Ikegami HTM-1917R Operation Manual page 10

BFS (Beam feedback system)
By adopting a BFS circuit for detecting CRT cath-
ode current, stable black balance can be obtained
for a long period of time even when the CRT emis-
sion changes.
Built-in 3-line comb filter (NTSC)
With NTSC analog composite signal input, the de-
coder module which includes a 3-line comb filter cir-
cuit realizes a high resolution picture by the digital
delay method, using 8 fsc clock.
The Faroudja™ format 3-line comb filter used for
Y/C separation reproduces high picture quality im-
ages with minimum cross color and cross luminance.
* Requires the optional NTSC decoder module DE-
801.
Rich variety of internal test signals
The monitor is equipped with a variety of useful
test signals for adjustments such as crosshatch, flat
field (50%), window (100%), character, and staircase
waveform with pluge.
The format of the test signal can also be selected
from HDTV:1080i/1035i/720p, SDTV:480i/575i by
MENU settings.
Built-in markers
4:3 markers can be displayed on 16:9 images.
80%, 88%, 90%, 93%, 100% and other markers can
be displayed for the 4:3/16:9 aspects in NTSC.
Shadow function
While displaying pictures with an aspect ratio of 16:9,
the monitor displays 4:3, 13:9, and 14:9 image areas
and creates a shadow (the shadow contrast is set up to
about 40%) at the other image portion. This monitor is
capable of viewing 4:3, 13:9, and 14:9 images
simultaneously while monitoring 16:9 images.
As this shadow function can be turned on and off by
remote control, prompt switching is realized.
Degauss timer function
The degauss timer function sets the timer so that
auto degauss operations are performed automati-
cally about 4 seconds after the power is turned ON.
The timer can be set for each monitor at intervals
of 0.5 seconds from 0 to 4.5 seconds.
This minimizes the rush current flowing when the
power of a system comprised of multiple monitors
is turned on at once.
Structure with enhanced maintenance and
expendability
The signal processing module, including optional
modules, are of the plug-in type which can be easily
disconnected and connected from the back without the
need to remove any cover, thus allowing easy mainte-
nance.
Besides the DKM-511B multi-format SDI module
and analog component signal (YPbPr) module, optional
modules, can be added for expansion.
Use of high performance in-line gun CRT
A high performance in-line gun CRT of 0.25mm dot
mask pitch is adopted to produce fine images with re-
duced reflection of external light.
A black matrix screen realizes images of high con-
trast with enhanced black purity.
Luminance compensation function by
image size
In the case of the CRT monitor, when the image
size is reduced from normal to under-scan or from 4:3
to 16:9 scan image size, the current density increases
to cause a change of luminance. This monitor per-
forms luminance compensation so that the luminance
remains constant even when any of the four image
sizes is changed.
HD 4:3 SCAN function
This function enlarges 4:3 image area only and dis-
plays it in full screen (aspect ratio 4:3) during the
HDTV mode, thus allowing real-time monitoring of
the image that would be obtained after down-convert-
ing to 4:3 aspect ratio of SDTV. During the HD 4:3
SCAN, the size of the 4:3 image area is magnified to
the size comparable to the size of 24-inch 16:9 CRT
screen.
High voltage regulation circuit
High voltage regulation circuit controls the pulse
for each scan line, thus realizing the high voltage sta-
bility of ±0.5%. This regulation circuit ensures quicker
response and minimal distortion in high luminance,
resulting in an image of high stability.
Auto setup function
Use of the auto setup probe ASP-100 (option) (under
development) enables automatic adjustment of the color
temperature easily.
When the operator sets the desired color tempera-
ture to the monitor, any number of monitors can be
automatically adjusted to this color temperature.
* The ASP-80 is also applicable.
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