ADC Telecommunications DVLRCS800 Digivance Long Range Coverage Solution 800 MHz Sys User Manual 75124

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Document ID	247602
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Document Description	part 4
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Date Submitted	2002-06-06 00:00:00
Date Available	2002-06-06 00:00:00
Creation Date	2002-04-04 10:49:22
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Document Title	75124.book
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FCC ID: F8I-DVLRCS800 - User Manual Part 4
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
2.1
Turn-Up Procedure
Use the following procedure to turn-up the system:
1. Temporarily disconnect the external alarm system or notify the alarm system provider that
testing is in progress.
2. If turning-up multiple HU and RU systems that have not been configured for operation
before, temporarily disconnect the CAN cables from the NET IN and NET OUT ports of
each HU.
Note: By default, all HU’s and RU’s are programmed with the same site number and
name. This can cause problems for the Digivance EMS if multiple HU’s with the same site
number and site name are networked together through the CAN interface. It is therefore
advisable to temporarily disconnect the CAN interface cables from the HU until a unique
site number and name can be entered for each HU and its corresponding RU.
3. Determine if the forward path composite input signal level at the Host Unit FORWARD
RF IN port is between –10 and –40 dBm and adjust level by installing an external
attenuator if required. Refer to Section 2.3 for the calculation and adjustment procedure.
4. Connect the EMS computer (if not already connected) to the SERVICE connector on the
HU or STM front panel. If necessary, a separate laptop computer loaded with the EMS
software can be temporarily connected and used to initially configure the system.
5. Place the ON/OFF switch on the HU in the ON position (press I).
6. Place the ON/OFF switch on the STM in the ON position (press I).
7. Wait 6 to 8 seconds for the HU and the RU modules to initialize and then observe the LED
indicators on the HU, STM and LPA. Refer to Section 5 for the troubleshooting
procedures if the indicators do not respond as specified.
HOST UNIT
SPECTRUM TRANSPORT MODULE
LINEAR POWER AMPLIFIER
POWER – Green
STANDBY – Off
HOST UNIT – Green
AC POWER – Green
FAIL – Off
STANDBY – Off
HOST UNIT – Green
SHUTDOWN – Red
REMOTE UNIT – Green
STM – Green
DRIVE – Green, Yellow, or Red
PA – Green
PORT 1/PORT 2 – Green
VSWR – Green
PORT 3 – Green
(diversity unit only)
PORT 1/PORT 2 – Green
Digital Display – FORCED
SHUTDOWN
PORT 3 – Green
(diversity unit only)
8. Start up the Digivance EMS software program. The EMS main window will open as
shown in Figure 4-1. Note: The EMS software should be installed on a PC-type computer
and the PC’s COM port should be configured to interface with the HU. For information
about installing the EMS software and configuring the PC’s COM port, refer to the
Digivance Element Management System Software User Manual (ADCP-75-125).
Page 4-3
© 2002, ADC Telecommunications, Inc.
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
Click to view drop
down menu
Figure 4-1. Digivance Element Management System Main Window
9. Open the View drop down menu and connect to the Host and Remote pair by selecting
“NotNamed/NotNamed”. The HOST Alarms display and the REMOTE Alarms display
will open within the main window as shown in Figure 4-2.
10. Download the system software to both the Host and the Remote unit. Refer to Section 2.2
for details.
Host/Remote pair
site name
Clicking on the tabs in
this list will open the corresponding display.
Figure 4-2. Selecting Display Tabs
Page 4-4
© 2002, ADC Telecommunications, Inc.
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
11. Click on the HOST Config tab and on the REMOTE Config tab (see Figure 4-2). The
HOST Config display and the REMOTE Config display will open within the main
window.
12. Enter the Site Name and Site Number for both the HOST and the REMOTE unit. Refer to
Section 2.4 for details.
13. Reconnect the CAN cables to the HU’s NET IN and NET OUT ports.
14. Verify that no Major (except Major Extern Alarm) or Minor alarms are being reported in
either the HOST or REMOTE Alarm displays and that all alarm fields (except Major
Extern Alarm) are green.
15. Click on the HOST RF tab (see Figure 4-2). The HOST RF display will open within the
main window.
