Noise + S&H 130 Build Guide

Assembly Instructions

The Noise 130 module has no particular build requirements not already covered in the ‘General Build Info' page except for:

The Noise + S&H module differs from other modules in that the socket PCB also has components on it.  Naturally this does mean that the sockets should be soldered only after all components have been soldered in place. Depending on your confidence, it may also be prudent to test the complete module before soldering the jack sockets in place.

U4 on the main PCB does not use a socket and is soldered direct to the PCB. Aligning the legs of the IC with the PCB pads takes some patience especially if you have not done one like this before.

A few of the resistors are mounted vertically due to space constraints and the desire not to use 1/8W resistors which earlier prototypes did.

Calibration

This module has two calibration trimmers, one on each of the two PCBs.

Main PCB – White noise level

Adjust Pr1 to set the white noise output level at around +/-5V using an oscilloscope. Being noise, there is no definitive voltage level so you can also adjust to your own preference.

Socket PCB – Red noise offset

Adjust Pr1 to set the red noise output as that it is equally distributed above and below 0V using an oscilloscope

Main PCB Parts List 

 *See below for MOTM or MU Potentiometers

 Socket PCB Parts List  

*See below for MOTM or MU Potentiometers

Module Parts List 

PCB Layout