Performance Verification
5–10
ECO 422
Set the Channel Configuration switches to Disabled (signal not checked) for
all channels (set all the DIP switches on S1 through S11 to “open”).
Set the Channel Configuration switch to NTSC Black Burst for Channel 1
(set S1–1 to “closed” and SW1–2 through S1–8 “open”).
Set the step attenuator to 0 dB of attenuation.
Set the SPG 422 to output an NTSC black burst signal.
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 to “Switch on
Fault.”
Add attenuation, 0.5 dB at a time, to the Backup input signal until the signal
source switches to the 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 4 dB down.
5. PAL Black Burst Check for Channel 1 Backup
Switch between 2 and 4 dB down from nominal
Connect the equipment as shown in Figure 5–1, except swap the Backup and
Primary input signals so that the step attenuator is on the Backup input
signal.
Set the Channel Configuration switches to Disabled (signal not checked) for
all channels (set all the DIP switches on S2 through S11 to “open”).
Set the Channel Configuration switch to PAL Black Burst for Channel 1 (set
S1–1 to “open,” S1–2 “closed,” and S1–30 through S1–8 “open”).
Set the step attenuator to 0 dB of attenuation.
Set the SPG 422 to output a PAL black burst signal.
Press Reset.
Summary of Contents for ECO 422
Page 4: ......
Page 6: ......
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 ...
Page 32: ......
Page 41: ...Operating Basics ECO 422 2 9 Figure 2 6 Setup for Adjusting R265 the User Level for SX 7 ...
Page 43: ...Specifications ...
Page 44: ......
Page 52: ......
Page 53: ...Theory of Operation ...
Page 54: ......
Page 62: ...Theory of Operation 4 8 ECO 422 ...
Page 63: ...Performance Verification ...
Page 64: ......
Page 84: ...Performance Verification 5 20 ECO 422 ...
Page 85: ...Adjustment Procedure ...
Page 86: ......
Page 88: ...Adjustment Procedure 6 2 ECO 422 ...
Page 89: ...Maintenance ...
Page 90: ......
Page 101: ...Options ...
Page 102: ......
Page 104: ...Options 8 2 ECO 422 ...
Page 105: ...Replaceable Electrical Parts ...
Page 106: ......
Page 140: ...Replaceable Electrical Parts 9 34 ECO 422 ...
Page 141: ...Diagrams Circuit Board Illustrations ...
Page 142: ......
Page 145: ......
Page 147: ... ECO 422 Changeover Unit FRONT PANEL 1 ...
Page 148: ...ECO 422 ...
Page 166: ...ECO 422 ...
Page 167: ...Replaceable Mechanical Parts ...
Page 168: ......
Page 174: ...Replaceable Mechanical Parts 11 6 ECO 422 ...
Page 175: ......
Page 176: ...ECO 422 A1 FIG 1 EXPLODED VIEW A2 A3 A4 ...
Page 177: ......