Bob It's possible that what you're seeing might well be normal operation when they're operating as a pair, since Ref-0, what we've been calling the slave because it has no GPS receiver, is actually the default "master" in operational terms. I only have Ref-1 units operating stand alone so perhaps someone else with an operational pair can confirm whether or not any routine communication exists with Ref-1 once the boot up sequence is finished? In particular, when you say you can't communicate are you referring to the J6 RS422/1PPS port, the J8 diagnostic port, or both? A good test might be to set up your Ref-1 to operate stand alone. Remove the interface cable and just fit two links to the Ref-1 J5 diagnostic connector, pin 2 to 8 and pin 3 to 13, and then power it up as normal. It won't be outputting 15MHz and 1 PPS until the "fault" light goes off and the "on" light is on, but you should be able to communicate with the J8 diagnostics port as soon as it's powered up. I've used SatStat and other HP series Z3xx compatible software and all worked fine, and that should continue after the boot up period ends and the outputs are enabled. I haven't so far tried the J6 RS422 port with the Lucent software as I've been more interested in the GPS side of things and didn't want to dig into the box itself before I've had time to study the RFTG-m manual re the software commands and better understand the implications. Regards Nigel GM8PZR In a message dated 03/11/2014 03:16:35 GMT Standard Time, [email protected] writes:
Hi Bob, I am only able to communicate with my system through the REF-0/slave unit. I had thought this was normal behavior till someone, you perhaps, posted that that was not correct. So, I've emailed Aecis to request a replacement REF-1. Bob From: Bob Camp <[email protected]> To: Discussion of precise time and frequency measurement <[email protected]> Sent: Sunday, November 2, 2014 8:20 PM Subject: Re: [time-nuts] Z3812 Diag port data? RE: time-nuts Digest, Vol 124, Issue 26 HI So at least there is one way communications from the GPS box to the slave box. Bidirectional com would be a bit complex given the lack of UART’s on the pc board. I’d bet it just runs through a standard set of messages on the GPS and watches the results. The way to quickly prove I’m wrong would be to issue a command to the GPS from the slave that it must respond to. Something like go into survey mode or set the location to xxx yyy zzz. I’ve certainly been wrong before. I suppose they could do dual source TTL com directly at the GPS module level. I’d think that would drive the GPS unit a bit nuts when the slave started switching things around…. Bob > On Nov 2, 2014, at 4:16 PM, n2lym <[email protected]> wrote: > > Yes the diagnostic port on the slave unit diaplay's gps data just like the Z3811. Therefore there must be serial data being exchanged on the 15 pin interconnect. > > > Mike > > N2LYM > > > > > > Message: 5 > Date: Sun, 2 Nov 2014 15:58:20 -0500 > From: [email protected] > To: [email protected] > Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, > Z3810A, Z3811A, Z3812... > Message-ID: <[email protected]> > Content-Type: text/plain; charset="UTF-8" > > Just another thought though, does the diagnostic port on the slave also > communicate with SatStat etc? > > That would imply at least a transfer of serial data in one direction, even > if not for the control functions. > > Regards > > Nigel > GM8PZR > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to htt ps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
