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OPERATIONAL & SAFETY NOTICES
RF Exposure
Antenna Gain vs. Recommended Safety Distance
Minimum RF
Safety Distance
FCC Part 15 Notice (Pending Approval)
The transceiver is approved under Part 15 of the FCC Rules. Operation is subject to the following two con-
ditions: (1) this device may not cause harmful interference, and (2) this device must accept any interfer-
ence received, including interference that may cause undesired operation. Any unauthorized modification
or changes to this device without the express approval of Microwave Data Systems may void the user's
authority to operate this device. Furthermore, this device is intended to be used only when installed in
accordance with the instructions outlined in this manual. Failure to comply with these instructions may
void the user's authority to operate this device.
CSA/us Notice (Pending Approval)
This product is pending approval for use in Class 1, Division 2, Groups A, B, C & D Hazardous Locations.
Such locations are defined in Article 500 of the National Fire Protection Association (NFPA) publication
NFPA 70, otherwise known as the National Electrical Code. The transceiver has been recognized for use
in these hazardous locations by the Canadian Standards Association (CSA) which also issues the US mark
of approval (CSA/US). The CSA Certification is in accordance with CSA STD C22.2 No. 213-M1987.
CSA Conditions of Approval: The transceiver is not acceptable as a stand-alone unit for use in the
hazardous locations described above. It must either be mounted within another piece of equipment which
is certified for hazardous locations, or installed within guidelines, or conditions of approval, as set forth
by the approving agencies. These conditions of approval are as follows:
The transceiver must be mounted within a separate enclosure which is suitable for the intended application.
The antenna feedline, DC power cable and interface cable must be routed through conduit in accordance
with the National Electrical Code.
Installation, operation and maintenance of the transceiver should be in accordance with the transceiver's
installation manual, and the National Electrical Code. Tampering or replacement with non-factory com-
ponents may adversely affect the safe use of the transceiver in hazardous locations, and may void the
approval. A power connector with screw-type retaining screws as supplied by GE MDS must be used.
EXPLOSION
HAZARD!
Concentrated energy from a directional antenna may pose a health hazard to
humans. Do not allow people to come closer to the antenna than the distances
listed in the table below when the transmitter is operating. More information on
RF exposure can be found online at the following website:
www.fcc.gov/oet/info/documents/bulletins.
(MDS SD4 Radio)
0–5 dBi
0.79 meter
Do not disconnect equipment unless power has been switched off or
the area is known to be non-hazardous.
Refer to Articles 500 through 502 of the National Electrical Code
(NFPA 70) for further information on hazardous locations and
approved Division 2 wiring methods.
Antenna Gain
5–10 dBi
10–16.5 dBi
1.41 meters
3.05 meters
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