Channel 1 = White and Red (V5 vector)
Channel 2 = Black and Brown (V1 vector)
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Monitor Preparation
1. General setup: Remove the Patient Cable if it is connected to
the Monitor. Open the battery compartment by sliding battery door
downward. Install two fresh AAA Alkaline batteries. Observe
proper battery polarity. The Monitor will sound rising tones after
completion of power up. After a few seconds, the display will show
the battery level and number of events stored.
The battery level should be near 100%. The number of events stored
does not matter at this point.
2. Enter programming mode:
A. Push and hold both program buttons on the front of the Monitor
for two seconds until an audible tone is heard.
B. The Monitor will then display an information screen. Press the
RECORD/SEND button to get to the programming mode
screen.

ER910/920 and ER910/920 AF Event Monitor
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General notes:
A. To leave the programming mode without saving your
changes, remove the batteries.
B. If you enter the programming mode, events stored in
the Monitor are always erased when the Monitor
restarts and a Patient Cable is connected.
C. All previously stored events and settings are erased
when you select EXIT on the last programming screen.
D. The Monitor always highlights the DEFAULT option when
entering programming mode even if the CUSTOM option
was last used. This is only visual. Whatever option was
used for a previous recording will continue to be used.
E. Previously saved settings are displayed when in the
CUSTOM option.
F. Factory default settings are indicated by a “ )( ” in front of
the setting.
G. Use the program buttons to change the program settings
and press the RECORD/SEND button to confirm the
setting you have chosen. Pressing RECORD/SEND also
advances the screen to the next program setting.
H. Lead loss detection is on all the time.
I. The number of channels a Patient Cable contains will
determine the number of channels the Monitor will record.
Note about Arrhythmia and AFIB detection:
A. To change Arrhythmia and AFIB settings you must access
the CUSTOM program option.
B. The Arrhythmia and AFIB algorithms can be used
independently of each other.
C. Although the device detection algorithms are very
sophisticated, there is no guarantee that the device will
catch all episodes of arrhythmia. For maximum efficacy,
use the most sensitive settings.
ER910/920 and ER910/920 AF Event Monitor
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Notes about sound:
A. Lead loss sound overrides the POST-EVENT SOUND
setting.
B. If the Monitor has lead loss during a recording, the Monitor
will produce an audible sound of the event until the
recording is complete. You can mute this sound by using
the AUDIO setting after the recording is complete.
C. The AUDIO setting can only be accessed before or after
an event is recorded. Trying to access the AUDIO setting
during a recording will cause the recording to stop.
D. The AUDIO setting controls many of the sounds the patient
will hear while wearing the Monitor and may be turned ON
or OFF. The AUDIO screen can be accessed during normal
monitoring conditions (Patient Cable inserted) by pressing
only one of the programming buttons for two seconds. The
AUDIO screen will exit after 10 seconds of inactivity.
E. The AUDIO setting defaults to ON every time the Monitor
is powered up.
F. The AUDIO setting defaults to ON every time the Patient
Cable is removed. This is to enable the Monitor to send
events to the receiving center.
G. Table of sound settings:
(number indicates importance, 1
st
, 2
nd
, 3
rd)
Screen Setting ↓
Monitor Sound ↓POST-
EVENT AUDIO
Power on tones NA NA
Cable detect NA NA
Auto event record 2
nd
1
st
Manual event record 2
nd
1
st
Prog button press NA 1
st
Phone ring at end of a recording NA 1
st
Phone ring for memory full NA 1
st
Lead loss during recording LL overrides 1
st

