Rf Antenna Inputs; Pvr (Personal Video Recorder); Dlp™ Fundamentals - Mitsubishi Electric Digital Light Processing WD-52525 Technical Training Manual

Figure 1-3 shows the Rear Panel location of the HDMI
input socket and the CableCARD™ Slot.

RF Antenna Inputs

Note in Figure 1-3 there are only two RF Antenna In-
puts, instead of three. Signal input to ANT 1 is ampli-
fied and directed to both the Sub and Main Tuners.
The Main Tuner can process either NTSC or ATSC
(HD) signals. The Sub Tuner processes only NTSC
signals, mainly as a sub picture source.
The ANT 2 input connects directly through the Antenna
Relay, to the Main Tuner. Figure 1-4 is a simplified sche-
matic of the RF Antenna Splitter. The OOB (Out of
Band) Tuner is used when cable information and On
Screen Channel Guides are available.

PVR (Personal Video Recorder)

This feature is only available on V26++ models. It uti-
lizes a 120 GB Hard Drive (HDD) to record digital sig-
nals from either the Antenna Inputs or 1394 Inputs:
• SD digital channels
• HD digital channels
• 1394 digital signals.
It can also record analog 480i signals from the:
• Antenna Inputs
• External Composite Video Inputs
• External S-Video Inputs
Analog 480i signals are converted to digital and then
MPEG-2 compressed before recording on the HDD.
The PVR also features "TV Pause" and up to 30 min-
utes of the current program is recorded. This enable a
rewind feature for up to 30 minutes and the TV Pause
feature..

DLP™ Fundamentals

Although the basic principles have not changed, a quick
review of Digital Light Processing™ system may be in
order. Figure 1-5 illustrates the Overall DLP™ Sys-
tem.
A light source is directed through a RGB Color Filter
wheel. and is directed to the reflective surface on a
DMD™ IC (Digital Micromirror Device™). Light from
1-3