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M718A
Type module
Category COMMUNICATION
Try it simulator & front panel · download package (zip)
Earliest dated evidence 1995|28 — original file date
Evidence saved 1995-03-07: WBSps Engineering from H drive-20261018T013433Z-1-003/WBSps Engineering from H drive/WBSps - M7XX/M718/M718A/14-291A.PCB
Confidence medium
All years found 1995|28
Variants M718
Folder Modules/COMMUNICATION/M718A

Connections

What it is made of and what it is part of.

Pinout & connections

No page of its own numbers M718A's contacts: these are its variant M718's, drawn faded — not confirmed for M718A.

EDGE CONNECTOR · 1–54NUMBERED SIDE · AS ON M7181: +10 TO +25 VOLTS DC power rail · confidence variant (from a variant) prose · 1995 - M718 - 718-02-001 - COMPONENT LAYOUT.wp, p. 1 “Power Supply The +10 to +25 volts dc applied at pin 1 of the edge connector is supplied to the switching regulator U9 through fuse F1, filtering capacitor C10 …”1+10 TO +25 VOLTS DCPWR23456789101112131415161718192021222324252627282930313233: BUSY TALLY OUTPUT control / tally · confidence variant (from a variant) prose · 1995 - M718 - 718-02-001 - COMPONENT LAYOUT.wp, p. 1 “The busy tally output on edge connector pin 33 is an open collector output capable of sinking 30 mA.”33BUSY TALLY OUTPUTCTL343536373839404142434445464748: TALKBACK ADDRESS OUTPUT audio out · confidence variant (from a variant) prose · 1995 - M718 - 718-02-001 - COMPONENT LAYOUT.wp, p. 1 “The talkback address output is a four bit binary code with the LSB on edge connector pin 54 and the MSB on edge connector pin 48.”48TALKBACK ADDRESS OUTPUTOUT495051525354: TALKBACK ADDRESS OUTPUT audio out · confidence variant (from a variant) prose · 1995 - M718 - 718-02-001 - COMPONENT LAYOUT.wp, p. 1 “The talkback address output is a four bit binary code with the LSB on edge connector pin 54 and the MSB on edge connector pin 48.”54TALKBACK ADDRESS OUTPUTOUT
KEYOUT audio outPWR power railCTL control / tallyvariant
M718Apins as on its variant M718 (not confirmed for M718A)+10 TO +25 VO… 1M718ATALKBACK ADDRESS…48·54BUSY TALLY OU… 33MADE OF · SUB-ASSEMBLIES (1)SA14-291Circuit boards (SA14-nnn)

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

Pin evidence — 4 contacts
PinSignalKindConfidenceRead fromSource
1+10 TO +25 VOLTS DCpower railvariantprose1995 - M718 - 718-02-001 - COMPONENT LAYOUT.wp, p. 1
“Power Supply The +10 to +25 volts dc applied at pin 1 of the edge connector is supplied to the switching regulator U9 through fuse F1, filt…”
33BUSY TALLY OUTPUTcontrol / tallyvariantprose1995 - M718 - 718-02-001 - COMPONENT LAYOUT.wp, p. 1
“The busy tally output on edge connector pin 33 is an open collector output capable of sinking 30 mA.”
48TALKBACK ADDRESS OUTPUTaudio outvariantprose1995 - M718 - 718-02-001 - COMPONENT LAYOUT.wp, p. 1
“The talkback address output is a four bit binary code with the LSB on edge connector pin 54 and the MSB on edge connector pin 48.”
54TALKBACK ADDRESS OUTPUTaudio outvariantprose1995 - M718 - 718-02-001 - COMPONENT LAYOUT.wp, p. 1
“The talkback address output is a four bit binary code with the LSB on edge connector pin 54 and the MSB on edge connector pin 48.”

Pictures

14-291A-top.svg14-291A-bottom.svg

Drawings & design files (1)

Year File
1995|28 1995 - M718A - 14-291A.pcb note

Circuit boards (1)

File Board Open
1995 - M718A - 14-291A.pcb 14-291A - M718A interactive viewer · KiCad board · top render · bottom render

Sub-assemblies & parts used (1)

Item What Family Year How we know
SA14-291 Circuit boards (SA14-nnn) drawing filed with it

Named in other drawings & documents (3)

File Page
1995 - M405P - ITEMIMP(1).TXT (2).docx 1
1995 - M405P - ITEMIMP(1).TXT.docx 1
1995 - M405P - ITEMIMP.TXT.docx 1
An archive by Anthony Peter Kuzub · WBSps.Kuzub.com · WBSps.ca
generated from M718A.md