RF-Link Technology NL6000 manual Appendix a Diagnosing and Correcting Performance Problems

Page 45

Appendix A – Diagnosing and Correcting Performance Problems

Factory technicians use the procedures in this section for initial modem alignment. After installation, a qualified electronic technician can use these procedures to diagnose and correct performance problems. Only an electronic technician with training in RF radio alignment should perform these procedures.

Always perform these procedures using calibrated test equipment. Use the following test equipment for these procedures:

∙A calibrated service monitor (IFR) capable of generating and analyzing narrow- band FM signals in the frequency band of the radio being tested.

∙DC power supply capable of supplying at least 1 amp of current at 10-12V DC.

∙A computer terminal capable of 9600 Baud wired as a DTE.

∙A cable to connect the modem antenna output to the connector on the IFR.

Setting the Power Value

1.Set the IFR to receive at the radios transmit frequency.

2.From the terminal emulator, enter programming mode.

3.Select the active channel for the radio as follows:

∙Select Radio ä Select Active Channel.

∙Enter the active channel assignment for the radio. The value must be a number in the range 01 64.

∙Press ESC to return to the Main Menu.

4.Select Diagnostics ä Transmit Continuous Random Data.

5.Set the power value as follows:

∙Select Power from the Diagnostics menu.

∙While watching the power gauge, change the power value and check the gauge to see that the power value registers correctly. The value must be a number in the range 0 1023.

6.Select None from the Diagnostics menu to stop the data transmission.

Setting the Frequency Trim (includes setting Power)

The power setting affects the frequency trim in the NL6000, so part of setting the frequency trim is setting the power.

1.Set the IFR to receive at the radios transmit frequency.

2.From the terminal emulator, enter programming mode.

3.Select the active channel for the radio as follows:

∙ Select Radio ä Select Active Channel.

RF Neulink

45

NL6000 User Guide

Image 45

Contents NL6000 Wireless Modem Copyright Table of Contents RF Neulink NL6000 User Guide RF Neulink NL6000 User Guide Product Overview Use the NL6000 in a Simple ConfigurationFeatures Single and Multi- Point Addressing Configuration TemplatesAcknowledgement Auto-TransmitRegulatory Information Safety WarningFCC Part 406.0 to 406.1 MHz OperationGeneral Specifications SpecificationsCurrent Drain at 12 UHF Radio SpecificationsTransmitter ReceiverVHF Radio Specifications Power Connections Hardware Installation and OperationParts Description Serial PortDCE DTELEDs Antenna ConnectionOperation LEDTechnical Support Software ConfigurationPrerequisites PreparationSource and Destination Addressing Unique Data Requirements for a Base StationAddressing with Wildcards Behavior of Repeater UnitsRepeat from a Base to a Remote Repeat to Multiple Remotes using Wildcard Packet Data Options Transmission ModeFEC CRCRF Neulink NL6000 User Guide Acknowledgements Over-the-Air Data RatesDCD Mode Carrier Sense Multiple AccessSerial Connection to an I/O Device Basic Serial ParametersFactory Default Parameters Planning the RF ChannelPre- and Post-Data DCD Time Select Network ä Unit Type ProceduresGeneral Procedures Returning to the Previous Menu Displaying the Configuration Summary WindowSetting the Unit Type Select Network ä Unit Type Radio Network SetupSetting the Unit ID Myid Select Network ä Myid Setting the Target Unit ID ToidSerial Connection Setup Setting the Packet Mode Select Network ä Packet Mode Data SetupSetting the Request ACKs Option Setting the Data Rate Select Network ä Data RateSetting the Contention Option Select Network ä Contention Setting the Max Retries OptionTrigger ID Value Use Repeater SetupFile Management Downloading a Software UpgradeSelect Save/Restore Parameters ä Save Parameters to Disk Saving Parameters to DiskRestoring Parameters from Disk Restoring Default Parameters Main Menu Summary Window Menu Quick ReferenceSerial Menu DCD RS-232 SubMenu Network Menu Repeater SubMenu Radio Menu Diagnostics Menu Save/Restore Parameters Menu Troubleshooting Other ConsiderationsDuty Cycle Unit Does Not Enter Programming Mode Use a Fully-Wired RS-232 CableUse a Slower Baud Rate Use a Faster Baud RateSetting the Frequency Trim includes setting Power Appendix a Diagnosing and Correcting Performance ProblemsSetting the Power Value Select Diagnostics ä Transmit Continuous Random Data∙ Select Frequency Trim from the Diagnostics menu Setting the Deviation and BalanceSelect Diagnostics ä Transmit 100 Hz Square Wave ∙ Select Radio Ä Transmit Frequency for Active Channel∙ Select Deviation from the Diagnostics menu Setting the Receive Gain∙ Select Diagnostics ä Receive Diagnostic Mode ∙ Select Diagnostics ä Receive GainAppendix B Factory Default Parameters Category Parameter Default Value Custom ValueFactory Default Values Index RF Neulink NL6000 User Guide