Electric Specifications; Deflections; Signal Input; Video Performance - Mitsubishi DPLUS 74SB -BKA Service Manual

3. Electric Specifications

3.1 Deflections

Scanning Frequency
Back Porch
Horizontal
Blanking
H-sync Width
Scanning frequency
V-sync + V-back Porch
Vertical
V-sync Width
V-Total Line

3.2 Signal Input

Video Input Signal
Sync. Input Signal
Video Input Impedance
Sync. Input Impedance
Signal Level

3.3 Video Performance

Video Clock Frequency
Pulse Rise and Fall time
The rise and fall time of the input video signal is 2.0nsec or less.
The pulse rise or fall time is determined using the formula :
= −
2
Ta Tm (
Where : Ta = Amplifier rise / fall time
Tm = Measured rise / fall time
Ts = Input signal rise / fall time
Tp = Probe effect on rise / fall time = 2.2 x Rl x Cp
Rl
Cp = Total probe capacitance (F)
Tsc= Scope rise / fall time = 0.35 / Scope bandwidth (MHz)
R.G.B analog
External composite sync :TTL (N or P)
External HD/VD separate sync :TTL (N or P)
75 ohm to ground
2.2k ohm to grand or more.
Video signal : 0.70V p-p ±5%
Composite sync :TTL level
Separate H/V-sync :TTL level
120MHz (Input signal)
9.0nsec (typ.) 10 to 90% at 40Vp-p
+ +
2 2 2
Ts Tp Tsc )
= Amplifier output resistance (ohm)
30.0 – 70.0 kHz
≥ 0.2 µsec
≥ 3.6 µsec
≥ 0.8 µsec
50 – 120 Hz
≥ 500 µsec
2H ≤ Vs ≤ 8H
≥ 256H+ V-sync Width
5-7