KROMA
TELECOM
PROFESSIONAL MONITORS BM5309
BM5309
16
The adjustment procedure informs about several events that don´t allow carry out
it correctly. The messages are the following:
•
"CANNOT
CONNECT":
•
"UNCOHERENT
DATA":
•
"Not CONVERGED": it could be originated by different causes, the most
common is the input level of the signal. Check the termination switch (HP/75
Ω
)
The conclusion reached are:
•
White D 6500
±
200 ºK or another optional (see SEL CRT/REF)
•
0.5 NIT for window signal with 10% APL
•
90 NITS for window signal with 100% APL
6.3.2. CRT/REF option
With this option you will select a group of parameters as reference for an Auto Set
Up, or to specify the group that will be modified when you select the option LEARN
PROBE.
With the CAL key, you will select in cyclical mode, one of the 4 groups of
parameters. Three of these are identified with the model of a C.R.T. and one of
them has been reserved for the user.
6.3.3. LEARN PROBE option
With this option you will store some characteristics of colorimetry in the meter in
order to adjust other monitors in the same conditions. For example, if the
conditions of brightness of your study modify the subjective perception of the
colour of the monitor, or you prefer a tendency toward a determined colour; then,
you modify manually the characteristics of a monitor in order to take it as
reference. Next, you utilize one of the four groups of parameters with the option
CRT/ REF, with preference, the group of user (USER) and select the option
LEARN PROBE with the key CAL.
The operation of this option is similar to AUTO SET UP. You will have connected a
DG5400 generator with specific
4
“patterns”, in order to make the learning.
Likewise, it will request you a technical password and will also to put the
measuring probe on the screen and press the CAL key in order to start the process
or ESC in order to stop it. Due to the risk of data loss
the operation, this should
only be carried out for technical personnel.
This operation is longer than the AUTO SET UP and it is essential don't move the
probe during the process.
4
Three windows 100% red, green and blue.
