Service Manual - AMS Neve

SynchroNet ES/2 Service Manual
MACHINE PARAMETERS
play command. Any overshoot in either of these cases causes an untidy and unacceptable
performance. These parameters are best set in conjunction with CWRAMP described earlier.
ULTIME $1057/8
display : ULTIME
When a video machine is chasing or locating it will attempt to unlace the tape and perform an
unlaced wind if the difference to be made up is greater than this value. The ability to lace or unlace
the tape is reflected in the command bytes ‘LACE’ $108d and ‘UNLACE’ $108e. This value is in
BCD minutes and seconds (i.e. only use digits in the range 0-9), minutes in $1057 and seconds in
$1058.
LTIME $1059/a
display : LTIME
When a video machine is locating or chasing and the tape has previously been unlaced as
described above then it will attempt to reduce the difference below this value before it will lace the
tape up again. Conditions apply as for ULTIME, it is also BCD minutes and seconds (i.e. only use
digits in the range 0-9).
PRKWND $105b/c
During a chase or locate operation when the machine gets within the toggle window it will use this
speed to toggle into park ahead of the master reference. It is in IS Format. If this parameter is set to
0 then the value of MINWND will be used for this operation.
PRKJOG $105d
Maximum number of attempts to get within PRKERR (1052) of the locate target. When parameter is
set to 0 the default value of 3 is used.
SVOWIN $105e
This sets the number of frames away from lock that the machine must be before the servo system
causes a chase operation to be started in order to rejoin the timeline. If this parameter is set to zero
then a default value of 80 frames (50hex or 3secs 5frames @25fps) is used. Units are binary
frames
RESERVED $105f
Issue 1 3:15