Figure 6-14. Rx Front-End Filter Alignment Screen - Motorola ASTRO XTL 5000 Basic Service Manual

Radio Alignment Procedures: Transmitter Alignments
2. To find the RSSI Peak:
a. Start with a softpot value of at least 10, and adjust the softpot value either by clicking the
up arrow and incrementing the New Softpot Value spin box or by directly entering the
desired value into the New Softpot Value spin box.
b. Increase the softpot value and note the radio RSSI values until the Radio RSSI value =
Peak. The RSSI will reach a peak value, remain stable, and then start decreasing.
c. Record the softpot value.
3. To find the lowest softpot value in the peak range:
a. Lower the softpot value until the Radio RSSI value = RSSI Peak -2. For example, if the
peak RSSI value = 83, then 83-2=81.
b. Record the softpot value.
4. To find the highest softpot value in the peak range:
a. Increase the softpot value and continue past the RSSI peak until the Radio RSSI value =
RSSI Peak -2.
b. Record the softpot value. If this point (RSSI value = peak -2) cannot be found, use the
highest softpot value as the value for this step.
5. Calculate the middle of the lowest and highest softpot values defined above, and then enter
this value in the New Softpot Value spin box and click the Program All box.
6871769L01-A

Figure 6-14. Rx Front-End Filter Alignment Screen

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October 30, 2006