Differential Read Signal For Entire Track; Differential Read Signal For Portion Of Outer Track; Write Data, Write F/F Output, And Head Write Voltage For Outer Track - Control Data Corporation BR8 SERIES Hardware Maintenance Manual

6-4
SCOPE
SETTINGS:
200mv/cm
20ms/cm
TP3 AND TP4
APPROX. AMPLITUDE RANGE,
INNER TO OUTER TRACKS:
100mv - 1l00mv ALL ONES
JOOmv - 1200mv ALL ZEROS
C!B1C~-)~--------------------------------------------------------J
Figure 6-2. Differential Read Signal for Entire Track
SCOPE
......
-
I- - -1
,
I-_~'-"t- ~
--
~--
~l~
SETTING:
j~--
200mv/cm
l
10us/cm
"
I
~ ~ ,\
TP3 AND TP4
1
i1
' 1
;
' 1
;~
-
--
~U-
._-
-
~
- --
- -
-
.- ~
---
- -
~
- -
f- ' - -
- --
-
-
~~'-y----I
ALL ZEROS ALL ONES ALL ZEROS
, - r - - -
Figure 6-3. Differential Read Signal for Portion of Outer Track
SCOPE SETTI NG:
[
t - -
2v/div
-WRITE DATA
U
U
U
2v/div
I -
-t
WRITE F/F, TP5
.....
I---
' "
10v/div
(
~
r--...
-
h
(
I'.-.
HEAD WRITE VOLTAGE,
I--'
\.
V
J2-o1
0.5 us/div
1......-,---
Figure 6-4. Write Data, Write F/F Output, and Head Write
Voltage for Outer Track
77834769-G