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

[Bill Hawkins]

When all else fails, get out the voltmeter.

Do you have power to the antenna? Is it the right voltage? All the way to
the antenna?

What volts are on pins 2 or 3 relative to pin 7 in the comm connector?

If you see 12 volts, that's RS-422. You may have burned out your computer's
serial port.

If you see less than 5 volts, that's RS-232 and all should be well, unless
you see zero volts.

I may have the RS-xxx volts somewhat off because my memory isn't what it
used to be.

The guy you bought it from should be able to help with comm basics.

Bill Hawkins


-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Robert Benward
Sent: Saturday, May 22, 2010 2:08 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Z3805 utility, Was: AW: (no subject)

Hi All,
I hooked everything up and I still get nothing.  I can't seem to establish
communications  with the Z3805.  I tried a 
null modem as well, in case the cable (supplied) was wired with the wrong
connector gender.  I see a green blinking 
light inside, it he left rear corner of the box.  Everything is warm, but
nothing else.  Any ideas?

Bob