Vanu Inc. 0AD1C0010 ユーザーズマニュアル
ADCP-75-163SDR • Issue 1 • September 2004
Page 9
© 2004, ADC Telecommunications, Inc.
fibers must be terminated with duplex LC connectors for connection with the SDR card.
Remote unit has SC connectors.
Remote unit has SC connectors.
The maximum length of the optical links is dependent on the loss specifications of the optical
fiber and the losses imposed by the various connectors and splices. The system provides an
optical budget of 20dB (typical) when used with 9/125 single-mode fiber.
fiber and the losses imposed by the various connectors and splices. The system provides an
optical budget of 20dB (typical) when used with 9/125 single-mode fiber.
Whenever possible, use conduit or a guideway to route optical fibers between the SDR PCIx
Host card and the remote (radio head) unit. Avoid routing optical fibers through ladder type
cable racks or troughs that do not provide sufficient support to limit bending or prevent
accidental damage. Tie-wrapping is not recommended as a means of securing fiber optic cables.
Provide sufficient slack at each unit for connecting each fiber to the required port. Fibers may
be pre-terminated or terminated on-site using field-installable LC type connectors.
Host card and the remote (radio head) unit. Avoid routing optical fibers through ladder type
cable racks or troughs that do not provide sufficient support to limit bending or prevent
accidental damage. Tie-wrapping is not recommended as a means of securing fiber optic cables.
Provide sufficient slack at each unit for connecting each fiber to the required port. Fibers may
be pre-terminated or terminated on-site using field-installable LC type connectors.
3.3.2
Optical Connections
The optical interface between the SDR PCIx Host card and the remote (radio head) unit is
supported by two optical ports. Each of the SDR PCIx Host card optical ports provides a duplex
LC-type optical transceiver which is mounted on the SDR PCIx Host card front. The remote
(radio head) unit has SC connectors.
supported by two optical ports. Each of the SDR PCIx Host card optical ports provides a duplex
LC-type optical transceiver which is mounted on the SDR PCIx Host card front. The remote
(radio head) unit has SC connectors.
The FWD and REV ports provide forward and reverse optical communications channels in a
non-diversity system. The REV DIV port provides receive optics for a diversity system See
non-diversity system. The REV DIV port provides receive optics for a diversity system See
for transceiver port designations. See
for port designations.
Note: To insure that all optical connectors and transceivers remain dust-free during
installation, leave all dust caps and dust protectors in place until directed to remove them
for connection.
installation, leave all dust caps and dust protectors in place until directed to remove them
for connection.
Table 1. Transceiver Port Designations
DESIGNATION
DIRECTION
REMARKS
FWD
Output
Forward path (downlink) signal.
REV
Input
Reverse path (uplink) signal.
TEST
Not used
REV DIV
Input
Receive optics.
Danger: This equipment uses a Class 1 Laser according to FDA/CDRH rules. Laser radiation
can seriously damage the retina of the eye. Do not look into the ends of any optical fiber. Do not
look directly into the optical transceiver of any digital unit or exposure to laser radiation may
result. An optical power meter should be used to verify active fibers. A protective cap or hood
MUST be immediately placed over any radiating transceiver or optical fiber connector to avoid
the potential of dangerous amounts of radiation exposure. This practice also prevents dirt
particles from entering the transceiver or connector.
can seriously damage the retina of the eye. Do not look into the ends of any optical fiber. Do not
look directly into the optical transceiver of any digital unit or exposure to laser radiation may
result. An optical power meter should be used to verify active fibers. A protective cap or hood
MUST be immediately placed over any radiating transceiver or optical fiber connector to avoid
the potential of dangerous amounts of radiation exposure. This practice also prevents dirt
particles from entering the transceiver or connector.