The TM481 is a mono peak program meter with 40 LED's and 55 dB display range from + 15 dB to - 40 dB.

The mono LED PPM can be used with the mono input channel TM401 and the inline input module TM402 of the ToolMod Console. A stereo version of this meter is also available. It offers the choice to add a high-resolution peak display to the input channels.

The high impedance audio input of the meter is electronically balanced. The input level is adapted to the meter sends of the ToolMod Console. An internal trim pot allows to change the default level setting of 0 dB = 6 dBu ~ + 4 dBV in a range of +/- 10 dB. The display range up to + 15 dB covers the common input and output levels of a/d and d/a converters.

The display resolution is 1 dB from + 15 dB to - 10 dB, 2 dB between - 10 dB and - 30 dB, and 2.5 dB down to the lowest level of - 40 dB. The attack time is less than 0.5 ms @ 1 kHz and the internally adjustable release time is 1.5 sec/20 dB. The release law is linearized to achieve constant speed at low levels.

The audio input is available on a 9-pin D-Sub connector on the module's pcb. The pinout of this connector matches to the pinout of the meter send connectors of the ToolMod Console frames. The power supply is daisy chained from meter to meter. The meter frames allow installation of mono and stereo meters as well as quad meter blocks and quad VU meter blocks in any combination.

The TM481 mono LED PPM is best suited for single mono and inline channels. The TM484, quad hi-res LED PPM combines 4 meters in one module. In addition, there are the stereo hi-res LED PPM TM482 and the quad, stereo, LED PPM TM488. The quad VU Meter TM485 is an alternative to the peak program meters.

The meter can be used with the mono input and inline modules of the ToolMod Console. Of course, the entire range of meters can be used for any other purpose that requires analog meters as well.