Westell Inc. CSI-DSP85-U7C User Manual

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: power supply cable connectors are keyed for proper orientation, but if forced can be inserted incorrectly.

Great care should be taken to avoid this as it may damage the connectors and/or the repeater.

A complete line of accessories is available from Cellular Specialties, Inc. Check with your CSI distributor for any additional items

needed.  Below are just a few examples suitable for most in-building needs.

•Directional Couplers
     6dB - model number: CSI-DC6/700-2K/N

     10dB - model number: CSI-DC10/700-2K/N

     15dB - model number: CSI-DC15/700-2K/N

     20dB - model number: CSI-DC20/700-2K/N

     30dB - model number: CSI-DC30/700-2K/N

•Outside Donor Antenna
      Panel - model number: CSI-AP/698/2.2K/7-10

•UPS
      Battery backup, 2 hr Single band

      1 hour dual band - model number: CS48-985-600

 Battery backup, 4 hr Single band

 2 hour dual band - model number: CS48-985-601

•Power Dividers
      2:1 - model number: CSI-SPD2/700-2.5K/N

      3:1 - model number: CSI-SPD3/700-2.5K/N

      4:1 - model number: CSI-SPD4/700-2.5K/N
•Grounding Kit - model number: CSI-GKIT
•Lightning Arrestor - model number: CSI-CAP

•Inside Omnidirectional Antenna
      Quad-band - model number: CSI-AO/700/2.5K/3

   

•Mounting Kit

  19” rack or wall mountable -

  model number: CSI-RWM-DSP85

•       Inadequate isolation between the outside and inside antennas may cause regenerative feedback in the system. This feedback
can cause the amplifier to emit a continuous signal at maximum amplitude and, in some cases, interfere with normal operation of the
donor site. Careful consideration of the layout and placement of the system is imperative to minimize this possibility and to minimize
the amount of signal leaking from the building. See installation tips below for general guidelines.
•

The installer should refer to the Safety Guidelines section on page 4 and the Important Safety Information section on page 5 for

proper antenna selection and installation. To avoid serious injury or death and damage to the repeater, do not install donor or server
antennas near overhead power lines or high power components.   Allow enough distance so that if antennas should fall they will not
come in contact  with those components.
•••••

Close proximity  to the donor or server antennas with the repeater in operation may expose the user or installer to RF fields that

exceed FCC limits for human exposure.

 

 AMPLIFIER OR HANDSET DAMAGE MAY OCCUR IF A HANDSET IS CONNECTED DIRECTLY TO THE REPEATER OR THE COAX

THAT LEADS TO THE REPEATER.

1.

Accurately determine  the azimuth to the donor cell site . 

2.

Ensure that the radiation path to the donor cell site is as unobstructed as possible.

3.

Mount the donor antenna at or toward the edge of the roof, in the direction of the donor site. Try to avoid having the

RF signal from the donor pass above the location(s) of the service antennas.  Normally the service antennas will be
behind and below the donor antenna if viewed from above. This approach will help avoid interference and feed back
both, to and from the service antennas.
4.

Normally mounting the donor antenna higher will allow a less obstructed path to the donor site.  However, in high

traffic metro areas avoid mounting the donor antenna any higher than necessary as the quality of the donor signal may
start to become less stable and it is more likely to encounter adjacent channel interference.
5.

When possible shield the donor antenna’s back side by locating it so that any HVAC units and/or penthouse struc-

tures are behind the antenna relative to the donor cell site location.

1.

Use omnidirectional antennas (see optional accessories) indoors, and locate them centrally with respect to the

intended coverage area to minimize signal leakage to the outside. Use directional antennas indoors only in special cases
when higher gain and directionality would be helpful and RF exposure limits will not be exceeded.
2.

To avoid repeater uplink overload and gain limiting mount the indoor antennas away from areas where mobile subscrib-

ers frequently use their phones such as desks or dispatch areas.