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84 Chapter 3

Basic Digital Operation

Local Settings for ARB Waveform Formats and the Dual ARB Player

Local Settings for ARB Waveform Formats and the Dual

ARB Player

To provide you with the greatest convenience in optimizing and replicating waveforms for

play-back in the dual ARB player, settings that were previously (pre-C.03.10 firmware

release) found in only the dual ARB player have now been incorporated into each of the ARB

modulation formats. In addition, some of the I/Q waveform settings previously found in the

I/Q and MUX hardkey menus are also present in the ARB modulation formats and the dual

ARB player. These settings are shown in the following list, and explained in the sections that

follow:

• I/Q output filter

• I/Q modulator filter

• I/Q modulator attenuator

• ARB sample clock

•Markers

I/Q Attenuator and Filters Settings

The I/Q output filter, modulator attenuator, and the I/Q modulator filter are now set locally

within each ARB modulation format (W-CDMA, CDMA2000, AWGN, Multitone, etc.) and the

dual ARB player. When you set these signal generator parameters within one modulation

format, they will not apply to the others. These settings are applied to the signal generator

when the modulation format is turned on or the saved waveform is selected in the dual ARB

player. They can also be saved to the header file. The I/Q output attenuator (

I/Q Output Atten

softkey located in the

I/Q and Mux hardkey menus) still maintains its original behavior in that

it is a global setting (applies to all signal generator formats).

Front Panel Changes

In pre-C.03.10 firmware releases, these three parameters were set globally from the

I/Q and/or

the

Mux hardkey menus using the Modulator Atten nnn dB Manual Auto, I/Q Output Filter Manual

Auto

, and I/Q Mod Filter Manual Auto softkeys. Now these three softkeys also appear in each of

the ARB formats and the dual ARB player. This enables you to set these parameters locally

within each ARB format and the dual ARB player. The three softkeys in the I/Q and mux

menus now apply only to the real-time formats and externally applied I/Q signals. The

real-time formats are the ones preceded with real-time on the ESG softkey labels and usually

have BBG as one of the SCPI command mnemonics. When an ARB format or the dual ARB

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