Tektronix Grass Valley 4000, Installation And Service

Page: 93 / 286

2-59
Installation
Delegate Logic Switch
— On the 3-RU panel, the DEL LOGIC switch controls the
functioning of the aux buses that are not selected:
DEL LOGIC Switch OFF: If a BUS ENABLE switch is OFF, the associated Delegate
button on the panel can be selected and the source button selected for that bus will
light but cannot be changed.
DEL LOGIC Switch ON: The Delegate button on the panel cannot be selected if its
BUS ENABLE switch is OFF.
NOTE:
The DEL LOGIC switch is not used on the 1-RU and 2-RU panels.
Force High Tally Switch
—On the 1-RU panel, the FORCE HIGH TALLY switch
forces the ON AIR lamp on at all times.
On the 2-RU and 3-RU panels, the FORCE HIGH TALLY switch disables the low
tally condition. The lamps will be on bright whether the bus is on air or not.
Test Mode Switches
—For normal operation set all four TEST MODE switches to
OFF.
Remote Aux Panel Lens Chip Installation—
The primary crosspoint pushbuttons on
the 2-RU and 3-RU control panels can be labeled as desired. An envelope
containing a set of printed lens chips is shipped with the control panel. Make sure
not to throw away the lens chips inadvertently.
To change a lens chip, follow the instructions given earlier in the control panel
installation portion called “Pushbutton Lens Chip Installation” (see
page 2-14 ).
Frame Store
The Frame Store option allows storage and retrieval of images at a 10-bit
resolution. Up to four 2-field pages can be stored in both the video store and the
key store. Video and Key inputs may be frozen together or independently. The
images can later be read with either one- or two-field mode. Either replication or
interpolation may be used if one field readout is selected.
The Frame Store option consists of a single circuit board (064813) with a mezzanine
board (064823) mounted on it. To install the Frame Store option, follow the
instructions below.
1. Install the Frame Store Module in either Slot B2 (for Model 4000-2) or slot B15
(for Model 4000-3) of the front B Bay (refer to
Figure 2-25 or Figure 2-26 ). Be
sure the module is oriented correctly. Carefully slide the module in, avoiding
contact with the modules on either side. Be sure to match the rear connections
before applying pressure to seat the module.
To view the direct switcher output for Frame Store video and key images, you
must install an optional Serial Output Module in Slot D1 (for all models shipped
after 1/96) (see
Figure 2-28 ).