External Sync (Be-Ir21) - Hitachi BE-IR20 Operation Manual

10. External sync (BE-IR21)

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