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3. Choose program:
Choose either the DEFAULT or CUSTOM option. The DEFAULT
option only allows you to change the Contrast of the display. The
CUSTOM option allows changes to all of the following settings.
Note:
A. Factory default settings in the Monitor are indicated by a “ )( ”
in front of the setting.
B. To see the default values for the Monitor, enter the
programming mode and choose DEFAULT. The Monitor
will restart. Enter the programming mode again and
choose CUSTOM. All the values displayed will be the
defaults. There is space available on the next pages to
write the default of the Monitor.
C. Choosing the DEFAULT option will program the monitor with
the factory default values, erase previous patient data, and
restart the monitor.
Programming settings:
Display Option Description
DISPLAY
CONTRAST
Default = NA
Set the contrast of the display. A
higher number will cause darker
text on the screen.
PRE-EVENT
TIME
Default = 60 sec
Seconds of ECG data stored
before event activation time. 300
seconds total can be split between
Pre and Post events. (minimum of
5 sec)
POST-EVENT
TIME
Default = 30 sec
Seconds of ECG data stored after
event activation time. (minimum
of 5 sec)
# OF EVENTS
Default = 5
Total number of events the
Monitor will store. The maximum
number allowed is dependent on
Pre and Post Event times.
Continue on next page
ER910/920 and ER910/920 AF Event Monitor
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User Defined options continued
Display Option Description
POST-EVENT
SOUND
Default = ON
ON = Sound on while recording
during the Post-Event time.
OFF = Sound off while recording
an event. See Notes about sound
for additional information.
HOURLY
REMINDER
Default = ON
ON = Ring every hour when an
event is stored in memory.
OFF = Do not remind patient an
event is stored in memory.
PREVIEW TIME
Default = 10 sec
The number of seconds the ECG
signal is displayed for each channel
when a Patient Cable is inserted.
TRANSMIT
SPEED
Default = 3X
The speed used for transmission of
data to the receiving center.
PACEMAKER
DETECTION
Default = OFF
Turn Pacemaker stimulus
detection ON/OFF
ARRHYTHMIA
DETECTION
Default = ON
Turn Arrhythmia Detection
ON/OFF. When ON, The Brady
Rate, Tachy Rate, and Pause
Duration Threshold can be set.
BRADY RATE
Default = 45 bpm
(Arrhythmia Detection must be on
to access this function)
TACHY RATE
Default = 140 bpm
(Arrhythmia Detection must be on
to access this function)
Continue on next page

ER910/920 and ER910/920 AF Event Monitor
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User Defined options continued
Display Option Description
PAUSE
DURATION
THRESHOLD
Default = 3.0 sec
(Arrhythmia Detection must be on
to access this function)
AFIB
DETECTION
Default = ON
-ER910/920 AF devices only-
EXIT OR
REVIEW
PROGRAM
See step about leaving
programming mode for
information.
4. Leave programming mode and erase events:
Choose EXIT from the last programming mode screen and press the
RECORD/SEND button. The Monitor will restart
Note:
A. Choosing EXIT will erase all stored events and save your
settings over the top of previous program settings. Choosing
REVIEW will allow you to changes program settings.
Alternate way to erase events:
If you don’t want to enter the programming mode, you can also
erase events by the following sequence.
A. Remove the Patient Cable.
B. Hold the RECORD/SEND button for two seconds until audible
tone is heard. You will hear the transmission of any events
stored in the Monitor. At the end of the transmission you will
hear a falling tone and the Monitor will display STOPPED in
the upper left.
C. Inserting the Patient Cable at this time will erase all events and
restart the Monitor.
ER910/920 and ER910/920 AF Event Monitor
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5. Connect the patient:
A. At this time, the patient leads should be connected to the
electrodes and the electrodes should be connected to the patient.
B. Insert the Patient Cable into the Monitor.
Notes:
•If the patient is connected correctly, the Monitor will sound
one beep for a single channel cable or two beeps for a two
channel cable
C. View the display just after the Patient Cable is connected. It
will show the signal from each channel of the cable.
Notes:
•There will be an accompanying beep for the channel
number displayed.
•The Monitor will not respond to any button presses during
the preview time.
•A square wave will continue to be
displayed if there is not a good
connection to the patient. A good
ECG signal must be found before the
Monitor will start to look for events.
6. The Monitor is ready to record events.
A. The general settings of the Monitor are displayed during
operation by the number of dots after the word
“MONITORING”.
Display Setting
MONITORING No Arrhythmia or AFIB
MONITORING.Arrhythmia only
MONITORING.. Arrhythmia and AFIB
MONITORING…AFIB only

