Home > AL19 Retro audio level analogue panel meters from Switches Plus Components

AL19 Retro audio level analogue panel meters from Switches Plus Components

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article image AL19 Retro audio level analogue panel meters

AL19 Retro Audio Level analogue panel meters available from Switches Plus Components complement the proven and popular Presentor series. The meters offer a performance not significantly different from full specification vu meters to meet the market requirements for both quality and ‘retro’ styling.

Features and Benefits:

  • Front of panel mounting with full bezel
  • The meter is constructed with transparent acrylic front and high impact rear body moulding. Bezel moulded in black ABS

Taut band core magnet movement is incorporated as a standard feature. This rugged movement makes these meters equally suitable for portable or fixed audio applications. There is no calibration effect when mounted on a ferrous panel.

Specification:

The AL19 Retro Audio Level analogue panel meter is a low range ac voltmeter offering a performance close to that of a full specification vu meter. This meter can also be used for industrial applications with electrical input and custom scales to suit.

A low range ac voltmeter suitable for connecting across a 600 ohm line and self contained except for requiring an external 3.6k ohm resistor.

The meter is calibrated for use with a 3.6k ohm resistor 4vu above the scale marking so that the reference deflection (0vu) is produced by a signal 4vu above 1 m W in 600 ohms (1.228V).

The performance of the meter is based upon the requirements of BS 6840: Part 17:1991,IEC 268 – 17 1990.

The dynamic characteristics quoted, which requires the response time to 99% of reference deflection (0vu) to be 0.3 seconds +/- 100% with an overswing of at least 1.0% but not more than 1.5% are not fully met.

The overswing, because damping is not so tightly controlled but allowed to spread within normal design restraints, can vary between deadbeat to 5%.

To specify the dynamic characteristics in terms of time to 99% of 0vu under such circumstances would give an unrepresentative, measure of the speed of response.

For this reason the time to reach –3vu with a steady reading of reference deflection (0vu) has been taken as a more realistic measure.

The following comparison can be made based on a rise time to –3vu with steady deflection of 0vu:

  • IEC: 0.13 – 0.15 Seconds
  • AL19 Retro: 0.14 - 0.18 Seconds

Pointers and dials:

The combination of ‘pear’ shaped pointer and conventional arc scale on metal buff coloured dial results in an easily read meter, even when monitoring a row on a large console.

A white dial can be specified if required. The standard scale is based on the vu ‘A’ scale but the ‘B’ scale with the ‘percent’ reading at the top can be supplied to order at no extra cost.

Zero adjuster:

  • Positioned on the rear as standard

Certified drawings:

  • Available on request

Operating temperature:

  • -25oC to +55oC

Illumination:

  • Internal LED illumination 6, 12 or 24volt

Terminals:

  • 6mm tabs or flying leads are available

Key features:

  • ‘Retro’ styling with contemporary construction
  • High performance
  • Internal LED Illumination option
  • Suitable for less than 1U vertical rack mounted applications
  • RoHS compliant

The AL19 Retro audio level analogue panel meters are available from Switches Plus Components.

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