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Chapter 5 133

8656B, 8657A/B/D/J Programming Codes

Command Mapping

When using the 8656B, 8657A/B/D/J-compatible programming codes, the E4428C/38C internally maps

these codes to an equivalent SCPI response. In addition, the modulation source selections for the 8656B,

8657A/B/D/J differ from those available in the E4428C/38C and therefore, are mapped to a valid selection.

(Refer to Table 5-1.)

NOTE The 8656, 8657A/B/D/J signal generators allow multiple modulations to use the same input;

the E4428C/38C does not. If you configure multiple modulations on the same input, the

E4428C/38C automatically disables the modulations.

The mapping between the 8656B, 8657A/B/D/J-compatible programming codes and the SCPI commands

changes depending on the programming codes being executed. Refer to the following sections for

explanations of the codes that are affected.

P0 (Digital Modulation Off)

NOTE This section contains a command that is only applicable to the E4438C vector signal

generator.

Table 5-1

Modulation Sources

8656B, 8657A/B/D/J ESG Signal Generators

AM, Internal AM1, Internal 1

AM, External AM2, External 1

FM, Internal FM1, Internal 1

FM, External FM2, External 1

AM, Internal and External AM1, Internal 1 and AM2, External 1

FM, Internal and External FM1, Internal 1 and FM2, External 1

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Agilent Technologies ESG Manuale Utente Pagina 141