ADC DNYSMR1A User Manual

ADCP-75-187 • Issue 1 • September 2005 • Section 2: DESCRIPTION

Table 2-6. Interim Single-Band Remote Unit Nominal Specifications

PARAMETER SPECIFICATION REMARKS

Physical/Environmental/ Electrical - Remote Unit

Dimensions (L×W×D) 37.3 × 10.2 × 7.5 inches

(947 × 259 × 191 mm)

Mounting Pole, wall, or strand mounted Requires accessory kit for strand

mounting

Weight 79.5 lbs. (36.1 kg) With solar shields installed

Weather resistance NEMA 4X, IEC IP 67 Indoor or outdoor installation

Lightning protection 20 kA IEC 1000-4-5 8/20 µs

waveform

With external protector (accessory)

Operating temperature –30º to 50º C (–22º to 122º F)

Storage temperature –40º to 70º C (–40º to 158ºF)

Humidity 10% to 90% No condensation

AC power connector Mini 3-pin 3-wire power cable included

Antenna connector(s) 50 ohm N-type (female) 50 ohms input/output impedance

Optical port OptiTap with APC/SC connector

and adapter

Voltage input 90 to 265 VAC, 47 to 63 Hz

60 to 89 VAC, 47 to 63 Hz

Standard Option

Power consumption 150 Watts

Current rating 1.25 Amps at 120 VAC

.625 Amps at 240 VAC

Reliability at 25ºC MTBF - 80,000 hours

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ADCP-75-187 • Issue 1 • September 2005 • Section 2: DESCRIPTION

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SECTION 3: OPERATION

Content Page

1 BEFORE STARTING OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

1.1 Tools and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1

1.2 Readiness Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

2 TURN-UP SYSTEM AND VERIFY OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

2.1 Turn-Up Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

2.2 Determine Forward Path Input Signal Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6

2.3 Enter Site Name and Site Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8

2.4 Enter Host Forward Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10

2.5 Determine Output Signal Level at RU Antenna Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

2.6 Enter Remote Forward Attenuation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12

2.7 Enter Host Reverse Attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14

2.8 Enter Host Forward and Reverse Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

_________________________________________________________________________________________________________

ADCP-75-187 • Issue 1 • September 2005 • Section 3: OPERATION

1 BEFORE STARTING OPERATION

This section provides guidelines for turning-up the Digivance system, verifying that all units are operating properly, testing to ensure that all performance requirements are satisfied, and correcting any installation problems. This process assumes that the various units have been installed in accordance with the system design plan.

1.1 Tools and Materials

The following tools and materials are required in order to complete the procedures in this section:

• Portable spectrum analyzer and RF power meter

• DC voltmeter

• External RF and optical attenuators (if specified in system design plan)

• PC-type computer with Digivance Element Management System (EMS) Version 3.01 software installed

• Straight-through RS-232 DB-9 interface cable (accessory)

• Subscriber unit

•Pencil or pen

• Writing pad

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ADCP-75-187 • Issue 1 • September 2005 • Section 3: OPERATION

1.2 Readiness Check

Before starting the turn-up process, inspect the complete Digivance system to verify that all components of the system are ready to be powered-up. This will ensure that no units of the system will be damaged during turn-up and that all existing systems will continue to function properly.

1.2.1 Host Unit Installation Checks

Complete the following checks at the HU prior to starting the turn-up process:

1. Verify that the ON/OFF switch on the HU is in the OFF position (press O).

Note: When connecting the equipment to the supply circuit, be sure to check equipment nameplate ratings to avoid overloading circuits which may cause damage to over-current protection devices and supply wiring.

2. At the fuse panel, install a 3 Amp GMT fuse in the circuit that supplies DC power to the HU.

3. Using a DC voltmeter, verify that the DC voltage level at the HU power terminals is between ± 21 to ± 60 VDC (nominal ± 24 or ± 48 VDC). The DC power provided to the HU can be either polarity.

4. Verify that all electrical and optical connections have been completed and that all optical fibers, coaxial cables, and wires are properly routed and secured.

1.2.2 Remote Unit Installation Checks

Complete the following checks at the RU prior to starting the turn-up process:

1. Verify that all electrical and optical connections have been completed and that all optical fibers, coaxial cables, and wires are properly routed and secured.

2. At the AC breaker box, make sure the circuit breaker for the circuit that supplies AC power to the RU is in the open (off) position.