16. Enter the Host Fwd Att (Forward Attenuation) values. This sets the forward input RF signal
level at the HU. Refer to Section 2.5 for details. By default, this value is set to 0 dB. If the
DRIVE LED on the HU front panel was red, it should turn green when this step is completed.
17. Determine if the RF output power at the STM ANTENNA is at the correct level per
channel up to a composite maximum of +44.5 dBm. Refer to Section 2.6 for details.
18. Click on the REMOTE LPA tab (see Figure 4-2). The REMOTE PA display will open
within the main window.
19. Enter the Remote Fwd Att value. This adjusts the RF output signal level at the STM
ANTENNA port. Refer to Section 2.7 for details. By default this value is set to 0 dB.
20. Place the RF ON/OFF switch (on LPA front panel) in the ON position.
21. Verify that the SHUTDOWN LED indicator (on LPA front panel) turns from red to off and
the Digital Display message changes from FORCED SHUTDOWN to NORMAL
OPERATION.
22. Click on the HOST RF tab (see Figure 4-2). The HOST RF display will open within the
main window.
23. Enter the Host Rev Att (Reverse Attenuation), and Host Div Rev Att (Diversity Reverse
Attenuation) values. This sets the reverse output RF signal levels at the HU. Refer to
Section 2.8 for details.
24. If a delay adjustment is required per the system design plan, enter the Host Fwd Delay,
Host Rev Delay, and Host Div Rev Delay values. By default, the delay values are set to 0.
Refer to Section 2.9 for details.
25. If a separate laptop computer loaded with the EMS software was used to initially
configure the system, disconnect the laptop computer from the SERVICE connector on the
HU front panel.
Note: Each HU and RU pair will generally remain permanently connected to a PC-type
desktop computer loaded with the EMS software. When two or more systems are
connected together through the CAN interface, only one EMS computer is required to
manage the networked HU and RU systems. The EMS computer may be connected to the
SERVICE port on any one of the HUs in the network.
Page 4-5
© 2002, ADC Telecommunications, Inc.
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
26. Reconnect the external alarm system or notify the alarm system provider that the turn-up
process has been completed.
2.2
Download HU and RU System Software
The HU’s and RU’s may require a system software download to make them operational. Use the
following procedure to download the system software:
1. Click on the HOST Prg Load tab and on the REMOTE Prg Load tab. The HOST Prg
Load display and the Remote Prg Load display will open within the EMS main window
as shown in Figure 4-3.
Verify software version
before starting download.
Click to start download to HOST.
Click to open Select Control
Program window for HOST
Click to start download to REMOTE.
Click to open Select
Control Program window for REMOTE.
Verify software version
before starting download.
Figure 4-3. HOST and REMOTE Prg Load Displays
2. Click on the HOST Select button (see Figure 4-3). The Select Control Program File
window will open as shown in Figure 4-4. Browse until the folder where the Control
Program files are located is selected and the software files are displayed in the window.
Page 4-6
© 2002, ADC Telecommunications, Inc.
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
Figure 4-4. Select Control Program File Window
3. Check the software version numbers shown in the Software Info section of the Prg Load
display against the version numbers of the software files displayed in the Select Control
Program File window. If files in the Select Control Program File window are a later
version than those shown in the Prg Load display, proceed with the software download. If
the version numbers shown in the Software Info section are the same as the version
numbers of the files in the Select Control Program File window, the software download
is not required.
4. Select the required file to download and click on the OK button.
5. Click on the HOST Load button (see Figure 4-3) to start the download.
6. Repeat steps 2 through 4 for the REMOTE.
2.3
Determine Forward Path Input Signal Level
The level of the composite RF input signal at the FORWARD RF IN port at the HU will vary
depending on the type of BTS, the cable loss, and the number of channels present. To interface
with the HU, the signal level of the composite forward path RF signal must be adjusted to fall
within a range of –10 to –40 dBm. If the signal level is not within this range, it must be adjusted
to fall within this level through the use of an external attenuator. Use the following procedure to
measure and adjust the input RF signal level at the HU:
1. Connect a spectrum analyzer or power meter to the forward path output port at the BTS.
The required signal levels and test points are shown in Figure 4-5.
