STC-A33A
User Guide
8
Rev 1.0
II. Input / Output Signal Specifications
A. Input Signal Specifications
1. External Sync Signals
a. Signal Level:
2.0 to 5.0 Vp-p
b. Termination Impedance:
75 / 10k Ω (Switch Selectable)
c. Signal Polarity:
Negative
d. External HD / VD signal input phase tolerance:
+/- 8.0 µseconds at 30fps
+/- 4.0 µseconds at 60fps
+/- 2.6 µseconds at 90fps
e. Pulse Width:
HD: 3.20 +/- 1 µseconds (Low Level)
VD: 4 to 13H (Low Level)
f. Frequency Tolerance of HD Signal: 15. 734 kHz +/- 1% at 30 fps
31.468 kHz +/- 1% at 60 fps
47.674 kHz +/- 1% at 90 fps
2. Trigger Signal
a. Signal Level: Low Level:
0 to 0.5 Vp-p
High Level:
4.0 to 5.0 Vp-p
b. Termination Impedance:
10k Ω
c. Signal Polarity:
Rising edge (Positive) / Falling edge (Negative)
(Switch Selectable)
d. Pulse Width:
2 µseconds to 250 mseconds
2-5Vp-p
HD
VD
4~5V
0~0.5V