2 TURN-UP SYSTEM AND VERIFY OPERATION

The process of turning-up the system and verifying operation involves powering up the various system components, verifying that the LED indicators show normal operation, setting the site number and name, adjusting the RF signal levels, and adjusting the path delay.

Note: SCS systems that include a dual-band RU are comprised of two systems that operate and function independently of each other. Each system can be independently turned-up, tested, and placed into service. The EMS will recognize each system regardless of the frequency/band and will display the appropriate screens. The frequency/band can be verified by clicking on the HOST Host tab and on the REMOTE STM tab. The frequency/ band for the selected system will be displayed on the right side of the screen.

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2.1 Turn-Up Procedure

Each Digivance system must be turned-up separately before being networked together with multiple systems through the CAN interface. Use the following procedure to turn-up each Digivance system:

1. Temporarily disconnect the external alarm system or notify the alarm system provider that testing is in progress.

2. If the HU is networked together with multiple HU’s, temporarily disconnect the CAN cables from the NET IN and NET OUT ports of the 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 EMS if multiple HU’s with the same site number and site name are networked together through the CAN interface. It is therefore necessary to temporarily disconnect the CAN interface cables from the HU when it is being configured for operation until a unique site number and name can be assigned.

3. Determine if the forward path composite input signal level at the host unit RF IN port(s) is appropriate to produce the required RF output signal level. Note that 800/900 MHz SMR host units have two forward path RF ports. Adjust by installing an external attenuator if necessary. For adjustment purposes, the optimum input signal level is –20 dBm for 800/ 900 MHz SMR systems. Refer to Section 2.2 for the calculation and adjustment procedure.

ADCP-75-187 • Issue 1 • September 2005 • Section 3: OPERATION

4. At the HU: Place the ON/OFF switch on the HU in the ON position (press I).

5. At the RU: Place the AC circuit breaker switch in the closed (ON) position.

6. Wait 6 to 10 seconds for the HU and the RU to initialize and then observe the LED indicators on the HU and RU. Refer to Section 4: Maintenance for the troubleshooting procedures if the indicators do not respond as specified in Ta ble 3-1.

Table 3-1. LED Indicator Operation at Initial Turn-Up

REAR ACCESS HOST UNIT REMOTE UNIT

POWER – Green

STANDBY – Off

HOST UNIT – Green

REMOTE UNIT – Green

DRIVE 851–869 – Green, Yellow, or Red DRIVE 935–940 – Green, Yellow, or Red

FWD/REV (PORT 1/PORT 2) – Green

No LED designation – Off

Note: This LED will stay red for 6 to 10 seconds while the RU initializes and then turn off.

7. Measure the input optical power level at the HU and RU and verify that the optical power level received at the HU and RU is within –15 to –25 dBm with –17 dBm recommended for commissioning. Refer to Section 4: Maintenance for the optical power test procedure.

8. Connect the EMS computer (if not already connected) to the SERVICE connector on the HU front panel. If necessary, a separate laptop computer loaded with EMS Version 3.01 software can be temporarily connected and used to initially configure the system.

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ADCP-75-187 • Issue 1 • September 2005 • Section 3: OPERATION

9. Start up the EMS Version 3.01 software program. The EMS main window will open as shown in Figure 3-1. The EMS software should be installed on a PC-type computer and the PC’s COMM port should be configured to interface with the HU. For information about installing the EMS software and configuring the PC’s COMM port, refer to the Digivance Element Management System Version 3.01 User Manual (ADCP-75-182).

Click to view drop down menu

Figure 3-1. Digivance Element Management System Main Window

10. Open the View drop down menu and connect to the Host and Remote pair by selecting the “NotNamed/NotNamed” Host/Remote pair. The HOST Alarms display and the REMOTE Alarms display will open within the main window as shown in Figure 3-2.

Host/Remote pair site name

Clicking on the tabs in this list will open the corresponding display.

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Figure 3-2. Selecting Display Tabs

ADCP-75-187 • Issue 1 • September 2005 • Section 3: OPERATION

11. New Control program software and FPGA program software will be provided separately on a “as needed” basis. If new Control and FPGA software is not provided with the system, proceed to step 12. If a Control and FPGA software upgrade is required, contact the ADC Technical Assistance Center (see Section 5) for help with the download procedure.

12. Click on the HOST Config tab and on the REMOTE Config tab (see Figure 3-2). The HOST Config display and the REMOTE Config display will open within the main window.