2. Measure the RF level of a single carrier, such as the control channel, in dBm. Make sure
the resolution bandwidth of the spectrum analyzer or power meter is narrow enough to
measure the power of the single 30 kHz channel only.
3. Verify that all carriers are coming in at equal power at bandwidth and adjust to the same
level if necessary.
Page 4-7
© 2002, ADC Telecommunications, Inc.
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
4. Calculate the total composite signal power from the BTS using the following formula:
Ptot = Pc + 10Log N – (see Note)
Where,
Ptot is the total composite power in dBm
Pc is the power per carrier in dBm as measured in step 2, and
N is the total number of channels.
Note: Subtract 16.23 dBm if calculating the composite power for a CDMA system.
5. Determine the total cable loss that is imposed by the forward path coaxial cable that links
the BTS to the HU and also any insertion loss imposed by splitters or combiners.
6. Subtract the total cable loss and any insertion losses from the total composite power
calculated in step 4.
7. Subtract –25 (the midpoint of the required range) from the value determined in step 6. The
difference (which should be positive) equals the value of the external attenuator that is
required to reduce the forward path signal level to fall within the required range. The
following formula outlines the required calculations for steps 6 and 7:
Ptot – (Cable and insertion loss) – (–25) = Value of external attenuator required
Note: If the input signal level is already within the required range of –10 to –40 dBm, then
no external attenuator is required.
8. Select an attenuator that is as close to the value calculated in step 7 as possible. Select a
value that will adjust the signal level of the composite input signal to fall within the
specified range.
9. Install the external attenuator in the coaxial cable that is connected to the FORWARD RF
IN port at the HU.
Caution: The Host Unit can be damaged if it is overdriven by the BTS. Always install an
external protective attenuator at the Host Unit FORWARD RF IN port if the forward path
composite input signal level is greater than –10 dBm.
10. Subtract the value of the external attenuator used in step 9 from the total composite signal
power (Ptot) and record the result. This value will be required when setting the attenuation
of the HU’s internal forward attenuator.
Page 4-8
© 2002, ADC Telecommunications, Inc.
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
BASE
TRANSCEIVER STATION
RECEIVERS
TRANSMITTERS
EXTERNAL
ATTENUATOR
INPUT SIGNAL LEVEL
(-10 to -40 dBm
COMPOSITE)
HOST UNIT
ADJUSTMENTS TO OUTPUT
SIGNAL LEVEL AS SET BY HOST
REVERSE PATH ATTENUATOR
0 to 30 dB
ATTENUATOR
(HOST REV ATT)
0 to 30 dB
ATTENUATOR
(HOST FWD ATT)
RF, OPTICS,
AND CONTROL
ADJUSTMENTS TO INPUT
SIGNAL LEVEL AS SET BY HOST
FORWARD PATH ATTENUATOR
OPTICAL LINK
REMOTE UNIT
RF, OPTICS,
AND CONTROL
0 to 30 dB
ATTENUATOR
(REMOTE FWD ATT)
LPA
ADJUSTMENTS TO
OUTPUT SIGNAL LEVEL
AS SET BY THE REMOTE
FORWARD ATTENUATOR
PRIMARY
ANTENNA
DUPLEXER
MAXIMUM OUTPUT SIGNAL
LEVEL AT STM ANTENNA PORT
17000-C
Figure 4-5. Signal Levels, Test Points, and Adjustments
Page 4-9
© 2002, ADC Telecommunications, Inc.
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
2.4
Enter Site Name and Site Number
All HU’s and RU’s are programmed with the same site name and site number. It is therefore
necessary to assign a unique site name and site number to the HU and RU before they can be
connected to the same CAN. Use the following procedure to assign a unique site name and
number to each HU and RU system:
1. Click on the HOST Config tab and on the REMOTE Config tab. The HOST Config
display and the REMOTE Config display will open within the EMS main window as
shown in Figure 4-6.
