Motorola BLE100 operation manual Alignment Procedure

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Amplifier Setup

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Perform the return optical link set up before performing amplifier set up

Specify reverse alignment design levels for a single carrier

Consider sweep equipment as a single carrier and operate at design levels

Do not include injection point losses in reverse design levels

If JXP THERM devices (JXP-TH*C) are specified for level control, they should be installed in the JXP THERM pad facility (illustrated in Figure 2-8).

Alignment Procedure

The return amplifier configuration includes one high-gain (30 dB) return amplifier hybrid, and an appropriate SRE-*-* equalizer. All components are plug-in and are easily installed.

To align the return path:

1If the BLE100 is powered, remove all fuses before you perform the following steps.

2Install the design value pad in the return output pad location (JXP OUT).

3Install the design value return equalizer, SRE-*-*, in the RTN EQ location.

4Verify that the return input pad location (JXP-IN) has a 0 dB pad (or JXP-ZX jumper) installed.

5If you require an ICS, install it in the ICS location. If you plan to install the ICS later, install a JXP-2B to simulate the through-loss of the ICS. This eliminates the need to rebalance the return path if you install the ICS later.

6Verify that the return output pad socket (JXP OUT), located between the hybrid output and the SRE-*-*, has a 0 dB pad (or JXP-ZX jumper) installed.

7Verify that the return thermal pad socket (JXP THERM), located between the hybrid output and the SRE-*-*, has a 0 dB pad (or JXP-ZX jumper) or JXP-TH*C installed.

8Set the sweep equipment output level to the amplifier’s design input level. Add insertion point loss.

9If required, change the return output pad (JXP OUT) and/or return equalizer to achieve, as close as possible, a match of the reference level as compared to the node.

10Verify the sweep response of all insertion points if applicable.

11Verify that the pad and equalizer values are similar to the map design values.

You can verify proper return alignment by injecting a carrier, at the design level, into any amplifier at random. Proper alignment is achieved if you observe the reference level at the headend optical receiver output.

BLE100 Installation and Operation Manual

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Contents Installation BLE100 Special Symbols That Might Appear on the Equipment Page Contents Specifications Bench TestingInstallation Operating TipsTables Torque Specifications Abbreviations and AcronymsAppendix B Introduction BLE100 closedBLE100 open BLERelated Documentation Using This ManualDocument Conventions If You Need Help Motorola Online http//businessonline.motorola.comCalling for Repairs Overview BLE100 base with electronics moduleOrdering Matrix BLE100 ordering matrixHousing BLE-HSG/15 housing and dimensionsHousing gaskets GasketsHousing ports Port LocationsPower Supply BLE100 power supplyForward Path BLE100 block diagramReturn Path BLE100 options and accessories Ingress Control SwitchOptions and Accessories Model Description FunctionSRE SFE-100SCS RCB JXP Bench Setup Amplifier SetupProper Handling Procedures Field PracticeForward Path Alignment Before You BeginStarline Cable Equalizers ExampleStarline Forward Equalizers SFE-100 Slope SFE-100Equalizer slope versus cable Frequency Cable slope in dB Starline Cable SimulatorsStarline Cable Simulators Flatness Control Input and Midstage PadsFrequency versus cable slope Bode Equalization Directional Coupler Test PointsLDR/9/1G component layout top-left, bottom-right Amplifier Level Control Temperature Gain ReserveGain reserve versus ambient temperature Manual Gain ControlAmplifier Setup Automatic Drive Unit/QAM Automatic Drive Unit Return Path Alignment ADU/QADU Pads and LevelsAlignment Procedure Powering and Surge Protection Bench Testing Before You BeginMeasuring Forward Gain Test Equipment and ConnectionsTest equipment connections for bench sweeping Example Testing Return Gain and Response Completing the Test ProceduresAerial Installation InstallationCenter-conductor pin length J1 position Description Torque sequencePedestal Installation Using Amplifiers in Lower Gain Systems Using Amplifiers in Lower Frequency SystemsOperating Tips Model BLE100S SpecificationsSpecification Forward AmplifierReturn Amplifier AC CurrentADU Automatic Drive Unit Torque Fastener Screw Wrench In-lbs Torque SpecificationsSize Abbreviations and Acronyms Visit our website at 527548-001 04/06

BLE100 specifications

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