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diff --git a/html/driver26.htm b/html/driver26.htm deleted file mode 100644 index eabbc96554e9..000000000000 --- a/html/driver26.htm +++ /dev/null @@ -1,109 +0,0 @@ -<HTML> -<HEAD> - <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> - <META NAME="GENERATOR" CONTENT="Mozilla/4.01 [en] (Win95; I) [Netscape]"> - <TITLE>Hewlett Packard 58503A GPS Receiver -</TITLE> -</HEAD> -<BODY> - -<H3> -Hewlett Packard 58503A GPS Receiver</H3> - -<HR> -<H4> -Synopsis</H4> -Address: 127.127.26.<I>u</I> -<BR>Reference ID: <TT>GPS</TT> -<BR>Driver ID: <TT>GPS_HP</TT> -<BR>Serial Port: <TT>/dev/hpgps<I>u</I></TT>; 9600 baud, 8-bits, no parity -<H4> -Description</H4> -This driver supports the HP 58503A Time and Frequency Reference Receiver. -It uses HP SmartClock (TM) to implement an Enhanced GPS receiver. The receiver -accuracy when locked to GPS in normal operation is better than 1 usec. -The accuracy when operating in holdover is typically better than 10 us -per day. It receiver should be operated with factory default settings. -Initial driver operation: expects the receiver to be already locked to -GPS, configured and able to output timecode format 2 messages. - -<P>The driver uses the poll sequence <TT>:PTIME:TCODE?</TT> to get a response -from the receiver. The receiver responds with a timecode string of ASCII -printing characters, followed by a <cr><lf>, followed by a prompt -string issued by the receiver, in the following format: -<PRE>T#yyyymmddhhmmssMFLRVcc<cr><lf></PRE> -The driver processes the response at the <cr> and <lf><cr> and -<lf>, so what the driver sees is the prompt from the previous poll, -followed by this timecode. The prompt from the current poll is (usually) -left unread until the next poll. So (except on the very first poll) the -driver sees this: -<PRE>T#yyyymmddhhmmssMFLRVcc<cr><lf></PRE> -The T is the on-time character, at 980 msec. before the next 1PPS edge. -The # is the timecode format type. We look for format 2. Without any of -the CLK or PPS stuff, then, the receiver buffer timestamp at the <cr>y -is 24 characters later, which is about 25 msec. at 9600 bps, so the first -approximation for fudge time1 is nominally -0.955 seconds. This number -probably needs adjusting for each machine / OS type, so far: -0.955000 -on an HP 9000 Model 712/80 HP-UX 9.05 -0.953175 on an HP 9000 Model 370 -HP-UX 9.10 -<H4> -Fudge Factors</H4> - -<DL> -<DT> -<TT>time1 <I>time</I></TT></DT> - -<DD> -Specifies the time offset calibration factor, in seconds and fraction, -with default 0.0.</DD> - -<DT> -<TT>time2 <I>time</I></TT></DT> - -<DD> -Not used by this driver.</DD> - -<DT> -<TT>stratum <I>number</I></TT></DT> - -<DD> -Specifies the driver stratum, in decimal from 0 to 15, with default 0.</DD> - -<DT> -<TT>refid <I>string</I></TT></DT> - -<DD> -Specifies the driver reference identifier, an ASCII string from one to -four characters, with default <TT>GPS</TT>.</DD> - -<DT> -<TT>flag1 0 | 1</TT></DT> - -<DD> -Not used by this driver.</DD> - -<DT> -<TT>flag2 0 | 1</TT></DT> - -<DD> -Not used by this driver.</DD> - -<DT> -<TT>flag3 0 | 1</TT></DT> - -<DD> -Not used by this driver.</DD> - -<DT> -<TT>flag4 0 | 1</TT></DT> - -<DD> -Not used by this driver.</DD> -</DL> - -<HR> -<ADDRESS> -David L. Mills (mills@udel.edu)</ADDRESS> - -</BODY> -</HTML> |