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Patient Operating Instructions
The Monitor should be ready when you receive it from the technician. If
there are any problems, refer to the Troubleshooting section.
Display overview:
To Hookup:
1. Snap lead wires onto electrodes first, then apply electrodes according
to physician instructions.
2. Reapply fresh electrodes daily.
3. Insert the Patient Cable into the Monitor.
Notes:
A. Depending on the cable, there should be a single or double beep
that indicates a good patient connection. If no beep is heard,
double check cable connections.
B. Viewing the display just after the Patient Cable is connected
will show the signals from each of the channels. There will also
be an accompanying beep for the channel number displayed.
C. The Monitor will not respond to any button presses during the
preview time.
D. A square wave will continue to be
displayed if there is not a good
connection to the patient. A good ECG
signal must be found before the Monitor
will start to look for events.
4. The Monitor is now looping and ready to record.
ER910/920 and ER910/920 AF Event Monitor
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To Record: Events to be recorded will be described by the physician.
1. Press the RECORD/SEND button for two seconds until an audible
tone is heard, then release.
Notes:
A. There are two RECORD/SEND buttons; you only need to push
one of them for two seconds to activate the Monitor.
B. To stop a recording, press the RECORD/SEND button again for
two seconds.
C. “RECORDING” will flash in the upper left hand corner of the
display.
2. Hold as still as possible during recording but continue breathing.
3. The recording is complete and ready to send when a phone ring is
heard from the Monitor.
Notes:
A. The display will also show that an event is stored in the
Monitor. If the memory is full, follow instructions To Send and
Erase Events
B. You can mute many of the sounds from the Monitor by pressing
only one of the programming buttons for two seconds. This will
show a screen that allows you to select whether AUDIO for the
Monitor is turned ON or OFF.
C. The AUDIO setting defaults to ON every time the Monitor is
powered up.
D. The AUDIO setting defaults to ON every time the Patient Cable
is removed. This is to enable the Monitor to send events to the
receiving center.
Automatic Record:
If Arrhythmia Detection is ON and an event is detected, the Monitor will
beep at the start of the recording. The recording is complete and ready to
send when a phone ring is heard from the Monitor. An event will also
show on the display.
A. The last event location is always reserved for a manual
recording.

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To Send:
1. Remove the Patient Cable from the Monitor.
2. Set the Monitor on a flat surface with the speaker hole up.
3. Call the receiving center.
A. Cell phones and VOIP phones do not work for the transmission.
4. Follow receiving center instructions.
A. When instructed, place the telephone mouthpiece over the
Monitor speaker hole.
B. Push the RECORD/SEND button for two seconds. The
Monitor will make audible tones and “SENDING” will be
shown in the upper left hand corner of the display while the
recording is being sent.
•A falling tone will sound when the transmission is complete
and “STOPPED” or “MEMORY FULL” will be shown in
the upper left hand corner of the display.
•Pressing RECORD/SEND for two seconds during
transmission will abort the transmission. Pressing
RECORD/SEND again will re-send the recording.
5. When instructed that the events have been sent successfully, it is OK
to erase events by reinserting Patient Cable. (The Monitor will
restart and you will then hear a rising tone.)
Erase Events:
1. Complete the “To Send” section above first.
2. Insert the Patient Cable. The Monitor will restart and emit a rising
tone.
A. The Monitor will display each ECG signal for 5-30 seconds and
then return to the main monitoring screen.
B. The number of events on the right hand side should display 0.
3. The Monitor is now looping and ready to record new events.
ER910/920 and ER910/920 AF Event Monitor
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Troubleshooting (page 1 of 2)
Symptom Recommended Solution
No display Ensure batteries are inserted with correct polarity.
Cannot enter programming
mode
The Patient Cable must be removed and the batteries
installed. Then follow instruction in manual.
A good connection must be made from the Monitor to the
patient to be able to access the AUDIO setting.
While monitoring, press and hold only one of the
programming buttons for two seconds to access the AUDIO
setting.
Cannot access AUDIO
setting,
Patient wants to mute
Monitor.
AUDIO setting cannot be accessed during a recording.
Wait until end of recording, then access AUDIO screen.
No phone ring at end of
recording
The AUDIO setting is turned on which mutes most sounds.
Ensure patient electrodes/leads are connected to patient
properly. Is the Patient Cable damaged in some way?
Ensure Patient Cable is inserted completely.
No beep when inserting
Patient Cable
Patient Cable has more channels than Monitor can use.
Match the number channels for the cable and Monitor.
Memory full-Phone Ring. Follow instructions To Send and
Erase Events.
Ensure Patient Cable is inserted completely.
Will not record
Ensure RECORD/SEND button is held for two seconds.
Monitor stops recording. Holding any button for two seconds while recording will
cause the Monitor to stop recording. This includes trying to
access the AUDIO setting
Siren (alternating) tone
while recording
There is not a good connection. Check that electrodes/leads
have a good connection to patient and cable is plugged into
Monitor
Monitor restarts and
erases stored events
Changing the Patient Cable to a different number of
channels tells the Monitor to restart and erase all events.
Phone ring sound every
hour
Memory has event(s) to be transmitted to the receiving
center.
Phone ring sound every
minute for 10 minutes
Memory is full; follow instructions To Send and Erase
Events.
Phone ring sound when
RECORD/SEND button is
pushed
Memory is full; follow instructions To Send and Erase
Events.
Phone ring sound once An event is already stored in memory at start up, also heard
at the end of a recorded event. Follow instructions To Send
and Erase Events.
Three beeps every five
minutes with cable inserted
Batteries are low. Replace batteries and/or clean battery
contacts

