G Way Solutions PS825W60R Bi-Directional Amplifier User Manual FCC ID OIW CBDAESMR1W60

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Document ID	1766991
Application ID	Bq28qLpiWSvsWEUC9I3jVA==
Document Description	User manual
Short Term Confidential	No
Permanent Confidential	No
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Document Type	User Manual
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Filesize	36.13kB (451582 bits)
Date Submitted	2012-08-15 00:00:00
Date Available	2012-08-16 00:00:00
Creation Date	2012-08-13 09:35:21
Producing Software	Acrobat Distiller 8.3.1 (Windows)
Document Lastmod	2012-08-13 09:36:03
Document Title	FCC ID: OIW CBDAESMR1W60
Document Creator	Acrobat PDFMaker 8.1 for Word
Document Author:	Sean

INSTALLATION
AND
OPERATING MANUAL
FOR
RHBDA-PS8-0.1/25W-55-A (R)
RACK BI-DIRECTIONAL AMPLIFIER
TABLE OF CONTENTS
PARAGRAPH
PAGE NO
RHBDA OVERVIEW
RHBDA BLOCK DIAGRAM DESCRIPTION
OPTIONAL EXTERNAL FILTER (Figure 1)
RHBDA BLOCK DIAGRAM DRAWING (Figure 2)
ELECTRICAL SPECIFICATIONS
MECHANICAL CONNECTIONS
ENVIRONMENTAL CONDITIONS
RHBDA CONNECTIONS
MECHANICAL OUTLINE DRAWING (Figure 3)
OPTIONAL ALARM CONDITIONS (Figure 3a)
RHBDA INSTALLATION
RHBDA OPERATION
FRONT PANEL ADJUSTMENT (Figure 4)
BACK PANEL CONNECTORS (Figure 4a)
RF EXPOSURE WARNING
DIAGNOSTICS GUIDE
Page 2
10
10
11
11
RHBDA OVERVIEW:
The RHBDA assembly enhances the coverage area of radio communications in
buildings and RF shielded environments. The unit features low noise figure and wide
dynamic range. It is based on a duplexed path configuration with sharp out of band
attenuation allowing improved isolation between the receiving and transmitting paths.
RHBDA BLOCK DIAGRAM DESCRIPTION:
Refer to Figure 1 for the following discussion.
The RHBDA Downlink path receives RF signals from a Source, amplifies the RF
signal, and transmits the signal to the subscriber. The RHBDA Uplink path receives
RF signals from the subscriber then amplifies the RF Signal, and sends it to the
Base. The Uplink and Downlink occupy two distinct frequency bands. The frequency
bands are as follows: 806-824 MHz for the Uplink and 851-869 MHz for the Downlink.
Two Filters and one diplexer isolate the Uplink and Downlink paths.
A selectable Automatic Level Control (ALC) allows for output power limiting. A
variable step attenuator gives 0 – 30 dB of attenuation in 2 dB steps on the Rack
Uplink and Rack Downlink paths. The use of these controls is covered in the
“OPERATION” section, later in this document.
Page 3
Figure 2
1.
2.
4.
5.
3.
6.
RHBDA BLOCK DIAGRAM
1. Downlink Filter - has a narrow bandpass and high selectivity.
2. Downlink LNA & Attenuator – 0-30 dB in 2-dB steps of attenuation on the Downlink
input signal with a pre-amplifier that has 20 dB gain.
3. Downlink HPA – is a High power amplifier with an ALC circuit which offers 40dB Gain.
4. Uplink Filter - has a narrow bandpass and high selectivity.
5. Uplink LPA – is a Low power amplifier consisting of two modules, with an ALC circuit
which offers 60dB Gain.
6. Mobile Diplexer - has low bandpass insertion loss and high selectivity.
Page 4
ELECTRICAL SPECIFICATIONS:
Frequency Range
Uplink
Downlink
: 806-824 MHz
: 851-869 MHz
System Pass band Gain @ min attenuation
Downlink
: 60 dB (Typ.)
Uplink
: 60 dB (Typ.)
Variable Step Attenuator Range (2-dB steps)
Uplink
: 0-30 dB
Downlink
: 0-30 dB
Pass band Ripple
: ±1.5 dB (Typ.)
Noise Figure @+25°C at max gain
Uplink
: 5.0 dB (Max.)
3rd Order Intercept point
Downlink
: +55 dBm (Typ.)
*Output Power @ 1dB Compression
Downlink
: +44 dBm (Typ.)
