HP 8-Channel 196 kSa/sec Digitizer plus DSP E1433A manual Calibration Description, Input circuitry

HP E1433A User's Guide

Module Description

Calibration Description

The Cal connector on the front panel of the standard HP E1433A can be configured (in software) as either an input or an output. It can be set to any of four settings:

￿DC - The HP E1433A outputs a DC calibration signal from the millivolt range up to 15 volts.

￿AC - The HP E1433A outputs a signal from an Arbitrary Source option (in the same module or a different HP E1433A module in the system.)

￿Ground - The connector is shunted to ground for a zero-volt reference.

￿Open Circuit - In this mode the connector becomes an input which can receive a calibration signal up to +/-15 volts.

The HP E1433A is calibrated at the factory and the calibration placed in EPROM memory for use at each power-up. In addition an auto-zero function is provided.

HP E1433A Substrate	Front panel connector
	Input circuitry
DC Voltage	to ADC
Reference	from
CALIN	DC_BUS
	Source
	from
CALOUT	Output
VXI SUMBUS	Tachometer
	trigger
	monitor

Figure 5-11: Calibration block diagram

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