/ 
Lab-Measurement-3.640
River stage zero No dependents
/ Lab::Moose::Instrument::SpectrumAnalyzer

NAME

Lab::Moose::Instrument::SpectrumAnalyzer - Role of Generic Spectrum Analyzer for Lab::Moose::Instrument

VERSION

version 3.640

DESCRIPTION

Basic commands to make functional basic spectrum analyzer

NAME

Lab::Moose::Instrument::SpectrumAnalyzer - Role of Generic Spectrum Analyzer

Hardware capabilities and presets attributes

Not all devices implemented full set of SCPI commands. With following we can mark what is available

capable_to_query_number_of_X_points_in_hardware

Can hardware report the number of points in a sweep. I.e. can it respont to analog of [:SENSe]:SWEep:POINts? command.

Default is 1, i.e true.

capable_to_set_number_of_X_points_in_hardware

Can hardware set the number of points in a sweep. I.e. can it respont to analog of [:SENSe]:SWEep:POINts command.

Default is 1, i.e true.

hardwired_number_of_X_points

Some hardware has fixed/unchangeable number of points in the sweep. So we can set it here to simplify the logic of some commands.

This is not set by default. Use has_hardwired_number_of_X_points to check for its availability.

METHODS

Driver assuming this role must implements the following high-level method:

get_traceXY

$data = $sa->traceXY(timeout => 10, trace => 2);

Perform a single sweep and return the resulting spectrum as a 2D PDL:

[
 [freq1,  freq2,  freq3,  ...,  freqN],
 [power1, power2, power3, ..., powerN],
]

I.e. the first dimension runs over the sweep points.

This method accepts a hash with the following options:

timeout

timeout for the sweep operation. If this is not given, use the connection's default timeout.

trace

number of the trace (1..3). Defaults to 1.

get_StartX and get_StopX

Returns start and stop frequency

get_traceY

$data = $inst->get_traceY(timeout => 1, trace => 2, precision => 'single');

Return Y points of a given trace in a 1D PDL:

This implementation is SCPI friendly.

timeout

timeout for the sweep operation. If this is not given, use the connection's default timeout.

trace

number of the trace 1, 2, 3 and so on. Defaults to 1. It is hardware depended and validated by validate_trace_papam, which need to be implemented by a specific instrument driver.

precision

floating point type. Has to be 'single' or 'double'. Defaults to 'single'.

Required hardware dependent methods

validate_trace_param

Validates or applies hardware friendly aliases to trace parameter. Need to be implemented by the instrument driver. For example

sub validate_trace_param {
  my ( $self, $trace ) = @_;
  if ( $trace < 1 || $trace > 3 ) {
    confess "trace has to be in (1..3)";
  }
  return $trace;
}

Use like this

$trace = $self->validate_trace_param( $trace );

COPYRIGHT AND LICENSE

This software is copyright (c) 2018 by the Lab::Measurement team; in detail:

Copyright 2018       Eugeniy E. Mikhailov

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.