M480C · RTO-144 Connections

M480C Input Module

Rear connector

REAR VIEW · CARD EDGE · 44 CONTACTS1MIC-IN-B +234Aux +5Cue Solo +6M1 OUT +7M2 OUT +8910Fader Return −111213Line IN-B +141516Fader Send +171819VEE-AUDIO -25V20GND21VCC-AUDIO +25V22AMIC-IN-B −BCDAux −ECue Solo −FM1 OUT −HM2 OUT −JKLFader Return +MNPLine IN-B −RSTFader Send −UVWXYPhantom +48VZTOP ROW 1-22: COMPONENT SIDE · BOTTOM ROW A-Z: SOLDER SIDEInputOutputInput / outputPowerGround / chassis

Inputs and outputs

M480CM480C Input ModuleMIC-IN-BA1 1 / ALine IN-BA2 13 / PFader ReturnB4 L / 10Cue SoloB1 5 / EAuxB2 4 / DM1 OUTA3 6 / FM2 OUTA4 7 / HFader SendB3 16 / TINPUTSOUTPUTSVEE-AUDIO-25 V 19 / GND 20VCC-AUDIO25 V 21 / GND 20Phantom48 V Y / GND 20

Audio connections · RTO-144 A / B

PortSignalDirPin +Pin −Pad +Pad −
A1MIC-IN-Bin1A1.A.1.PA.A.1.N
A2Line IN-Bin13P13.A.2.PP.A.2.N
A3M1 OUTout6F6.A.3.PF.A.3.N
A4M2 OUTout7H7.A.4.PH.A.4.N
B1Cue Soloio5E5.B.1.PE.B.1.N
B2Auxio4D4.B.2.PD.B.2.N
B3Fader Sendout16T16.B.3.PT.B.3.N
B4Fader ReturninL10L.B.4.P10.B.4.N

Power · bench PSU

RailStyleVoltsMax ASupplyGroundLink
VEE-AUDIONEW-250.219202
VCC-AUDIONEW250.221201
Phantom—480.2Y20—

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
M480C RTO-144 connections
Drn.
make_rto144.py
Date
Oct 17 2026