13. Enter the Site Name and Site Number for both the HOST and the REMOTE unit. Refer to

Section 2.3 for details.

Note: The Site Name and Site Number must be unique for each Digivance system.

14. If the Digivance system will be networked together with other Digivance systems, reconnect the CAN cables to the HU’s NET IN and NET OUT ports.

15. Verify that no Major or Minor alarms are being reported in either the HOST or REMOTE

Alarm displays (except as indicated in the note below) and that all alarm fields are green.

Note: The Host RF Underdrive may indicate a minor alarm until the Host Fwd Att and

Remote Fwd Att values are set.

16. Click on the HOST RF tab (see Figure 3-2). The HOST RF display will open within the main window.

17. Enter the Host Fwd Att (Forward Attenuation) value. This sets the forward input RF signal level at the HU. Refer to Section 2.4 for details. By default, this value is set to 31 dB. If the DRIVE LED on the HU front panel was red, it should turn green when this step is completed. Note that 800/900 MHz SMR HU’s have two DRIVE LED’s.

18. Determine if the RF output power at the RU ANTENNA is at the correct level up to a composite maximum of +38.1 dBm (6.5 Watts) for 800/900 MHz SMR systems. Refer to

Section 2.5 for details.

19. Click on the REMOTE RF tab (see Figure 3-2). The REMOTE RF display will open within the main window.

20. Enter the Remote Fwd Att value. This adjusts the RF output signal level at the HU ANTENNA port. By default this value is set to 31 dB. Refer to Section 2.6 for details.

21. Click on the HOST RF tab (see Figure 3-2). The HOST RF display will open within the main window.

22. Enter the Host Rev Att (Reverse Attenuation) values. This sets the reverse output RF signal levels at the host unit RF OUT port(s). By default each value is set to 31 dB. Refer to Section 2.7 for details. Note that 800/900 MHz SMR host units have two REVERSE RF OUT ports.

23. If a delay adjustment is required, enter the Host Fwd Delay and Host Rev Delay values. By default, the delay values are set to 0. Refer to Section 2.8 for details.

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ADCP-75-187 • Issue 1 • September 2005 • Section 3: OPERATION

24. 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.

Note: When two or more HU’s are connected together through the CAN interface, only one EMS computer is required to manage the networked Digivance systems. The EMS computer may be connected to the SERVICE port on any one of the HUs in the network.

25. Reconnect the external alarm system or notify the alarm system provider that the turn-up process has been completed.

2.2 Determine Forward Path Input Signal Level

The level of the composite RF input signals received at the host unit FORWARD RF IN port(s) will vary depending on the EBTS, the cable loss, the number of channels present, and the required forward path composite power. If maximum composite RF output is required at the RU, the level of the composite RF input signal received at the HU must fall within a range of –9 to –40 dBm. If the signal level is not within this range, it must be adjusted using an external attenuator. Note: The 800/900 MHz SMR host unit has two FORWARD RF IN ports. Use the 851–869 FORWARD RF IN port to complete this procedure. Then repeat this procedure for the 935–940 FORWARD RF IN port.

Warn ing: The Host Unit can be damaged if it is overdriven by the EBTS. The forward path composite input signal level at the Host Unit FWD RF IN port must not exceed –9 dBm.

Note: The optimum level for an 800/900 MHz SMR composite input signal is –20 dBm

When connecting a single HU to a single EBTS, 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 EBTS.

The required signal levels and test points for 800/900 MHz SMR systems are shown in

Figure 3-3. Note that 800/900 MHz SMR Host Units have two forward path ports.

Note: Check the input rating of the test equipment and the output rating of the EBTS. To avoid burning out the spectrum analyzer or power meter, it may be necessary to insert a 30 dB 100W (or similar) attenuator between the EBTS and test equipment.

2. If using a spectrum analyzer, proceed to step 3. If using a power meter, measure the composite signal power from the EBTS and then proceed to step 5.

3. Measure the RF level of a single carrier, such as the control channel, in dBm. Make sure the resolution bandwidth of the spectrum analyzer is 30 kHz. Maximum composite power in any channel should not exceed 5W (+37 dB).

4. Calculate the total composite signal power from the EBTS using the following formula:

= Pc + 10Log N where,

tot

is the total composite power in dBm

tot

is the power per carrier in dBm as measured in step 3, and

N is the total number of channels.

