MVPHD-24 Operations Manual Version 0.9.0 page 29 of 74
October 26, 2020
TIMING:
This button is used to access menus for output timing.
Menu:
Genlock Source:
This menu selects the source to be used for locking the output timing of the MVPHD-24.
[Genlock BNC] This selection locks the output timing to a reference signal connected to the rear
panel’s
GENLOCK LOOP
BNCs. The reference may be composite sync,
black-burst, tri-level sync, TTL vertical drive, or a TTL frame square wave. The
MVPHD-24 automatically detects the type of signal present.
The Genlock loop input provides a high impedance “loop through” connection
for an external sync reference. The reference signal may be daisy chained through
several MVPHD-24s, or other equipment requiring external sync. If the unit is
the last piece of equipment in the chain, then the unused BNC will require a
termination.
[ SDI Input ] This selection locks the output timing to a serial digital signal at the SDI input.
This allows the MVPHD-24 to lock to a HD camera’s SDI output signal.
Note, the SDI input must be either a 270 MHz (SD), 1.485GHz (HD), or 2.97GHz
(3G) serial digital signal.
[ Free Run ] This selection ignores all genlock input references, and free-runs the output timing
of the MVPHD-24 (see
Free Run Freq Adjust
menu below).
Use the Knob (rotate) or +/- buttons to select the desired genlock source.
Once the genlock source is selected, push on the knob to enter selection.
If a signal is not present at the selected source, the MVPHD-24 automatically goes into free-run.
See the
Genlock Status
menu below for details of the selected signal.
The following controls adjust the timing of the video frame synchronizer. Because of internal processing
delays (approx. 3+ lines), a phase setting of zero clocks / zero lines will guarantee one frame of delay in
the synchronizer.
Menu:
Vert Phase:
This menu is used to vary the vertical phase of all the output signals from the MVPHD-24
(including the sync reference outputs). When genlocked, this phase adjustment is with respect
to the genlock source. This menu indicates the phase in both degrees, and lines of video.
See chapter 5 for tips on using this feature.
Use the Knob or +/- buttons to adjust.
Rotating Knob increments by 1 line. Pr or – button increments by 5 lines.
Holding down + or – button auto-increments by 10 lines.
Menu:
Horiz Phase:
This menu is used to vary the horizontal phase of all the output signals from the MVPHD-24
(including the sync reference outputs). When genlocked, this phase adjustment is with respect to
the genlock source. This menu indicates the phase in both micro-seconds, and video pixel clocks.
Use the Knob or +/- buttons to adjust.
Rotating Knob increments by 1 clock. Pr or – button increments by 50 clocks.
Menu:
Subcarrier Phase:
This menu is used to vary the subcarrier phase of the composite and Y/C outputs. When
genlocked, this phase adjustment is with respect to the genlock source. This menu indicates
the phase in degrees.
Use the Knob or +/- buttons to adjust.