Right-Click on the
point shown to open
pop-up screen
HOST Site Number
HOST Site Name
REMOTE Site Number
(Entered automatically
when the HOST site
number is selected)
REMOTE Site Name
Figure 4-6. HOST and REMOTE Config Displays
2. Right-click on the HOST Site Name field (see Figure 4-6). The Site Name pop-up screen
will open as shown in Figure 4-7. Enter a unique name for the HOST. The name may be up
to 32 characters long and must not contain any spaces. The name may include numbers,
punctuation, and upper or lower case letters and must always begin with a letter. Click on
OK to close the screen and make the changes take effect.
Figure 4-7. HOST Site Name Pop-Up Screen
Page 4-10
© 2002, ADC Telecommunications, Inc.
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
3. Right-click on the HOST Site Number (see Figure 4-6). The Site Number pop-up screen
will open. Enter any number between 1 and 24 and then click on OK to close the screen
and make the changes take effect.
4. Check the REMOTE Site Number field (see Figure 4-6). The REMOTE Site Number
does not have to be entered. When the HOST Site Number is entered, the system will
automatically enter the same number for the REMOTE Site Number.
5. Right-click on the REMOTE Site Name field (see Figure 4-6). The Site Name pop-up
screen will open. Enter a unique name for the REMOTE. The name may be up to 32
characters long and must not contain any spaces. The name may include numbers,
punctuation, and upper or lower case letters and must always begin with a letter. Click on
OK to close the screen and make the changes take effect.
6. Open the Tools menu at the top of the main window and then select Refresh Catalog to
make the new Host and Remote site names appear in the View menu.
2.5
Enter Host Forward Attenuation
The HU internal forward path attenuator setting determines the maximum composite output
signal level at the STM antenna port. The appropriate attenuation value for any particular
system is based on the number of channels the system is transporting and the signal level of the
composite forward path input signal input at the HU’s FORWARD RF IN port. The maximum
output power that can be provided by the system is 44.5 dBm (28.8 watts). The total forward
path gain that is provided by the system (with host and remote forward attenuators set to 0 dB)
is 84.5 dBm. Use the following procedure to set the forward path attenuation to provide the
maximum composite output signal level:
1. Click on the HOST RF tab. The HOST RF display will open within the EMS main
window as shown in Figure 4-8.
2. Right-click on the Host Fwd Att section of the display (see Figure 4-8). The Host Fwd
Att pop-up screen will open as shown in Figure 4-9.
3. Obtain the value of the total composite input signal level as determined in step 10 of
Section 2.3.
4. Determine the appropriate value to enter for the Host forward path attenuator by
subtracting the required system output level (per system design plan) from 84.5 (the total
system gain) and then adding the composite input signal level. The result (see sample
calculation) is the amount of attenuation required.
Atten Required = 84.5 – (Required System Output Power) + (Composite Input Power)
5. Enter the attenuation value and click OK to close the pop-up screen and to make the
changes take effect.
Page 4-11
© 2002, ADC Telecommunications, Inc.
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
Right-click here
to open Host Fwd
Att pop-up screen
Figure 4-8. HOST RF Display
Figure 4-9. Host Fwd Att Pop-Up Screen
2.6
Determine Output Signal Level at STM Antenna Port
The RF output signal level should be measured at the STM ANTENNA port to verify that
maximum composite signal level is at the required level. Use the following procedure to
determine the power level:
1. Verify that RF ON/OFF switch on the LPA in the OFF position.
2. Disconnect the antenna cable from the STM ANTENNA port.
3. Connect a spectrum analyzer or RF power meter to the STM ANTENNA port. (Check the
input rating of the test equipment and insert a PAD if necessary.)
Page 4-12
© 2002, ADC Telecommunications, Inc.
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
4. Place the RF ON/OFF switch on the LPA in the ON position.
5. Measure the RF level of a single carrier, such as the control channel, in dBm. Make sure
the resolution bandwidth of the spectrum analyzer or power meter is narrow enough to
measure the power of the single 30 kHz channel only.
6. Calculate the total composite signal power using the following formula:
Ptot = Pc + 10Log N – (see Note)
Where,
Ptot is the total composite power in dBm
Pc is the power per carrier in dBm as measured in step 2, and
N is the total number of channels.
Note: Subtract 16.23 if calculating the composite power for a CDMA system.
