A-180-6 is a triple voltage buffer module with separately adjustable levels for each unit. The maximum amplification is 1 (factory setting) but can be changed to 2 (by installing a solder bridge).

Technical data:

• input resistance/impedance: about 1M
• output resistance/impedance: about 1k
• all signals are DC coupled 

Typical applications

• buffering and duplication of audio or control voltage signals with separately adjustable output levels
• triple control voltage source (replacement for module A-176)
• combination of both functions (e.g. unit 1 as control voltage source, units 2 and 3 as adjustable buffers with a common or two separate input signals

This document explains the function of the pin headers, jumpers and solder bridges: A180_6_jumper.pdf

Inputs 2 and 3 are normalled to the preceding unit. That way the module can be used for the distribution of only one signal (inputs 2 and 3 are open) or for up to three separate signals (with all inputs connected).
For input 2 the kind of normalling can be changed so that the (potentionally attenuated) output voltage of unit 1 is used as default signal for input 2 (by altering a solder bridge). In this case level control 1 affects also the units 2 and 3 provided that the input sockets 2 and 3 are not wired.
Input socket 1 can be normalled to +5V by means aof a jumper. In this case the module can be used also as control voltage source (replacement for the obsolete module A-176). The output voltage range is 0...+5V or 0...+10V according to the selected maximum amplification (1 or 2).