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Widget-26 read/write clock read gate write gate

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l

Widget-26

read/write clock read gate

write gate NRZ write data index mark sector mark

NRZ

read data servo serial data out servo serial data in servo sio ready to receive servo ready

• power ok + servo reset

• reduce write current

+ write precompensation

• servo error + write safe head select 0

head select 1

+12V (2) -12V +5V (2) +12V motor ground motor ground logic (3)

• changed from existing Widget-40 interface

I

Cable Pin List

1 index mark 2 ground logic 3 sector mark 4 ground logic 5 read/write clock 6 ground logic 7

NRZ

read data

8 +5V

9

NRZ

write data 10 +5V

11 write gate 12 head select 0 13 read gate 14 head select 1

15 servo serial data out 16 precompensation 17 servo serial data in 18 servo reset

19 servo sio ready to receive 20 +12V

21 servo ready 22 +12V 23 servo error 24 -12V

25 +12V motor 26 ground motor

July 31, 1984

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