User's Manual

TB8100 Calibration Kit User’s Manual Adjusting the Receiver Lock Band 15
Adjusting the Frequency Setup
Before the TB8100 base station is installed, connected, and configured, you
must prepare it for operation by adjusting the switching range of the reciter, and
flattening the receiver response across the base station’s switching range.
Note: If the required switching range for the base station has already
been defined, you don’t need to perform these procedures.
To prepare the base station for operation
1. Adjust the receiver lock band (optional)
2. Tune the receiver
3. Adjust the exciter lock band (optional)
Tip: Use the TB8100 Service Kit software to monitor the base
station and find out its current switching range.
Adjusting the Receiver Lock Band
The first step in preparing the TB8100 base station for operation is to adjust the
receiver lock band (switching range). The lock band is the range of frequencies
that the base station receiver or transmitter is calibrated to operate on.
Equipment ■ Tuning tool
■ Calibration test unit (CTU)
To adjust the receiver lock band
1. Ensure you are already connected to the reciter.
2. Select the Frequency Setup tab, and double-click Set Receiver VCO. The
Set Receiver VCO Wizard appears.
3. Enter the Center Frequency (which must be a multiple of 500 kHz) of the
lock band that you want to use, and click Next.
4. Insert the tuning tool into the receiver VCO tuning hole and then click
Next.
5. Adjust the receiver VCO trimmer to center the receiver VCO on the
frequency you want, and then click Finish.
The lock band is now stored in the reciter, and the icon on the Frequency
Setup tab indicates that this task is complete. You will now need to tune the
receiver front end.