User's Manual

TB8100 Calibration Kit User’s Manual Adjusting the Receiver Lock Band 9
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
2. Tune the receiver front end
3. Adjust the exciter lock band
Tip: Use the TB8100 Service Kit to monitor the base station and
find out its current switching range.
Important: Be careful when using the tuning tool. Attempting to
turn the tool beyond the end of the range can crack the tuning slug.
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 receiver is calibrated to operate on.
Equipment ■ Tuning tool
■ CTU
To adjust the receiver lock band
1. Remove the reciter from the subrack. (For instructions, see the Installation
and Operation Manual.)
2. Connect the Calibration Kit to the reciter (see “Connecting to a Reciter
Outside the Subrack” on page 5).
3. Select the Frequency Setup tab, and double-click Set Receiver VCO. The
Set Receiver VCO Wizard appears. The display varies, depending on the
reciter band.
4. Enter the Center Frequency (which must be a multiple of 500 kHz) of the
lock band that you want to use, and click Next.
5. Insert the tuning tool into the correct receiver VCO tuning hole for the
reciter type and then click Next.
UHF receiver VCO
tuning hole
VHF receiver VCO
tuning hole