Agilent Technologies ESG Specifikace stáhnout pdf (Strana 232)

4-24 Fully Coded 3GPP W-CDMA Personality User’s and Programming Guide

Operation ESG Family Signal Generators

Understanding Relative Power Mapping Option 200

Understanding Relative Power Mapping

The Option 200 3GPP two-ESG downlink system configuration requires power

adjustments for each active channel, in order to achieve the required 3GPP code domain

power output.

Once the test system has been properly connected and configured, a relative power

mapping procedure must be performed after entering channel power values into the signal

generators. ESG 1 and ESG 2 cannot communicate channel power level information

between the two signal generators. The relative power mapping procedure solves this

problem. This procedure ensures that the channel power levels generated on ESG 1 are

aligned with the channel power levels produced by ESG 2 to achieve the required 3GPP

code domain power levels.

By making adjustments to percent power paired and total voltage paired, the power output

of the second baseband generator is matched to the first, resulting in a 0 dB overall system

code domain output power value.

The OCNS channel generates orthogonal noise in the code domain. If specific downlink

channel power levels are required, adding and/or adjusting the power level of the

orthogonal channel noise simulator is an easy way to add fill-in power while keeping the

original channel power values intact.

Voltage Other ESG values and % Power Other ESG values must be input to ESG 1 and

ESG 2 via the front panel user interface or by executing SCPI commands via remote

interface. See “Adjust the Relative Power Mapping” on page 2-14.

NOTE To ensure accuracy, the relative power mapping procedure must be repeated

every time a channel power level setting is modified on either ESG.

1 2 ... 227 228 229 230 231 232 233 234 235 236 237 ... 301 302

Žádné komentáře

Agilent Technologies ESG Specifikace Strana 232