External Synchronization - Hitachi KP-M1E/K Operation Manual

7. External synchronization (2:1 interlaced)
When operating the camera by external drives signals, connect sync drive signals (HD, VD) to the
DC IN/SYNC connector, then the mode is automatically switched from the internal sync mode to the
external sync mode.
!
Horizontal and vertical drive signal inputs
EIA: f(H) = 15.734 kHz ±1 %
HD
CCIR: f(H) = 15.625 kHz ±1 %
EIA: f(V) = 59.94 Hz (f(V) = f(H) ÷ 262.5)
VD
CCIR: f(V) = 50 Hz (f(V) = f(H) ÷ 312.5)
!
Input level
HD 2 to 6 Vp-p negative
VD 2 to 6 Vp-p negative
!
Input impedance
! Drive signal input waveform
! Horizontal drive signal (HD)
T=1/f(H)
Approx. 6.7µs
! HD and VD phase relationship
VD
HD
KP-M1A
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1 kΩ
2〜6Vp-p
Set HD and VD fallings edges to the same phase (0 ± 5 µs)
! Vertical drive signal (VD)
T=1/f(V)
Approx. 0.6ms(EIA); 0.5ms(CCIR)
2〜6Vp-p
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