1 – 9
040 7448 329657 (04.97) PC-SW 4.5
C H A P T E R 1 : S Y S T E M D E S C R I P T I O N
1.2
System concept
All plug-in units (including the power supply) of the TITAN videocodec are ac-
commodated in a housing (see FIGURE 1.1) with the dimensions 449 mm
×
133 mm (3 U)
×
395 mm (W
×
H
×
D). TITAN can be installed as a table top
unit or, using mounting brackets, in 19" or ETSI racks. Sufficient ventilation is
ensured by ventilation holes located at the front and side of the housing.
The TITAN videocodec can be operated with AC voltages between 90 and
253 V (nominal voltage range 100 to 240 V) without the need for switching.
The mains frequency can also vary between 45 and 65 Hz. These tolerance
ranges mean that the codec can be used in almost every country. The maxi-
mum power consumption is approx. 170 VA. Two temperature-controlled fans
have been built in for cooling purposes. Since the fans’ speeds depend on the
temperature, they generate a minimum of noise.
In addition to the slot for the power supply, the TITAN videocodec has four
slots for the following plug-in units: Graphics Codec, Motion Video Codec, Au-
dio Codec and Interface Unit. The equipment also has a keypad and two-line
display, both of which are located on the front panel. FIGURE 1.1 shows a
view of the closed housing and FIGURE 1.2 shows a view of the opened unit.
In the following sections, the functions of the plug-in units are described in
more detail.
FIGURE 1.2
VIEW OF THE OPENED HOUSING OF THE TITAN VIDEOCODEC
1.2.1
Motion Video Codec
The motion video codec of the TITAN videocodec meets the requirements of
ITU-T Recommendation H.261. Both picture formats specified in H.261: QCIF
(Quarter Common Intermediate Format) and FCIF (Full Common Interme-
diate Format) have been implemented. These formats are supported up to the
maximum frame rate of 30 Hz.
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Содержание Titan
Страница 1: ...TITAN Videocodec ISDN Videocodec Operator Manual ...
Страница 2: ...T I T A N V I D E O C O D E C I S D N V I D E O C O D E C O P E R A T O R M A N U A L ...
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