Hi, On Monday, March 05, 2012 10:18:58 PM Sam Reaves wrote: > Hello Group, > > I just bought four of the FE5680A's that have the standard configuration > Pin 1+15, Pin 2 Gnd, Pin 3 Lock, Pin 4 +5V Pin 5 Gnd, Pin 6 1pps?, Pin 7 > 10MHz, Pin 8 TX, Pin 9 RX. > > I have a LED with a 330 ohm current limiting resistor on pin 3 (the > 74ACT240 can sink up to 24mA and I am well below that) for the lock > indicator. All of my units lock and produce 10MHz although the 1pps never > switches. > > I can not get any of the units to communicate using the DB-9 connections. I > scoped the receive data into the unit all the way to the microcontroller. > The RS232 and TTL levels for the data look perfect as well as the timing > for 9600-N-8-1. However the unit never transmits any data.I scoped this all > the way to the micro as well. Not a pulse spike or anything.
Were you trying to communicate with the ASCII commands like S<cr> and F = XXXXXXXX (cr) or were you using the binary commands documented in http://www.wa6vhs.com/Test%20equipment/FREQUENCY%20STANDARDS/FE-5680A/5680%20TECH%20MANUAL.pdf Seems to me that the units currently available on eBay only support the binary commands. Cheers. > > Has anyone determined what the second serial interface is for? It seems to > me that it would not make any sense for FE to install the RS232 port if it > could not be used. > > Any hints? > > Thanks > Sam > W3OHM > _______________________________________________ > 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. -- Mike McCauley [email protected] Open System Consultants Pty. Ltd 9 Bulbul Place Currumbin Waters QLD 4223 Australia http://www.open.com.au Phone +61 7 5598-7474 Fax +61 7 5598-7070 Radiator: the most portable, flexible and configurable RADIUS server anywhere. SQL, proxy, DBM, files, LDAP, NIS+, password, NT, Emerald, Platypus, Freeside, TACACS+, PAM, external, Active Directory, EAP, TLS, TTLS, PEAP, TNC, WiMAX, RSA, Vasco, Yubikey, MOTP, HOTP, TOTP, DIAMETER etc. Full source on Unix, Windows, MacOSX, Solaris, VMS, NetWare etc. _______________________________________________ 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.
