ATCOM AT800 Series Manual do Utilizador descarregar pdf (Página 12)

AutoTune™ User Guide

4.2. TX Power Out

RF Control

Port

Frequency

Modulation

Attenuation

Monitor

RF IN/OUT

Test Frequency

40 dB

Table 4-4. Analyzer Configuration for TX Power Out

4.2.1. Alignment

The TX Power Out alignment is composed of two parts: Power Characterization Points

tuning and TX Characterization tuning. Power Characterization Points tuning is

performed first, and only during alignment; it is not performed during a test.

Power Characterization Points tuning adjusts the characterization points to account for

the variability of the power detection circuitry between radios. The radio is placed into

Test Mode and commanded to transmit at the first Test Frequency. The output level is

measured and then adjusted until near to a band-specific output level defined by the

APX™ Tuner software help file.

Band

Rated Target Power

VHF

6.2 Watt

UHF

5.3 Watt

700MHz

2.65 Watt

800MHz

3.2 Watt

900MHz

TBD

Table 4-5. Motorola specified target power

This process is repeated for all test frequencies. The final results are written to the log

file.

Name

Description

Result

Pass or Fail. Meas Power within manufacturer limits

Frequency

Test Frequency

Meas Power

Measured radio output level

Target Power

Ideal Meas Power

Old Softpot

Original radio softpot setting

New Softpot

Radio softpot after alignment

Table 4-6. Power Characterization Points alignment results

Power Characterization tuning characterizes the power output level of the radio. The

radio is placed into Test Mode and commanded to transmit. Beginning at the lowest TX

Test Frequency, the output level is measured at two different points for each TX Test

Frequency. These measurements are used to calculate and program power coefficients

use to normalize the radio power output level across the radio band as specified by the

radio’s basic service manual. After the alignment is complete, the power output level is

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