Sec 2: 6-10 Radio Alignment Procedures: Transmitter Alignments
6.5.3 Power Characterization Tuning
Tuning of the radio is done through Power Characterization tuning screen.
IMPORTANT: Power Characterization Tuning Points must be tuned before tuning
Power Characterization Tuning.
NOTE: a.The longer the RF cable, the more the attenuation of the power reading.
b.Use a standard 50 ohm cable
c.Remember to set the Communication Analyzer to baseband power.
1. Select the TX Power Characterization alignment screen. The screen indicates the transmit
power to be used. See Figure 6-13, Figure 6-14, Figure 6-15, Figure 6-16 and Figure 6-17.
2. Left-click the box under “Measure Power 1” for the desired frequency field. (The selected box
is highlighted).
3. Click the PTT Toggle button on the screen to make the radio transmit. The screen indicates
whether the radio is transmitting.
4. Measure the transmit power of the radio with a service monitor.
5. Input the transmit power in watts using two decimal places into the highlighted “Measure
Power 1” box.
6. Left-click the box under “Measure Power 2” box for the same frequency field. (The selected
box is highlighted).
7. Measure the transmit power of the radio with a service monitor.
8. Input the transmit power in watts using two decimal places into the highlighted “Measure
Power 2” box.
9. Repeat steps 2 to 8 for all frequencies.
10. Left-click the Program All button on the screen to dekey the radio and save the tuned values.
Figure 6-13. Transmit Power Characterization Alignment Screen (VHF and 700–800 MHz)
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