Motorola BLE100 operation manual Testing Return Gain and Response, Completing the Test Procedures

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4-4

Bench Testing

Testing Return Gain and Response

After configuring the return path, you can test the return bandpass to ensure compliance with specifications. When testing the return amplifier, remember that it is a flat amplifier. Therefore, the cable simulator must remain in the test set-up and must remain set to the same cable equivalent as in the forward sweep test. This provides an approximate indication of the frequency response, which you can achieve in the field.

To test for return gain and response:

1Reconnect the test equipment and switch the sweep input and sweep output leads of the BLE100 under test to be opposite of the connection shown in Figure 4-1.

2Remove the power block at the input port and replace the 20 A fuse at the output port (both illustrated in Figure 2-8) before you apply power.

3Re-adjust the test equipment to sweep from 4 MHz through the maximum return band frequency plus 10 MHz (Example — 50 MHz for S-split).

The expected response is flat. Any tilt, which is due to the return equalizer, must average out to a flat response in a cascade of amplifiers. A slope adjustment is not available in the return bandpass.

4Measure the gain at the maximum return band frequency (40 MHz for S-split).

The amplifier gain is the sum of: the measured gain, the insertion loss of the return cable equalizer at the maximum return band frequency, the insertion loss of the power combiner, any pads installed in either the input or output pad locations, plus the cable simulator loss at the maximum return band frequency. The measured gain must meet advertised specifications for the return amplifier.

Example:

14.0dB (measured gain)

+1.0 dB (equalizer insertion loss)

+1.1 dB (power combiner)

+0.0 dB (pads)

+4.6 dB (cable simulator at 40 MHz)

+20.7 dB (unit gain)

Completing the Test Procedures

The amplifier is now approximately tailored for a specific field location. Additional adjustments after installation are minor in nature. Re-install the fuse or power-block removed during testing.

Complete station records by recording pertinent information. Remove test-equipment connections and close the housing following instructions provided in Section 5, “Installation,” Closing the Housing.

BLE100 Installation and Operation Manual

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Contents Installation BLE100 Special Symbols That Might Appear on the Equipment Page Contents Operating Tips Bench TestingInstallation SpecificationsTorque Specifications Abbreviations and Acronyms TablesAppendix B BLE100 closed IntroductionBLE BLE100 openUsing This Manual Related DocumentationDocument Conventions Motorola Online http//businessonline.motorola.com If You Need HelpCalling for Repairs BLE100 base with electronics module OverviewBLE100 ordering matrix Ordering MatrixBLE-HSG/15 housing and dimensions HousingGaskets Housing gasketsPort Locations Housing portsBLE100 power supply Power SupplyBLE100 block diagram Forward PathReturn Path Model Description Function Ingress Control SwitchOptions and Accessories BLE100 options and accessoriesSFE-100 SRESCS RCB JXP Field Practice Amplifier SetupProper Handling Procedures Bench SetupBefore You Begin Forward Path AlignmentExample Starline Cable EqualizersSlope SFE-100 Starline Forward Equalizers SFE-100Equalizer slope versus cable Starline Cable Simulators Frequency Cable slope in dBStarline Cable Simulators Input and Midstage Pads Flatness ControlFrequency versus cable slope Directional Coupler Test Points Bode EqualizationLDR/9/1G component layout top-left, bottom-right Manual Gain Control Temperature Gain ReserveGain reserve versus ambient temperature Amplifier Level ControlAmplifier Setup Automatic Drive Unit/QAM Automatic Drive Unit ADU/QADU Pads and Levels Return Path AlignmentAlignment Procedure Powering and Surge Protection Before You Begin Bench TestingTest Equipment and Connections Measuring Forward GainTest equipment connections for bench sweeping Example Completing the Test Procedures Testing Return Gain and ResponseInstallation Aerial InstallationCenter-conductor pin length Torque sequence J1 position DescriptionPedestal Installation Using Amplifiers in Lower Frequency Systems Using Amplifiers in Lower Gain SystemsOperating Tips Forward Amplifier SpecificationsSpecification Model BLE100SAC Current Return AmplifierADU Automatic Drive Unit Torque Specifications Torque Fastener Screw Wrench In-lbsSize Abbreviations and Acronyms Visit our website at 527548-001 04/06

BLE100 specifications

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The device supports various protocols and adheres to international standards, which ensures versatility and compatibility in multiple applications. Whether it's intelligent home systems seeking efficient device interaction or logistics needing simple asset tracking solutions, the Motorola BLE100 meets diverse needs.

In conclusion, the Motorola BLE100 is a powerful device that marries efficiency, functionality, and security. Its low power usage, reliable connectivity, user-friendly design, and robust features make it a top choice for anyone looking to enhance their Bluetooth Low Energy applications. With the BLE100, users can explore a wide range of possibilities, from smart technology integration to simplified monitoring solutions, all designed to optimize performance while maintaining a user-centric approach.
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