The high impedance audio inputs of the meter are 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 inputs are available on four 9-pin D-Sub connectors on the module's pcb. The pinout of these connectors match to the pinout of the meter send connectors of the ToolMod Console frames. The power supply is daisy chained from meter module to meter module. 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 TM484 mono LED PPM is best suited for mono and inline channels. The TM488, quad hi-res stereo LED PPM combines 4 stereo meters in one module. In addition, there are the stereo hi-res LED PPM TM482 and the mono LED PPM TM481. 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.