Daniel Schröer > Lab-Instrument-1.2 > Lab::Instrument::HP34401A

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Module Version: 0.0000   Source   Latest Release: Lab-Instrument-2.01

NAME ^

Lab::Instrument::HP34401A - HP/Agilent 34401A digital multimeter

SYNOPSIS ^

    use Lab::Instrument::HP34401A;
    
    my $hp=new Lab::Instrument::HP34401A(0,22);
    print $hp->read_voltage_dc(10,0.00001);

DESCRIPTION ^

The Lab::Instrument::HP34401A class implements an interface to the 34401A digital multimeter by Agilent (formerly HP).

CONSTRUCTOR ^

    my $hp=new(\%options);

METHODS ^

read_voltage_dc

    $datum=$hp->read_voltage_dc($range,$resolution);

Preset and make a dc voltage measurement with the specified range and resolution.

$range

Range is given in terms of volts and can be [0.1|1|10|100|1000|MIN|MAX|DEF]. DEF is default.

$resolution

Resolution is given in terms of $range or [MIN|MAX|DEF]. $resolution=0.0001 means 4 1/2 digits for example. The best resolution is 100nV: $range=0.1; $resolution=0.000001.

read_voltage_ac

    $datum=$hp->read_voltage_ac($range,$resolution);

Preset and make an ac voltage measurement with the specified range and resolution. For ac measurements, resolution is actually fixed at 6½ digits. The resolution parameter only affects the front-panel display.

read_current_dc

    $datum=$hp->read_current_dc($range,$resolution);

Preset and make a dc current measurement with the specified range and resolution.

read_current_ac

    $datum=$hp->read_current_ac($range,$resolution);

Preset and make an ac current measurement with the specified range and resolution. For ac measurements, resolution is actually fixed at 6½ digits. The resolution parameter only affects the front-panel display.

display_on

    $hp->display_on();

Turn the front-panel display on.

display_off

    $hp->display_off();

Turn the front-panel display off.

display_text

    $hp->display_text($text);
    print $hp->display_text();

Display a message on the front panel. The multimeter will display up to 12 characters in a message; any additional characters are truncated. Without parameter the displayed message is returned.

display_clear

    $hp->display_clear();

Clear the message displayed on the front panel.

scroll_message

    $hp->scroll_message($message);

Scrolls the message $message on the display of the HP.

beep

    $hp->beep();

Issue a single beep immediately.

get_error

    ($err_num,$err_msg)=$hp->get_error();

Query the multimeter's error queue. Up to 20 errors can be stored in the queue. Errors are retrieved in first-in-first out (FIFO) order.

reset

    $hp->reset();

Reset the multimeter to its power-on configuration.

id

    $id=$hp->id();

Returns the instruments ID string.

CAVEATS/BUGS ^

probably many

SEE ALSO ^

Lab::Instrument

AUTHOR/COPYRIGHT ^

This is $Id: HP34401A.pm 529 2006-10-07 20:31:17Z schroeer $

Copyright 2004-2006 Daniel Schröer (http://www.danielschroeer.de)

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

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