Advertisement
POWER CONNECTOR (Jl)
The STU-III/R is powered by an external power supply that is
provided with the unit. It is awide range, auto switching supply,
capable of accepting an input voltage in the range of 90-265 Volts
AC with afrequency range of 50-440 Hz. The AC side has aNEMA
type 5-15R plug. The power connection is made via a9pin male D-
type connector (see Figure 3-2) with apinout as shown in the
following Table 3-11.
Ta b l e 3 - 11 . P o w e r S u p p l y I n t e r f a c e ( J l )
S I G N A L
P I N
I / O
D E S C R I P T I O N
- h 5 v o l t s @ 2 . 5 A f r o m t h e
power supply
+ 5 V
I
2
I
4 - 1 2 v o l t s @ 4 0 0 m A f r o m t h e
power supply
+ 1 2 V
8
- 1 2 v o l t s @ 3 0 0 m A f r o m t h e
power supply
-12 V
5
I
I
4 - 5 v o l t r e f e r e n c e f r o m t h e
external power supply
4 - 5 V R e t u r n
6
R e f e r e n c e f o r t h e + 1 2 v o l t s
from the external power
s u p p l y
I
4 - 1 2 R e t u r n
9
4-5 volt power supply remote
s e n s e l i n e
4 - 5 V S e n s e
I
3
4 - 5 V R e t S e n s e
I
Ground for power supply
r e m o t e s e n s e l i n e
4
S S B
O
I n t e r n a l c o n t r o l b u s f o r
diagnostic monitoring
1
E a r t h
G N D
G r o u n d
7
E a r t h G r o u n d
S H E D
G r o u n d S h i e l d
3 - 1 3
Advertisement
Chapters