7. Record the result calculated in step 6.
8. Place the RF ON/OFF switch on the LPA in the OFF position.
9. Disconnect the spectrum analyzer or RF power meter from the STM ANTENNA port.
10. Re-connect the antenna cable to the STM ANTENNA port.
Note: To comply with Maximum Permissible Exposure (MPE) requirements, the
maximum composite output from the antenna cannot exceed 1000 Watts EIRP and the
antenna must be permanently installed in a fixed location that provides at least 6 meters
(20 feet) of separation from all persons.
2.7
Enter Remote Forward Attenuation
The STM internal forward path attenuator setting is used to increase or reduce the power level
of the composite output signal level at the STM antenna port. The maximum composite output
signal level at the STM antenna port is set using the Host internal forward attenuator (see
Section 2.4). However, component variations may result in the output power at the STM
antenna port being slightly above or below the required power per channel. If this is the case,
the STM forward attenuator may be used in conjunction with the Host forward attenuator to add
or remove attenuation to produce the required output signal level. If less power is required, the
STM forward attenuator may be used to reduce the power level. The default setting is 0 dB. Use
the following procedure to change the STM forward attenuation:
1. Click on the REMOTE LPA tab. The REMOTE LPA display will open within the EMS
main window as shown in Figure 4-10.
Page 4-13
© 2002, ADC Telecommunications, Inc.
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
Right-click here to
open the Remote Fwd
Att pop-up screen
RF output signal level
Figure 4-10. REMOTE LPA Display
2. Check the level of the RF output signal (as determined in Section 2.6) against the system
design plan specifications. Table 4-1 shows the output signal level required to provide 5
watts per channel for systems with 1 to 5 channels. The maximum output signal level
permitted for the system is 44.5 dBm (28.8 watts).
3. Determine if more or less attenuation is required to produce the required output signal level.
4. Right-click on the Remote Fwd Att section of the display (see Figure 4-10). The Remote
Fwd Att pop-up screen will open as shown in Figure 4-11.
5. Enter the required attenuation value and click OK to close the pop-up screen and to make
the changes take effect.
Table 4-1. Composite Output Signal Levels
NUMBER OF
CHANNELS
OUTPUT SIGNAL LEVEL
REQUIRED TO PROVIDE 5
WATTS PER CHANNEL
37 dBm
40 dBm
42 dBm
43 dBm
44 dBm
When there are six or more channels, each
channel will always be less than 5 watts since
the system has a maximum power output of
28.8 watts (44.5 dBm).
Page 4-14
© 2002, ADC Telecommunications, Inc.
ADCP-75-124 • Issue B • April 2002 • Section 4: Operation
Figure 4-11. Remote Fwd Att Pop-Up Screen
6. Verify that the appropriate RF output signal level appears in the RF Pwr-VSWR Low
section (see Figure 4-10). This is primarily a reference value and should not take the place
of external test equipment when determining the power level of the composite RF output
signal. Depending on the modulation type and number of channels, the EMS software may
report a power level that is higher or lower than the actual RF output signal.
Note: To comply with Maximum Permissible Exposure (MPE) requirements, the
maximum composite output from the antenna cannot exceed 1000 Watts EIRP and the
antenna must be permanently installed in a fixed location that provides at least 6 meters
(20 feet) of separation from all persons.
2.8
Enter Host Reverse Attenuation
The level of the RF signal that should be input to the BTS will vary depending on the type of
BTS, the receive distribution, and the number of channels present. To interface with the BTS,
the reverse path signal level must be adjusted to provide the signal level required by the BTS.
The HU provides from 0 dB to +30 dB of gain in the reverse path. Use the following procedure
to set the reverse path gain:
1. Check the BTS manufacturer’s specifications to determine the composite signal level
required at the BTS reverse path input port.
2. Determine the overall gain and loss imposed on the signal by the antenna, antenna cable,
and by the cables that connect the HU to the BTS.
3. Determine the amount of gain required to raise the reverse path signal to the level required
at the BTS.
4. Click on the HOST RF tab. The HOST RF display will open within the EMS main
window as shown in Figure 4-12.
Page 4-15
© 2002, ADC Telecommunications, Inc.

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