[time-nuts] Z3801A, Z3805A Pforth interpreter.
Mark C. Stephens
marks at non-stop.com.au
Sat May 18 10:19:28 EDT 2013
Tom, Do you know of a way to change the Port 2 Output on a Z3805A to something that can be used by NTPD per chance?
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On Behalf Of Tom Van Baak
Sent: Sunday, 19 May 2013 12:11 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Z3801A, Z3805A Pforth interpreter.
> So typing watch exits the interpreter, but it also appears to reboot so don't mess with your master clock now...
Use halt rather than watch to exit pForth mode; that's how I alternate between SCPI and p4th on a running system. See also: http://leapsecond.com/museum/z3801a/eeprom.htm
- I use pr_gps_id to get the VP version numbers rather than tap the Oncore Rx/Tx pins.
- I send hourly queries for pll_rep, efc_rep to dump the circular EFC regression table.
- The following give a little more info than the SCPI syst:stat? command:
print_stat, pr_gps_istate, pr_time_raim, pr_gps_debug, print_vis
- Note that pr_efc gives 32x higher resolution than SCPI diag:rosc:efc:abs? command. That is, it shows you the fraction that goes into the DAC dither calculation. You can set the DAC too. See also: http://leapsecond.com/pages/z3801a-efc/
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