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~
l
t4
~
~
~
Drive Pulse Voltage
Magnet
Coil Current
4.5
I
16.7
I
J.6
Capstan Speed
(rev/sec)
0
N?
(upper)~
:
7
...............
Jf
....... .
N
°
<lower>
•
-
\ttt!i!!!l!!!!!!!!!,
it;[!@
N/c
liiiiiiiiiii!!
' , ! ! ! ! ! ! ~ ! ! f i ~ ~ W ~ ' ' ' ' ' ' ' ! ' ! = ~
= =
.·.········:·:·
·:·:·:·:······
:·:·:·:·:·:···
....
·.·:·:·:·:·:·:·:·:·
Contact Switching
:::::::;:::::::
::::::;:::::;:
:;;;:;:;:;:::: ;:;:;:;:;:;:;:;:;:;:;:;
N/O
~~NOTE:
~
A.
B.
0
Time in Milliseconds
Timing shown is for maximum reading rate of 60 cps
30
Drive pulse
duration
4.5
+0.5
ms with
rise time less than
0.5
ms.
Dip
in coil current curve-marks the
magnet
armature striking the
pole piece.
N/O
*A
*B
*C
c.
Switching zone
7-11.µns.
N/O
=
Normally open, N/C
=
Normally
closed.
Switching diagram
shows contacts reading an alternate hole, no-hole tape.
Figure 8.
Timing Diagram
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