Heathkit H9 Manual page 21

ry
TTY (Active) Connections
S ERI A L OUI
I
I
___ -J
C U R RE NT
LOOP
OU T
\!,,
I
I
CU R RE NT
LOOP IN
I
(-) i
I
Q 60 4
4 1 7 - &t
PICTORIAL 2.I3