GS Instech GSTR1937DT-SPR CDMA In-Building RF Repeater User Manual 1

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Document ID	809994
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Document Description	User Manual
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Document Type	User Manual
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Date Submitted	2007-06-29 00:00:00
Date Available	2007-08-13 00:00:00
Creation Date	2007-06-21 15:56:49
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Document Title	붙임서류1
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FCC ID : U88GSTR1937DT-SPR
ATTACHMENT E.
- USER MANUAL -
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INFORMATION TO USER :
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely
to cause harmful interference in which case the user will be required to correct the interference
at his own expense.
CAUTION
Changes or modifications not expressly approved
by the manufacturer responsible for compliance
could void the user's authority to operate the equipment
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- INDEX ATTACHMENT E............................................................................................................1
- USER MANUAL - ..........................................................................................................1
1. SUMMARY .................................................................................................................4
2. SYSTEM CONFIGURATION .....................................................................................5
3. SPECIFICATIONS...................................................................................................10
3.1 Electrical Specifications (applicable to both Uplink & Downlink)............................................... 10
3.2 Electrical and Environment Specifications .......................................................................................... 10
3.3 Functions.......................................................................................................................................................... 11
4. SET UP .....................................................................................................................13
4.1 System Set up ................................................................................................................................................ 13
4.2 Troubleshooting ............................................................................................................................................ 16
5. WEB USER INTERFACE .........................................................................................17
5.1 IP Address verification and Explorer setting ...................................................................................... 17
5.2 PCS Web UI ..................................................................................................................................................... 18
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1. SUMMARY
US PCS 1900 RF repeater is an analog RF repeater, which improves PCS network.
US PCS 1900 RF repeater receives RF signal from BTS and transmits it to the blanked and
shadowed area, thus providing and improving voice and image data services. US PCS 1900 RF
repeater’s goal is to support BTS’s functions proportionately.
US PCS 1900 RF repeater communicates with BTS wirelessly, thus saving additional costs for its
maintenance.
US PCS 1900 RF repeater consists of PA (Downlink, Uplink), IF, LNA (Downlink, Uplink), I/O &
Control divisions, which are supplied with Alarm LED, thus providing quick and easy
maintenance and troubleshooting of the repeater.
This manual describes in general structure of US PCS1900 repeater, its application, maintenance
and troubleshooting, installation and operation etc.
Abbreviation
PA: Power Amplifier
IF: Intermediate Frequency
LNA: Low Noise Amplifier
I/O: Input/Output
Ethernet Instruction “ This equipment is indoor use and all the communication wirings
are limited to inside of the building” or similar texts.
Replaceable batteries instruction
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECTIVE TYPE.
DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS
For PLUGGABLE EQUIPMENT, the socket-outlet shall be installed near the
equipment and shall be easily accessible.
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2. System Configuration
2.1 US PCS 1900 service organization
US PCS 1900 repeater decreases blanked and shadowed areas and extends cell coverage by retransmitting signal. The signal is received from BTS via Antenna directly, thus excluding
additional expenses for signal transmission (like cabling). Service organization of CDMA Inbuilding RF repeater is shown at the picture below. Donor Antenna is directed to BTS, and being
divided at Service Antennas are installed in the building and parking place. Pass Loss should be
taken into consideration while dividing and cabling.
 US PCS 1900 Service organization
2.2 System Design and Operation
2.2.1 System design
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FCC ID : U88GSTR1937DT-SPR
9 7
10
11
12
13
1 Donor Cavity
2 Service Cavity
3 I/O & NMS Board 4 IF-10MHz
5 IF-15MHz
6 IF-20MHz
7 RVS LNA
Waveform Detector 10 FWD HPA
11
RVS HPA
8 FWD LNA
12
Power Supply
13 HUB
 Repeater’s inside structure
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 Repeater’s Top and Bottom panels
 AC & DC ports
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2.2.2 Uplink Path
FWD and RVS Gain Budgets have similar structure. In case of Uplink Path, RF signal is
transmitted from Service Antenna to Service Cavity Filter and RVS LNA division, then the signal
is transferred to IF division, where desirable Band is selected by passing 6 Paths of RF Switch
and SAW filter. Selected Band is got together in FWD LNA division, and then transmitted to
Donor Antenna passing through Digital ATT (10dB ATT Range) and Donor Cavity Filter. Then the
signal is transmitted to BTS through Donor Antenna.
 Uplink Block Diagram
2.2.3 Downlink Path
Downlink Path is organized in reverse order of Uplink Path.
In case of Downlink Path, RF signal is transmitted from Donor Antenna to Donor Cavity Filter
and FWD LNA division, then the signal is transferred to IF division, where desirable Band is
selected by passing 6 Paths of RF Switch and SAW filter. Attenuation range is 40dB in Digital
Attenuator. Selected Band is transmitted to FWD Drive Am and Service Cavity Filter, after that
the signal is transferred to Service Antenna.
