Mentor XL
7.
LOCK MODE
Genlock: Select Option
Mode
Internal Freerun
External 10 MHz
Manual SC Phasing
Force Strict ScH
Follow Ext. SC Phase
Sync Lock Only
Genlock Loss
Revert to Internal
Use Ext. 10MHz
Use Flywheel
Field Lock
Crash
Line Drop
Standard
525
625
Follow Input
The Genlock (or Generator Lock) settings of the unit (for example, the current Genlock mode and
timing offsets) may be changed as follows. Enter the Genlock menu. The following options are
available:
•
Mode
: changes the basic genlock mode i.e. internal (free run), lock to video etc. See
section 7.1.
•
Genlock Loss
sets the behavior of the unit following loss of the genlock signal. See
section 7.2.
•
Field Lock
: alters the field lock action - instantaneous or slow lock. See section 7.3
•
Input Standard:
See section 7.4.
To enter any of these sub-menus, press
OK
.
The sub-menus are described below.
7.1
G
ENLOCK
-
M
ODE
Select the mode required using the encoder control. Please be aware that the mode will change
immediately each option is selected.
•
Internal Free Run
: sets the unit to be free running, relying on the internal oven oscillator for
stability. The ScH. of the unit will be set to zero.
Note:
the Mentor XL
must
be set to free run
when locking to a GPS signal.
•
External 10MHz
: sets the unit to genlock to the 10MHz input. There will be no fixed phase
relationship with any other units locked to this signal. The ScH. of the unit will be set to zero.
•
Manual SC Phasing
: sets the unit to genlock to the video input. The subcarrier phase offset may
be adjusted as required.
•
Force Strict ScH
: sets the unit to genlock to the video input. The ScH. of the outputs of the unit is
forced to be zero regardless of the genlock input ScH. This is achieved by moving the line timing
with respect to the genlock input until the correct ScH. phase results.
•
Follow External SC Phase
: sets the unit to genlock to the video input. The subcarrier output
phase is set to be the same as the input genlock video.
Page 41 of 84
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