Agilent Technologies E4438C Instalační příručka stáhnout pdf (Strana 76)

Performance Tests

Internal Digital Modulation Quality (Option 402 Only)

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Internal Digital Modulation Quality

(Option 402 Only)

NOTE This test is only required for instruments with Option 402.

This automated test verifies the RF modulation quality of the signal generator’s internal I/Q modulation. A

vector signal analyzer is connected to the signal generator’s RF output. The internal baseband generator

modulates the RF carrier in each of the available digital modulation formats. The vector signal analyzer

measures the appropriate error parameter for the modulation generated (EVM for PHS, PDC, EDGE,

and NADC formats; global phase error for GSM format).

Recommended Equipment

• Agilent 89441A vector signal analyzer with Options AYA, AYH, AY7, AY9, B7A, UFG or UTH

Equipment Setup

Figure 3-25 Internal Digital Modulation Quality

(Option 402 Only) Setup

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Agilent Technologies E4438C Instalační příručka Strana 76