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 Downlink Block Diagram
2.2.4 US PCS Frequency Selection
1930
1945
1950
1965
1970
1975
1990
1995
f (MHz)
1915
f (MHz)
< Forward Band Structure >
1850
1865
1870
1885
1890
1895
1910
< Reverse Band Structure >
 PCS Band Structure
US PCS 1900 repeater has 5MHz, 10MHz, 15MHz, 20MHz Paths in IF division, so any of these
bandwidths can be chosen for providing service. But there are some cases when this choice is
not applicable.
Not continuous 4 Paths [5 MHz each], so total band is 20MHz (i.e. A1A3B2C1,
A1A2B1B2)
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3. Specifications
3.1 Electrical Specifications (applicable to both Uplink &
Downlink)
Characteristics
Frequency Range
Specification
Forward
1930 ~ 1995MHz
Reverse
1850 ~ 1915MHz
System Group Delay
< 5㎲
Characteristic Impedance
50 ohm
VSWR
Max1.5 : 1
Input Power Range
-58 ~ -18dBm (for both Uplink and Downlink)
System Isolation
> 90dB
Gain Range
55dB ~ 95 dB
Noise Figure
< 4.5 dB @ Max Gain
<12 dB @Min Gain
Gain Adjustment Step(Accuracy)
1dB(±0.5dB)
Pass Band Ripple
2.5dB(±1.25dB)
Maximum Output Power
5W / 37dBm
>45 dBc @885kHz
Spurious Emissions
>55 dBc @1.98kHz
<-13dBm @Fc±2.25MHz (RBW: 1MHz)
IF Path
5MHz/10MHz/15MHz/20MHz
(SAW Filter Bandwidth)
IF Frequency
FWD: 200 MHz, RVS: 120MHz
Band Select
Local Shift & RF Switching
Roll Offs
> 50dBc @1MHz
Waveform Quality Factor
min 0.912
3.2 Electrical and Environment Specifications
Characteristics
Specification
Size(inch) / Type
16.1(W) x 23.6(L) x 7.17(H)
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FCC ID : U88GSTR1937DT-SPR
Power
AC 120V 60Hz 5.5A
Temperature / Weight
Connector TYPE
0℃ ~+50℃/26kg
N Type Female
3.3 Functions
Parameter
Specification
• Adjustable DL and UL Gain range 55~95dB
Gain Control
• Display default Gain and current Gain function
• It always operates in Downlink AGC ON status
AGC
• To maintain same Downlink output power despite flexible input signal
Auto Gain Control
strength.
• To add or subtract Attenuation level referring to AGC Power Limit level.
• To limit output power as far as default range
• Set up via GUI
• Automatic Gain decrement when output power of repeater is higher than
ALC
Auto Limit Control
default level
• Automatic Gain recovery when output power of repeater is reduced.
• Shutdown when output power is higher than default level in Minimum Gain
• Automatic Recovery Algorithm conversion after Shutdown status
• Downlink ATT is applied to Uplink during AGC state
Gain Balance
• Setting and maintenance of output level
• Additional attenuation to ALC Level
• Isolation Check in initial set up or Reset
• Monitoring Oscillation comparing to minimum/maximum Noise Floor level
Oscillation Check
• When Oscillation occurred, repeater attempts to stabilize Isolation through
Gain control function.
• Shutdown repeater when Oscillation still goes in Minimum Gain
• Automatic Recovery Algorithm conversion after Shutdown status
• Noise Floor Observation in case of ±2.25MHz down at the center
• In case of Noise level > –13dBm, Spurious Emission is stabilized
Spurious Emission
Alarm
automatically
• In case of Oscillation Spurious Emission Alarming in Minimum Gain,
repeater will be shutdown
• Automatically Switch to Recovery Algorithm at Shutdown
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Band Select
• To select either 5MHz/10MHz/15MHz/20MHz
Power Monitoring
Function
DL Input control
Automatic Recovery
• Monitoring repeater’s output level
• Monitoring Donor ANT input power of DL
• When in repeater shutdown, it periodically recovers output power of
repeater then monitors alarming
• Support HTTPS for Web Browser security
Security
• User authentication through User ID and Password
• Monitoring temperature of repeater
Temperature
• Maximum and minimum set up is possible. Shutdown in over temperature
control
• Automatic recovery after temperature becomes normal. (Hysteresis 10
degree)
• Monitoring VSWR of Donor ANT Port (Every one and half minute)
VSWR Monitoring
• Reporting VSWR Alarm and Shutdown when the rate is 3:1
• Automatic Recovery Algorithm conversion after Shutdown status
IP address report
via E-mail
• When in PPP reconnection, E-mail which includes HTML to connect to
newly assigned IP Address, reports to operator.
DHCP Client
• Automatic IP assignment
DHCP Server
• Server function for automatic IP assignment
Web GUI
SNMP Agent
LED Display
• Remote and local user browser support through Web Browser
• NMS report via SNMPv2 Trap
• LED displays power and operation status on front side of repeater system.
• DL input and output signal level is verified by LED bar.
