DAS Interface Panels
DAS Interface Panels
DAS850/1900/700/2100 MHz
SISO Plus Products
DAS700D, DAS850D & DAS2100D
Many smartphone users in a concentrated area can
quickly cripple the network’s data throughput. Examples
of this can be experienced at venues such as stadiums,
convention centers, hospitals and college campuses.
Service providers are increasingly implementing a
distributed antenna system (DAS) to create a small cell
infrastructure that will relieve the burden on the macro
network. A critical component in a fiber-fed DAS is the
head end where RF signals are converted to optical
signals. Carriers must ensure the RF power levels are
appropriately adjusted for the DAS head end equipment.
Westell, a trusted partner to service providers for more
than 30 years, has developed a DAS interface panel that
will ensure RF power is safely delivered throughout the
Westell’s DAS interface panels reduce installation time, require minimal rack space, are convection cooled, require no
AC or DC power and provide RF power adjustments without
interrupting service.
MIMO or Dual SISO Products
The DAS interface trays are located between the base
transceiver station (BTS) and the head end of the DAS. The
DAS850/1900/700/2100 provides the proper power levels
for the downstream DAS equipment and can be connected
to two BTSs simultaneously. Both transmit and receive power levels can be monitored and adjusted without disconnecting from the BTS or the DAS head end.
The 1900 is a 1RU model, while the 850, 700 and 2100 are
2RU models. The 850 covers the cellular band, the 1900 is
for the PCS band, the 700 is for the upper/lower 700 MHz
band, and the 2100 covers the AWS band.
Exterior Hut
Host Unit
(Head End)
DAS Interface Panels
DAS Interface Panels
Product Specifications
Order Number 2
Order Number 2
Order Number 2
Order Number 2
B90-DAS1900D-D3 A90-DAS2100D-D3
A90-DAS1900D-S A90-DAS2100D-S
Order Number 2
Order Number 2
SISO Plus Products
Operating Frequency
Cellular Band
Power Handling
(7/16” DIN)
700 MHz Bands
MIMO or Dual SISO Products
PCS Band
AWS Band
700 MHz Bands
60 watts/port at 55°C (131°F)
40 watts/port at 65°C (149°F)
IMD at TX/RX port in RX
Band (typical)
AWS Band
65 watts/port at 55°C (131°F)
60 watts/port at 65°C (149°F)
-118dBm or -161dBc (two +43dBm input signals)
Peak Power
1 KW
Min Isolation
70 dB
TX Insertion Loss (typ.)
20 dB
15 dB
RX Insertion Loss (typ.)
5.5 dB
2 dB
Adjustable Tx Power
Attenuates from 0-50 dB (1 dB increments)
Adjustable Rx Power
Attenuates from 0-50 dB (1 dB increments)
BTS Inputs
7/16” DIN (Female)
DAS or Head End
Female: QMA or SMA (specified by ordering #)
Tx & Rx Monitoring Ports
(depth includes
front panel knobs)
N-type (Female)
2RU H x 17” W x
19.91” D
2RU H x 17” W x
18.14” D
1RU H x 17” W x
23.92” D
(Depth excluding
front knobs 18.43”)
(Depth excluding
front knobs 16.65”)
(Depth excluding
front knobs 22.46”)
2RU H x 17” W x 18.14” D
(Depth excluding front panel knobs 16.65”)
25 lbs
30 lbs
Operating Temp. Range
-40° C to +65° C
1) Specifications subject to change. 2) Provided with QMA connectors for DAS head end connections. 3) Provided with SMA connectors for DAS head end connections.
Feature Highlights
1 or 2 rack unit (RU) height
Universal mounting brackets are included to enable
mounting in 19” and 23” racks
Sturdy aluminum construction with powder-coated
enamel painted face plate
Flush mount or 5” projection
Temperature hardened for outdoor applications
Other models available; contact Westell for details
Inside Sales / Support:
Westell, Inc.
750 N. Commons Drive
Aurora, IL 60504
Westell is a registered trademark of Westell, Inc. Availability of features and specifications
subject to change without notice. This document is the property of Westell, Inc. and its
contents are proprietary and may neither be copied, reproduced nor its contents disclosed
to others without prior written agreement from Westell.
opyright 2013 Westell, Inc.
All rights reserved.
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