Example: A 2-channel Stereo PPM with analog DIN scale

Move the mouse accross the display elements to get the corresponding descriptions.
 

The PPM or Program Meter provides vertical or horizontal peak level bargraph displays for the individual channels of the active signal source. Using the Program Meter, please ensure that the levels and loudness values of the individual channels correspond to the requirements defined for the audio program measured.

The signal levels for each channel, displayed in yellow, can be presented as Quasi-Peakmeter (PPM), using one of the common scales such as DIN, British or Nordic, or with the newly developed True Peak scale conforming to the most recent standards. True Peak measurements have been introduced to make sure that high-level audio signals cannot produce unwanted artifacts even when processing them in a codec for data reduction, in a sample rate converter or a D/A converter. For codec processing, the EBU R128 recommends a maximum level of -3 dBTP. For all other applications, it recommends a maximum level of -1 dBTP.

The example shows different audio groups:
The left group runs in Multichannel mode, the other two groups in 5.1 (yellow marker) and Stereo formats (green marker).

Move the mouse accross the display elements to get the corresponding descriptions.
 

The Gain Reduction displays external gain reduction data, for example the compressor activity of a mixing desk channel, that can be fed to the TouchMonitor via its Network interface and TCP/IP. Suitable gain reduction data can be streamed by dynamic processors used in audio equipment that was prepared for this task.

Before using the Gain Reduction instrument, different parameters in the menu must be configured in order to establish communication between external equipment sending Gain Reduction Metering data and the TouchMonitor. Also a threshold value marker can be defined to divide the GR scale into e. g. operation range and tolerance range sections with different colors.

Only one Gain Reduction instrument can be used in each audio group. In any audio group (except "Multichannel"), this Gain Reduction instrument will have only one GR bargraph.
However, in an audio group set to "Multichannel" mode, the number of bargraphs shown in the GR instrument will reflect the channel width of this multichannel audio group.

Please note:
In order to use more than one Gain Reduction instrument (= more than one audio group) or to use Surround formats for a preset, the Multichannel licence (SW20001) must be installed in your TouchMonitor unit.

Move the mouse accross the display elements to get the corresponding descriptions.
 

This example shows a Global Keyboard placed on the screen displaying four function keys for the global control of several loudness instruments and one key to switch to another preset. Functions of other instruments can also be assigned to the keys. Additionally, the assigned instrument functions can be controlled via GPIO interface. A step-by-step instruction can be found in the Global Keyboard Help menu resp. in the detailed Operating Manual (for example provided in the Manuals section of the TM9 download page).

Preset selection is normally done using the Load Preset key on the control bar and selecting the preset from the menu.

With the appropriate assignment to one or more keys on the Global Keyboard, you can switch directly to specific presets.For example, users who should not have access to the menu can still switch to other presets. For the setting steps, refer to the ""Preset Control via GPIO" instructions, available from the "Tutorials" section of the TM9 download page.