Tadiran Telecom Coral IPx 800 Series Installation Procedure And Hardware Reference Manual page 334

7-20
Coral IPx 800 Installation Manual
PS19 DC-D Card Layout
The PS19 DC-D card layout is shown in
the following table:
Feature
F1
Input Fuse
J3
Ring Frequency
Selection Jumper
Figure 7-5
Description
25A/125V, slow blow, protects the input voltage. See
page 7-34, PS19 DC-D Fuses
The entire cage 48VDC input circuitry, including the
power supply, is protected by a slow blow 30A/125V
fuse on the rear panel of the cage wired in series to the F1
fuse, see
Figure 7-6, PS19 DC-D Block Diagram
Configured as per customer specification providing
20Hz (North American systems) or 25Hz depending on
the J3 configuration, see
.
Adjustment
. Two components are described in
.
.
page 7-25, Ringer Frequency