Performance Verification
5–16
ECO 422
Press Reset.
CHECK – that there are no errors shown for either the Primary or Backup
ECO 422 sync sources.
Set the ECO 422 to “Backup” Sync Source and Auto Switch “Switch on
Fault.”
Add attenuation, 0.5 dB at a time, to the Backup input signal until the signal
source switches to Primary.
Press the Reset button on the front panel and try to return the signal source
to Backup.
CHECK – that the Backup signal still shows an error and automatically
switches back to Primary. If the ECO 422 does not continue to show the
Backup signal in error after the reset, continue adding attenuation until the
Backup signal switches to Primary again.
Note the attenuation of the step attenuator.
CHECK – that the ECO switches between 2 and 5 dB down.
12. Check Serial Digital Video (Composite) for Channels 2 through 11
Switch between 2 and 5 dB down from nominal
Repeat the previous two procedures for Channels 2 through 11 of the
ECO 422. Move the cables from Channel 1 to the channel under test.
Replace the switch setting for S1 as given in the following table.
Channel No.
Switch No.
2
S2
3
S3
4
S4
5
S5
6
S6
7
S7
8
S8
9
S9
10
S10
11
S11
13. Serial Digital Audio Check for Channel 1 Primary
Switch between 2 and 4 dB down from nominal
Connect the equipment as shown in Figure 5–4.
Serial Digital Audio
Checks
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 ...
Page 18: ......
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 ...
Page 166: ...ECO 422 ...
Page 167: ...Replaceable Mechanical Parts ...
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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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