*Output power per Carrier
Uplink
Single Carrier
: +5.0 dBm
Downlink
Single Carrier
: +36.0 dBm
Input/ Output Impedance
: 50 Ohms
VSWR (Input/Output)
: 1.5: 1 (Max.)
Power Supply
: 110VAC/1.5 Amp
: 220VAC/0.75 Amp
: 50 to 60 Hz
*The Manufacturer's rated output power of this equipment is for single carrier operation. For situations
when multiple carrier signals are present, the rating would have to be reduced by minimum of 3.5 dB,
especially where the output signal is re-radiated and can cause interference to adjacent band users.
This power reduction is to be by means of input power or gain reduction and not by an attenuator at
the output of the device. (See above table for multiple carrier signal output power ratings)
Page 5
MECHANICAL SPECIFICATIONS:
Size
: 19.0 x 13.0 x 5.25 inch
: (482.2 x 330.2 x 133 mm)
RF Connectors
: N-Type Female
Weight
: 23.0 Lbs. (10.45 kg.) approx.
ENVIRONMENTAL CONDITIONS:
The unit is designed for indoor applications:
Operating temperature: - 20°C to + 55°C
Storage temperature: - 50°C to + 90°C
RHBDA CONNECTIONS
The RHBDA Rack AC power is accepted through a standard 3-wire male plug (IEC320) with phase, neutral and ground leads (See Figure 3). The AC power is wired to
a high efficiency DC switching power supply which is CE and UL approved. The Rack
power supply runs the amplifiers, the Power ON lamp, and Fiber Optic Transceiver.
The metal enclosure of the RHBDA is connected to ground.
An optional 9-pin D-Sub connector provides failure alarm output contacts (see
diagram next page) as well as an optional 12 VDC (250mA) auxiliary output.
The RF connections are made via three type “N” female connector on the back panel
(See Figure 3). The RF connection on the Rack Unit labeled “MOBILE” must be
connected to the antenna facing the area to be covered by the RHBDA. The RF
connector labeled “UL OUT” must be connected to the RF Source Signal going to the
Base. The RF connection labeled “MOBILE DL” must be connected to the RF Source
Signal from the Base.
The RF connections must be made through cables with characteristic impedance of
50 ohms.
The isolation between the base station antenna and the mobile antenna should
be at least 12 dB higher than the RHBDA gain. Isolation less than this value can
cause gain ripple across the band. Isolation equal to or less than the RHBDA
gain will give rise to oscillations which will saturate the amplifiers and possibly
cause damage to the RHBDA.
Page 6
Figure 3
RHBDA Mechanical Outline
BASE-IN
BASE-OUT
MOBILE
GND
POWER
0...30 dB
Gain Adjustment
UPLINK
0...30 dB
Gain Adjustment
DOWNLINK
RACK BDA
BAND D
Figure 3a
Conditions for Optional Alarm
The alarm monitors current of both uplink and
downlink amplifiers. An alarm condition will
occur if either uplink or downlink amplifiers are (Relay Shown in Non-Alarm Condition)
over or under its current tolerance or if there is
no DC power present.
Page 7
RHBDA INSTALLATION
DO NOT APPLY A.C. POWER TO THE RHBDA UNTIL CABLES ARE
CONNECTED TO BOTH PORTS OF THE RHBDA AND THE
ANTENNAS.
1. Side the RHBDA into the 19” accessible rack. Mount the RHBDA to the rack. Using
appropriate screws, attach the RHBDA to the rack at the four mounting holes on the
Front panel.
2. Ensure that the isolation between the donor antenna and the service antenna is at
least 12 dB greater than the RHBDA gain. (Use the higher of the Uplink and
Downlink gains reported on the RHBDA test data sheet).
3. Connect the cable from the service antennas to the RHBDA connector labeled
“MOBILE” and connect the cable going to the Base RF Signal Source to the RHBDA
connector labeled “UL OUT”, and the cable coming from the Base RF Signal Source
to the RHBDA connector labeled “DL IN”.
4. Verify that all attenuation settings are positioned at 30 dB.
5. Connect the AC power cord to the Rack Unit. Turn the power switch to the “ON”
position. Verify that each Green “Power ON” lamp, Laser alarms LED’s are
illuminated.
Installation of the Rack RHBDA’s is now complete. To adjust the gain controls to suit
the specific signal environment, refer to the next section of the manual.