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4. SET UP
4.1 System Set up
4.1.1 Constitution (based on 1 SET)
Parameter
Major accessory
Additional components
User Manual
Item
Quantity
US PCS 37 dBm Case
1 EA
Main power input Cable
1 EA
Fixable Screw
1 SET
Mountable Bracket
1 EA
Manual
1 EA
4.1.2 Notice
1 ) System Power check : Major electricity is A C 1 2 0 V, therefore please input electricity after power
verification.
2) Input condition optimization: DL input condition is -56 ~ -16dBm. User should verify input condition of
Donor ANT.
3) Isolation check between DONOR/SERVICE ANT: Isolation condition of this equipment is 95dBc (Gain+
15dB). User should check its condition before installation.
 MS 3100 A 10SL-3 (Wall Mount Receptacle) & MS3010 A 10SL-3(Plug)
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4.1.3 System set up
1) This equipment is basically wall mountable installation.
2) Once aforementioned process is done, open for service get ready.
3) For grounding, there is a grounding terminal in main power supply side and the grounding
terminal on a site and unit should be connected same.
4) System installation work is basically performed more than two people and should be careful for
unexpected accident.
4.1.4 Open for service
 Case mounts
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1) Check points before open
a. Verification of system installation status
Electricity, In/out antenna, coaxial cable connection, equipment mounts status.
b. Verification of system accessories
User should check whole necessary accessories.
c. Check receipt signal level
User should check whether receipt environmental condition is in accordance with system specification,
so that system operation will be optimized.
2) Check points after open
a. Check by external LED
① RUN: Green light ON (Off: Green light off)
② ALARM: Green light in normal status, Red light in alarming
③ SHUT DOWN: Green light in normal status, Red light in Shutdown
⑤ Number of LED bar on front side of repeater will show input signal level.
Less than -56dBm: LED 1bar
-56dBm~-48dBm: LED 2bars
-48dBm~-39dBm: LED 3 bars
-39dBm~-31dBm: LED 4 bars
-31dBm~-23dBm: LED 5 bars
Number of LED bar in output power side will show output power signal level
Less than +30dBm: LED 1bar
+31dBm~+33dBm: LED 2 bars
+34dBm: LED 3 bars
+35dBm: LED 4 bars
More than +36dBm: LED 5 bars
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 Front LED Indicator
4.2 Troubleshooting
In case, abnormal operation is detected, user should check abnormal parts via remote accessible
function or field debug, then conduct repair after turn it off.
4.2.1 Necessary Testing and Measuring equipment
a. RF Power Meter: 10Watt Max, 50ohm
b. Signal Generator: 3GHz
c. Spectrum Analyzer: 3GHz
d. Multi Meter
4.2.2 Notice
a. Trouble shooting should be performed with drastic knowledge basis.
b. Unsure parts should not be disassembled.
c. When in trouble shooting, technician should use attenuator to check output side.
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5. WEB USER INTERFACE
5.1 IP Address verification and Explorer setting
5.1.1 IP Address verification and Explorer setting
(1) Start->Control Panel->Network Connections
(2) Double-click Local Area Connections at LAN or High Speed internet
(3) Click Internet Protocol (TCP/IP) at General tap and click Properties.
(4) Apply automatic IP address assignment at local connection
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(5) Verify assigned IP address at local connection.
(Unless IP address is not assigned, please click repair.)
5.1.2 Explorer option setting
- Proceed step by step as indicated in below. All files
and records should be removed.
- Set up mode will be displayed after (2) click.
- Please proceed along following set up mode screen
shot.
5.2 PCS Web UI
5.2.1 Web UI connection
- Input desirable IP address.
- Default Use Name and Password for Web UI is ‘admin’.
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5.2.2 Link menu
- Following screen shot is located left-top side of main menu and those are linked to relative
window.
5.3 Web UI control
5.3.1 Status
- Currently setting level check at this menu tap.
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5.3.2 RF Configuration
- Setting level can be changed at this menu tap.
- (1) Level change
- (2) Click Apply button
5.3.3 Alarm Configuration
- (1) On/Off function for entire alarm report
- (2) Alarm status
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- (3) On/Off function for individual alarm category
- (4) Alarm SNMP Mapping
- User may set and change its level per it field condition and click apply button.
5.3.4 Communication Configuration
- This provides all necessary information related to network
- To provide relative information about DHCP and modem
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5.3.5 User Management
- Add and Remove user, Assigning accessibility
- (1) User Registration: Click Register after input required information
- (2) User Removal: Click Delete upon click of user name you wish to remove.
- (3) Super User: Accessible to all kinds of information path
Read/Write: Accessible to all kinds of information path except for User management path.
Read: Checking status only. No control
5.3.6 Logs
- All users’ access record will be saved as a log.
5.3.7 Sub System/Mailing List
- Set up e-mail address the place you wish to receive alarm.
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5.3.8 Troubleshooting
Following is a trouble shooting table, which is frequently occurred to repeater and treatment
method.
5.3.9 Remote Software Upgrade
Upload repeater operation program.
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5.3.10 System Reset
- Reset repeater.
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