CTX PV722E, Service Manual

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Service Manual
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PV722i /PV722E
-18-
3.3 Plug & Play
VESA DDC 2B, DVI support DDC 2B+ standard
DDC 2B data transmission only for I
2
C BUS
interface card.
3.4 Scanning characteristics
VGA DVI
Horizontal frequency 30KHz to 80KHz 30KHz to 66KHz
Refresh rate 59Hz to 75Hz 59Hz to 61Hz
3.5 USB 2.0 Module (AS0USB-001)
The USB 2.0 Hub can detect the status of Host Computer (
USB V
BUS
power) to
turn on the USB Hub
or turn off it, to reach the purpose of saving power.
It have three conditions to active the USB Hub power(the green light will turn on).
1) 60W adaptor power on and plug-in the USB 2.0 Hub.
2) Plug-in the USB cable between host computer and USB 2.0 Hub.
3) Turn on PC power (then PC start boot up and into Windows Platform properly.)
3.5.1 Input power
12V (Self power mode only)
3.5.2 Down stream port output power 5V
±
5% ( > 4.75V, < 5.25V)
3.5.3 Overcurrent detection :
0.6 to 1.25A ( 0.9A typ.) (The USB standard defines the max.
current is 0.5A for each port)
3.5.4
Bus transation : High speed(480Mbps), full speed(12Mbps), low
speed(1.5Mbps)
3.6 Audio Module(LKC17SS2CC03)
2.2.1 Input Level : 1Vrms(typ),2Vrms(max)
2.2.2 Output Power : 1W * 2 (10% THD,1KHz)
2.2.3 Total Harmonic Distortion (THD)…..0.3%(0.5W*2, 1KHz)
2.2.4 Frequency Response
±
3dB : 330 ~ 20KHz