O3-12D1D
1665, Issue 6, April 2013
10
For Type 5 (EIPP) applications, the O3-12D1D is to be installed in an electronic equipment cabinet (EEC)
and have its DS1 ports connected with cabling that does not exceed 1 meter (3.3 feet) in length to Bourns
303M-09H3GH 5-pin or equivalent protectors inserted in an approved 5-pin protector block. Bourns 303M-
09H3GH or equivalent protectors are also to be used in Type 3 applications in accordance with local
procedures. The Bourns protectors, protector block, and cabling are not supplied with the O3-12D1D. When
installed in an EEC in this fashion, the following GR-1089-CORE Warning applies:
EIPP WARNING
The equipment (O3-12D1D, 303M-09H3GH 5-pin or equivalent primary protectors, 5-pin
protector block, and interconnecting cable) may be located in an EEC as long as the
installation does not employ separate (additional) primary protectors for the same OSP
cable used to provide connections to the O3-12D1D DS1s. EIPP installations such as
these, which include integrated primary protection, are not suitable for central office and
network locations that contain other primary protection for the same OSP cable [such as
controlled environment vaults (CEVs) or huts]. For the purposes of determining placement
and location of fuse links or fuse cable, the equipment shall be treated as a fuse-less
protector, regardless of capability to provide fusing. Note that the Warning above applies
to EIPP applications; in other applications, the O3-12D1D may be installed in COs, huts,
CEVs, customer-premises equipment (CPE), and similar locations as Type 2, 3, or 4
equipment.
WARNINGS
1. This unit includes components that are susceptible to damage from static electricity.
DO NOT handle units without protection from electrostatic discharge.
2. When not in use, optical connectors must be covered by dust caps to keep airborne
particles off connecting surfaces and to preserve optimum performance.
3. Always clean fiber plugs with an approved fiber-cleaning product, following
appropriate procedures, before plugging the fiber into the O3-12D1D.
4. O3-12D1D units can be equipped with long-range transceivers which produce a higher
optical output than the receiver can tolerate. This capability is intended for applications
where long lengths of fiber will attenuate the signal. If a long-range transceiver is used
in an application with short fibers, a 15 dB attenuator should be installed on the
transmit port to prevent bit errors and possible damage to the receiver.
5. When connecting the O3-12D1D optical output to test equipment, verify that the
maximum input level specification of the test equipment is not exceeded by the O3-
12D1D output. Even intermediate-range optics can produce levels too high for some
test equipment, so attenuators might be required. In general, when connecting the
O3-12D1D to test equipment, Pulsecom recommends a 5 dB attenuator when
intermediate-range optics are installed in the O3-12D1D and a 15 dB attenuator when
long-range optics are installed in the O3-12D1D. Check the specifications of the test
equipment to determine if this precaution is adequate or necessary.
A. Tower Recommendations
When deployed at locations like cell sites or broadcast towers that are particularly susceptible to lightning
strikes, Pulsecom recommends the use of 5-pin primary protectors with 5-ohm heat coils, such as Bourns part
number 303M-09H3GH or equivalent, for added lightning protection.
