M479 · RTO-144 Connections

M479 Dual Auxiliary Module

Rear connector

P2 — REAR VIEW · CARD EDGE · CONTACTS 1-21 SHOWN1Summing IN 1 +2Summing IN 1 −3Summing IN 2 +4Summing IN 2 −567891011OUT 1 +12OUT 1 −131415OUT 2 +16OUT 2 −171819VEE-AUDIO -25V20GND21VCC-AUDIO +25VInputOutputPowerGround / chassis

Inputs and outputs

M479M479 Dual Auxiliary ModuleSumming IN 1A1 P2-1 / P2-2Summing IN 2A2 P2-3 / P2-4OUT 1A3 P2-11 / P2-12OUT 2A4 P2-15 / P2-16INPUTSOUTPUTSVEE-AUDIO-25 V P2-19 / GND P2-20VCC-AUDIO25 V P2-21 / GND P2-20

Audio connections · RTO-144 A / B

PortSignalDirPin +Pin −Pad +Pad −
A1Summing IN 1inP2-1P2-21.A.1.P2.A.1.N
A2Summing IN 2inP2-3P2-43.A.2.P4.A.2.N
A3OUT 1outP2-11P2-1211.A.3.P12.A.3.N
A4OUT 2outP2-15P2-1615.A.4.P16.A.4.N

Power · bench PSU

RailStyleVoltsMax ASupplyGroundLink
VEE-AUDIONEW-250.1P2-19P2-202
VCC-AUDIONEW250.2P2-21P2-201

Source: Ward-Beck Systems - Module RTO-144 Jumper calculator.xlsx (Database tab). Pin direction is inferred from the signal name. Verify against the module schematic before wiring.

WBS Ward-Beck Systems Ltd.
Title
M479 RTO-144 connections
Drn.
make_rto144.py
Date
Oct 17 2026