Philips Medical Systems North America M3813A2 Low Power Transmitter User Manual Manual

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Document ID	183325
Application ID	NjFjzKkr7tXtdeVKshXi4A==
Document Description	Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	10.29kB (128645 bits)
Date Submitted	2001-12-13 00:00:00
Date Available	2001-12-13 00:00:00
Creation Date	2001-12-13 08:46:19
Producing Software	Acrobat Distiller 4.0 for Windows
Document Lastmod	2001-12-13 08:48:54
Document Title	Manual

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Specifications
Model
M3813A
Type
• Internally powered equipment
•
Type B applied part
• IPXO Ordinary Equipment
• Continuous operation
Audio
Voice readout of weight, prompts, and 3 volume
settings, plus silence.
Display
• Digital, 0.7” (18 mm) character height
• Weight displayed and announced simultaneously
Measurement range
66 to 330 lbs. (30 to 150 kg)
Accuracy
±1% ±1.1 lbs. (.5 kg)
Display units
Pounds or kilograms, user-selectable
Maximum allowable
weight
330 lbs. (150 kg)
Grab bar and column
Removable attachment
Power source
Four type AA (1.5 volt) alkaline batteries connected
in series (6.0 volts), included
Battery life
Approximately 6 months with daily measurement
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Scale User Guide
Specifications
Operating environment
• 50º to 104º F (10º to 40º C)
• 85% relative humidity
• Atmospheric pressure 572 - 1013 hPa
(0 - 15,000 feet or 0 - 4,600 meters of altitude)
• WARNING: This equipment is not suitable for use
in the presence of flammable anaesthetic mixture
with air or with oxygen or nitrous oxide.
Transport and
Storage environment
• 15º to 130º F (-9º to 54º C)
• 85% relative humidity
• Atmospheric pressure 572 - 1013 hPa
(0 - 15,000 feet or 0 - 4,600 meters of altitude)
Dimension (approx.)
• Height including column attachment: 40-7/8"
(104 cm)
• Length: 19-3/8” (49 cm)
• Width including grab bars: 20" (51 cm)
Weight (approx.)
With column and batteries - 15 lbs. (6.8 kg)
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Electromagnetic Compatibility
The electromagnetic compatibility (EMC) validation of the
M3813A Scale included testing performed according to the international standard for EMC with medical devices. See the
Manufacturer’s Declaration for details.
Electromagnetic Compatibility Testing
During the test program, the Scale was subjected to many EMC
tests, including both international standard and Agilent proprietary
tests. During most of the testing no anomalies were observed. For
one of the tests, EN 61000-4-3 Radiated Immunity, reduced performance was observed.
EN 61000-4-3 specifies that the product be subjected to a field of
3 Volts/meter over a frequency range of 26 to 1000 MHz with no
degradation of performance or loss of function below the performance level specified when equipment is operated as intended. At
many of the test frequencies over the specified range, no anomalies were observed. However, at a number of test frequencies,
radio communications from the Scale to the M3812A Home Hub
was disrupted. These reduced levels are as low as 0.04 V/m in the
range from 800.732 MHz to 977.035 MHz. In addition, change in
measured weight was excessive at some frequencies. These
reduced levels are as low as 0.42 V/m at 32.998 MHz in the range
from 26 MHz to 1000 MHz.
The phenomena discussed above are not unique to this Scale, but
are characteristic of medical and radio instrumentation in use
today. The Home Hub is a radio receiver and its reception can be
degraded by electromagnetic interference. Sensitive high gain circuits used in measurements can be affected by electromagnetic
interference.
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Scale User Guide
Electromagnetic Compatibility
Avoiding Electromagnetic Interference Problems
Eliminating the source of interference or moving it away can prevent electromagnetic interference. Possible sources of interfering
radio frequency radiation are cellular telephones, cordless telephones, or other products that contain radio transmitters. The Scale
has a Radio Test Button that sends a reduced strength test radio signal to the Home Hub, which sounds an audio tone if the test signal
is successfully received. This test can be used to determine whether
sources of interference are present. These sources can be turned off
or moved away to reduce their strength and reduce interference. In
addition, the Scale and the Home Hub can be placed closer to each
other so that the radio transmission from the Scale to the Home Hub
has less distance to travel and interfering radio signals have less
effect. The radio transmission from the Scale is repeated periodically
so that an intermittent source of interference should only delay
reception.
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FCC Regulations
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy. If it is not installed and used in accordance with the instructions, it might cause harmful interference to radio communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the
following measures:
• Re-orient or relocate the Home Hub.
• Increase separation between the measurement devices or the
Home Hub and the device being interfered with; e.g., the television.
• Consult your Health Care Provider.
Note: Any changes or modifications to the equipment that are not
expressly approved by Agilent could void the user’s authority to
operate this equipment.
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