Digitizer

Configuration

Restrictions

1.Use the CONFigure command and the low-level digitizer commands to configure the digitizers for the required measurements.

2.Use the VINStrument subsystem to reset the leftmost digitizer’s Local bus chip, to set the Local bus transfer mode to generate, and to set the data source (post measurement or real time transfer).

Use the VINStrument subsystem to reset the inner digitizer’s Local bus chip, to set the Local bus transfer mode to append or insert, and to set the data source (post measurement or real time transfer).

VINStrument:CONFigure:LBUS:RESet VINStrument:CONFigure:LBUS:MODE <mode> VINStrument:CONFigure:LBUS:FEED <source >

Note that you must reset the Local bus chip of each appender or inserter digitizer each time the generator digitizer’s Local bus mode or data source is changed.

3.Reset the consumer’s (i.e. memory card’s) Local bus chip and configure the consumer to receive data.

4.Activate (initiate) the consumer.

5.If the digitizer(s) is in the append mode, use INITiate:IMMediate to activate the appender digitizer first. Then use INITiate:IMMediate to activate the generator digitizer.

6.If the digitizer(s) is in the insert mode, use INITiate:IMMediate to activate the generator digitizer first. Then use INITiate:IMMediate to activate the inserter digitizer.

The HP E1429B digitizer can be configured for measurements as required with the following exceptions:

If the Local bus data source is the digitizer A/D (real time transfers), only post-arm readings are allowed. This includes multiple arms (bursts).

When the Local bus mode is set to a mode other than OFF or pipeline, the VME bus transfer mode must be disabled. This is done with the command:

VINStrument[:CONFigure]:VME[:MODE] OFF

Chapter 3

Understanding the HP E1429 Digitizer 161

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Image 161
HP E1429A manual Digitizer Configuration Restrictions