[time-nuts] Z3805 utility, Was: AW: (no subject)

[Stanley Reynolds]

----- Original Message ----
From: Jeff Hook <jeffhook at comcast.net>
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
Sent: Sun, May 23, 2010 12:42:45 PM
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)

Bob
My 3805 cables look like this

DB9      DB25
2              2
3              3
5              7
(Null Modem)

Jeff

<snip>

straight cable is 2 to 2 to 3 to 3

null modem would be 

2          3
3          2

normal usage would be:

terminal (straight cable) modem (phone line) modem (straight cable) computer
computer (straight cable) modem (phone line) modem (straight cable) computer

or if no modems :

terminal (null modem) computer

As has been mentioned many exceptions to the rule. 

Stanley