JAI CV-M77 operation manual Input and Output Circuits, Video input, HD and VD input

CV-M77

5.4Input and Output Circuits

In the following schematic diagrams the input and output circuits for video and timing signals are shown. For alternative connections refer to “Internal Switch and Jumper Settings”. Jumper settings are shown as for factory default.

5.4.1Video input

The video output signal is a 75Ω RGB video signal. The signal level is 0.7Vpp. Composite sync. is selectable on the green video signal via software or the internal switch 302-3. The sync. signal level is 0.3Vpp.

+5V

33KB

5.4.2 Trigger input

The trigger input is AC coupled with a flip-flop. The input signal level is 4V ± 2V.

The trigger input impedance is 1.2 kΩ or 75Ω selectable via the internal switch S301-3.

Trigger input

33KB

SC104V

1K8B

SC102V

100KB

75C

S301-3

SC102V

GND

5.4.3HD and VD input

The HD and VD input circuit can be 75Ω terminated via the internal switch S301-1 and S301-2.

The input signal level is 4V ± 2V.

+5V

33KB

HD, VD	SC104V
	1K8B
input	SC102V

5.4.4HD, VD, PCLK, WEN and EEN output The output circuits for these signals are 75Ω complementary emitter followers. The single circuit delivers a TTL signal. The output level ≥ 4 V from 75Ω (no termination).

TTL

75C

S301-1(HD),2(VD)

+5V

10KB

220B

120C

150C

GND

Int VD Int HD PCKL WEN EEN

10KB

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