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Section 2 — Installation
Analog Input Connections—
There are two types of optional analog inputs:
component analog inputs (video and key) and external chroma key inputs.
Formats accepted by the system for the analog inputs include the following:
■
RGB (50 or 60 Hz, Setup or No Setup)
■
Beta
■
MII (50 or 60 Hz)
■
EBU/SMPTE
Connect your analog sources to the input options you have installed according to
the module locations in
After power up, you must manually time the input signals to the external analog
reference signal. Refer to the System Timing section (
procedure.
There are gain adjustments for each external analog input. These adjustments have
been set at the factory and should not normally need any adjustment. Adjustments
to these are necessary when an external analog source may have a noticeable
variation. In this case it is advisable to insert a known test signal (such as 100%
color bars) as an input and adjust the gain as desired while observing a waveform
monitor.
Output Signal Connections
Analog Output Module—
The Model 4000 has one standard Analog Output Module
located in Bay C, Slot 17 of the Signal Processor Frame. Analog Program Video (J1-
3) and Switched Preview video (J4-6) output signals from the Analog Output
Module may be connected directly to external analog devices. There are two DAC
Mezzanine boards on the Analog Output Module; one providing the Program
analog output and the other, the Preview analog output. There are ten Color
Difference or RGB formats to choose from as the analog output. Output format is
determined by the customer by setting jumpers on the Analog Output Module and
the mezzanine boards. Gain adjustments must also be made for accurate output
levels.
Analog Output Modules leave the factory set at RGB .700V, No Setup, and narrow
RP125 blanking. To change to a different standard, perform the following steps:
1.
Remove the Analog Output Module from the rear Signal Processor Frame, and
place it on a flat, static-free surface.
2.
Locate jumper J17, on the right hand side of the Analog Output Module
immediately below TP7. Set the jumper setting to the desired blanking width
of the converted video output. When set to RS-170 (wide blanking), blanking
edges are placed as in the RS-170 specifications for 60 Hz systems or for the
CCIR 470-2 recommendation for 50 Hz systems. When it is set to RP-125,
blanking is active from end of active video (EAV) to start of active video (SAV)
data words, inclusive, as described in SMPTE recommended practice RP-125.
3.
Locate jumper J16 on the Analog Output Module, and select the appropriate
Setup (54 mV) or No Setup setting for your system’s desired analog outputs.
Note that this setting is common to both program and preview outputs.
Whatever is chosen for one applies to both.
Summary of Contents for Grass Valley 4000
Page 3: ...iii Tektronix Grass Valley Products P O Box 1114 Grass Valley CA 95945 916 478 3800 ...
Page 4: ...iv Tektronix Grass Valley Products P O Box 1114 Grass Valley CA 95945 916 478 3800 ...
Page 34: ...1 20 Section 1 System Overview ...
Page 138: ...2 104 Section 2 Installation ...
Page 196: ...3 58 Section 3 Functional Description ...
Page 286: ...Index 6 Index ...