Table B.2

FOS DEAD AND NOISY CHANNELS HISTORY1



BLUE DETECTOR

DISABLED 
Dead 
Channels

49

101

223

284

292

409

441

471

DATE Died

2/17/88

8/28/91

4/6/88

2/17/88

9/7/93

2/17/88

6/20/91

6/1/91

DATE 
Disabled

2/17/88

12/14/91

4/6/88

2/17/88

10/11/93

2/17/88

8/3/91

8/3/91

DISABLED 
Noisy 
Channels

31

73

144

201

218

225

235

241

268

398

415

427

451

465

472

497

219

DATE Noticed

3/11/88

Prelaunch

3/17/93

Prelaunch

Prelaunch

Prelaunch, ?

10/1/90

10/3/90

Prelaunch

12/90

Prelaunch,10/92

Prelaunch, 3/5/92

Prelaunch

Prelaunch

Prelaunch

3/11/88

Prelaunch

DATE Disabled

11/1/90

Prelaunch

5/3/93

Prelaunch

Prelaunch

5/18/90,(enabled 6/11/90),11/1/90

11/1/90

11/1/90

Prelaunch

2/20/91

Prelaunch,(enabled 2/20/91), 2/15/93

Prelaunch,(enabled 2/20/91),4/13/92

Prelaunch

Prelaunch

Prelaunch

11/1/90

Prelaunch,ENABLED 2/20/91

RED DETECTOR

DISABLED 
Dead 
Channels

2

6

29

197

212

308

486

DATE Died

Prelaunch

Prelaunch

10/27/91

12/90

Prelaunch

10/12/93

Prelaunch

DATE 
Disabled

Prelaunch

Prelaunch

1/7/92

2/20/91

Prelaunch

Prelaunch

DISABLED 
Noisy 
Channels

110

189

285

380

381

405

409

412

235

261

344

DATE Noticed

7/16/90

9/91

Prelaunch

7/91

Prelaunch,5/93

Prelaunch

Prelaunch

11/91

Prelaunch

Prelaunch

Prelaunch

DATE Disabled

9/14/90

12/14/91

Prelaunch (formerly DEAD)

8/3/92

Prelaunch,(enabled 8/27/90),10/11/93

Prelaunch

Prelaunch

10/11/93

Prelaunch,ENABLED 8/27/90

Prelaunch,ENABLED 8/27/90

Prelaunch,ENABLED 8/27/90



1. Diode Range is 0-511.