M2SYNTH Ring Modulator 151 Manual de usuario

Ring Modulator 151 V1b 1

Ring Modulator

Kit Assembly Instructions

Ring Modulator 151 V1b 2

Features

•Two modes of operation AxB where the output signal consists of the sum and the

difference of the input frequencies. A second mode is 2A where the output signal is

twice input A signal.

•Bypass controls to mix the input signals with the ring modulated output signal

Kit Contents

Description

Reference

MOTM

Qty

Notes

Components Kit

7216-251-1

See BOM

Accessories Pack including:

7216-251-2

Pot Sticky Pads

7210-188

10mm M4 Spacers

7210-186

M4 x 14 Cap Head Screws

7210-187

M3 x 8mm Stainless Panel Screws

7210-189

8-Pin IC Socket

7212-331

Power Lead

7216-164

MOTM Front Panel

7216-551

Black

MOTM Back Panel

7216-851

MU Front and Back Panel

7219-551

Main PCB

7216-051

Jack Socket PCB

7215-722

Jack Sockets

7216-604

Pack of 4

B100k Pots Long Shaft Angled

7216-704

Pack of 4

B100k Pots Short Shaft Angled

7216-734

Pack of 4

KM20B Knobs

7212-104

Pack of 4

MU Knobs

7219-104

Pack of 4

General Assembly Guidance Booklet

BOM

S-7216-051-b

Circuit Schematic

S-7216-051-b

PCB Layout

S-7216-051-b

Ring Modulator 151 V1b 3

Assembly Instructions

Other than for chip U2, the Ring Modulator has no particular requirements not already

covered in the ‘General Guidance on a M²Synth Module Assembly’ booklet included with

this kit. U2 is surface mount but can still be easily soldered by hand using a fine tipped

soldering iron.

Calibration

This module requires calibration using Pr1 & Pr2 using a signal generator and an

oscilloscope. Don’t have the test gear? Listen to the output and adjust for the lowest

audible level where the text below refers to <30mV.

Apply a 1kHz, 10V P-P sine wave to input A with the toggle switch in the up position, Input

level pot at 100% and Bypass at 0%. Adjust Pr2 until output is <30mV P-P.

As above but apply sine wave to input B, adjust Pr1 until output is <30mV.

To prove operation, apply a 1kHz 10V P-P sine wave to Input A, toggle switch down and

check output is a sine wave at 2kHz (frequency doubling).

Specification

•Supply voltage +/-12Vdc

•Supply current +12mA / -12mA

•Main PCB dimensions 43.5x154.85mm

Need tech support, post questions on our forum hosted by modwiggler.com

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