Operating Basics
ECO 422
2–3
Table 2–1: Factory Settings of Channel Configuration Switches (S1 – S11)
Output # /
Switch #
Setting
(see above)
Attenuation
(set with Sx–8)
On Off
Type of Signal Attached
1 / S1
1 or 2
p
Black Burst
2 / S2
1 or 2
p
Black Burst
3 / S3
1 or 2
p
Black Burst
4 / S4
1 or 2
p
Black Burst
5 / S5
1 or 2
p
Black Burst
6 / S6
1 or 2
p
Black Burst
7 / S7
4
p
Serial Digital Video (Component)
8 / S8
4
p
Serial Digital Video (Component)
9 / S9
4
p
Serial Digital Video (Component)
10 / S10
5
p
Serial Digital Audio
11 / S11
5
p
Serial Digital Audio
User Configuration Switch (S14–8) –closed– –Normal–
Attenuation.
Attenuation allows larger signals to have their signal level checked.
The attenuator adds about 14 dB (x5) attenuation to the signal level being
checked. This has no effect on the level of the output signal and only extends the
range of the check circuitry. Use this in conjunction with large H sync pulses to
increase the accuracy on the level check. Only use this switch in conjunction
with the User Defined Levels.
User Configuration Switch (S14 – 8).
This switch determines how the ECO 422
responds to faulty signals –– either Normal or Override.
For Normal operation, the user cannot switch to a bad signal whether the
instrument is in manual or auto switch mode. For example, the ECO 422 is in
manual mode and the Primary signal is bad, while the Backup signal is good. If
the user presses the Sync Source button, the output will be the Backup signal. If
the user presses the Sync Source button again, the output continues to be the
Backup signal. It will not change to Primary until the signal is good and the fault
indicator is reset.
In the Override mode, the user can manually switch to a “bad” signal, with Auto
mode disabled.
Reference Level Adjustments R266 and R265.
These two adjustments set the
reference level for the two user-defined signal options. Select these levels with
DIPs 6 (R266) and 7 (R265) of the Channel Configuration switches. These allow
Summary of Contents for ECO 422
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Page 14: ...General Safety Summary viii ECO 422 ...
Page 16: ...Service Safety Summary x ECO 422 ...
Page 17: ...Getting Started ...
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Page 31: ...Operating Basics ...
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Page 41: ...Operating Basics ECO 422 2 9 Figure 2 6 Setup for Adjusting R265 the User Level for SX 7 ...
Page 43: ...Specifications ...
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Page 53: ...Theory of Operation ...
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Page 62: ...Theory of Operation 4 8 ECO 422 ...
Page 63: ...Performance Verification ...
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Page 84: ...Performance Verification 5 20 ECO 422 ...
Page 85: ...Adjustment Procedure ...
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Page 88: ...Adjustment Procedure 6 2 ECO 422 ...
Page 89: ...Maintenance ...
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Page 101: ...Options ...
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Page 104: ...Options 8 2 ECO 422 ...
Page 105: ...Replaceable Electrical Parts ...
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Page 140: ...Replaceable Electrical Parts 9 34 ECO 422 ...
Page 141: ...Diagrams Circuit Board Illustrations ...
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Page 147: ... ECO 422 Changeover Unit FRONT PANEL 1 ...
Page 148: ...ECO 422 ...
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Page 174: ...Replaceable Mechanical Parts 11 6 ECO 422 ...
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Page 176: ...ECO 422 A1 FIG 1 EXPLODED VIEW A2 A3 A4 ...
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