Last update: 21-Oct-2010 23:44 UTC
9600 baud, 8-bits, 1-stop, no parity
The refclock_hopf_serial driver supports hopf electronic receivers with serial Interface kompatibel 6021.
Additional software and information about the software drivers is available from: http://www.ATLSoft.de/ntp.
Latest NTP driver source, executables and documentation is maintained at: http://www.ATLSoft.de/ntp.
The hopf clock driver has been tested on the following software and hardware platforms:
|i386 (PC)||Windows NT|
|i386 (PC)||Windows 2000|
The driver attempts to open the device
_X_ is the NTP refclock unit number as defined by the LSB of the refclock address. Valid refclock unit numbers are 0 - 3.
The user is expected to provide a symbolic link to an available serial port device. This is typically performed by a command such as:
> ln -s /dev/ttyS0 /dev/hopfclock0
Windows NT does not support symbolic links to device files.
COMx: is used by the driver, based on the refclock unit number, where unit 1 corresponds to COM1: and unit 3 corresponds to COM3.
Specifies the time offset calibration factor, in seconds and fraction, with default 0.0. Should be set to 20 milliseconds to correct serial line and operating system delays incurred in capturing time stamps from the synchronous packets.
Specifies the driver reference identifier, GPS or DCF.
flag1 0 | 1
When set to 1, driver syncs even if only crystal driven.
As specified in clock manual under pt. “Data String for NTP (Network Time Protocol)”.
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