Honeywell BR3C9 Operation Manual page 106

RC 8 • SEEK ENABLE
~
RTZ LATCH-
--.Jd5
'WD- - - -
CAIIRIA., MOTION
REV~
VELOCITY INTEGRATOR
( A312)
I J
TU .... AltOUHD--f
l-
I I
REV -7 IPS
~
~
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i
I I I I I I
..........
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CD
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o
I
I
REV EOT ENAIU
(A'II)
----------~I ~.---~--~------------------------
I
'WD EOT ENAIL!
(A'IS)
----------~f ~·--~---------U--------------------------
REV!IISE EOT F'
------------~J l~---~I
I
~~------------------
REVERSE EOT PULSE
(A211)
--------------~I ~~--~---------------------------------
I I
IC 207
--------------~' }~----~
I
I
I
LOAD LATCH
______________________
~r___1~
________________________ ___
--,~--------------------------~
FINE SERVO SIGNAL
(.314)
--J\f\J
/
,,~------------
y1 :
'CYL
0
I
CYL 0
G>:
ON CYLINDER DELAY
(X 30001
! jj;.------------~t=_I.75MS::1
ON C 'fLINDER
------------~I l~------------------------------~I
(i)
NOTES:
<D
RTZ LATCH CAUSES RTZ GATE (AUO· 1 TO APPLY NEG VOLTAGE (SEEK REV 1
TO VOICE COIL SUMMING AMPL. COARSE AND FINE GATES IHHI8ITED.
CYLINDER REGISTER SET TO ZERO AND DIFFERENCE COUNTER SET TO MAXIMUM (10231
FWD MOTION TO 7 IPS PROVIDED 8Y LOAD GATE
IAZ9Q ) __ IT PROVIDES + (SEEK FWD)
TO SUMMING AMPL. WHEN LOAD LATCH CLEARS, MOTION CONTROL PROVIDED IY FIH£ SERVO SIGNAL.
CYLIND!R PULSES RESTART VELOCITY INTEGRATOR. THEY 00 NOT AFFECT DIFFERENCE COUNTER.
(!)
REVERSE EOT 'F CLEARED 8'1 FIRST EVEN DI BITS. (APPROACHIHC TRACK 0),
<!)
ASSUMES 475 MS DELAY HAS TIMED OUT.
~
ON CYLINDER DROPS POSITIONER auSY AND IHITiATES DEN.
7MI03
Figure 3-26.
ReB Timing Diagram
83318200 A
3-61