User`s manual

27
VITC
Time
During record, the time code embedded in the video input signal
(VITC) will be recorded on the VITC track of the V1 active
drive. The time code displayed on the V1 front panel and present
on the VITC OUT connector during playback or record is the
same time code recorded on the VITC track, unless a time code
offset has been set. See Section 5.1.4, "Time Code Offset".
(02) Sync from Specifies the sync reference during playback. The V1 is always locked to the
Input when recording. The TOGGLE key will switch between:
Auto The V1 syncs to the SYNC IN input.
Sync In The V1 syncs to the SYNC IN input. Auto and Sync In are
the same.
Input The V1 syncs to the VIDEO IN input.
Input+VCO UncompHDTV ONLY
Sync to input using a VCXO for a low jitter playback.
Internal
The V1 syncs to its own internal clock.
(03) Chase Specifies how the V1 will chase to time code. The TOGGLE key will switch
between:
Off Normal mode of operation when the unit is controlled by a
workstation via the 9 pin connection.
LTC
In this mode the V1 will chase the time code fed through the
TIME CODE INPUT jack. This mode is recommended when
no RS422 9 pin control is present (See Sections 5.2.1 and 5.2.2,
Chase Play.)
MTC
In this mode the V1 will chase the time code fed through the
MIDI IN connector. This mode is recommended when no RS422
9 pin control is present. This feature may no longer be supported
by Doremi Labs.
Serial TC
(RS422)
In this mode the V1 will chase the time code received on the
RS422 connection. This mode requires a special cable and it is
recommended only if no RS422 9 pin control is present. Please
refer to Paragraph 9.4, "Wiring of the RS422 Chase Cable" for
more information on how to build the cable.
Biphase
In this mode the V1 will chase the Biphase input clock signal.
Option Menu (18) "Clks/Frame" should be setup properly in
order to select the clock frequency. Please refer to option menu
(18) at the end of Section 1.2. To use the Biphase mode, the
internal cable of the second RS422 port should be connected to
J3 on the main motherboard. Please refer to Section 5.2.4 for
information.
Note: The Chase to LTC Mode above is different than the OPTION PLAY
Command also referred to as Chase Command (note the difference
between Mode and Command, See Sections 5.2.1 and 5.2.2 for an
explanation of the difference).
(04) Mount If you have more than one drive powered up, this command will mount the drive
with the highest SCSI ID number. Press the TOGGLE key. The message “Are you
sure?” will appear on the LCD screen,
♦ If you want to mount, hold the OPTION key and press the “--“ key again.
♦ If you change your mind and don't want to mount, press ESC.
(05) Input From Specifies which video input of the V1 is active. The TOGGLE key will switch
between COMPOSITE, S-VIDEO, YUV, RGB OR SDI, depending on the
model and options you have installed.