Broadcast DPS ES-2200, Руководство оператора

Страница: 19 / 70

18
Timing
The SYSTEM TIMING or GENLOCK controls are used to modify the timing of the video outputs from the installed
TBC cards so that correct system timing is maintained when the unit is used in conjunction with other video processing
equipment. When a reference video signal is connected to the selected (installed) TBC card reference video input, the
outputs from that card would nominally be co-timed with this signal. Using the GENLOCK controls, the installed card
output video may be shifted with respect to the reference video input.
C – F (GENLOCK TIMING)
This button enables the horizontal genlock timing to be changed via the shaft encoder. Press the button once and the F
(fine) LED comes on. Press the button again and the C (coarse) LED lights up. When in COARSE mode, the shaft
encoder enables the video output signal to be moved in steps of 270 nsec, or 360 degrees. A flashing C LED indicates
that the selected unit is not genlocked.
When the F (fine) LED is lit, the fine genlock timing can be changed via the shaft encoder. Fine genlock timing moves
the output video in steps of 0.55 nsec or 0.70 degrees. A flashing subcarrier F LED indicates that the selected unit is not
genlocked.
To disable accidental genlock timing adjustments or to terminate the input reference signal, see CONFIGURATION
OPTIONS later in this chapter. If genlock adjust is disabled, no timing adjustments can be made until it is re-enabled.
This button can be used to adjust the Y/C Horizontal Delay. To do so, press and hold the C-F button down until both its
LEDs flash. Then rotate the shaft encoder to adjust the Y/C delay. This function affects only the TBC IV card.
H-POS
This button enables the horizontal position of the video signal to be ad/- 1 us by using the shaft encoder.
This button can be used to adjust the Y/C Vertical Delay. To do so, press and hold the H POS button down until its
LEDs flash. Then rotate the shaft encoder and set the Bar graph LED to one of four positions. This function affects
only the TBC IV card.
Input
When the ES-2200 is configured for a TBC IV (or TBC III) card, the INPUT SELECT button functions as an
NTSC/S-VID select button as described below.
NTSC
If the installed card is a TBC card, then this button selects COMPOSITE input mode. If there is no video input at the
selected TBC card, the NTSC LED will flash.
S-VHS
If the installed card is a TBC card, this button selects S-Video input mode for use with S-VHS or HI-8 VCRs. If there is
no input at the selected TBC card, the SVHS LED will flash.