How to achieve the best results from your Genlock and Computer combination.


1.

Adjust  the  preferences  on your Amiga to ensure that the chroma is set to
the correct levels on a Vectorscope.  If the chroma level is oversaturated,
the result can be bleeding of colour, especially in red.

2.

Always  draw  horizontal  lines that are at least TWO pixels high to reduce
flicker  and  create lines that can be recorded cleanly.  On some recorders
eg.VHS  -  BETA,  a  fine  line will not be recorded at all although it may
appear on the monitor.

3.

Stay  away  from  some colours.  Certain colour hues DO NOT record well, an
example  being  Lime  Green  or highly saturated Blue.  Try a new colour on
tape  first.   Try  limiting  your  Red, Green and Blue levels to 75-80% of
maximum saturation.

4.

NEVER try to format a disk with the genlock connected to the computer.  The
genlock derives its timing from the incoming video signal and the action of
genlocking introduces a certain amount of phase jitter onto the clock drive
signal to the computer.  This jitter cannot be tolerated during formatting.

5.

Always  ensure  that  the  genlock  video  input  is both stable and of the
correct  level.  The action of "genlocking" by its name implies the locking
of  two  devices together.  This requires the second unit to slave from the
first,  therefore any errors or discontinuities in the original signal will
be  reproduced  faithfully  (or attempted to be) by the slave unit.  If the
video  input  level  is too low the slave unit (genlock) cannot extract the
required signals to lock the computer or reproduce accurate colour.  If the
video  input  is unstable, that is, shifting in time or tracking errors off
tape,  the genlock will try to follow the irregularities.  If its tolerance
is  exceeded  then  horizontal movement, colour loss or vertical distortion
may  result.  Ideally, video fed to the Genlock should come from the output
of a Time Base Corrector.

6.

Picture Quality.  Your output from the genlock can never be any better than
the  signal  you  feed into it.  The genlock passes the input signal to the
output, it does not reprocess the video.  Make sure you do not use inferior
quality tapes or multigeneration copies as your signal source.

7.

RGB  monitors  cannot  accurately  portray  the  quality  of  final results
recorded  to  tape.  When you have created an image using your RGB monitor,
do  a  test  recording of it through the genlock.  Then on playback, assess
the results.  After some practice, professional results can be obtained.
 

                        NERIKI TELEVISION PRODUCTS
                    BROADCAST QUALITY VIDEO ELECTRONICS
               PROUDLY AUSTRALIAN DESIGNED AND MANUFACTURED
                BY FORDRAY ELECTRONIC DEVELOPMENTS PTY LTD
                                SINCE 1987
