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I. SYNC INPUTS
There are three Sync signal inputs for use with RGB sources:
1. SYNC-ON-GREEN (SOG) - - this is through the Green
video input BNC jack, terminated 75 ohms.
2. HORIZONTAL/COMPOSITE (H / Comp) - - through a BNC
jack on the 9-1515 Combo module, software switchable
termination 2K/75 ohms.
3. VERTICAL (V) - - through a BNC jack on the 9-1515
Combo module, software switchable termination 2K/75
ohms.
II. COMPATIBILITY
1. SYNC-ON-GREEN - - negative-going sync on Green video
input, either EIA or SMPTE (HD) spec compatible.
2. HORIZONTAL/COMPOSITE
a. Analog/TTL Mode - - TTL-level computer syncs (VGA,
Macintosh), NTSC/PAL/SECAM studio/commer-
cial horizontal/composite analog sync.
b. Special Composite Mode - - NTSC/PAL/SECAM or
SMPTE HD studio/commercial negative
composite or tri-level analog sync (Black Video).
3. VERTICAL - - TTL-level computer syncs (VGA,
Macintosh), NTSC/PAL/SECAM studio/commercial nega-
tive vertical analog sync.
III. FREQUENCY RANGE
1. SYNC-ON-GREEN - - Horizontal component: 15kHz to
40kHz. Vertical component: 50 to 100 Hz.
2. HORIZONTAL/COMPOSITE - - Horizontal component:
15kHz to 40kHz. Vertical component: 50 to 100 Hz.
3. VERTICAL - - 50 to 100 Hz.
IV. AMPLITUDE
1. SYNC-ON-GREEN - - Sync portion: 300mV, +/- 150mV.
2. HORIZONTAL/COMPOSITE
a. Analog/TTL Mode - - 0.7Vp-p to 5Vp-p.
b. Special Composite Mode - - 300mV, +/- 150mV.
3. VERTICAL - - 0.7Vp-p to 5Vp-p.
V. POLARITY
1. SYNC-ON-GREEN - - negative.
2. HORIZONTAL/COMPOSITE
a. Analog/TTL Mode - - positive or negative.
b. Special Composite Mode - - negative.
3. VERTICAL - - positive or negative.
VI. PULSE WIDTH OR DUTY CYCLE
1. SYNC-ON-GREEN - - Minimum sync pulse width = 400nS.
2. HORIZONTAL/COMPOSITE
a. Analog/TTL Mode. - - Max duty cycle of sync pulse
(Vsync in = 0.7Vp-p) = 15% Max duty cycle of sync
pulse (Vsync in 1.4Vp-p) = 30%.
b. Special Composite Mode - - Minimum sync pulse
width = 400nS.
3. VERTICAL - - Max duty cycle of sync pulse (Vsync in =
0.7Vp-p) = 15% Max duty cycle of sync pulse (Vsync in
1.4Vp-p) = 30%.
3276-A
SPECIFICATIONS FOR RGB SYNC INPUTS
Version 2.1 December 21, 1995
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