Re: modem pin connections
Posted: August 28th, 1984, 7:41 am
Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10 beta 3/9/83; site cosivax.UUCP
Path: utzoo!linus!decvax!tektronix!uw-beaver!cornell!vax135!houxz!houxm!mhuxl!ulysses!gamma!mb2c!uofm-cv!cosivax!dbo
From: [email protected]
Newsgroups: fa.info-mac
Subject: Re: modem pin connections
Message-ID:
Date: Tue, 24-Jul-84 12:39:02 EDT
Article-I.D.: cosivax.160
Posted: Tue Jul 24 12:39:02 1984
Date-Received: Fri, 27-Jul-84 02:17:57 EDT
References:
Organization: COSI, Ann Arbor, MI
Lines: 36
The modem signals as published in ST.mac (May 1984) are as follows:
MAC APPLE MODEM
1. frame ground nc
2. +5v data set ready
3. signal ground signal ground
4. transmit data + not connected
5. transmit data - receive data
6. +12v data terminal ready
7. input (HSC) carrier detect
8. receive data + frame ground
9. receive data - transmit data
The connections they suggest are:
3. 3.
5. -> 9.
6. -> 6.
7. 7. (signal ground)
5. -> 2. (transmit data)
7. <- 8. (carrier detect)
9. <- 3. (receive data)
I didn't bother to run a high signal from MAC 6. to data terminal ready
(ROBOTICS 20) because the modem doesn't seem to need it and I don't
really care if the modem hangs up when I turn my terminal off (also, I
had some 4 wire cable handy, so it was just more convenient).
This setup works fine for a Mac running MacTerminal.
Posting-Version: version B 2.10 beta 3/9/83; site cosivax.UUCP
Path: utzoo!linus!decvax!tektronix!uw-beaver!cornell!vax135!houxz!houxm!mhuxl!ulysses!gamma!mb2c!uofm-cv!cosivax!dbo
From: [email protected]
Newsgroups: fa.info-mac
Subject: Re: modem pin connections
Message-ID:
Date: Tue, 24-Jul-84 12:39:02 EDT
Article-I.D.: cosivax.160
Posted: Tue Jul 24 12:39:02 1984
Date-Received: Fri, 27-Jul-84 02:17:57 EDT
References:
Organization: COSI, Ann Arbor, MI
Lines: 36
The modem signals as published in ST.mac (May 1984) are as follows:
MAC APPLE MODEM
1. frame ground nc
2. +5v data set ready
3. signal ground signal ground
4. transmit data + not connected
5. transmit data - receive data
6. +12v data terminal ready
7. input (HSC) carrier detect
8. receive data + frame ground
9. receive data - transmit data
The connections they suggest are:
3. 3.
5. -> 9.
6. -> 6.
7. 7. (signal ground)
5. -> 2. (transmit data)
7. <- 8. (carrier detect)
9. <- 3. (receive data)
I didn't bother to run a high signal from MAC 6. to data terminal ready
(ROBOTICS 20) because the modem doesn't seem to need it and I don't
really care if the modem hangs up when I turn my terminal off (also, I
had some 4 wire cable handy, so it was just more convenient).
This setup works fine for a Mac running MacTerminal.