ER910/920 and ER910/920 AF Event Monitor
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Troubleshooting (page 2 of 2)
Make sure mouthpiece of phone is directly over Monitor
speaker
No information received by
receiving center
Ensure RECORD/SEND button is held for two seconds.
Mouthpiece of phone must be close to the Monitor speaker
hole.
Check telephone connection. Listen to phone line before
sending event(s) to ensure there is no noise.
Have patient call back and send ECG again.
Noise artifact on recorded
ECG at receiving center
Have patient try another phone.
Electrodes must be securely attached to patient.
Patient should remain still while recording.
Replace Patient Cable. Pulling on lead wires may damage
cable.
Verify the recording did not take place near a source of
electromagnetic interference (fluorescent lights, computer
monitors, or household appliances).
Noise artifact on recorded
ECG at patient location
Move electrodes slightly to the right or left of the original
location.
All or groups of timestamps
for recordings are the
same.
If the inadvertent loss of power occurs, all the timestamps
in the FSK will reset to the time the unit powered back up.
Subsequent recordings will have time stamps relative to the
power up time.
Falling tone Transmission complete
Rising tone Ready to record
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Event Markings
The following shows typical event markings that are generated by the
Monitor and appear on the receiving station strip chart.

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Service and Maintenance
Cleaning
Remove the batteries before cleaning the recorder. Clean the battery
terminals with a soft dry cloth. Dampen a soft cloth with mild detergent
and water to clean the recorder, lead wires, and belt clip.
Remove any adhesives from the patient lead wires with an adhesive tape
remover solution or swab. Use a mild disinfectant. Do not use alcohol
or acetone on the lead wires since they could stiffen and the insulating
plastic could crack.
Service
If there is a problem with the Monitor, review the problem descriptions
and solutions listed on the next page. If additional assistance is required
contact customer support via phone, Fax or E-mail listed below. Call
customer support before returning a Monitor to make shipping
arrangements.
A. Note there isn’t any preventative inspection or maintenance that
can be performed by the end user.
Service Items and Accessories
Description Part Number
Patient lead, 1 channel, shielded 350-0173-09
Patient lead, 2 channel, shielded 350-0173-10
Monitor belt clip / Holster 100-1764-002
Necklace 350-0180-00
Operator manual 600-0606-00
AAA I.E.C. LR03 Alkaline Battery 200-2492-001
ER910/920 and ER910/920 AF Event Monitor
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Equipment Symbols
Symbol Description
Type B Applied Part
Consult manual.
SN Serial Number
0086
Complies with the Medical Device Directive of the
European Union.
Waste Electrical and Electronic Equipment (WEEE)
It is the responsibility of the end user to dispose of
this equipment at a designated collection point for
recycling.
Date of Manufacture
Manufacturer:
Braemar, Inc.
1285 Corporate Center Drive, Suite 150
Eagan, MN 55121 USA
Phone: [phone]
651.286.8620
Fax: [phone]
E-mail: [email protected]m
Web: http://www.braemarinc.com
Contact Braemar for further technical information.
Authorized European Rep:
QNET BV
Hommerterweg 286
6436 AM Amstenrade
The Netherlands

