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M490E — Stereo Input Module
Type module
Category INPUT-PRE-AMPS
Try it simulator & front panel · download package (zip)
Earliest dated evidence 1978|11 — named in document
Evidence named in 1978 - 490-01-005 - M490E STEREO INPUT MODULE FUNCTIONAL DIAGRAM - DRN GEB - ENG GEB - ISS 3.jpg
Confidence low (named by)
All years found 1978|11, 1990|23, 1992|25, 1995|28, 2006|39
Used in jobs R1400-R2400-sales
Variants M490, M490A, M490B, M490C, M490D, M490F, M490G, M490H, M490J, M490K, M490L, M490M, M490N, M490T
Folder DOCUMENTS/RECENT SCANS/WBSps.ca 20210317 - Large pile of D
Folder Modules/INPUT-PRE-AMPS/M490E

Connections and circuit (ideal SPICE model)

Drawn live from its RTO-144 connections: run the generator, turn the gain, watch the VU. Open the netlist to see how the model is built.

Pinout & connections

Each contact as its own documents name it: 16 named (15 high, 1 low confidence). An empty slot is a contact no page names. Hover a contact for its source; the table under the drawing lists them.

CONNECTOR P1 · 1–4NUMBERED SIDEP1-1: LEFT PGRM 1 audio bus / pair · confidence high rto-144 · M490E.rto144.json, p. 11LEFT PGRM 1 +BUSP1-2: LEFT PGRM 1 audio bus / pair · confidence high rto-144 · M490E.rto144.json, p. 12LEFT PGRM 1 −BUSP1-3: RIGHT PGRM 1 audio bus / pair · confidence high rto-144 · M490E.rto144.json, p. 13RIGHT PGRM 1 +BUSP1-4: RIGHT PGRM 1 audio bus / pair · confidence high rto-144 · M490E.rto144.json, p. 14RIGHT PGRM 1 −BUS
CONNECTOR P2 · A–YLETTERED SIDEP2-A: MIC IN A audio in · confidence high rto-144 · M490E.rto144.json, p. 1AMIC IN A −INBP2-C: MIC IN B audio in · confidence high rto-144 · M490E.rto144.json, p. 1CMIC IN B −INP2-D: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “P2-17 < P2-D”Dsignal not read?P2-E: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “P2-E”Esignal not read?P2-F: INSERT SEND audio out · confidence high rto-144 · M490E.rto144.json, p. 1FINSERT SEND −OUTP2-H: INSERT RETURN audio in · confidence high rto-144 · M490E.rto144.json, p. 1HINSERT RETURN −INP2-J: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “P2-J”Jsignal not read?KLP2-M: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “Pz-M”Msignal not read?P2-N: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “Ext P2-N ON”Nsignal not read?P2-P: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “> P2-P Ch”Psignal not read?RSTUP2-V: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “Pz-V”Vsignal not read?WXYCONNECTOR P2 · 1–21NUMBERED SIDEP2-1: MIC IN A audio in · confidence high rto-144 · M490E.rto144.json, p. 11MIC IN A +INP2-2: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “P2-2 €”2signal not read?P2-3: MIC IN B audio in · confidence high rto-144 · M490E.rto144.json, p. 13MIC IN B +INP2-4: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “ChaNNEL inputs -10 To +icjbm coo_ NoMinal Right ChANNEL P2 -4”4signal not read?P2-5: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “P2-5”5signal not read?P2-6: INSERT SEND audio out · confidence high rto-144 · M490E.rto144.json, p. 16INSERT SEND +OUTP2-7: INSERT RETURN audio in · confidence high rto-144 · M490E.rto144.json, p. 17INSERT RETURN +INP2-8: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “P2-8”8signal not read?P2-9: INPUT audio in · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “input Pz - 9,k < Shield”9INPUTIN1011P2-12: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “R92 EXt 3k3 Ch P2-12 € DfF C33”12signal not read?P2-13: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “P2-13 Ch Aon”13signal not read?141516P2-17: signal not read used on a schematic, signal not read · confidence low schematic · 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg, p. 1 “P2-17 < P2-D”17signal not read?18P2-19: -25 V power rail · confidence high rto-144 · M490E.rto144.json, p. 119-25 VPWRP2-20: COMMON ground / common · confidence high rto-144 · M490E.rto144.json, p. 120COMMONGNDP2-21: +25 V power rail · confidence high rto-144 · M490E.rto144.json, p. 121+25 VPWR
KEYIN audio inOUT audio outBUS audio bus / pairPWR power railGND ground / common? used on a schematic, signal not readhigh: sheetlow: schematic
M490E — Stereo Input Module-25 V P2-19+25 V P2-21M490ESTEREO INPUTMODULEMIC IN AP2-A·P2-1MIC IN BP2-C·P2-3INSERT RETURNP2-H·P2-7INPUTP2-9LEFT PGRM 1P1-1·P1-2RIGHT PGRM 1P1-3·P1-4INSERT SENDP2-F·P2-6COMMON P2-20CONNECTED TO · CONSOLES & JOBS (1)R1400-R2400-salesconsole / jobMADE OF · SUB-ASSEMBLIES (1)7-112Component Side Nqie Compone…DRAWN WITH · MODULES (1)M490on 4 drawings with it

pinout (SVG) · connections (SVG) · pins (JSON)

