Tait TB8100 User Manual

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Tait TB8100 User Manual Manual pdf 17 page image

TB8100 Calibration Kit User’s Manual Adjusting the Exciter Lock Band 15Note: When using the Fine (slow) setting, you may notice a slightdelay as the reading from tuning the front-end helical filters takesapproximately one second to appear on the graph.6. Click Finish.Once you have finished tuning the receiver, the icon on the FrequencySetup tab indicates that this task is complete.Adjusting the Exciter Lock BandIf you are preparing the base station for operation, adjusting the exciter lockband is the third step in tuning the reciter. Otherwise, this procedure can beperformed independently of the other two calibration wizards on theFrequency Setup tab. Adjusting the exciter lock band defines the range offrequencies that the base station is able to transmit on.Note: When performing this procedure, you don’t need toterminate the exciter output port. An internal output pad means thatthere is a good impedance match at this interface.Equipment Tuning tool Calibration test unit (CTU)To calibrate the exciter lock band1. Ensure you are already connected to the reciter.2. Select the Frequency Setup tab, and double-click Set Exciter VCO. TheSet Exciter VCO Wizard appears.3. Enter the center frequency (which must be a multiple of 500 kHz) of thelock band that you want to use, and click Next.4. Insert the tuning tool into the exciter VCO tuning hole and adjust thetrimmer to roughly center the exciter VCO on the band you want. ClickFinish.Once you have finished adjusting the exciter lock band, the icon on theFrequency Setup tab indicates that this task is complete.