M497B · RTO-144 Connections
M497B - Dual Master Module
Rear connector
Inputs and outputs
Audio connections · RTO-144 A / B
| Port | Signal | Dir | Pin + | Pin − | Pad + | Pad − |
|---|---|---|---|---|---|---|
| A1 | Left Sum IN | in | P2-1 | P2-A | 1.A.1.P | A.A.1.N |
| A2 | Right SUM in | in | P2-2 | P2-B | 2.A.2.P | B.A.2.N |
| A3 | OUT LEFT | out | P2-12 | P2-N | 12.A.3.P | N.A.3.N |
| A4 | OUT RIGHT | out | P2-15 | P2-S | 15.A.4.P | S.A.4.N |
| B1 | Left Line IN | in | P2-4 | P2-D | 4.B.1.P | D.B.1.N |
| B2 | Right Line in | in | P2-5 | P2-E | 5.B.2.P | E.B.2.N |
| B3 | VU OUT LEFT | out | P2-14 | P2-R | 14.B.3.P | R.B.3.N |
| B4 | VU OUT RIGHT | out | P2-17 | P2-U | 17.B.4.P | U.B.4.N |
Power · bench PSU
| Rail | Style | Volts | Max A | Supply | Ground | Link |
|---|---|---|---|---|---|---|
| VEE-AUDIO | NEW | -25 | 0.2 | P2-19 | P2-20 | 2 |
| VCC-AUDIO | NEW | 25 | 0.2 | P2-21 | P2-20 | 1 |
Jumpers
| Function | Designation | From | To |
|---|---|---|---|
| Insert LEFT + | JMP.8.6 | P2-8 | P2-6 |
| Insert LEFT - | JMP.F.J | P2-J | P2-F |
| Insert Right + | JMP.7.9 | P2-7 | P2-9 |
| Insert Right - | JMP.H.K | P2-H | P2-K |
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
M497B RTO-144 connections
Drn.
make_rto144.py
Date
Oct 17 2026