2) external svnc frequency range, 3) using the unit with external svnc signal, 1) h (horizontal) phase adjustment – Toshiba IK - TU51CU User Manual

Page 41: 2) sc (sub carrier) phase adjustment

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(2) External svnc frequency range

(External sync with VBS, SYNC)

For NTSC standard frequency : Within ±50ppm

(External sync with HD, VD)

For EIA standard frequency : Within ±1% (at horizontal sync frequency)

(3) Using the unit with external svnc signal

Adjust H (horizontal) phase and SC (sub carrier) phase if necessary to match the output of multiple cameras.

When adjusting H (horizontal) phase and SC (sub carrier) phase, refer to the item “7.2 (6) SYNC”.

(3. 1) H (horizontal) phase adjustment

Observe the external sync signal and the video signal output

waveform of the unit with a dual trace oscilloscope, and adjust

H phase so that the H phases match.

Match

the phase.

External

Sync, signal

Camera
Video output

(3. 2) SC (Sub carrier) phase adjustment

When using the unit with external sync, the sub carrier signal phase of the video output signal of the unit can

be adjusted. Perform a coarse adjustment for Oo and 180o in SC 0/180 and then perform a fine adjustment

in SC PHASE. Using a vector scope for the phase adjustment will provide more accuracy.