Difference between revisions of "Panel Meter"

From TheAnalogThing
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[[File:Voltmeter.png|thumb|Illustration of the display, showing the value <code>0.314</code>]]
 
[[File:Voltmeter.png|thumb|Illustration of the display, showing the value <code>0.314</code>]]
  
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A digital '''panel meter''' is part of [[The Analog Thing]]. The display is located in the lower right on the upper board and is thus a central part of the front panel.
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The '''panel meter''' is the LCD display unit located in the lower right on the upper PCB.
  
 
== Usage ==
 
== Usage ==
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The panel meter is an instrument which is used as voltmeter (albeit with respect to the machine unit [[Machine Units]] of +10 V, so +10 V are displayed as 1.000). Depending on the mode switch [[Modes|mode setting (operation mode)]] setting, different things are displayed.
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The '''panel meter''' is used in two different modes, depending on the position of the <code>MODE SELECTOR</code> knob:
  
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* In mode COEFF the coefficients can be setup on the eight manual coefficient potentiometers. Using the COEFFICIENT switch the potentiometer to be set is selected.
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* With the <code>MODE SELECTOR</code> knob in the <code>COEFF</code>, <code>MINION</code>, <code>IC</code>, <code>OP</code> or <code>HALT</code> positions, the panel meter displays the numerical value patched into the <code>u</code> socket in the <code>OUTPUT JACKS</code> section in the unit range -1 to 1. This allows monitoring any value in a program by connecting any socket on the patch panel with the <code>u</code> socket. In particular, it allows setting the values of coefficient potentiometers by connecting any potentiometer's output to the <code>u</code> socket and turning the respective potentiometer knob until the panel meter displays the desired value.
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* In mode REP or REPF the current OP TIME value is shown. It can be changed using the OP-TIME potentiometer. In all other positions except OFF the voltmeter shows the value present at the jack U on the front panel.
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* With the <code>MODE SELECTOR</code> knob in the <code>REP</code> or <code>REPF</code> positions, the current <code>OP TIME</code> value is shown. It can be changed using the OP-TIME potentiometer. In <code>REP</code> (repeat) mode, <code>OP TIME</code> values are shown in the 0 to 10 second range. In <code>REPF</code> (repeat fast) mode, <code>OP TIME</code> values are shown in the 0 to 100 millisecond range.
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== Technical details ==
 
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* This digital readout display is a <code>PM438</code> [https://www.ett-online.de/Werkstatt/Messwerkzeug/Sonstige-Messgeraete/Panel-Meter-PM-438-digital-mit-3-5-stellige-LC-Anzeige.html][https://www.jameco.com/Jameco/Products/ProdDS/108388.pdf].
 
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* The instrument indicates negative values with a preceding minus sign.
 
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* A leading zero left to the decimal point is automatically suppressed.
 
  
 
[[Category:Components of The Analog Thing]]
 
[[Category:Components of The Analog Thing]]

Revision as of 05:53, 30 August 2021

Illustration of the display, showing the value 0.314

The panel meter is the LCD display unit located in the lower right on the upper PCB.

Usage

The panel meter is used in two different modes, depending on the position of the MODE SELECTOR knob:

  • With the MODE SELECTOR knob in the COEFF, MINION, IC, OP or HALT positions, the panel meter displays the numerical value patched into the u socket in the OUTPUT JACKS section in the unit range -1 to 1. This allows monitoring any value in a program by connecting any socket on the patch panel with the u socket. In particular, it allows setting the values of coefficient potentiometers by connecting any potentiometer's output to the u socket and turning the respective potentiometer knob until the panel meter displays the desired value.
  • With the MODE SELECTOR knob in the REP or REPF positions, the current OP TIME value is shown. It can be changed using the OP-TIME potentiometer. In REP (repeat) mode, OP TIME values are shown in the 0 to 10 second range. In REPF (repeat fast) mode, OP TIME values are shown in the 0 to 100 millisecond range.
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