158

1443 4 Mar 68

Ran MAGTST on a short tape for about
2 hours. (6 passes) Got only 4
"compared data not equal" errors in that
time. no other errors at all. I
am not sure that this error rate
is above the noise level. I

I suggest that if there is trouble
with the MAG tape a good first aid
measure is to clean the tape drive.
SRR

0100 5 Mar 68

From
spacewar
bit 35
[pieces taped on the page]

SRR

0900 5 Mar 68

Space war button 35 switch replaced
[Ted Panofsky?]

1020
Have called Jesse Gonzales regarding our current
problems on TTY0 and TTY5. He is going to come
tonight to repair them. (See Pg. 124 + 127.)

Last night we tried to find the cause of the
"hum bars" on the TV monitor. There is ~0.1V of 60~
ripple coming out of the camera. The +20V supply has
0.1V pK-PK ripple on it and the -10V supply has .05V pK-PK