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Additional equipment classification information as required in EN 60601-1
A. EQUIPMENT not suitable for use in the presence of a
FLAMMABLE ANAESTHETIC MIXTURE WITH AIR of WITH
OXYGEN OR NITROUS OXIDE
B. IPX0 Ordinary Equipment (enclosed equipment without protection
against ingress of water)
C. Internally Powered Equipment
D. Mode of Operation - Continuous Operation
ER910/920 and ER910/920 AF Event Monitor
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Specifications
Functional
ER910 1 channel only
ER920 1 or 2 channel
Max Number of events 30
Sample rate 256 samples per second
User interface LCD display and sound
Memory
Max event time
One channel 30 minutes
Two channel 30 minutes
Max total record time
One channel 30 minutes
Two channel 30 minutes
Type Flash
Data retention Non-volatile
Physical
Dimensions 3.5"x 2.125"x .65"
(89.9mm x 54.0mm x 15.7mm)
Weight with batteries 3.5 oz.
Enclosure Molded plastic
Operating position Any orientation
Electrical
Input impedance 2M min.
CMR ratio 60dB
AC signal range +/- 3mV
DC signal range +/- 300mV
Resolution 23uV (8bits)
Frequency response .05Hz to 40Hz
Environmental
Operating temperature 0°C to +45°C
Non-operating temperature -20°C to +65°C
Operating humidity 10% to 95% (non-condensing)
Non-Operating humidity 5% to 95%
Transtelephonic Transmission
Transmit carrier 1900Hz
Carrier deviation 100Hz/mV
Battery
Type (2) AAA Alkaline IEC-LR3
Life 30 days min. during looping recording
Remove batteries during storage
Warranty 12 months from shipment

ER910/920 and ER910/920 AF Event Monitor
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Electromagnetic Emissions
Emissions test Compliance Electromagnetic
environment - guidance
RF emissions
CISPR 11
Group 1 The ER9xx uses RF energy only
for its internal function. Therefore,
its RF emissions are very low and
are not likely to cause any
interference in nearby electronic
equipment.
RF emissions
CISPR 11
Class B The ER9xx
is suitable for use in all
establishments, including domestic
establishments and those directly
connected to the public low-
voltage power supply network that
supplies buildings used for
domestic purposes.
Electromagnetic Immunity
Immunity test IEC 60601
test level
Compliance
level
Electromagnetic
environment - guidance
Electrostatic
discharge (ESD)
IEC 61000-4-2
±6 kV contact
±8 kV air
±6 kV contact
±8 kV air
Floors should be wood,
concrete or ceramic tile. If
floors are covered with
synthetic material, the relative
humidity should be at least
30%.
Power frequency
(50/60 Hz)
magnetic field
IEC 61000-4-8
3 A/m 3 A/m Power frequency magnetic
fields should be at levels
characteristic of a typical
location in a typical
commercial or hospital
environment.
ER910/920 and ER910/920 AF Event Monitor
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ER910/920 and ER910/920 AF Event Monitor
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ER910/920 and ER910/920 AF Event Monitor
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Recommended Separation Distances
Refer to the following table for recommended separation distances
between the ER9xx and portable and mobile RF communications
equipment.
The ER9xx is intended for use in an electromagnetic environment in
which radiated RF disturbances are controlled. The user of the ER9xx
can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment
(transmitters) and the ER9xx as recommended below, according to the
maximum output power of the communications equipment.
Separation distance according to
frequency of transmitter
Rated maximum
output power of
transmitter
W
150 kHz
to 80 MHz
d= 1.2 √P
80 MHz
to 800 MHz
d= 1.2 √P
800 MHz
to 2,5 GHz
d= 2.3 √P
0,01 0,12 0,12 0,23
0,1 0,38 0,38 0,73
1 1,2 1,2 2,3
10 3,8 3,8 7,3
100 12 12 23
For transmitters rated at a maximum output power not listed above,
the recommended separation distance din metres (m) can be
estimated using the equation applicable to the frequency of the
transmitter, where Pis the maximum output power rating of the
transmitter in watts (W) according to the transmitter manufacturer.
NOTE1: At 80 MHz and 800 MHz, the separation distance for the
higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations.
Electromagnetic propagation is affected by absorption and reflection
from structures, objects and people.

Braemar Inc.
Phone: [phone]
1285 Corporate Center Drive, Suite 150 Fax: [phone]
Eagan, MN 55121 USA E-Mail: [e-mail]
Copyright 2006, Braemar Inc. All rights reserved