Tadiran Telecom Coral IPx 800 Series Installation Procedure And Hardware Reference Manual page 318

7-4
Coral IPx 800 Installation Manual
PS19 DC Card Layout
The PS19 DC card's component side layout is shown in
are described in the following table:
Feature
F1
Message Fuse
F2
Ringer Fuse
JU1
Ring Frequency
Selection Jumper
The entire cage 48VDC input circuitry, including the power supply, is protected by a
15A/250V slow blow fuse on the rear panel of the cage. See
.
Diagram
Description
A 0.8A / 250V, slow blow fuse, protects the unit's
message circuitry voltage. See
A 0.8A / 250V, slow blow fuse, protects the unit's ring
generator circuitry voltage. See
Configured as per customer specification providing
20Hz (North American systems) or 25Hz depending on
the JU1 configuration. See
.
Adjustment
. Three components
Figure 7-2
page 7-14, PS19 DC Fuses
page 7-14, PS19 DC Fuses
page 7-9, Ringer Frequency
Figure 7-3, PS19 DC Block
.
.