Note: For repeat installations of existing equipment, make sure the attenuation
is positioned to its maximum setting (30 dB). After verification of the
attenuation, follow the above steps starting with step 1.
Page 8
RHBDA OPERATION
Refer to figure 3 for adjustment access location and label.
Variable Step Attenuator
The RHBDA’s gain can be reduced on the Rack Unit by up to 30 dB on the Uplink
and Downlink, in 2 dB steps using the variable step attenuators. Gain adjustment is
made with rotary switches accessible via the Front panel on the RHBDA enclosure.
Arrows on the shafts of these switches point to the value of attenuation selected.
RHBDA gain can be determined by subtracting the attenuation value from the gain
reported on the RHBDA Test Data Sheet for that side of the unit. The attenuators are
labeled for Uplink and Downlink.
ALC (Automatic Level Control)
To minimize intermodulation products, each amplifier in the RHBDA contains an ALC
feedback loop. The ALC circuit senses the output power and limits it to the factory
preset level of +5 dBm for the Uplink and +36 dBm for the Downlink. Two red
indicator lamps are located on the Front panel which illuminate when the output
power exceeds the ALC set point.
Two red indicator lamps are located on the Front panel which illuminate when the
output power exceeds the ALC set point.
To establish proper operating gain on the Rack Unit, start with the Downlink. Observe
the red indicator lamp on the front panel. Units are shipping with maximum
attenuation. Decrease attenuation one step at a time until the lamp is lit. Then, using
the Downlink step attenuator, increase the attenuation until the lamp goes off. The
Uplink ALC function is to avoid overloading the fiber optic transceiver. Setting the
attenuation of the Uplink will depend on minimum and maximum distance from the
mobile to sever antennas. The level indicator is accurate to +/- 0.4 dB of the ALC set
point.
Operation of the RHBDA-PS8-0.1/25W-55-A at maximum gain (Minimum
Attenuation) with greater than -10 dBm average power incident on the MOBILE
port may cause damage to the RHBDA.
Page 9
Figure 4
Rack Front Panel Adjustment
Downlink ALC &
Alarm LED’s
Uplink ALC &
Alarm LED’s
Power
Switch
Downlink
Attenuator
28
30
14 16 18 20
12
10
12
14 16 18
30
22 24 26
Uplink
Attenuator
28
20
26
Figure 4a
Rack Back Panel Connections
UL/DL In & Out
Connectors
Mobile
Connector
Page 10
AC Power Inlet
Optional Alarm
Connector
8 10
RF EXPOSURE WARNING
The antenna used for this transmitter must be fixed-mounted on outdoor permanent
structures. In order to satisfy the FCC RF exposure requirements, the BDA/antenna
installation must comply with the following:
The downlink indoor antenna (Omni type or similar directional antenna) must be installed so
as to provide a minimum separation distance of 0.35 meters (35 cm) between the antenna
and persons within the area. (This assumes a typical antenna with Unity gain (VSWR ≤ 1.5:1,
Zo= 50 ohms, and a cable attenuation of between 2-10 dB)
The uplink outdoor antenna (Yagi type or similar directional antenna) must be installed so as
to provide a minimum separation distance of 0.35 meters (35 cm) between the antenna and
persons within the area. (This assumes a typical antenna with maximum gain of [10 dBi,
VSWR ≤ 1.5:1, Zo= 50 ohms, and a cable attenuation of between 2-10 dB).
DIAGNOSTICS GUIDE
The BDA provides long term, care-free operation and requires no periodic maintenance.
There are no user-serviceable components inside the BDA. This section covers possible
problems that may be related to the installation or operating environment.
a. Gain Reduction
Possible causes: Bad RF cables and RF connections to antennas, damaged antennas.
b. Excessive Intermodulation or Spurious
Possible causes:
Amplifier oscillation caused by insufficient isolation. The isolation between two antennas is
given by the equation:
Isolation = 92.5 + 20 Log (F x D) – Gt – Gr
Where:
F = frequency (GHz)
Gt = transmit antenna gain (in the direction of the receive antenna)
D = separation (Km)
Gr = receive antenna gain (in the direction of the transmit antenna)
For example, at the PS8 frequencies, the antenna isolation at 100 m separation is about 71
dB for Omni-directional antennas (0 dB gain). To increase isolation, the antennas should
have higher directivity and must be pointed away from each other.
c. Occasional Drop-out of some Channels
Possible causes: One channel with very strong power dominates the RF output of the
amplifier.
Page 11

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Title                           : FCC ID: OIW CBDAESMR1W60
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