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ADCP-75-187 • Issue 1 • September 2005 • Section 3: OPERATION

ENHANCED BASE TRANSCEIVER STATION

RECEIVER

REVERSE PATH OUTPUT

SIGNAL LEVEL AS SET BY HOST

REVERSE PATH ATTENUATORS

HOST UNIT

806-824

ATTENUATORS

(HOST REV ATT)

RECEIVER

0 to 31 dB

896-901

AND CONTROL

OPTICAL LINK

851-869 TRANSMITTER

RF, OPTICS,

935-940 TRANSMITTER

EXTERNAL

ATTENUATORS

0 to 31 dB

ATTENUATORS

(HOST FWD ATT)

FORWARD PATH

INPUT SIGNAL LEVEL

AT HOST UNIT

(-20 dBm OPTIMAL

COMPOSITE FOR

FULL POWER)

FORWARD PATH SIGNAL

LEVEL AS SET BY HOST

FORWARD PATH

ATTENUATORS

(ADJUST TO -40 dBm

COMPOSITE

FOR FULL POWER)

RF, OPTICS,

AND CONTROL

0 to 31 dB

ATTENUATORS

REMOTE UNIT

MAXIMUM OUTPUT SIGNAL

LEVEL AT ANTENNA PORT

(37 dBm AT FULL POWER)

(REMOTE FWD ATT)

LPA

QUADRAPLEXER/FILTER

FORWARD PATH SIGNAL

LEVEL AS SET BY REMOTE

FORWARD PATH

ATTENUATORS

ANTENNA

Figure 3-3. Signal Levels, Test Points, and Adjustments for 800/900 MHz SMR Systems

20577-A

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ADCP-75-187 • Issue 1 • September 2005 • Section 3: OPERATION

5. Determine the total cable loss that is imposed by the forward path coaxial cable that links the EBTS 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 –20 (optimum input signal level) 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 the optimum level for input to the HU. The following formula outlines the required calculations for steps 6 and 7:

– (Cable and insertion loss) – (–20) = Value of external attenuator required

tot

Note: If the input signal level is already –20 dBm, no external attenuator is required.

8. Select an attenuator that is as close to the value calculated in step 7 as possible.

9. Install the external attenuator in the coaxial cable that is connected to the corresponding FORWARD RF IN port at the HU.

Caution: The Host Unit can be damaged if it is overdriven by the EBTS. Always install an

external protective attenuator at the Host Unit FWD RF IN port if the forward path composite input signal level is greater than –9 dBm.

10. Repeat steps 1–9 for the 935–940 FORWARD RF IN port at the HU. Install the external attenuator in the coaxial cable that is connected to the 935–940 FORWARD RF IN port at the HU.

11. Subtract the value of the external attenuator from the total composite signal power (P and record the result. This value will be required when setting the attenuation of the HU’s internal forward path attenuators.

2.3 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 network. 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 3-4.

2. Click on the HOST Site Name Edit button (see Figure 3-4). The Site Name pop-up screen will open as shown in Figure 3-5. 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.

tot

)

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Click on the Edit button 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

ADCP-75-187 • Issue 1 • September 2005 • Section 3: OPERATION

Figure 3-4. HOST and REMOTE Config Displays

Figure 3-5. HOST Site Name Pop-Up Screen

3. Click on the HOST Site Number Edit button (see Figure 3-4). The Site Number pop-up

screen will open. Enter any number (must be unique) 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 3-4). 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. Click on the REMOTE Site Name Edit button (see Figure 3-4). 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.

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ADCP-75-187 • Issue 1 • September 2005 • Section 3: OPERATION

2.4 Enter Host Forward Attenuation

The HU internal forward path attenuator setting determines the maximum composite output signal level at the RU 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 signals input at the host units RF IN ports. By default, the forward path attenuator is set to 31 dB.

The maximum output power is 38.1 dBm (6.5 Watts) for 800/900 MHz SMR systems. The total forward path gain that is provided by the system (with host and remote forward attenuators set to 0 dB) is 77.5 dBm for 800/900 MHz SMR systems. Note that for 800/900 MHz SMR systems, this procedure sets the attenuation for both FORWARD RF IN ports.

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 3-6.

Click on Edit button to open Host Fwd Att pop-up screen

Figure 3-6. HOST RF Display

2. Click on the Host Fwd Att Edit button (see Figure 3-6). The Host Fwd Att pop-up screen

will open as shown in Figure 3-7.

3. Obtain the value of the total composite input signal level as determined in step 11 of

Section 2.2.

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ADC DNYSMR1A User Manual

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