Tandy 1000 SL Technical Reference Manual page 297

(c)
DIFO ( p i n
1,
p i n 44)
D i f f e r e n t i a l o u t p u t t e r m i n a l s o f t h e d i f f e r e n t i a t i o n a m p l i f i e r .
The phase of pin 1 and
44
a r e o p p o s i t e each o t h e r .
2 . 7 V , approx. 2 . 7 V , approx.
Read
-
( d )
C I
( p i n 43, p i n 43)
Write
D i f f e r e n t i a l i n p u t t e r m i n a l o f t h e comparator (peak d e t e c t o r ) . The
phase o f p i n 43 and 42 a r e o p p o s i t e each o t h e r .
2 . 5 V , approx. 2 . 5 V , approx.
Read
-
Write
( 3 ) Time domain f i l t e r
( a ) TDCR ( p i n 40)
Pulse width s e t t i n g t e r m i n a l o f t h e f i l t e r .
1.5V, approx.
Delay p u l s e width
Write: 1.5V, approx.
Read Read i n h i b i t : 0 . 7 V , approx.
-
-
218
-