Tandy 1000 SL Technical Reference Manual page 299

LS I 5v
9
I
5v
M I RROR
( d )
WT
( p i n 1 7 , p i n 18)
External r e s i s t o r t e r m i n a l s f o r t h e head t e r m i n a t i o n i n w r i t e o p e r a t -
i o n . A n a p p r o p r i a t e value of r e s i s t o r i s connected e x t e r n a l l y n o t
t o occur t h e abnormal overshoot nor undershoot a t w r i t e o p e r a t i o n .
These t e r m i n a l s a r e a l s o used f o r t h e asymmetry adjustment a t read
o p e r a t i o n .
11V, approx. 12V, approx.
Write
Read
( e ) CD ( p i n 36)
In o r d e r t o p r o t e c t t h e head from u n d e s i r a b l e magnetization, t h i s
terminal i s used t o s e t t h e d e l a y t i m e t o keep t h e w r i t e c u r r e n t flow
a t a determined d i r e c t i o n f o r 1 through 5us, approx., a f t e r t h e
completion o f a w r i t e o p e r a t i o n (WG t u r n s o f f ) .
1.5V,
approx.
l a y time
-
2 2 0
-