Pin evidence — 30 contacts
PinSignalKindConfidenceRead fromSource
P1-1LEFT PGRM 1audio bus / pairhighrto-144M490E.rto144.json, p. 1
P1-2LEFT PGRM 1audio bus / pairhighrto-144M490E.rto144.json, p. 1
P1-3RIGHT PGRM 1
also: PGM (schematic)		audio bus / pairhighrto-144M490E.rto144.json, p. 1
P1-4RIGHT PGRM 1audio bus / pairhighrto-144M490E.rto144.json, p. 1
P2-AMIC IN Aaudio inhighrto-144M490E.rto144.json, p. 1
P2-1MIC IN Aaudio inhighrto-144M490E.rto144.json, p. 1
P2-2—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“P2-2 €”
P2-CMIC IN Baudio inhighrto-144M490E.rto144.json, p. 1
P2-3MIC IN Baudio inhighrto-144M490E.rto144.json, p. 1
P2-D—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“P2-17 < P2-D”
P2-4—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“ChaNNEL inputs -10 To +icjbm coo_ NoMinal Right ChANNEL P2 -4”
P2-E—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“P2-E”
P2-5—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“P2-5”
P2-FINSERT SENDaudio outhighrto-144M490E.rto144.json, p. 1
P2-6INSERT SENDaudio outhighrto-144M490E.rto144.json, p. 1
P2-HINSERT RETURNaudio inhighrto-144M490E.rto144.json, p. 1
P2-7INSERT RETURNaudio inhighrto-144M490E.rto144.json, p. 1
P2-J—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“P2-J”
P2-8—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“P2-8”
P2-9INPUTaudio inlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“input Pz - 9,k < Shield”
P2-M—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“Pz-M”
P2-N—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“Ext P2-N ON”
P2-12—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“R92 EXt 3k3 Ch P2-12 € DfF C33”
P2-P—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“> P2-P Ch”
P2-13—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“P2-13 Ch Aon”
P2-17—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“P2-17 < P2-D”
P2-V—used on a schematic, signal not readlowschematic19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT C…, p. 1
“Pz-V”
P2-19-25 Vpower railhighrto-144M490E.rto144.json, p. 1
P2-20COMMON
also: COMMON (rto-144)		ground / commonhighrto-144M490E.rto144.json, p. 1
P2-21+25 Vpower railhighrto-144M490E.rto144.json, p. 1

Pictures

1978 - M490E - 001.jpg1978 - M490E - 002.jpg1978 - M490E - 90-04-013 - THE PROGRAM CHANNE TAICCBS THE BUILT-IN LAY.jpg1978 - M490E - wbsps - module - M490e 001.jpg1978 - M490E - wbsps - module - M490e 001_small.jpg1978 - M490E - wbsps - module - M490e 003.jpg1978 - M490E - wbsps - module - M490e 003_small.jpg19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg1990 - R1400 - R2400 - 010.jpg

Physical manual inventory

Item Location Status Scanned
M490E - Stereo Input - User Guide SCANNED BUT NEEDS STICHING
M490E - Stereo Input - User Guide Recently scanned and stiched by WB

Photos & scans (9)

Year File
1978|11 1978 - M490E - 001.jpg note
1978|11 1978 - M490E - 002.jpg note
1978|11 1978 - M490E - 90-04-013 - THE PROGRAM CHANNE TAICCBS THE BUILT-IN LAY.jpg note
1978|11 1978 - M490E - wbsps - module - M490e 001.jpg note
1978|11 1978 - M490E - wbsps - module - M490e 001_small.jpg note
1978|11 1978 - M490E - wbsps - module - M490e 003.jpg note
1978|11 1978 - M490E - wbsps - module - M490e 003_small.jpg note
? 19xx - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg note
? 19xx - M490E - DOC - 490-02-006 - RIIZ IOK SWIO ATT CUT STEREO INPUT MODULE.jpg note

Sub-assemblies & parts used (1)

Item What Family Year How we know
7-112 Component Side Nqie Components Sub-assemblies (n-nnn) 1983|16 named in its manual

Consoles & jobs it is connected to (1)

Their own drawings name this module.

Job Year Drawing Page
R1400-R2400-sales 1990 - R1400 - R2400 - 010.jpg 1

Named in other drawings & documents (1)

File Page
19xx - RTO-144 - Module RTO-144 Jumper calculator.xlsx 1

Drawings (2)

Each scan with its trace laid over it: the slider runs from the scan to the vector drawing. Click one to see it large and save it as SVG, DXF, KiCad, PDF or PowerPoint.

490-02-006 · schematic
Riiz Iok Swio Att Cut Stereo Input Moduleviewer
90-04-013 · connector layout · 1978|11
The Program Channe Taiccbs The Built-In Layviewer

Read from the drawing title blocks.

Drawing Title Date Drawn by Checked by Iss. Source
490-02-006 Riiz Iok Swio Att Cut Stereo Input Module GEB (Gerry E. Bell) GEB (Gerry E. Bell) file
90-04-013 The Program Channe Taiccbs The Built-In Lay file
An archive by Anthony Peter Kuzub · WBSps.Kuzub.com · WBSps.ca
generated from M490E.md