ATCOM AT800 Series Bedienungsanleitung PDF herunterladen (Seite 25)

AutoTune™ User Guide

6.1. Reference Frequency

RF Control

Port

Frequency

Modulation

Attenuation

Monitor

RF IN/OUT

Test Frequency

20 dB

Table 6-1. Analyzer Configuration for Reference Frequency

6.1.1. Alignment

The radio is placed into Test Mode at the highest TX Test Frequency and commanded

to transmit. Using a best linear fit algorithm, two frequency error measurements are

taken at two different radio softpot values. These frequency error measurements are

used to calculate the softpot value which minimizes frequency error. After programming

this new softpot value into the radio, the radio softpot is fine tuned until minimum

frequency error is detected. The frequency error is compared against test limits and the

final results written to the log file.

Dual-Band: This alignment is only performed at a single test frequency. The test

frequency is the highest test frequency for the highest frequency band.

Name

Description

Result

Pass or Fail. Frequency Error within Max Limit, Min Limit

Frequency

Test Frequency

Freq Error

Measured frequency error after alignment

Min Limit

Minimum Limit (inclusive) for frequency error

Max Limit

Maximum Limit (inclusive) for frequency error

Old Softpot

Original radio softpot setting

New Softpot

Radio softpot after alignment

Table 6-2. Reference Frequency alignment results

6.1.2. Test

The radio is placed into Test Mode at the highest TX Test Frequency and commanded

to transmit. The frequency error is measured by the analyzer and compared to test

limits. The final results are written to the log file.

Dual-Band: This test is only performed at a single test frequency. The test frequency

is the highest test frequency for the highest frequency band.

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