[time-nuts] Re: HP Z3801A project update

[Larry McDavid]

I give up! Where is this $5 USB-to-RS422 Adapter to be found?

Amazon has such a DTECH adapter for $22.

I am using a RS422-to-RS232 adapter and it has been totally reliable for 
many years. I am not trying to use the pps output via the serial link so 
any delay in the USB adapter would be irrelevant.

Is anyone successfully using a USB-to-RS422 adapter to communicate with 
a HP Z3801A? How does the Z3801A software need to be configured for USB 
or does the USB adapter simulate a RS232 port?

A lot was left unsaid in that simple statement below...

Larry

On 2/24/2022 8:53 PM, Lux, Jim wrote:
> On 2/24/22 7:25 PM, ed breya wrote:
>> Paul and Hal, I think there may be some confusion here. I modified the 
>> Z3801A to RS-232 way back when I first got it. My recent post was just 
>> discussing some of what's in this demo/testing unit thing. It's just a 
>> translator for TTL/RS-232 for when the GPS RX board (TTL serial) is 
>> used by itself, hooked to a PC (RS-232), so the WinOncore SW can talk 
>> to it. When the RX board is inside the Z3801A, it's controlled in that 
>> environment.
> 
> These days, since PCs don't have serial ports, you can buy a RS422 USB 
> adapter for $5.  If I were doing it now, I wouldn't bother reconfiguring.

-- 
Best wishes,

Larry McDavid W6FUB
Anaheim, California (SE of Los Angeles, near Disneyland)