Zhone IMACS 8000, User Manual

Page: 62 / 788

3-4 Reference Guide
Model No.
Running Head
Chassis IMACS 8000 Chassis Description
Figure 3-3.External Power Source for the Power Enhanced Chassis (8000-CHASSIS)
Notes:
4. V
NA
(+ & -) are dual -48VDC feeds for the data backplane when -48VDC is to be output
from the user card. V
NA
and V
NB
are independently protected by 8 amp fuses located on
the front panel above the TB connector.
5. V
A
(+ & -) and V
B
(+ & -) are dual feeds for the power supplies located in slots P1 & P2
respectfully (see note 3).
6. Power to V
NA
(+ & -) and V
NB
(+ & -) must be supplied by an external -48VDC power
source or jumpered from either V
A
(+ & -) or V
B
(+ & -) if -48VDC power is required on
the data backplane.
R G R
C OM
V
NA
+
-
V
NB
+
-
V
A
+
-
V
B
+
-
U
L
F us e 8A
Time Delay
R G R
C OM
V
NA
+
-
V
NB
+
-
V
A
+
-
V
B
+
-
LIS TE D 9K 09 LR 77063
T elephone E quipment
C AUT ION: F or continued protection
agains t fire, replace fus es only
with the s ame type and rating.
Zhone Technologies
Model: IMAC S 8000
105-240V ~ 6A 50/60 Hz