TB9100 Calibration Software User’s Manual Calibrating the Reciter 17
Calibrating the VCO
This is step three of calibrating the exciter.
Once you have tuned and calibrated the FCL, you calibrate the VCO at
frequencies across the whole lock band. This involves selecting a sub-band,
adjusting the lock band trimmer, and then moving on-screen sliders to adjust
the deviation to 3 kHz for each of a set of frequencies.
Equipment ■ Murata tuning tool
■ Modulation meter
■ RF attenuator (only required if you are using a PA)
Setup
To calibrate the VCO
1. Make sure that the equipment is set up and that the Calibration Software is
connected to the reciter.
2. Select the Reciter Calibration tab, and double-click VCO Calibration.
The VCO Calibration Wizard appears.
3. In the drop-down list, select the test set model you will use for the
calibration.
4. Set the modulation meter according to the instructions in the wizard, and
then click Next. (If you are using a PA, it will now transmit.)
5. Adjust the exciter lock band trimmer until the actual band matches the
desired band. The bands turn green.
6. Click Next. Step 3 of the wizard appears.
Exciter VCO tuning hole
for H band
(380–520 MHz)
Exciter VCO tuning hole for
B band (136–174 MHz)
Exciter VCO tuning hole for
K band (850-869 MHz)
Exciter VCO tuning hole for
K band (762-776 MHz)
1 Reciter 3 RF attenuator (only required if using a PA)
2 PA (optional) 4 Modulation meter
1
2
3
4
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