HP E1432A User's Guide

Module Description

Calibration Description

The Cal connector on the front panel of the standard HP E1432A can be configured (in software) as either an input or an output. It can be set to any of four settings:

￿DC - The HP E1432A outputs a DC calibration signal from the millivolt range up to 15 volts.

￿AC - The HP E1432A outputs a signal from an Arbitrary Source option (in the same module or a different HP E1432A 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 E1432A 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 E1432A 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 5-12: Calibration block diagram

5-15

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Image 119
HP VXI E1432A manual Calibration Description, Input circuitry