NAME

Lab::Instrument::HP34411A - HP/Agilent 34410A or 34411A digital multimeter

SYNOPSIS

use Lab::Instrument::HP34411A;

my $hp=new Lab::Instrument::HP34411A(0,22);
print $hp->read_voltage_dc(10,0.00001);

DESCRIPTION

The Lab::Instrument::HP34411A class implements an interface to the 34410A and 34411A digital multimeters by Agilent (formerly HP). Note that the module Lab::Instrument::HP34401A still works for those newer multimeter models.

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.

read_resistance

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

Preset and measure resistance with specified range and resolution.

config_voltage

$hp->config_voltage($inttime,$range,$count);

Configures device for measurement with specified integration time, voltage range and number of data points (up to 1 million). Afterwards, data can be taken by triggering the multimeter, resulting in faster measurements than using read_voltage_dc, especially when using $count >> 1.

config_voltage_plc

$hp->config_voltage_plc($plc,$range,$count);

Same as config_voltage, but here the number of power line cycles ($plc) is given instead of an integration time.

read_with_trigger_voltage_dc

@array = $hp->read_with_trigger_voltage_dc()

Take data points as configured with config_voltage(). Returns an array.

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: HP34411A.pm 613 2010-04-14 20:40:41Z schroeer $

Copyright 2004-2006 Daniel Schröer (http://www.danielschroeer.de), 2009-2010 Daniela Taubert

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

cpanm Lab::Instrument

perl -MCPAN -e shell
install Lab::Instrument