Hitachi Infrared B/W Camera Module BE-IR20 - Manual (Page 11)

10. External sync (BE-IR21)
BE-IR20 / 21 10
Supply sync signals (HD and VD) for BE-IR21 operation. Refer to connection on page 9.
z Horizontal and vertical drive signal inputs
HD EIA: f(H) = 15.734 kHz 1 %
VD EIA: f(V) = 59.94 Hz (f(V) = f(H) 262.5)
z Input
level
HD 4 to 6 Vp-p negative
VD 4 to 6 Vp-p negative
z Input impedance 1 k
HD
VD
T=1/f(H)
z Vertical drive signal (VD) z Horizontal drive signal (HD)
Set HD and VD fallings edges to the same phase (0
±
5
µ
s)
z HD and VD phase relationship
z Drive signal input waveform
Approx. 6.7
µ
s
4 6Vp-p
Approx. 0.6ms
4 6Vp-p
T=1/f(V)